Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 2 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Filename: ircomm_tty_attach.c |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 4 | * Version: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Description: Code for attaching the serial driver to IrCOMM |
| 6 | * Status: Experimental. |
| 7 | * Author: Dag Brattli <dagb@cs.uit.no> |
| 8 | * Created at: Sat Jun 5 17:42:00 1999 |
| 9 | * Modified at: Tue Jan 4 14:20:49 2000 |
| 10 | * Modified by: Dag Brattli <dagb@cs.uit.no> |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 11 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | * Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved. |
| 13 | * Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com> |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 14 | * |
| 15 | * This program is free software; you can redistribute it and/or |
| 16 | * modify it under the terms of the GNU General Public License as |
| 17 | * published by the Free Software Foundation; either version 2 of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | * the License, or (at your option) any later version. |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 19 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | * This program is distributed in the hope that it will be useful, |
| 21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | * GNU General Public License for more details. |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 24 | * |
| 25 | * You should have received a copy of the GNU General Public License |
| 26 | * along with this program; if not, write to the Free Software |
| 27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | * MA 02111-1307 USA |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 29 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | ********************************************************************/ |
| 31 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/init.h> |
| 33 | |
| 34 | #include <net/irda/irda.h> |
| 35 | #include <net/irda/irlmp.h> |
| 36 | #include <net/irda/iriap.h> |
| 37 | #include <net/irda/irttp.h> |
| 38 | #include <net/irda/irias_object.h> |
| 39 | #include <net/irda/parameters.h> |
| 40 | |
| 41 | #include <net/irda/ircomm_core.h> |
| 42 | #include <net/irda/ircomm_param.h> |
| 43 | #include <net/irda/ircomm_event.h> |
| 44 | |
| 45 | #include <net/irda/ircomm_tty.h> |
| 46 | #include <net/irda/ircomm_tty_attach.h> |
| 47 | |
| 48 | static void ircomm_tty_ias_register(struct ircomm_tty_cb *self); |
| 49 | static void ircomm_tty_discovery_indication(discinfo_t *discovery, |
| 50 | DISCOVERY_MODE mode, |
| 51 | void *priv); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 52 | static void ircomm_tty_getvalue_confirm(int result, __u16 obj_id, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | struct ias_value *value, void *priv); |
| 54 | static void ircomm_tty_start_watchdog_timer(struct ircomm_tty_cb *self, |
| 55 | int timeout); |
| 56 | static void ircomm_tty_watchdog_timer_expired(void *data); |
| 57 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 58 | static int ircomm_tty_state_idle(struct ircomm_tty_cb *self, |
| 59 | IRCOMM_TTY_EVENT event, |
| 60 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | struct ircomm_tty_info *info); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 62 | static int ircomm_tty_state_search(struct ircomm_tty_cb *self, |
| 63 | IRCOMM_TTY_EVENT event, |
| 64 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | struct ircomm_tty_info *info); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 66 | static int ircomm_tty_state_query_parameters(struct ircomm_tty_cb *self, |
| 67 | IRCOMM_TTY_EVENT event, |
| 68 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | struct ircomm_tty_info *info); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 70 | static int ircomm_tty_state_query_lsap_sel(struct ircomm_tty_cb *self, |
| 71 | IRCOMM_TTY_EVENT event, |
| 72 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | struct ircomm_tty_info *info); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 74 | static int ircomm_tty_state_setup(struct ircomm_tty_cb *self, |
| 75 | IRCOMM_TTY_EVENT event, |
| 76 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | struct ircomm_tty_info *info); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 78 | static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, |
| 79 | IRCOMM_TTY_EVENT event, |
| 80 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | struct ircomm_tty_info *info); |
| 82 | |
| 83 | char *ircomm_tty_state[] = { |
| 84 | "IRCOMM_TTY_IDLE", |
| 85 | "IRCOMM_TTY_SEARCH", |
| 86 | "IRCOMM_TTY_QUERY_PARAMETERS", |
| 87 | "IRCOMM_TTY_QUERY_LSAP_SEL", |
| 88 | "IRCOMM_TTY_SETUP", |
| 89 | "IRCOMM_TTY_READY", |
| 90 | "*** ERROR *** ", |
| 91 | }; |
| 92 | |
| 93 | #ifdef CONFIG_IRDA_DEBUG |
| 94 | static char *ircomm_tty_event[] = { |
| 95 | "IRCOMM_TTY_ATTACH_CABLE", |
| 96 | "IRCOMM_TTY_DETACH_CABLE", |
| 97 | "IRCOMM_TTY_DATA_REQUEST", |
| 98 | "IRCOMM_TTY_DATA_INDICATION", |
| 99 | "IRCOMM_TTY_DISCOVERY_REQUEST", |
| 100 | "IRCOMM_TTY_DISCOVERY_INDICATION", |
| 101 | "IRCOMM_TTY_CONNECT_CONFIRM", |
| 102 | "IRCOMM_TTY_CONNECT_INDICATION", |
| 103 | "IRCOMM_TTY_DISCONNECT_REQUEST", |
| 104 | "IRCOMM_TTY_DISCONNECT_INDICATION", |
| 105 | "IRCOMM_TTY_WD_TIMER_EXPIRED", |
| 106 | "IRCOMM_TTY_GOT_PARAMETERS", |
| 107 | "IRCOMM_TTY_GOT_LSAPSEL", |
| 108 | "*** ERROR ****", |
| 109 | }; |
| 110 | #endif /* CONFIG_IRDA_DEBUG */ |
| 111 | |
| 112 | static int (*state[])(struct ircomm_tty_cb *self, IRCOMM_TTY_EVENT event, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 113 | struct sk_buff *skb, struct ircomm_tty_info *info) = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | { |
| 115 | ircomm_tty_state_idle, |
| 116 | ircomm_tty_state_search, |
| 117 | ircomm_tty_state_query_parameters, |
| 118 | ircomm_tty_state_query_lsap_sel, |
| 119 | ircomm_tty_state_setup, |
| 120 | ircomm_tty_state_ready, |
| 121 | }; |
| 122 | |
| 123 | /* |
| 124 | * Function ircomm_tty_attach_cable (driver) |
| 125 | * |
| 126 | * Try to attach cable (IrCOMM link). This function will only return |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 127 | * when the link has been connected, or if an error condition occurs. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | * If success, the return value is the resulting service type. |
| 129 | */ |
| 130 | int ircomm_tty_attach_cable(struct ircomm_tty_cb *self) |
| 131 | { |
| 132 | IRDA_DEBUG(0, "%s()\n", __FUNCTION__ ); |
| 133 | |
| 134 | IRDA_ASSERT(self != NULL, return -1;); |
| 135 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); |
| 136 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 137 | /* Check if somebody has already connected to us */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | if (ircomm_is_connected(self->ircomm)) { |
| 139 | IRDA_DEBUG(0, "%s(), already connected!\n", __FUNCTION__ ); |
| 140 | return 0; |
| 141 | } |
| 142 | |
| 143 | /* Make sure nobody tries to write before the link is up */ |
| 144 | self->tty->hw_stopped = 1; |
| 145 | |
| 146 | ircomm_tty_ias_register(self); |
| 147 | |
| 148 | ircomm_tty_do_event(self, IRCOMM_TTY_ATTACH_CABLE, NULL, NULL); |
| 149 | |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | /* |
| 154 | * Function ircomm_detach_cable (driver) |
| 155 | * |
| 156 | * Detach cable, or cable has been detached by peer |
| 157 | * |
| 158 | */ |
| 159 | void ircomm_tty_detach_cable(struct ircomm_tty_cb *self) |
| 160 | { |
| 161 | IRDA_DEBUG(0, "%s()\n", __FUNCTION__ ); |
| 162 | |
| 163 | IRDA_ASSERT(self != NULL, return;); |
| 164 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 165 | |
| 166 | del_timer(&self->watchdog_timer); |
| 167 | |
| 168 | /* Remove discovery handler */ |
| 169 | if (self->ckey) { |
| 170 | irlmp_unregister_client(self->ckey); |
| 171 | self->ckey = NULL; |
| 172 | } |
| 173 | /* Remove IrCOMM hint bits */ |
| 174 | if (self->skey) { |
| 175 | irlmp_unregister_service(self->skey); |
| 176 | self->skey = NULL; |
| 177 | } |
| 178 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 179 | if (self->iriap) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | iriap_close(self->iriap); |
| 181 | self->iriap = NULL; |
| 182 | } |
| 183 | |
| 184 | /* Remove LM-IAS object */ |
| 185 | if (self->obj) { |
| 186 | irias_delete_object(self->obj); |
| 187 | self->obj = NULL; |
| 188 | } |
| 189 | |
| 190 | ircomm_tty_do_event(self, IRCOMM_TTY_DETACH_CABLE, NULL, NULL); |
| 191 | |
| 192 | /* Reset some values */ |
| 193 | self->daddr = self->saddr = 0; |
| 194 | self->dlsap_sel = self->slsap_sel = 0; |
| 195 | |
| 196 | memset(&self->settings, 0, sizeof(struct ircomm_params)); |
| 197 | } |
| 198 | |
| 199 | /* |
| 200 | * Function ircomm_tty_ias_register (self) |
| 201 | * |
| 202 | * Register with LM-IAS depending on which service type we are |
| 203 | * |
| 204 | */ |
| 205 | static void ircomm_tty_ias_register(struct ircomm_tty_cb *self) |
| 206 | { |
| 207 | __u8 oct_seq[6]; |
| 208 | __u16 hints; |
| 209 | |
| 210 | IRDA_DEBUG(0, "%s()\n", __FUNCTION__ ); |
| 211 | |
| 212 | IRDA_ASSERT(self != NULL, return;); |
| 213 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | /* Compute hint bits based on service */ |
| 216 | hints = irlmp_service_to_hint(S_COMM); |
| 217 | if (self->service_type & IRCOMM_3_WIRE_RAW) |
| 218 | hints |= irlmp_service_to_hint(S_PRINTER); |
| 219 | |
| 220 | /* Advertise IrCOMM hint bit in discovery */ |
| 221 | if (!self->skey) |
| 222 | self->skey = irlmp_register_service(hints); |
| 223 | /* Set up a discovery handler */ |
| 224 | if (!self->ckey) |
| 225 | self->ckey = irlmp_register_client(hints, |
| 226 | ircomm_tty_discovery_indication, |
| 227 | NULL, (void *) self); |
| 228 | |
| 229 | /* If already done, no need to do it again */ |
| 230 | if (self->obj) |
| 231 | return; |
| 232 | |
| 233 | if (self->service_type & IRCOMM_3_WIRE_RAW) { |
| 234 | /* Register IrLPT with LM-IAS */ |
| 235 | self->obj = irias_new_object("IrLPT", IAS_IRLPT_ID); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 236 | irias_add_integer_attrib(self->obj, "IrDA:IrLMP:LsapSel", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | self->slsap_sel, IAS_KERNEL_ATTR); |
| 238 | } else { |
| 239 | /* Register IrCOMM with LM-IAS */ |
| 240 | self->obj = irias_new_object("IrDA:IrCOMM", IAS_IRCOMM_ID); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 241 | irias_add_integer_attrib(self->obj, "IrDA:TinyTP:LsapSel", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | self->slsap_sel, IAS_KERNEL_ATTR); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | /* Code the parameters into the buffer */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 245 | irda_param_pack(oct_seq, "bbbbbb", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | IRCOMM_SERVICE_TYPE, 1, self->service_type, |
| 247 | IRCOMM_PORT_TYPE, 1, IRCOMM_SERIAL); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | /* Register parameters with LM-IAS */ |
| 250 | irias_add_octseq_attrib(self->obj, "Parameters", oct_seq, 6, |
| 251 | IAS_KERNEL_ATTR); |
| 252 | } |
| 253 | irias_insert_object(self->obj); |
| 254 | } |
| 255 | |
| 256 | /* |
| 257 | * Function ircomm_tty_ias_unregister (self) |
| 258 | * |
| 259 | * Remove our IAS object and client hook while connected. |
| 260 | * |
| 261 | */ |
| 262 | static void ircomm_tty_ias_unregister(struct ircomm_tty_cb *self) |
| 263 | { |
| 264 | /* Remove LM-IAS object now so it is not reused. |
| 265 | * IrCOMM deals very poorly with multiple incoming connections. |
| 266 | * It should looks a lot more like IrNET, and "dup" a server TSAP |
| 267 | * to the application TSAP (based on various rules). |
| 268 | * This is a cheap workaround allowing multiple clients to |
| 269 | * connect to us. It will not always work. |
| 270 | * Each IrCOMM socket has an IAS entry. Incoming connection will |
| 271 | * pick the first one found. So, when we are fully connected, |
| 272 | * we remove our IAS entries so that the next IAS entry is used. |
| 273 | * We do that for *both* client and server, because a server |
| 274 | * can also create client instances. |
| 275 | * Jean II */ |
| 276 | if (self->obj) { |
| 277 | irias_delete_object(self->obj); |
| 278 | self->obj = NULL; |
| 279 | } |
| 280 | |
| 281 | #if 0 |
| 282 | /* Remove discovery handler. |
| 283 | * While we are connected, we no longer need to receive |
| 284 | * discovery events. This would be the case if there is |
| 285 | * multiple IrLAP interfaces. Jean II */ |
| 286 | if (self->ckey) { |
| 287 | irlmp_unregister_client(self->ckey); |
| 288 | self->ckey = NULL; |
| 289 | } |
| 290 | #endif |
| 291 | } |
| 292 | |
| 293 | /* |
| 294 | * Function ircomm_send_initial_parameters (self) |
| 295 | * |
| 296 | * Send initial parameters to the remote IrCOMM device. These parameters |
| 297 | * must be sent before any data. |
| 298 | */ |
| 299 | int ircomm_tty_send_initial_parameters(struct ircomm_tty_cb *self) |
| 300 | { |
| 301 | IRDA_ASSERT(self != NULL, return -1;); |
| 302 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); |
| 303 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 304 | if (self->service_type & IRCOMM_3_WIRE_RAW) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | return 0; |
| 306 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 307 | /* |
| 308 | * Set default values, but only if the application for some reason |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | * haven't set them already |
| 310 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 311 | IRDA_DEBUG(2, "%s(), data-rate = %d\n", __FUNCTION__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | self->settings.data_rate); |
| 313 | if (!self->settings.data_rate) |
| 314 | self->settings.data_rate = 9600; |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 315 | IRDA_DEBUG(2, "%s(), data-format = %d\n", __FUNCTION__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | self->settings.data_format); |
| 317 | if (!self->settings.data_format) |
| 318 | self->settings.data_format = IRCOMM_WSIZE_8; /* 8N1 */ |
| 319 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 320 | IRDA_DEBUG(2, "%s(), flow-control = %d\n", __FUNCTION__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | self->settings.flow_control); |
| 322 | /*self->settings.flow_control = IRCOMM_RTS_CTS_IN|IRCOMM_RTS_CTS_OUT;*/ |
| 323 | |
| 324 | /* Do not set delta values for the initial parameters */ |
| 325 | self->settings.dte = IRCOMM_DTR | IRCOMM_RTS; |
| 326 | |
| 327 | /* Only send service type parameter when we are the client */ |
| 328 | if (self->client) |
| 329 | ircomm_param_request(self, IRCOMM_SERVICE_TYPE, FALSE); |
| 330 | ircomm_param_request(self, IRCOMM_DATA_RATE, FALSE); |
| 331 | ircomm_param_request(self, IRCOMM_DATA_FORMAT, FALSE); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | /* For a 3 wire service, we just flush the last parameter and return */ |
| 334 | if (self->settings.service_type == IRCOMM_3_WIRE) { |
| 335 | ircomm_param_request(self, IRCOMM_FLOW_CONTROL, TRUE); |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | /* Only 9-wire service types continue here */ |
| 340 | ircomm_param_request(self, IRCOMM_FLOW_CONTROL, FALSE); |
| 341 | #if 0 |
| 342 | ircomm_param_request(self, IRCOMM_XON_XOFF, FALSE); |
| 343 | ircomm_param_request(self, IRCOMM_ENQ_ACK, FALSE); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 344 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | /* Notify peer that we are ready to receive data */ |
| 346 | ircomm_param_request(self, IRCOMM_DTE, TRUE); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | return 0; |
| 349 | } |
| 350 | |
| 351 | /* |
| 352 | * Function ircomm_tty_discovery_indication (discovery) |
| 353 | * |
| 354 | * Remote device is discovered, try query the remote IAS to see which |
| 355 | * device it is, and which services it has. |
| 356 | * |
| 357 | */ |
| 358 | static void ircomm_tty_discovery_indication(discinfo_t *discovery, |
| 359 | DISCOVERY_MODE mode, |
| 360 | void *priv) |
| 361 | { |
| 362 | struct ircomm_tty_cb *self; |
| 363 | struct ircomm_tty_info info; |
| 364 | |
| 365 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); |
| 366 | |
| 367 | /* Important note : |
| 368 | * We need to drop all passive discoveries. |
| 369 | * The LSAP management of IrComm is deficient and doesn't deal |
| 370 | * with the case of two instance connecting to each other |
| 371 | * simultaneously (it will deadlock in LMP). |
| 372 | * The proper fix would be to use the same technique as in IrNET, |
| 373 | * to have one server socket and separate instances for the |
| 374 | * connecting/connected socket. |
| 375 | * The workaround is to drop passive discovery, which drastically |
| 376 | * reduce the probability of this happening. |
| 377 | * Jean II */ |
| 378 | if(mode == DISCOVERY_PASSIVE) |
| 379 | return; |
| 380 | |
| 381 | info.daddr = discovery->daddr; |
| 382 | info.saddr = discovery->saddr; |
| 383 | |
| 384 | /* FIXME. We have a locking problem on the hashbin here. |
| 385 | * We probably need to use hashbin_find_next(), but we first |
| 386 | * need to ensure that "line" is unique. - Jean II */ |
| 387 | self = (struct ircomm_tty_cb *) hashbin_get_first(ircomm_tty); |
| 388 | while (self != NULL) { |
| 389 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 390 | |
| 391 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCOVERY_INDICATION, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | NULL, &info); |
| 393 | |
| 394 | self = (struct ircomm_tty_cb *) hashbin_get_next(ircomm_tty); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | /* |
| 399 | * Function ircomm_tty_disconnect_indication (instance, sap, reason, skb) |
| 400 | * |
| 401 | * Link disconnected |
| 402 | * |
| 403 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 404 | void ircomm_tty_disconnect_indication(void *instance, void *sap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | LM_REASON reason, |
| 406 | struct sk_buff *skb) |
| 407 | { |
| 408 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; |
| 409 | |
| 410 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); |
| 411 | |
| 412 | IRDA_ASSERT(self != NULL, return;); |
| 413 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 414 | |
| 415 | if (!self->tty) |
| 416 | return; |
| 417 | |
| 418 | /* This will stop control data transfers */ |
| 419 | self->flow = FLOW_STOP; |
| 420 | |
| 421 | /* Stop data transfers */ |
| 422 | self->tty->hw_stopped = 1; |
| 423 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 424 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCONNECT_INDICATION, NULL, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | NULL); |
| 426 | } |
| 427 | |
| 428 | /* |
| 429 | * Function ircomm_tty_getvalue_confirm (result, obj_id, value, priv) |
| 430 | * |
| 431 | * Got result from the IAS query we make |
| 432 | * |
| 433 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 434 | static void ircomm_tty_getvalue_confirm(int result, __u16 obj_id, |
| 435 | struct ias_value *value, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | void *priv) |
| 437 | { |
| 438 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) priv; |
| 439 | |
| 440 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); |
| 441 | |
| 442 | IRDA_ASSERT(self != NULL, return;); |
| 443 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 444 | |
| 445 | /* We probably don't need to make any more queries */ |
| 446 | iriap_close(self->iriap); |
| 447 | self->iriap = NULL; |
| 448 | |
| 449 | /* Check if request succeeded */ |
| 450 | if (result != IAS_SUCCESS) { |
| 451 | IRDA_DEBUG(4, "%s(), got NULL value!\n", __FUNCTION__ ); |
| 452 | return; |
| 453 | } |
| 454 | |
| 455 | switch (value->type) { |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 456 | case IAS_OCT_SEQ: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | IRDA_DEBUG(2, "%s(), got octet sequence\n", __FUNCTION__ ); |
| 458 | |
| 459 | irda_param_extract_all(self, value->t.oct_seq, value->len, |
| 460 | &ircomm_param_info); |
| 461 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 462 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_PARAMETERS, NULL, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | NULL); |
| 464 | break; |
| 465 | case IAS_INTEGER: |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 466 | /* Got LSAP selector */ |
| 467 | IRDA_DEBUG(2, "%s(), got lsapsel = %d\n", __FUNCTION__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | value->t.integer); |
| 469 | |
| 470 | if (value->t.integer == -1) { |
| 471 | IRDA_DEBUG(0, "%s(), invalid value!\n", __FUNCTION__ ); |
| 472 | } else |
| 473 | self->dlsap_sel = value->t.integer; |
| 474 | |
| 475 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_LSAPSEL, NULL, NULL); |
| 476 | break; |
| 477 | case IAS_MISSING: |
| 478 | IRDA_DEBUG(0, "%s(), got IAS_MISSING\n", __FUNCTION__ ); |
| 479 | break; |
| 480 | default: |
| 481 | IRDA_DEBUG(0, "%s(), got unknown type!\n", __FUNCTION__ ); |
| 482 | break; |
| 483 | } |
| 484 | irias_delete_value(value); |
| 485 | } |
| 486 | |
| 487 | /* |
| 488 | * Function ircomm_tty_connect_confirm (instance, sap, qos, max_sdu_size, skb) |
| 489 | * |
| 490 | * Connection confirmed |
| 491 | * |
| 492 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 493 | void ircomm_tty_connect_confirm(void *instance, void *sap, |
| 494 | struct qos_info *qos, |
| 495 | __u32 max_data_size, |
| 496 | __u8 max_header_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | struct sk_buff *skb) |
| 498 | { |
| 499 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; |
| 500 | |
| 501 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); |
| 502 | |
| 503 | IRDA_ASSERT(self != NULL, return;); |
| 504 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 505 | |
| 506 | self->client = TRUE; |
| 507 | self->max_data_size = max_data_size; |
| 508 | self->max_header_size = max_header_size; |
| 509 | self->flow = FLOW_START; |
| 510 | |
| 511 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_CONFIRM, NULL, NULL); |
| 512 | |
| 513 | /* No need to kfree_skb - see ircomm_ttp_connect_confirm() */ |
| 514 | } |
| 515 | |
| 516 | /* |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 517 | * Function ircomm_tty_connect_indication (instance, sap, qos, max_sdu_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | * skb) |
| 519 | * |
| 520 | * we are discovered and being requested to connect by remote device ! |
| 521 | * |
| 522 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 523 | void ircomm_tty_connect_indication(void *instance, void *sap, |
| 524 | struct qos_info *qos, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | __u32 max_data_size, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 526 | __u8 max_header_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | struct sk_buff *skb) |
| 528 | { |
| 529 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; |
| 530 | int clen; |
| 531 | |
| 532 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); |
| 533 | |
| 534 | IRDA_ASSERT(self != NULL, return;); |
| 535 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 536 | |
| 537 | self->client = FALSE; |
| 538 | self->max_data_size = max_data_size; |
| 539 | self->max_header_size = max_header_size; |
| 540 | self->flow = FLOW_START; |
| 541 | |
| 542 | clen = skb->data[0]; |
| 543 | if (clen) |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 544 | irda_param_extract_all(self, skb->data+1, |
| 545 | IRDA_MIN(skb->len, clen), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | &ircomm_param_info); |
| 547 | |
| 548 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_INDICATION, NULL, NULL); |
| 549 | |
| 550 | /* No need to kfree_skb - see ircomm_ttp_connect_indication() */ |
| 551 | } |
| 552 | |
| 553 | /* |
| 554 | * Function ircomm_tty_link_established (self) |
| 555 | * |
| 556 | * Called when the IrCOMM link is established |
| 557 | * |
| 558 | */ |
| 559 | void ircomm_tty_link_established(struct ircomm_tty_cb *self) |
| 560 | { |
| 561 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); |
| 562 | |
| 563 | IRDA_ASSERT(self != NULL, return;); |
| 564 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 565 | |
| 566 | if (!self->tty) |
| 567 | return; |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 568 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | del_timer(&self->watchdog_timer); |
| 570 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 571 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | * IrCOMM link is now up, and if we are not using hardware |
| 573 | * flow-control, then declare the hardware as running. Otherwise we |
| 574 | * will have to wait for the peer device (DCE) to raise the CTS |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 575 | * line. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | */ |
| 577 | if ((self->flags & ASYNC_CTS_FLOW) && ((self->settings.dce & IRCOMM_CTS) == 0)) { |
| 578 | IRDA_DEBUG(0, "%s(), waiting for CTS ...\n", __FUNCTION__ ); |
| 579 | return; |
| 580 | } else { |
| 581 | IRDA_DEBUG(1, "%s(), starting hardware!\n", __FUNCTION__ ); |
| 582 | |
| 583 | self->tty->hw_stopped = 0; |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 584 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | /* Wake up processes blocked on open */ |
| 586 | wake_up_interruptible(&self->open_wait); |
| 587 | } |
| 588 | |
| 589 | schedule_work(&self->tqueue); |
| 590 | } |
| 591 | |
| 592 | /* |
| 593 | * Function ircomm_tty_start_watchdog_timer (self, timeout) |
| 594 | * |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 595 | * Start the watchdog timer. This timer is used to make sure that any |
| 596 | * connection attempt is successful, and if not, we will retry after |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | * the timeout |
| 598 | */ |
| 599 | static void ircomm_tty_start_watchdog_timer(struct ircomm_tty_cb *self, |
| 600 | int timeout) |
| 601 | { |
| 602 | IRDA_ASSERT(self != NULL, return;); |
| 603 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 604 | |
| 605 | irda_start_timer(&self->watchdog_timer, timeout, (void *) self, |
| 606 | ircomm_tty_watchdog_timer_expired); |
| 607 | } |
| 608 | |
| 609 | /* |
| 610 | * Function ircomm_tty_watchdog_timer_expired (data) |
| 611 | * |
| 612 | * Called when the connect procedure have taken to much time. |
| 613 | * |
| 614 | */ |
| 615 | static void ircomm_tty_watchdog_timer_expired(void *data) |
| 616 | { |
| 617 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) data; |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 618 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); |
| 620 | |
| 621 | IRDA_ASSERT(self != NULL, return;); |
| 622 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 623 | |
| 624 | ircomm_tty_do_event(self, IRCOMM_TTY_WD_TIMER_EXPIRED, NULL, NULL); |
| 625 | } |
| 626 | |
| 627 | |
| 628 | /* |
| 629 | * Function ircomm_tty_do_event (self, event, skb) |
| 630 | * |
| 631 | * Process event |
| 632 | * |
| 633 | */ |
| 634 | int ircomm_tty_do_event(struct ircomm_tty_cb *self, IRCOMM_TTY_EVENT event, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 635 | struct sk_buff *skb, struct ircomm_tty_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | { |
| 637 | IRDA_ASSERT(self != NULL, return -1;); |
| 638 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); |
| 639 | |
| 640 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __FUNCTION__ , |
| 641 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 642 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | return (*state[self->state])(self, event, skb, info); |
| 644 | } |
| 645 | |
| 646 | /* |
| 647 | * Function ircomm_tty_next_state (self, state) |
| 648 | * |
| 649 | * Switch state |
| 650 | * |
| 651 | */ |
| 652 | static inline void ircomm_tty_next_state(struct ircomm_tty_cb *self, IRCOMM_TTY_STATE state) |
| 653 | { |
| 654 | /* |
| 655 | IRDA_ASSERT(self != NULL, return;); |
| 656 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 657 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 658 | IRDA_DEBUG(2, "%s: next state=%s, service type=%d\n", __FUNCTION__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | ircomm_tty_state[self->state], self->service_type); |
| 660 | */ |
| 661 | self->state = state; |
| 662 | } |
| 663 | |
| 664 | /* |
| 665 | * Function ircomm_tty_state_idle (self, event, skb, info) |
| 666 | * |
| 667 | * Just hanging around |
| 668 | * |
| 669 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 670 | static int ircomm_tty_state_idle(struct ircomm_tty_cb *self, |
| 671 | IRCOMM_TTY_EVENT event, |
| 672 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | struct ircomm_tty_info *info) |
| 674 | { |
| 675 | int ret = 0; |
| 676 | |
| 677 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __FUNCTION__ , |
| 678 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 679 | switch (event) { |
| 680 | case IRCOMM_TTY_ATTACH_CABLE: |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 681 | /* Try to discover any remote devices */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 683 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 684 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); |
| 686 | break; |
| 687 | case IRCOMM_TTY_DISCOVERY_INDICATION: |
| 688 | self->daddr = info->daddr; |
| 689 | self->saddr = info->saddr; |
| 690 | |
| 691 | if (self->iriap) { |
| 692 | IRDA_WARNING("%s(), busy with a previous query\n", |
| 693 | __FUNCTION__); |
| 694 | return -EBUSY; |
| 695 | } |
| 696 | |
| 697 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
| 698 | ircomm_tty_getvalue_confirm); |
| 699 | |
| 700 | iriap_getvaluebyclass_request(self->iriap, |
| 701 | self->saddr, self->daddr, |
| 702 | "IrDA:IrCOMM", "Parameters"); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 705 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); |
| 706 | break; |
| 707 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 708 | del_timer(&self->watchdog_timer); |
| 709 | |
| 710 | /* Accept connection */ |
| 711 | ircomm_connect_response(self->ircomm, NULL); |
| 712 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 713 | break; |
| 714 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 715 | /* Just stay idle */ |
| 716 | break; |
| 717 | case IRCOMM_TTY_DETACH_CABLE: |
| 718 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 719 | break; |
| 720 | default: |
| 721 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __FUNCTION__ , |
| 722 | ircomm_tty_event[event]); |
| 723 | ret = -EINVAL; |
| 724 | } |
| 725 | return ret; |
| 726 | } |
| 727 | |
| 728 | /* |
| 729 | * Function ircomm_tty_state_search (self, event, skb, info) |
| 730 | * |
| 731 | * Trying to discover an IrCOMM device |
| 732 | * |
| 733 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 734 | static int ircomm_tty_state_search(struct ircomm_tty_cb *self, |
| 735 | IRCOMM_TTY_EVENT event, |
| 736 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | struct ircomm_tty_info *info) |
| 738 | { |
| 739 | int ret = 0; |
| 740 | |
| 741 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __FUNCTION__ , |
| 742 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 743 | |
| 744 | switch (event) { |
| 745 | case IRCOMM_TTY_DISCOVERY_INDICATION: |
| 746 | self->daddr = info->daddr; |
| 747 | self->saddr = info->saddr; |
| 748 | |
| 749 | if (self->iriap) { |
| 750 | IRDA_WARNING("%s(), busy with a previous query\n", |
| 751 | __FUNCTION__); |
| 752 | return -EBUSY; |
| 753 | } |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 754 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
| 756 | ircomm_tty_getvalue_confirm); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | if (self->service_type == IRCOMM_3_WIRE_RAW) { |
| 759 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 760 | self->daddr, "IrLPT", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | "IrDA:IrLMP:LsapSel"); |
| 762 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); |
| 763 | } else { |
| 764 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 765 | self->daddr, |
| 766 | "IrDA:IrCOMM", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | "Parameters"); |
| 768 | |
| 769 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); |
| 770 | } |
| 771 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 772 | break; |
| 773 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 774 | del_timer(&self->watchdog_timer); |
| 775 | ircomm_tty_ias_unregister(self); |
| 776 | |
| 777 | /* Accept connection */ |
| 778 | ircomm_connect_response(self->ircomm, NULL); |
| 779 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 780 | break; |
| 781 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 782 | #if 1 |
| 783 | /* Give up */ |
| 784 | #else |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 785 | /* Try to discover any remote devices */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 787 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); |
| 788 | #endif |
| 789 | break; |
| 790 | case IRCOMM_TTY_DETACH_CABLE: |
| 791 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 792 | break; |
| 793 | default: |
| 794 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __FUNCTION__ , |
| 795 | ircomm_tty_event[event]); |
| 796 | ret = -EINVAL; |
| 797 | } |
| 798 | return ret; |
| 799 | } |
| 800 | |
| 801 | /* |
| 802 | * Function ircomm_tty_state_query (self, event, skb, info) |
| 803 | * |
| 804 | * Querying the remote LM-IAS for IrCOMM parameters |
| 805 | * |
| 806 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 807 | static int ircomm_tty_state_query_parameters(struct ircomm_tty_cb *self, |
| 808 | IRCOMM_TTY_EVENT event, |
| 809 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | struct ircomm_tty_info *info) |
| 811 | { |
| 812 | int ret = 0; |
| 813 | |
| 814 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __FUNCTION__ , |
| 815 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 816 | |
| 817 | switch (event) { |
| 818 | case IRCOMM_TTY_GOT_PARAMETERS: |
| 819 | if (self->iriap) { |
| 820 | IRDA_WARNING("%s(), busy with a previous query\n", |
| 821 | __FUNCTION__); |
| 822 | return -EBUSY; |
| 823 | } |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
| 826 | ircomm_tty_getvalue_confirm); |
| 827 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 828 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
| 829 | self->daddr, "IrDA:IrCOMM", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | "IrDA:TinyTP:LsapSel"); |
| 831 | |
| 832 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 833 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); |
| 834 | break; |
| 835 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 836 | /* Go back to search mode */ |
| 837 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 838 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | break; |
| 840 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 841 | del_timer(&self->watchdog_timer); |
| 842 | ircomm_tty_ias_unregister(self); |
| 843 | |
| 844 | /* Accept connection */ |
| 845 | ircomm_connect_response(self->ircomm, NULL); |
| 846 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 847 | break; |
| 848 | case IRCOMM_TTY_DETACH_CABLE: |
| 849 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 850 | break; |
| 851 | default: |
| 852 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __FUNCTION__ , |
| 853 | ircomm_tty_event[event]); |
| 854 | ret = -EINVAL; |
| 855 | } |
| 856 | return ret; |
| 857 | } |
| 858 | |
| 859 | /* |
| 860 | * Function ircomm_tty_state_query_lsap_sel (self, event, skb, info) |
| 861 | * |
| 862 | * Query remote LM-IAS for the LSAP selector which we can connect to |
| 863 | * |
| 864 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 865 | static int ircomm_tty_state_query_lsap_sel(struct ircomm_tty_cb *self, |
| 866 | IRCOMM_TTY_EVENT event, |
| 867 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | struct ircomm_tty_info *info) |
| 869 | { |
| 870 | int ret = 0; |
| 871 | |
| 872 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __FUNCTION__ , |
| 873 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 874 | |
| 875 | switch (event) { |
| 876 | case IRCOMM_TTY_GOT_LSAPSEL: |
| 877 | /* Connect to remote device */ |
| 878 | ret = ircomm_connect_request(self->ircomm, self->dlsap_sel, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 879 | self->saddr, self->daddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | NULL, self->service_type); |
| 881 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 882 | ircomm_tty_next_state(self, IRCOMM_TTY_SETUP); |
| 883 | break; |
| 884 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 885 | /* Go back to search mode */ |
| 886 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
| 887 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 888 | break; |
| 889 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 890 | del_timer(&self->watchdog_timer); |
| 891 | ircomm_tty_ias_unregister(self); |
| 892 | |
| 893 | /* Accept connection */ |
| 894 | ircomm_connect_response(self->ircomm, NULL); |
| 895 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 896 | break; |
| 897 | case IRCOMM_TTY_DETACH_CABLE: |
| 898 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 899 | break; |
| 900 | default: |
| 901 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __FUNCTION__ , |
| 902 | ircomm_tty_event[event]); |
| 903 | ret = -EINVAL; |
| 904 | } |
| 905 | return ret; |
| 906 | } |
| 907 | |
| 908 | /* |
| 909 | * Function ircomm_tty_state_setup (self, event, skb, info) |
| 910 | * |
| 911 | * Trying to connect |
| 912 | * |
| 913 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 914 | static int ircomm_tty_state_setup(struct ircomm_tty_cb *self, |
| 915 | IRCOMM_TTY_EVENT event, |
| 916 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | struct ircomm_tty_info *info) |
| 918 | { |
| 919 | int ret = 0; |
| 920 | |
| 921 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __FUNCTION__ , |
| 922 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 923 | |
| 924 | switch (event) { |
| 925 | case IRCOMM_TTY_CONNECT_CONFIRM: |
| 926 | del_timer(&self->watchdog_timer); |
| 927 | ircomm_tty_ias_unregister(self); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 928 | |
| 929 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | * Send initial parameters. This will also send out queued |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 931 | * parameters waiting for the connection to come up |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | */ |
| 933 | ircomm_tty_send_initial_parameters(self); |
| 934 | ircomm_tty_link_established(self); |
| 935 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 936 | break; |
| 937 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 938 | del_timer(&self->watchdog_timer); |
| 939 | ircomm_tty_ias_unregister(self); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 940 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | /* Accept connection */ |
| 942 | ircomm_connect_response(self->ircomm, NULL); |
| 943 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 944 | break; |
| 945 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 946 | /* Go back to search mode */ |
| 947 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
| 948 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 949 | break; |
| 950 | case IRCOMM_TTY_DETACH_CABLE: |
| 951 | /* ircomm_disconnect_request(self->ircomm, NULL); */ |
| 952 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 953 | break; |
| 954 | default: |
| 955 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __FUNCTION__ , |
| 956 | ircomm_tty_event[event]); |
| 957 | ret = -EINVAL; |
| 958 | } |
| 959 | return ret; |
| 960 | } |
| 961 | |
| 962 | /* |
| 963 | * Function ircomm_tty_state_ready (self, event, skb, info) |
| 964 | * |
| 965 | * IrCOMM is now connected |
| 966 | * |
| 967 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 968 | static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, |
| 969 | IRCOMM_TTY_EVENT event, |
| 970 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | struct ircomm_tty_info *info) |
| 972 | { |
| 973 | int ret = 0; |
| 974 | |
| 975 | switch (event) { |
| 976 | case IRCOMM_TTY_DATA_REQUEST: |
| 977 | ret = ircomm_data_request(self->ircomm, skb); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 978 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | case IRCOMM_TTY_DETACH_CABLE: |
| 980 | ircomm_disconnect_request(self->ircomm, NULL); |
| 981 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 982 | break; |
| 983 | case IRCOMM_TTY_DISCONNECT_INDICATION: |
| 984 | ircomm_tty_ias_register(self); |
| 985 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
| 986 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 987 | |
| 988 | if (self->flags & ASYNC_CHECK_CD) { |
| 989 | /* Drop carrier */ |
| 990 | self->settings.dce = IRCOMM_DELTA_CD; |
| 991 | ircomm_tty_check_modem_status(self); |
| 992 | } else { |
| 993 | IRDA_DEBUG(0, "%s(), hanging up!\n", __FUNCTION__ ); |
| 994 | if (self->tty) |
| 995 | tty_hangup(self->tty); |
| 996 | } |
| 997 | break; |
| 998 | default: |
| 999 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __FUNCTION__ , |
| 1000 | ircomm_tty_event[event]); |
| 1001 | ret = -EINVAL; |
| 1002 | } |
| 1003 | return ret; |
| 1004 | } |
| 1005 | |