Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) ST-Ericsson AB 2010 |
| 3 | * Author: Sjur Brendeland/sjur.brandeland@stericsson.com |
| 4 | * License terms: GNU General Public License (GPL) version 2 |
| 5 | */ |
| 6 | #include <linux/kernel.h> |
| 7 | #include <linux/stddef.h> |
Stephen Rothwell | 6c57990 | 2010-04-01 00:28:49 -0700 | [diff] [blame] | 8 | #include <linux/slab.h> |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 9 | #include <net/caif/caif_layer.h> |
| 10 | #include <net/caif/cfpkt.h> |
| 11 | #include <net/caif/cfcnfg.h> |
| 12 | #include <net/caif/cfctrl.h> |
| 13 | #include <net/caif/cfmuxl.h> |
| 14 | #include <net/caif/cffrml.h> |
| 15 | #include <net/caif/cfserl.h> |
| 16 | #include <net/caif/cfsrvl.h> |
| 17 | |
| 18 | #include <linux/module.h> |
| 19 | #include <asm/atomic.h> |
| 20 | |
| 21 | #define MAX_PHY_LAYERS 7 |
| 22 | #define PHY_NAME_LEN 20 |
| 23 | |
| 24 | #define container_obj(layr) container_of(layr, struct cfcnfg, layer) |
| 25 | |
| 26 | /* Information about CAIF physical interfaces held by Config Module in order |
| 27 | * to manage physical interfaces |
| 28 | */ |
| 29 | struct cfcnfg_phyinfo { |
| 30 | /* Pointer to the layer below the MUX (framing layer) */ |
| 31 | struct cflayer *frm_layer; |
| 32 | /* Pointer to the lowest actual physical layer */ |
| 33 | struct cflayer *phy_layer; |
| 34 | /* Unique identifier of the physical interface */ |
| 35 | unsigned int id; |
| 36 | /* Preference of the physical in interface */ |
| 37 | enum cfcnfg_phy_preference pref; |
| 38 | |
| 39 | /* Reference count, number of channels using the device */ |
| 40 | int phy_ref_count; |
| 41 | |
| 42 | /* Information about the physical device */ |
| 43 | struct dev_info dev_info; |
| 44 | }; |
| 45 | |
| 46 | struct cfcnfg { |
| 47 | struct cflayer layer; |
| 48 | struct cflayer *ctrl; |
| 49 | struct cflayer *mux; |
| 50 | u8 last_phyid; |
| 51 | struct cfcnfg_phyinfo phy_layers[MAX_PHY_LAYERS]; |
| 52 | }; |
| 53 | |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 54 | static void cfcnfg_linkup_rsp(struct cflayer *layer, u8 channel_id, |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 55 | enum cfctrl_srv serv, u8 phyid, |
| 56 | struct cflayer *adapt_layer); |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 57 | static void cfcnfg_linkdestroy_rsp(struct cflayer *layer, u8 channel_id, |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 58 | struct cflayer *client_layer); |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 59 | static void cfcnfg_reject_rsp(struct cflayer *layer, u8 channel_id, |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 60 | struct cflayer *adapt_layer); |
| 61 | static void cfctrl_resp_func(void); |
| 62 | static void cfctrl_enum_resp(void); |
| 63 | |
| 64 | struct cfcnfg *cfcnfg_create(void) |
| 65 | { |
| 66 | struct cfcnfg *this; |
| 67 | struct cfctrl_rsp *resp; |
| 68 | /* Initiate this layer */ |
| 69 | this = kmalloc(sizeof(struct cfcnfg), GFP_ATOMIC); |
| 70 | if (!this) { |
| 71 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
| 72 | return NULL; |
| 73 | } |
| 74 | memset(this, 0, sizeof(struct cfcnfg)); |
| 75 | this->mux = cfmuxl_create(); |
| 76 | if (!this->mux) |
| 77 | goto out_of_mem; |
| 78 | this->ctrl = cfctrl_create(); |
| 79 | if (!this->ctrl) |
| 80 | goto out_of_mem; |
| 81 | /* Initiate response functions */ |
| 82 | resp = cfctrl_get_respfuncs(this->ctrl); |
| 83 | resp->enum_rsp = cfctrl_enum_resp; |
| 84 | resp->linkerror_ind = cfctrl_resp_func; |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 85 | resp->linkdestroy_rsp = cfcnfg_linkdestroy_rsp; |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 86 | resp->sleep_rsp = cfctrl_resp_func; |
| 87 | resp->wake_rsp = cfctrl_resp_func; |
| 88 | resp->restart_rsp = cfctrl_resp_func; |
| 89 | resp->radioset_rsp = cfctrl_resp_func; |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 90 | resp->linksetup_rsp = cfcnfg_linkup_rsp; |
| 91 | resp->reject_rsp = cfcnfg_reject_rsp; |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 92 | |
| 93 | this->last_phyid = 1; |
| 94 | |
| 95 | cfmuxl_set_uplayer(this->mux, this->ctrl, 0); |
| 96 | layer_set_dn(this->ctrl, this->mux); |
| 97 | layer_set_up(this->ctrl, this); |
| 98 | return this; |
| 99 | out_of_mem: |
| 100 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
| 101 | kfree(this->mux); |
| 102 | kfree(this->ctrl); |
| 103 | kfree(this); |
| 104 | return NULL; |
| 105 | } |
| 106 | EXPORT_SYMBOL(cfcnfg_create); |
| 107 | |
| 108 | void cfcnfg_remove(struct cfcnfg *cfg) |
| 109 | { |
| 110 | if (cfg) { |
| 111 | kfree(cfg->mux); |
| 112 | kfree(cfg->ctrl); |
| 113 | kfree(cfg); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | static void cfctrl_resp_func(void) |
| 118 | { |
| 119 | } |
| 120 | |
| 121 | static void cfctrl_enum_resp(void) |
| 122 | { |
| 123 | } |
| 124 | |
| 125 | struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg, |
| 126 | enum cfcnfg_phy_preference phy_pref) |
| 127 | { |
| 128 | u16 i; |
| 129 | |
| 130 | /* Try to match with specified preference */ |
| 131 | for (i = 1; i < MAX_PHY_LAYERS; i++) { |
| 132 | if (cnfg->phy_layers[i].id == i && |
| 133 | cnfg->phy_layers[i].pref == phy_pref && |
| 134 | cnfg->phy_layers[i].frm_layer != NULL) { |
| 135 | caif_assert(cnfg->phy_layers != NULL); |
| 136 | caif_assert(cnfg->phy_layers[i].id == i); |
| 137 | return &cnfg->phy_layers[i].dev_info; |
| 138 | } |
| 139 | } |
| 140 | /* Otherwise just return something */ |
| 141 | for (i = 1; i < MAX_PHY_LAYERS; i++) { |
| 142 | if (cnfg->phy_layers[i].id == i) { |
| 143 | caif_assert(cnfg->phy_layers != NULL); |
| 144 | caif_assert(cnfg->phy_layers[i].id == i); |
| 145 | return &cnfg->phy_layers[i].dev_info; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | return NULL; |
| 150 | } |
| 151 | |
| 152 | static struct cfcnfg_phyinfo *cfcnfg_get_phyinfo(struct cfcnfg *cnfg, |
| 153 | u8 phyid) |
| 154 | { |
| 155 | int i; |
| 156 | /* Try to match with specified preference */ |
| 157 | for (i = 0; i < MAX_PHY_LAYERS; i++) |
| 158 | if (cnfg->phy_layers[i].frm_layer != NULL && |
| 159 | cnfg->phy_layers[i].id == phyid) |
| 160 | return &cnfg->phy_layers[i]; |
| 161 | return NULL; |
| 162 | } |
| 163 | |
| 164 | int cfcnfg_get_named(struct cfcnfg *cnfg, char *name) |
| 165 | { |
| 166 | int i; |
| 167 | |
| 168 | /* Try to match with specified name */ |
| 169 | for (i = 0; i < MAX_PHY_LAYERS; i++) { |
| 170 | if (cnfg->phy_layers[i].frm_layer != NULL |
| 171 | && strcmp(cnfg->phy_layers[i].phy_layer->name, |
| 172 | name) == 0) |
| 173 | return cnfg->phy_layers[i].frm_layer->id; |
| 174 | } |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | /* |
| 179 | * NOTE: What happens on destroy failure: |
| 180 | * 1a) No response - Too early |
| 181 | * This will not happen because enumerate has already |
| 182 | * completed. |
| 183 | * 1b) No response - FATAL |
| 184 | * Not handled, but this should be a CAIF PROTOCOL ERROR |
| 185 | * Modem error, response is really expected - this |
| 186 | * case is not really handled. |
| 187 | * 2) O/E-bit indicate error |
| 188 | * Ignored - this link is destroyed anyway. |
| 189 | * 3) Not able to match on request |
| 190 | * Not handled, but this should be a CAIF PROTOCOL ERROR |
| 191 | * 4) Link-Error - (no response) |
| 192 | * Not handled, but this should be a CAIF PROTOCOL ERROR |
| 193 | */ |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 194 | int cfcnfg_disconn_adapt_layer(struct cfcnfg *cnfg, struct cflayer *adap_layer) |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 195 | { |
| 196 | u8 channel_id = 0; |
| 197 | int ret = 0; |
| 198 | struct cfcnfg_phyinfo *phyinfo = NULL; |
| 199 | u8 phyid = 0; |
| 200 | |
| 201 | caif_assert(adap_layer != NULL); |
| 202 | channel_id = adap_layer->id; |
| 203 | if (channel_id == 0) { |
| 204 | pr_err("CAIF: %s():adap_layer->id is 0\n", __func__); |
| 205 | ret = -ENOTCONN; |
| 206 | goto end; |
| 207 | } |
| 208 | |
| 209 | if (adap_layer->dn == NULL) { |
| 210 | pr_err("CAIF: %s():adap_layer->dn is NULL\n", __func__); |
| 211 | ret = -ENODEV; |
| 212 | goto end; |
| 213 | } |
| 214 | |
| 215 | if (adap_layer->dn != NULL) |
| 216 | phyid = cfsrvl_getphyid(adap_layer->dn); |
| 217 | |
| 218 | phyinfo = cfcnfg_get_phyinfo(cnfg, phyid); |
| 219 | if (phyinfo == NULL) { |
| 220 | pr_warning("CAIF: %s(): No interface to send disconnect to\n", |
| 221 | __func__); |
| 222 | ret = -ENODEV; |
| 223 | goto end; |
| 224 | } |
| 225 | |
| 226 | if (phyinfo->id != phyid |
| 227 | || phyinfo->phy_layer->id != phyid |
| 228 | || phyinfo->frm_layer->id != phyid) { |
| 229 | |
| 230 | pr_err("CAIF: %s(): Inconsistency in phy registration\n", |
| 231 | __func__); |
| 232 | ret = -EINVAL; |
| 233 | goto end; |
| 234 | } |
| 235 | |
| 236 | ret = cfctrl_linkdown_req(cnfg->ctrl, channel_id, adap_layer); |
| 237 | |
| 238 | end: |
| 239 | if (phyinfo != NULL && --phyinfo->phy_ref_count == 0 && |
| 240 | phyinfo->phy_layer != NULL && |
| 241 | phyinfo->phy_layer->modemcmd != NULL) { |
| 242 | phyinfo->phy_layer->modemcmd(phyinfo->phy_layer, |
| 243 | _CAIF_MODEMCMD_PHYIF_USELESS); |
| 244 | } |
| 245 | return ret; |
| 246 | |
| 247 | } |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 248 | EXPORT_SYMBOL(cfcnfg_disconn_adapt_layer); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 249 | |
Sjur Braendeland | 5b20865 | 2010-04-28 08:54:36 +0000 | [diff] [blame^] | 250 | void cfcnfg_release_adap_layer(struct cflayer *adap_layer) |
| 251 | { |
| 252 | if (adap_layer->dn) |
| 253 | cfsrvl_put(adap_layer->dn); |
| 254 | } |
| 255 | EXPORT_SYMBOL(cfcnfg_release_adap_layer); |
| 256 | |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 257 | static void cfcnfg_linkdestroy_rsp(struct cflayer *layer, u8 channel_id, |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 258 | struct cflayer *client_layer) |
| 259 | { |
| 260 | struct cfcnfg *cnfg = container_obj(layer); |
| 261 | struct cflayer *servl; |
| 262 | |
| 263 | /* |
| 264 | * 1) Remove service from the MUX layer. The MUX must |
| 265 | * guarante that no more payload sent "upwards" (receive) |
| 266 | */ |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 267 | servl = cfmuxl_remove_uplayer(cnfg->mux, channel_id); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 268 | |
| 269 | if (servl == NULL) { |
| 270 | pr_err("CAIF: %s(): PROTOCOL ERROR " |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 271 | "- Error removing service_layer Channel_Id(%d)", |
| 272 | __func__, channel_id); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 273 | return; |
| 274 | } |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 275 | caif_assert(channel_id == servl->id); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 276 | |
| 277 | if (servl != client_layer && servl->up != client_layer) { |
| 278 | pr_err("CAIF: %s(): Error removing service_layer " |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 279 | "Channel_Id(%d) %p %p", |
| 280 | __func__, channel_id, (void *) servl, |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 281 | (void *) client_layer); |
| 282 | return; |
| 283 | } |
| 284 | |
| 285 | /* |
| 286 | * 2) DEINIT_RSP must guarantee that no more packets are transmitted |
| 287 | * from client (adap_layer) when it returns. |
| 288 | */ |
| 289 | |
| 290 | if (servl->ctrlcmd == NULL) { |
| 291 | pr_err("CAIF: %s(): Error servl->ctrlcmd == NULL", __func__); |
| 292 | return; |
| 293 | } |
| 294 | |
| 295 | servl->ctrlcmd(servl, CAIF_CTRLCMD_DEINIT_RSP, 0); |
| 296 | |
| 297 | /* 3) It is now safe to destroy the service layer. */ |
| 298 | cfservl_destroy(servl); |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * NOTE: What happens on linksetup failure: |
| 303 | * 1a) No response - Too early |
| 304 | * This will not happen because enumerate is secured |
| 305 | * before using interface. |
| 306 | * 1b) No response - FATAL |
| 307 | * Not handled, but this should be a CAIF PROTOCOL ERROR |
| 308 | * Modem error, response is really expected - this case is |
| 309 | * not really handled. |
| 310 | * 2) O/E-bit indicate error |
| 311 | * Handled in cnfg_reject_rsp |
| 312 | * 3) Not able to match on request |
| 313 | * Not handled, but this should be a CAIF PROTOCOL ERROR |
| 314 | * 4) Link-Error - (no response) |
| 315 | * Not handled, but this should be a CAIF PROTOCOL ERROR |
| 316 | */ |
| 317 | |
| 318 | int |
| 319 | cfcnfg_add_adaptation_layer(struct cfcnfg *cnfg, |
| 320 | struct cfctrl_link_param *param, |
| 321 | struct cflayer *adap_layer) |
| 322 | { |
| 323 | struct cflayer *frml; |
| 324 | if (adap_layer == NULL) { |
| 325 | pr_err("CAIF: %s(): adap_layer is zero", __func__); |
| 326 | return -EINVAL; |
| 327 | } |
| 328 | if (adap_layer->receive == NULL) { |
| 329 | pr_err("CAIF: %s(): adap_layer->receive is NULL", __func__); |
| 330 | return -EINVAL; |
| 331 | } |
| 332 | if (adap_layer->ctrlcmd == NULL) { |
| 333 | pr_err("CAIF: %s(): adap_layer->ctrlcmd == NULL", __func__); |
| 334 | return -EINVAL; |
| 335 | } |
| 336 | frml = cnfg->phy_layers[param->phyid].frm_layer; |
| 337 | if (frml == NULL) { |
| 338 | pr_err("CAIF: %s(): Specified PHY type does not exist!", |
| 339 | __func__); |
| 340 | return -ENODEV; |
| 341 | } |
| 342 | caif_assert(param->phyid == cnfg->phy_layers[param->phyid].id); |
| 343 | caif_assert(cnfg->phy_layers[param->phyid].frm_layer->id == |
| 344 | param->phyid); |
| 345 | caif_assert(cnfg->phy_layers[param->phyid].phy_layer->id == |
| 346 | param->phyid); |
| 347 | /* FIXME: ENUMERATE INITIALLY WHEN ACTIVATING PHYSICAL INTERFACE */ |
| 348 | cfctrl_enum_req(cnfg->ctrl, param->phyid); |
| 349 | cfctrl_linkup_request(cnfg->ctrl, param, adap_layer); |
| 350 | return 0; |
| 351 | } |
| 352 | EXPORT_SYMBOL(cfcnfg_add_adaptation_layer); |
| 353 | |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 354 | static void cfcnfg_reject_rsp(struct cflayer *layer, u8 channel_id, |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 355 | struct cflayer *adapt_layer) |
| 356 | { |
| 357 | if (adapt_layer != NULL && adapt_layer->ctrlcmd != NULL) |
| 358 | adapt_layer->ctrlcmd(adapt_layer, |
| 359 | CAIF_CTRLCMD_INIT_FAIL_RSP, 0); |
| 360 | } |
| 361 | |
| 362 | static void |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 363 | cfcnfg_linkup_rsp(struct cflayer *layer, u8 channel_id, enum cfctrl_srv serv, |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 364 | u8 phyid, struct cflayer *adapt_layer) |
| 365 | { |
| 366 | struct cfcnfg *cnfg = container_obj(layer); |
| 367 | struct cflayer *servicel = NULL; |
| 368 | struct cfcnfg_phyinfo *phyinfo; |
| 369 | if (adapt_layer == NULL) { |
| 370 | pr_err("CAIF: %s(): PROTOCOL ERROR " |
| 371 | "- LinkUp Request/Response did not match\n", __func__); |
| 372 | return; |
| 373 | } |
| 374 | |
| 375 | caif_assert(cnfg != NULL); |
| 376 | caif_assert(phyid != 0); |
| 377 | phyinfo = &cnfg->phy_layers[phyid]; |
| 378 | caif_assert(phyinfo != NULL); |
| 379 | caif_assert(phyinfo->id == phyid); |
| 380 | caif_assert(phyinfo->phy_layer != NULL); |
| 381 | caif_assert(phyinfo->phy_layer->id == phyid); |
| 382 | |
| 383 | if (phyinfo != NULL && |
| 384 | phyinfo->phy_ref_count++ == 0 && |
| 385 | phyinfo->phy_layer != NULL && |
| 386 | phyinfo->phy_layer->modemcmd != NULL) { |
| 387 | caif_assert(phyinfo->phy_layer->id == phyid); |
| 388 | phyinfo->phy_layer->modemcmd(phyinfo->phy_layer, |
| 389 | _CAIF_MODEMCMD_PHYIF_USEFULL); |
| 390 | |
| 391 | } |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 392 | adapt_layer->id = channel_id; |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 393 | |
| 394 | switch (serv) { |
| 395 | case CFCTRL_SRV_VEI: |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 396 | servicel = cfvei_create(channel_id, &phyinfo->dev_info); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 397 | break; |
| 398 | case CFCTRL_SRV_DATAGRAM: |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 399 | servicel = cfdgml_create(channel_id, &phyinfo->dev_info); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 400 | break; |
| 401 | case CFCTRL_SRV_RFM: |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 402 | servicel = cfrfml_create(channel_id, &phyinfo->dev_info); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 403 | break; |
| 404 | case CFCTRL_SRV_UTIL: |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 405 | servicel = cfutill_create(channel_id, &phyinfo->dev_info); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 406 | break; |
| 407 | case CFCTRL_SRV_VIDEO: |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 408 | servicel = cfvidl_create(channel_id, &phyinfo->dev_info); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 409 | break; |
| 410 | case CFCTRL_SRV_DBG: |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 411 | servicel = cfdbgl_create(channel_id, &phyinfo->dev_info); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 412 | break; |
| 413 | default: |
| 414 | pr_err("CAIF: %s(): Protocol error. " |
| 415 | "Link setup response - unknown channel type\n", |
| 416 | __func__); |
| 417 | return; |
| 418 | } |
| 419 | if (!servicel) { |
| 420 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
| 421 | return; |
| 422 | } |
| 423 | layer_set_dn(servicel, cnfg->mux); |
Sjur Braendeland | e539d83 | 2010-04-28 08:54:35 +0000 | [diff] [blame] | 424 | cfmuxl_set_uplayer(cnfg->mux, servicel, channel_id); |
Sjur Braendeland | 15c9ac0 | 2010-03-30 13:56:24 +0000 | [diff] [blame] | 425 | layer_set_up(servicel, adapt_layer); |
| 426 | layer_set_dn(adapt_layer, servicel); |
| 427 | servicel->ctrlcmd(servicel, CAIF_CTRLCMD_INIT_RSP, 0); |
| 428 | } |
| 429 | |
| 430 | void |
| 431 | cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type, |
| 432 | void *dev, struct cflayer *phy_layer, u16 *phyid, |
| 433 | enum cfcnfg_phy_preference pref, |
| 434 | bool fcs, bool stx) |
| 435 | { |
| 436 | struct cflayer *frml; |
| 437 | struct cflayer *phy_driver = NULL; |
| 438 | int i; |
| 439 | |
| 440 | |
| 441 | if (cnfg->phy_layers[cnfg->last_phyid].frm_layer == NULL) { |
| 442 | *phyid = cnfg->last_phyid; |
| 443 | |
| 444 | /* range: * 1..(MAX_PHY_LAYERS-1) */ |
| 445 | cnfg->last_phyid = |
| 446 | (cnfg->last_phyid % (MAX_PHY_LAYERS - 1)) + 1; |
| 447 | } else { |
| 448 | *phyid = 0; |
| 449 | for (i = 1; i < MAX_PHY_LAYERS; i++) { |
| 450 | if (cnfg->phy_layers[i].frm_layer == NULL) { |
| 451 | *phyid = i; |
| 452 | break; |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | if (*phyid == 0) { |
| 457 | pr_err("CAIF: %s(): No Available PHY ID\n", __func__); |
| 458 | return; |
| 459 | } |
| 460 | |
| 461 | switch (phy_type) { |
| 462 | case CFPHYTYPE_FRAG: |
| 463 | phy_driver = |
| 464 | cfserl_create(CFPHYTYPE_FRAG, *phyid, stx); |
| 465 | if (!phy_driver) { |
| 466 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
| 467 | return; |
| 468 | } |
| 469 | |
| 470 | break; |
| 471 | case CFPHYTYPE_CAIF: |
| 472 | phy_driver = NULL; |
| 473 | break; |
| 474 | default: |
| 475 | pr_err("CAIF: %s(): %d", __func__, phy_type); |
| 476 | return; |
| 477 | break; |
| 478 | } |
| 479 | |
| 480 | phy_layer->id = *phyid; |
| 481 | cnfg->phy_layers[*phyid].pref = pref; |
| 482 | cnfg->phy_layers[*phyid].id = *phyid; |
| 483 | cnfg->phy_layers[*phyid].dev_info.id = *phyid; |
| 484 | cnfg->phy_layers[*phyid].dev_info.dev = dev; |
| 485 | cnfg->phy_layers[*phyid].phy_layer = phy_layer; |
| 486 | cnfg->phy_layers[*phyid].phy_ref_count = 0; |
| 487 | phy_layer->type = phy_type; |
| 488 | frml = cffrml_create(*phyid, fcs); |
| 489 | if (!frml) { |
| 490 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
| 491 | return; |
| 492 | } |
| 493 | cnfg->phy_layers[*phyid].frm_layer = frml; |
| 494 | cfmuxl_set_dnlayer(cnfg->mux, frml, *phyid); |
| 495 | layer_set_up(frml, cnfg->mux); |
| 496 | |
| 497 | if (phy_driver != NULL) { |
| 498 | phy_driver->id = *phyid; |
| 499 | layer_set_dn(frml, phy_driver); |
| 500 | layer_set_up(phy_driver, frml); |
| 501 | layer_set_dn(phy_driver, phy_layer); |
| 502 | layer_set_up(phy_layer, phy_driver); |
| 503 | } else { |
| 504 | layer_set_dn(frml, phy_layer); |
| 505 | layer_set_up(phy_layer, frml); |
| 506 | } |
| 507 | } |
| 508 | EXPORT_SYMBOL(cfcnfg_add_phy_layer); |
| 509 | |
| 510 | int cfcnfg_del_phy_layer(struct cfcnfg *cnfg, struct cflayer *phy_layer) |
| 511 | { |
| 512 | struct cflayer *frml, *frml_dn; |
| 513 | u16 phyid; |
| 514 | phyid = phy_layer->id; |
| 515 | caif_assert(phyid == cnfg->phy_layers[phyid].id); |
| 516 | caif_assert(phy_layer == cnfg->phy_layers[phyid].phy_layer); |
| 517 | caif_assert(phy_layer->id == phyid); |
| 518 | caif_assert(cnfg->phy_layers[phyid].frm_layer->id == phyid); |
| 519 | |
| 520 | memset(&cnfg->phy_layers[phy_layer->id], 0, |
| 521 | sizeof(struct cfcnfg_phyinfo)); |
| 522 | frml = cfmuxl_remove_dnlayer(cnfg->mux, phy_layer->id); |
| 523 | frml_dn = frml->dn; |
| 524 | cffrml_set_uplayer(frml, NULL); |
| 525 | cffrml_set_dnlayer(frml, NULL); |
| 526 | kfree(frml); |
| 527 | |
| 528 | if (phy_layer != frml_dn) { |
| 529 | layer_set_up(frml_dn, NULL); |
| 530 | layer_set_dn(frml_dn, NULL); |
| 531 | kfree(frml_dn); |
| 532 | } |
| 533 | layer_set_up(phy_layer, NULL); |
| 534 | return 0; |
| 535 | } |
| 536 | EXPORT_SYMBOL(cfcnfg_del_phy_layer); |