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 | { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 132 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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)) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 139 | IRDA_DEBUG(0, "%s(), already connected!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 161 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 210 | IRDA_DEBUG(0, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 311 | IRDA_DEBUG(2, "%s(), data-rate = %d\n", __func__ , |
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; |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 315 | IRDA_DEBUG(2, "%s(), data-format = %d\n", __func__ , |
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 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 320 | IRDA_DEBUG(2, "%s(), flow-control = %d\n", __func__ , |
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 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 365 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Ryan Reading | c310f09 | 2007-10-17 19:34:11 -0700 | [diff] [blame] | 384 | self = (struct ircomm_tty_cb *) priv; |
| 385 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCOVERY_INDICATION, |
| 386 | NULL, &info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Function ircomm_tty_disconnect_indication (instance, sap, reason, skb) |
| 391 | * |
| 392 | * Link disconnected |
| 393 | * |
| 394 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 395 | void ircomm_tty_disconnect_indication(void *instance, void *sap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | LM_REASON reason, |
| 397 | struct sk_buff *skb) |
| 398 | { |
| 399 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; |
| 400 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 401 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | |
| 403 | IRDA_ASSERT(self != NULL, return;); |
| 404 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 405 | |
| 406 | if (!self->tty) |
| 407 | return; |
| 408 | |
| 409 | /* This will stop control data transfers */ |
| 410 | self->flow = FLOW_STOP; |
| 411 | |
| 412 | /* Stop data transfers */ |
| 413 | self->tty->hw_stopped = 1; |
| 414 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 415 | ircomm_tty_do_event(self, IRCOMM_TTY_DISCONNECT_INDICATION, NULL, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | NULL); |
| 417 | } |
| 418 | |
| 419 | /* |
| 420 | * Function ircomm_tty_getvalue_confirm (result, obj_id, value, priv) |
| 421 | * |
| 422 | * Got result from the IAS query we make |
| 423 | * |
| 424 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 425 | static void ircomm_tty_getvalue_confirm(int result, __u16 obj_id, |
| 426 | struct ias_value *value, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | void *priv) |
| 428 | { |
| 429 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) priv; |
| 430 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 431 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
| 433 | IRDA_ASSERT(self != NULL, return;); |
| 434 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 435 | |
| 436 | /* We probably don't need to make any more queries */ |
| 437 | iriap_close(self->iriap); |
| 438 | self->iriap = NULL; |
| 439 | |
| 440 | /* Check if request succeeded */ |
| 441 | if (result != IAS_SUCCESS) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 442 | IRDA_DEBUG(4, "%s(), got NULL value!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | return; |
| 444 | } |
| 445 | |
| 446 | switch (value->type) { |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 447 | case IAS_OCT_SEQ: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 448 | IRDA_DEBUG(2, "%s(), got octet sequence\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
| 450 | irda_param_extract_all(self, value->t.oct_seq, value->len, |
| 451 | &ircomm_param_info); |
| 452 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 453 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_PARAMETERS, NULL, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | NULL); |
| 455 | break; |
| 456 | case IAS_INTEGER: |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 457 | /* Got LSAP selector */ |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 458 | IRDA_DEBUG(2, "%s(), got lsapsel = %d\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | value->t.integer); |
| 460 | |
| 461 | if (value->t.integer == -1) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 462 | IRDA_DEBUG(0, "%s(), invalid value!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } else |
| 464 | self->dlsap_sel = value->t.integer; |
| 465 | |
| 466 | ircomm_tty_do_event(self, IRCOMM_TTY_GOT_LSAPSEL, NULL, NULL); |
| 467 | break; |
| 468 | case IAS_MISSING: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 469 | IRDA_DEBUG(0, "%s(), got IAS_MISSING\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | break; |
| 471 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 472 | IRDA_DEBUG(0, "%s(), got unknown type!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | break; |
| 474 | } |
| 475 | irias_delete_value(value); |
| 476 | } |
| 477 | |
| 478 | /* |
| 479 | * Function ircomm_tty_connect_confirm (instance, sap, qos, max_sdu_size, skb) |
| 480 | * |
| 481 | * Connection confirmed |
| 482 | * |
| 483 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 484 | void ircomm_tty_connect_confirm(void *instance, void *sap, |
| 485 | struct qos_info *qos, |
| 486 | __u32 max_data_size, |
| 487 | __u8 max_header_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | struct sk_buff *skb) |
| 489 | { |
| 490 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; |
| 491 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 492 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | IRDA_ASSERT(self != NULL, return;); |
| 495 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 496 | |
| 497 | self->client = TRUE; |
| 498 | self->max_data_size = max_data_size; |
| 499 | self->max_header_size = max_header_size; |
| 500 | self->flow = FLOW_START; |
| 501 | |
| 502 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_CONFIRM, NULL, NULL); |
| 503 | |
| 504 | /* No need to kfree_skb - see ircomm_ttp_connect_confirm() */ |
| 505 | } |
| 506 | |
| 507 | /* |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 508 | * Function ircomm_tty_connect_indication (instance, sap, qos, max_sdu_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | * skb) |
| 510 | * |
| 511 | * we are discovered and being requested to connect by remote device ! |
| 512 | * |
| 513 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 514 | void ircomm_tty_connect_indication(void *instance, void *sap, |
| 515 | struct qos_info *qos, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | __u32 max_data_size, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 517 | __u8 max_header_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | struct sk_buff *skb) |
| 519 | { |
| 520 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) instance; |
| 521 | int clen; |
| 522 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 523 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | |
| 525 | IRDA_ASSERT(self != NULL, return;); |
| 526 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 527 | |
| 528 | self->client = FALSE; |
| 529 | self->max_data_size = max_data_size; |
| 530 | self->max_header_size = max_header_size; |
| 531 | self->flow = FLOW_START; |
| 532 | |
| 533 | clen = skb->data[0]; |
| 534 | if (clen) |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 535 | irda_param_extract_all(self, skb->data+1, |
| 536 | IRDA_MIN(skb->len, clen), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | &ircomm_param_info); |
| 538 | |
| 539 | ircomm_tty_do_event(self, IRCOMM_TTY_CONNECT_INDICATION, NULL, NULL); |
| 540 | |
| 541 | /* No need to kfree_skb - see ircomm_ttp_connect_indication() */ |
| 542 | } |
| 543 | |
| 544 | /* |
| 545 | * Function ircomm_tty_link_established (self) |
| 546 | * |
| 547 | * Called when the IrCOMM link is established |
| 548 | * |
| 549 | */ |
| 550 | void ircomm_tty_link_established(struct ircomm_tty_cb *self) |
| 551 | { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 552 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | IRDA_ASSERT(self != NULL, return;); |
| 555 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 556 | |
| 557 | if (!self->tty) |
| 558 | return; |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 559 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | del_timer(&self->watchdog_timer); |
| 561 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 562 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | * IrCOMM link is now up, and if we are not using hardware |
| 564 | * flow-control, then declare the hardware as running. Otherwise we |
| 565 | * 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] | 566 | * line. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | */ |
| 568 | if ((self->flags & ASYNC_CTS_FLOW) && ((self->settings.dce & IRCOMM_CTS) == 0)) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 569 | IRDA_DEBUG(0, "%s(), waiting for CTS ...\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | return; |
| 571 | } else { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 572 | IRDA_DEBUG(1, "%s(), starting hardware!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | |
| 574 | self->tty->hw_stopped = 0; |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 575 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | /* Wake up processes blocked on open */ |
| 577 | wake_up_interruptible(&self->open_wait); |
| 578 | } |
| 579 | |
| 580 | schedule_work(&self->tqueue); |
| 581 | } |
| 582 | |
| 583 | /* |
| 584 | * Function ircomm_tty_start_watchdog_timer (self, timeout) |
| 585 | * |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 586 | * Start the watchdog timer. This timer is used to make sure that any |
| 587 | * connection attempt is successful, and if not, we will retry after |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | * the timeout |
| 589 | */ |
| 590 | static void ircomm_tty_start_watchdog_timer(struct ircomm_tty_cb *self, |
| 591 | int timeout) |
| 592 | { |
| 593 | IRDA_ASSERT(self != NULL, return;); |
| 594 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 595 | |
| 596 | irda_start_timer(&self->watchdog_timer, timeout, (void *) self, |
| 597 | ircomm_tty_watchdog_timer_expired); |
| 598 | } |
| 599 | |
| 600 | /* |
| 601 | * Function ircomm_tty_watchdog_timer_expired (data) |
| 602 | * |
| 603 | * Called when the connect procedure have taken to much time. |
| 604 | * |
| 605 | */ |
| 606 | static void ircomm_tty_watchdog_timer_expired(void *data) |
| 607 | { |
| 608 | struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) data; |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 609 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 610 | IRDA_DEBUG(2, "%s()\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
| 612 | IRDA_ASSERT(self != NULL, return;); |
| 613 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 614 | |
| 615 | ircomm_tty_do_event(self, IRCOMM_TTY_WD_TIMER_EXPIRED, NULL, NULL); |
| 616 | } |
| 617 | |
| 618 | |
| 619 | /* |
| 620 | * Function ircomm_tty_do_event (self, event, skb) |
| 621 | * |
| 622 | * Process event |
| 623 | * |
| 624 | */ |
| 625 | 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] | 626 | struct sk_buff *skb, struct ircomm_tty_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | { |
| 628 | IRDA_ASSERT(self != NULL, return -1;); |
| 629 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;); |
| 630 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 631 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 633 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | return (*state[self->state])(self, event, skb, info); |
| 635 | } |
| 636 | |
| 637 | /* |
| 638 | * Function ircomm_tty_next_state (self, state) |
| 639 | * |
| 640 | * Switch state |
| 641 | * |
| 642 | */ |
| 643 | static inline void ircomm_tty_next_state(struct ircomm_tty_cb *self, IRCOMM_TTY_STATE state) |
| 644 | { |
| 645 | /* |
| 646 | IRDA_ASSERT(self != NULL, return;); |
| 647 | IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); |
| 648 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 649 | IRDA_DEBUG(2, "%s: next state=%s, service type=%d\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | ircomm_tty_state[self->state], self->service_type); |
| 651 | */ |
| 652 | self->state = state; |
| 653 | } |
| 654 | |
| 655 | /* |
| 656 | * Function ircomm_tty_state_idle (self, event, skb, info) |
| 657 | * |
| 658 | * Just hanging around |
| 659 | * |
| 660 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 661 | static int ircomm_tty_state_idle(struct ircomm_tty_cb *self, |
| 662 | IRCOMM_TTY_EVENT event, |
| 663 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | struct ircomm_tty_info *info) |
| 665 | { |
| 666 | int ret = 0; |
| 667 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 668 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 670 | switch (event) { |
| 671 | case IRCOMM_TTY_ATTACH_CABLE: |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 672 | /* Try to discover any remote devices */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 674 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 675 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); |
| 677 | break; |
| 678 | case IRCOMM_TTY_DISCOVERY_INDICATION: |
| 679 | self->daddr = info->daddr; |
| 680 | self->saddr = info->saddr; |
| 681 | |
| 682 | if (self->iriap) { |
| 683 | IRDA_WARNING("%s(), busy with a previous query\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 684 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | return -EBUSY; |
| 686 | } |
| 687 | |
| 688 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
| 689 | ircomm_tty_getvalue_confirm); |
| 690 | |
| 691 | iriap_getvaluebyclass_request(self->iriap, |
| 692 | self->saddr, self->daddr, |
| 693 | "IrDA:IrCOMM", "Parameters"); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 694 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 696 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); |
| 697 | break; |
| 698 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 699 | del_timer(&self->watchdog_timer); |
| 700 | |
| 701 | /* Accept connection */ |
| 702 | ircomm_connect_response(self->ircomm, NULL); |
| 703 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 704 | break; |
| 705 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 706 | /* Just stay idle */ |
| 707 | break; |
| 708 | case IRCOMM_TTY_DETACH_CABLE: |
| 709 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 710 | break; |
| 711 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 712 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | ircomm_tty_event[event]); |
| 714 | ret = -EINVAL; |
| 715 | } |
| 716 | return ret; |
| 717 | } |
| 718 | |
| 719 | /* |
| 720 | * Function ircomm_tty_state_search (self, event, skb, info) |
| 721 | * |
| 722 | * Trying to discover an IrCOMM device |
| 723 | * |
| 724 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 725 | static int ircomm_tty_state_search(struct ircomm_tty_cb *self, |
| 726 | IRCOMM_TTY_EVENT event, |
| 727 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | struct ircomm_tty_info *info) |
| 729 | { |
| 730 | int ret = 0; |
| 731 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 732 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 734 | |
| 735 | switch (event) { |
| 736 | case IRCOMM_TTY_DISCOVERY_INDICATION: |
| 737 | self->daddr = info->daddr; |
| 738 | self->saddr = info->saddr; |
| 739 | |
| 740 | if (self->iriap) { |
| 741 | IRDA_WARNING("%s(), busy with a previous query\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 742 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | return -EBUSY; |
| 744 | } |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 745 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
| 747 | ircomm_tty_getvalue_confirm); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | if (self->service_type == IRCOMM_3_WIRE_RAW) { |
| 750 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 751 | self->daddr, "IrLPT", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | "IrDA:IrLMP:LsapSel"); |
| 753 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); |
| 754 | } else { |
| 755 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 756 | self->daddr, |
| 757 | "IrDA:IrCOMM", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | "Parameters"); |
| 759 | |
| 760 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_PARAMETERS); |
| 761 | } |
| 762 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 763 | break; |
| 764 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 765 | del_timer(&self->watchdog_timer); |
| 766 | ircomm_tty_ias_unregister(self); |
| 767 | |
| 768 | /* Accept connection */ |
| 769 | ircomm_connect_response(self->ircomm, NULL); |
| 770 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 771 | break; |
| 772 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 773 | #if 1 |
| 774 | /* Give up */ |
| 775 | #else |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 776 | /* Try to discover any remote devices */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 778 | irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); |
| 779 | #endif |
| 780 | break; |
| 781 | case IRCOMM_TTY_DETACH_CABLE: |
| 782 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 783 | break; |
| 784 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 785 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | ircomm_tty_event[event]); |
| 787 | ret = -EINVAL; |
| 788 | } |
| 789 | return ret; |
| 790 | } |
| 791 | |
| 792 | /* |
| 793 | * Function ircomm_tty_state_query (self, event, skb, info) |
| 794 | * |
| 795 | * Querying the remote LM-IAS for IrCOMM parameters |
| 796 | * |
| 797 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 798 | static int ircomm_tty_state_query_parameters(struct ircomm_tty_cb *self, |
| 799 | IRCOMM_TTY_EVENT event, |
| 800 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | struct ircomm_tty_info *info) |
| 802 | { |
| 803 | int ret = 0; |
| 804 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 805 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 807 | |
| 808 | switch (event) { |
| 809 | case IRCOMM_TTY_GOT_PARAMETERS: |
| 810 | if (self->iriap) { |
| 811 | IRDA_WARNING("%s(), busy with a previous query\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 812 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | return -EBUSY; |
| 814 | } |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, |
| 817 | ircomm_tty_getvalue_confirm); |
| 818 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 819 | iriap_getvaluebyclass_request(self->iriap, self->saddr, |
| 820 | self->daddr, "IrDA:IrCOMM", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | "IrDA:TinyTP:LsapSel"); |
| 822 | |
| 823 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 824 | ircomm_tty_next_state(self, IRCOMM_TTY_QUERY_LSAP_SEL); |
| 825 | break; |
| 826 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 827 | /* Go back to search mode */ |
| 828 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 829 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | break; |
| 831 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 832 | del_timer(&self->watchdog_timer); |
| 833 | ircomm_tty_ias_unregister(self); |
| 834 | |
| 835 | /* Accept connection */ |
| 836 | ircomm_connect_response(self->ircomm, NULL); |
| 837 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 838 | break; |
| 839 | case IRCOMM_TTY_DETACH_CABLE: |
| 840 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 841 | break; |
| 842 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 843 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | ircomm_tty_event[event]); |
| 845 | ret = -EINVAL; |
| 846 | } |
| 847 | return ret; |
| 848 | } |
| 849 | |
| 850 | /* |
| 851 | * Function ircomm_tty_state_query_lsap_sel (self, event, skb, info) |
| 852 | * |
| 853 | * Query remote LM-IAS for the LSAP selector which we can connect to |
| 854 | * |
| 855 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 856 | static int ircomm_tty_state_query_lsap_sel(struct ircomm_tty_cb *self, |
| 857 | IRCOMM_TTY_EVENT event, |
| 858 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | struct ircomm_tty_info *info) |
| 860 | { |
| 861 | int ret = 0; |
| 862 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 863 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 865 | |
| 866 | switch (event) { |
| 867 | case IRCOMM_TTY_GOT_LSAPSEL: |
| 868 | /* Connect to remote device */ |
| 869 | ret = ircomm_connect_request(self->ircomm, self->dlsap_sel, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 870 | self->saddr, self->daddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | NULL, self->service_type); |
| 872 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 873 | ircomm_tty_next_state(self, IRCOMM_TTY_SETUP); |
| 874 | break; |
| 875 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 876 | /* Go back to search mode */ |
| 877 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
| 878 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 879 | break; |
| 880 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 881 | del_timer(&self->watchdog_timer); |
| 882 | ircomm_tty_ias_unregister(self); |
| 883 | |
| 884 | /* Accept connection */ |
| 885 | ircomm_connect_response(self->ircomm, NULL); |
| 886 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 887 | break; |
| 888 | case IRCOMM_TTY_DETACH_CABLE: |
| 889 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 890 | break; |
| 891 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 892 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | ircomm_tty_event[event]); |
| 894 | ret = -EINVAL; |
| 895 | } |
| 896 | return ret; |
| 897 | } |
| 898 | |
| 899 | /* |
| 900 | * Function ircomm_tty_state_setup (self, event, skb, info) |
| 901 | * |
| 902 | * Trying to connect |
| 903 | * |
| 904 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 905 | static int ircomm_tty_state_setup(struct ircomm_tty_cb *self, |
| 906 | IRCOMM_TTY_EVENT event, |
| 907 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | struct ircomm_tty_info *info) |
| 909 | { |
| 910 | int ret = 0; |
| 911 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 912 | IRDA_DEBUG(2, "%s: state=%s, event=%s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | ircomm_tty_state[self->state], ircomm_tty_event[event]); |
| 914 | |
| 915 | switch (event) { |
| 916 | case IRCOMM_TTY_CONNECT_CONFIRM: |
| 917 | del_timer(&self->watchdog_timer); |
| 918 | ircomm_tty_ias_unregister(self); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 919 | |
| 920 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | * Send initial parameters. This will also send out queued |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 922 | * parameters waiting for the connection to come up |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | */ |
| 924 | ircomm_tty_send_initial_parameters(self); |
| 925 | ircomm_tty_link_established(self); |
| 926 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 927 | break; |
| 928 | case IRCOMM_TTY_CONNECT_INDICATION: |
| 929 | del_timer(&self->watchdog_timer); |
| 930 | ircomm_tty_ias_unregister(self); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 931 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | /* Accept connection */ |
| 933 | ircomm_connect_response(self->ircomm, NULL); |
| 934 | ircomm_tty_next_state(self, IRCOMM_TTY_READY); |
| 935 | break; |
| 936 | case IRCOMM_TTY_WD_TIMER_EXPIRED: |
| 937 | /* Go back to search mode */ |
| 938 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
| 939 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 940 | break; |
| 941 | case IRCOMM_TTY_DETACH_CABLE: |
| 942 | /* ircomm_disconnect_request(self->ircomm, NULL); */ |
| 943 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 944 | break; |
| 945 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 946 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | ircomm_tty_event[event]); |
| 948 | ret = -EINVAL; |
| 949 | } |
| 950 | return ret; |
| 951 | } |
| 952 | |
| 953 | /* |
| 954 | * Function ircomm_tty_state_ready (self, event, skb, info) |
| 955 | * |
| 956 | * IrCOMM is now connected |
| 957 | * |
| 958 | */ |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 959 | static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, |
| 960 | IRCOMM_TTY_EVENT event, |
| 961 | struct sk_buff *skb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | struct ircomm_tty_info *info) |
| 963 | { |
| 964 | int ret = 0; |
| 965 | |
| 966 | switch (event) { |
| 967 | case IRCOMM_TTY_DATA_REQUEST: |
| 968 | ret = ircomm_data_request(self->ircomm, skb); |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 969 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | case IRCOMM_TTY_DETACH_CABLE: |
| 971 | ircomm_disconnect_request(self->ircomm, NULL); |
| 972 | ircomm_tty_next_state(self, IRCOMM_TTY_IDLE); |
| 973 | break; |
| 974 | case IRCOMM_TTY_DISCONNECT_INDICATION: |
| 975 | ircomm_tty_ias_register(self); |
| 976 | ircomm_tty_next_state(self, IRCOMM_TTY_SEARCH); |
| 977 | ircomm_tty_start_watchdog_timer(self, 3*HZ); |
| 978 | |
| 979 | if (self->flags & ASYNC_CHECK_CD) { |
| 980 | /* Drop carrier */ |
| 981 | self->settings.dce = IRCOMM_DELTA_CD; |
| 982 | ircomm_tty_check_modem_status(self); |
| 983 | } else { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 984 | IRDA_DEBUG(0, "%s(), hanging up!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | if (self->tty) |
| 986 | tty_hangup(self->tty); |
| 987 | } |
| 988 | break; |
| 989 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame^] | 990 | IRDA_DEBUG(2, "%s(), unknown event: %s\n", __func__ , |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | ircomm_tty_event[event]); |
| 992 | ret = -EINVAL; |
| 993 | } |
| 994 | return ret; |
| 995 | } |
| 996 | |