The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2000-2012 Broadcom Corporation |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at: |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | * |
| 17 | ******************************************************************************/ |
| 18 | |
| 19 | /***************************************************************************** |
| 20 | * |
| 21 | * This file contains functions that manages ACL link modes. |
| 22 | * This includes operations such as active, hold, |
| 23 | * park and sniff modes. |
| 24 | * |
| 25 | * This module contains both internal and external (API) |
| 26 | * functions. External (API) functions are distinguishable |
| 27 | * by their names beginning with uppercase BTM. |
| 28 | * |
| 29 | *****************************************************************************/ |
| 30 | |
Chris Manton | f802700 | 2015-03-12 09:22:48 -0700 | [diff] [blame] | 31 | #define LOG_TAG "bt_btm_pm" |
Sharvil Nanavati | 5cf0336 | 2014-11-14 17:04:46 -0800 | [diff] [blame] | 32 | |
Marie Janssen | 49a8670 | 2015-07-08 11:48:57 -0700 | [diff] [blame] | 33 | #include <stddef.h> |
| 34 | #include <stdio.h> |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 35 | #include <stdlib.h> |
| 36 | #include <string.h> |
Sharvil Nanavati | 4480276 | 2014-12-23 23:08:58 -0800 | [diff] [blame] | 37 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 38 | #include "bt_types.h" |
Marie Janssen | 49a8670 | 2015-07-08 11:48:57 -0700 | [diff] [blame] | 39 | #include "bt_utils.h" |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 40 | #include "btm_api.h" |
| 41 | #include "btm_int.h" |
Marie Janssen | 49a8670 | 2015-07-08 11:48:57 -0700 | [diff] [blame] | 42 | #include "btu.h" |
| 43 | #include "gki.h" |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 44 | #include "hcidefs.h" |
Marie Janssen | 49a8670 | 2015-07-08 11:48:57 -0700 | [diff] [blame] | 45 | #include "hcimsgs.h" |
| 46 | #include "l2c_int.h" |
Sharvil Nanavati | 4480276 | 2014-12-23 23:08:58 -0800 | [diff] [blame] | 47 | #include "osi/include/log.h" |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 48 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 49 | /*****************************************************************************/ |
| 50 | /* to handle different modes */ |
| 51 | /*****************************************************************************/ |
| 52 | #define BTM_PM_STORED_MASK 0x80 /* set this mask if the command is stored */ |
| 53 | #define BTM_PM_NUM_SET_MODES 3 /* only hold, sniff & park */ |
| 54 | |
| 55 | /* Usage: (ptr_features[ offset ] & mask )?TRUE:FALSE */ |
| 56 | /* offset to supported feature */ |
| 57 | const UINT8 btm_pm_mode_off[BTM_PM_NUM_SET_MODES] = {0, 0, 1}; |
| 58 | /* mask to supported feature */ |
| 59 | const UINT8 btm_pm_mode_msk[BTM_PM_NUM_SET_MODES] = {0x40, 0x80, 0x01}; |
| 60 | |
| 61 | #define BTM_PM_GET_MD1 1 |
| 62 | #define BTM_PM_GET_MD2 2 |
| 63 | #define BTM_PM_GET_COMP 3 |
| 64 | |
| 65 | const UINT8 btm_pm_md_comp_matrix[BTM_PM_NUM_SET_MODES*BTM_PM_NUM_SET_MODES] = |
| 66 | { |
| 67 | BTM_PM_GET_COMP, |
| 68 | BTM_PM_GET_MD2, |
| 69 | BTM_PM_GET_MD2, |
| 70 | |
| 71 | BTM_PM_GET_MD1, |
| 72 | BTM_PM_GET_COMP, |
| 73 | BTM_PM_GET_MD1, |
| 74 | |
| 75 | BTM_PM_GET_MD1, |
| 76 | BTM_PM_GET_MD2, |
| 77 | BTM_PM_GET_COMP |
| 78 | }; |
| 79 | |
| 80 | /* function prototype */ |
| 81 | static int btm_pm_find_acl_ind(BD_ADDR remote_bda); |
| 82 | static tBTM_STATUS btm_pm_snd_md_req( UINT8 pm_id, int link_ind, tBTM_PM_PWR_MD *p_mode ); |
Sharvil Nanavati | 5cf0336 | 2014-11-14 17:04:46 -0800 | [diff] [blame] | 83 | static const char *mode_to_string(tBTM_PM_MODE mode); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 84 | |
| 85 | /* |
| 86 | #ifdef BTM_PM_DEBUG |
| 87 | #undef BTM_PM_DEBUG |
| 88 | #define BTM_PM_DEBUG TRUE |
| 89 | #endif |
| 90 | */ |
| 91 | |
| 92 | #if BTM_PM_DEBUG == TRUE |
| 93 | const char * btm_pm_state_str[] = |
| 94 | { |
| 95 | "pm_active_state", |
| 96 | "pm_hold_state", |
| 97 | "pm_sniff_state", |
| 98 | "pm_park_state", |
| 99 | "pm_pend_state" |
| 100 | }; |
| 101 | |
| 102 | const char * btm_pm_event_str[] = |
| 103 | { |
| 104 | "pm_set_mode_event", |
| 105 | "pm_hci_sts_event", |
| 106 | "pm_mod_chg_event", |
| 107 | "pm_update_event" |
| 108 | }; |
| 109 | |
| 110 | const char * btm_pm_action_str[] = |
| 111 | { |
| 112 | "pm_set_mode_action", |
| 113 | "pm_update_db_action", |
| 114 | "pm_mod_chg_action", |
| 115 | "pm_hci_sts_action", |
| 116 | "pm_update_action" |
| 117 | }; |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 118 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 119 | |
| 120 | /*****************************************************************************/ |
| 121 | /* P U B L I C F U N C T I O N S */ |
| 122 | /*****************************************************************************/ |
| 123 | /******************************************************************************* |
| 124 | ** |
| 125 | ** Function BTM_PmRegister |
| 126 | ** |
| 127 | ** Description register or deregister with power manager |
| 128 | ** |
| 129 | ** Returns BTM_SUCCESS if successful, |
| 130 | ** BTM_NO_RESOURCES if no room to hold registration |
| 131 | ** BTM_ILLEGAL_VALUE |
| 132 | ** |
| 133 | *******************************************************************************/ |
| 134 | tBTM_STATUS BTM_PmRegister (UINT8 mask, UINT8 *p_pm_id, tBTM_PM_STATUS_CBACK *p_cb) |
| 135 | { |
| 136 | int xx; |
| 137 | |
| 138 | /* de-register */ |
| 139 | if(mask & BTM_PM_DEREG) |
| 140 | { |
| 141 | if(*p_pm_id >= BTM_MAX_PM_RECORDS) |
| 142 | return BTM_ILLEGAL_VALUE; |
| 143 | btm_cb.pm_reg_db[*p_pm_id].mask = BTM_PM_REC_NOT_USED; |
| 144 | return BTM_SUCCESS; |
| 145 | } |
| 146 | |
| 147 | for(xx=0; xx<BTM_MAX_PM_RECORDS; xx++) |
| 148 | { |
| 149 | /* find an unused entry */ |
| 150 | if(btm_cb.pm_reg_db[xx].mask == BTM_PM_REC_NOT_USED) |
| 151 | { |
| 152 | /* if register for notification, should provide callback routine */ |
| 153 | if(mask & BTM_PM_REG_NOTIF) |
| 154 | { |
| 155 | if(p_cb == NULL) |
| 156 | return BTM_ILLEGAL_VALUE; |
| 157 | btm_cb.pm_reg_db[xx].cback = p_cb; |
| 158 | } |
| 159 | btm_cb.pm_reg_db[xx].mask = mask; |
| 160 | *p_pm_id = xx; |
| 161 | return BTM_SUCCESS; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | return BTM_NO_RESOURCES; |
| 166 | } |
| 167 | |
| 168 | /******************************************************************************* |
| 169 | ** |
| 170 | ** Function BTM_SetPowerMode |
| 171 | ** |
| 172 | ** Description store the mode in control block or |
| 173 | ** alter ACL connection behavior. |
| 174 | ** |
| 175 | ** Returns BTM_SUCCESS if successful, |
| 176 | ** BTM_UNKNOWN_ADDR if bd addr is not active or bad |
| 177 | ** |
| 178 | *******************************************************************************/ |
| 179 | tBTM_STATUS BTM_SetPowerMode (UINT8 pm_id, BD_ADDR remote_bda, tBTM_PM_PWR_MD *p_mode) |
| 180 | { |
| 181 | UINT8 *p_features; |
| 182 | int ind, acl_ind; |
| 183 | tBTM_PM_MCB *p_cb = NULL; /* per ACL link */ |
| 184 | tBTM_PM_MODE mode; |
| 185 | int temp_pm_id; |
| 186 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 187 | if(pm_id >= BTM_MAX_PM_RECORDS) |
| 188 | pm_id = BTM_PM_SET_ONLY_ID; |
| 189 | |
| 190 | if(p_mode == NULL) |
| 191 | return BTM_ILLEGAL_VALUE; |
| 192 | |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 193 | BTM_TRACE_API( "BTM_SetPowerMode: pm_id %d BDA: %08x mode:0x%x", pm_id, |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 194 | (remote_bda[2]<<24)+(remote_bda[3]<<16)+(remote_bda[4]<<8)+remote_bda[5], p_mode->mode); |
| 195 | |
| 196 | /* take out the force bit */ |
| 197 | mode = p_mode->mode & ~BTM_PM_MD_FORCE; |
| 198 | |
| 199 | acl_ind = btm_pm_find_acl_ind(remote_bda); |
| 200 | if(acl_ind == MAX_L2CAP_LINKS) |
| 201 | return (BTM_UNKNOWN_ADDR); |
| 202 | |
| 203 | p_cb = &(btm_cb.pm_mode_db[acl_ind]); |
| 204 | |
| 205 | if(mode != BTM_PM_MD_ACTIVE) |
| 206 | { |
| 207 | /* check if the requested mode is supported */ |
| 208 | ind = mode - BTM_PM_MD_HOLD; /* make it base 0 */ |
| 209 | p_features = BTM_ReadLocalFeatures(); |
| 210 | if( !(p_features[ btm_pm_mode_off[ind] ] & btm_pm_mode_msk[ind] ) ) |
| 211 | return BTM_MODE_UNSUPPORTED; |
| 212 | } |
| 213 | |
| 214 | if(mode == p_cb->state) /* the requested mode is current mode */ |
| 215 | { |
| 216 | /* already in the requested mode and the current interval has less latency than the max */ |
| 217 | if( (mode == BTM_PM_MD_ACTIVE) || |
| 218 | ((p_mode->mode & BTM_PM_MD_FORCE) && (p_mode->max >= p_cb->interval) && (p_mode->min <= p_cb->interval)) || |
| 219 | ((p_mode->mode & BTM_PM_MD_FORCE)==0 && (p_mode->max >= p_cb->interval)) ) |
| 220 | { |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 221 | BTM_TRACE_DEBUG( "BTM_SetPowerMode: mode:0x%x interval %d max:%d, min:%d", p_mode->mode, p_cb->interval, p_mode->max, p_mode->min); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 222 | return BTM_SUCCESS; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | temp_pm_id = pm_id; |
| 227 | if(pm_id == BTM_PM_SET_ONLY_ID) |
| 228 | temp_pm_id = BTM_MAX_PM_RECORDS; |
| 229 | |
| 230 | /* update mode database */ |
| 231 | if( ((pm_id != BTM_PM_SET_ONLY_ID) && |
| 232 | (btm_cb.pm_reg_db[pm_id].mask & BTM_PM_REG_SET)) |
| 233 | || ((pm_id == BTM_PM_SET_ONLY_ID) && (btm_cb.pm_pend_link != MAX_L2CAP_LINKS)) ) |
| 234 | { |
| 235 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 236 | BTM_TRACE_DEBUG( "BTM_SetPowerMode: Saving cmd acl_ind %d temp_pm_id %d", acl_ind,temp_pm_id); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 237 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 238 | /* Make sure mask is set to BTM_PM_REG_SET */ |
| 239 | btm_cb.pm_reg_db[temp_pm_id].mask |= BTM_PM_REG_SET; |
| 240 | *(&p_cb->req_mode[temp_pm_id]) = *((tBTM_PM_PWR_MD *)p_mode); |
| 241 | p_cb->chg_ind = TRUE; |
| 242 | } |
| 243 | |
| 244 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 245 | BTM_TRACE_DEBUG( "btm_pm state:0x%x, pm_pend_link: %d", p_cb->state, btm_cb.pm_pend_link); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 246 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 247 | /* if mode == hold or pending, return */ |
| 248 | if( (p_cb->state == BTM_PM_STS_HOLD) || |
| 249 | (p_cb->state == BTM_PM_STS_PENDING) || |
| 250 | (btm_cb.pm_pend_link != MAX_L2CAP_LINKS) ) /* command pending */ |
| 251 | { |
| 252 | if(acl_ind != btm_cb.pm_pend_link) |
| 253 | { |
| 254 | /* set the stored mask */ |
| 255 | p_cb->state |= BTM_PM_STORED_MASK; |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 256 | BTM_TRACE_DEBUG( "btm_pm state stored:%d",acl_ind); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 257 | } |
| 258 | return BTM_CMD_STORED; |
| 259 | } |
| 260 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 261 | return btm_pm_snd_md_req(pm_id, acl_ind, p_mode); |
| 262 | } |
| 263 | |
| 264 | /******************************************************************************* |
| 265 | ** |
| 266 | ** Function BTM_ReadPowerMode |
| 267 | ** |
| 268 | ** Description This returns the current mode for a specific |
| 269 | ** ACL connection. |
| 270 | ** |
| 271 | ** Input Param remote_bda - device address of desired ACL connection |
| 272 | ** |
| 273 | ** Output Param p_mode - address where the current mode is copied into. |
| 274 | ** BTM_ACL_MODE_NORMAL |
| 275 | ** BTM_ACL_MODE_HOLD |
| 276 | ** BTM_ACL_MODE_SNIFF |
| 277 | ** BTM_ACL_MODE_PARK |
| 278 | ** (valid only if return code is BTM_SUCCESS) |
| 279 | ** |
| 280 | ** Returns BTM_SUCCESS if successful, |
| 281 | ** BTM_UNKNOWN_ADDR if bd addr is not active or bad |
| 282 | ** |
| 283 | *******************************************************************************/ |
| 284 | tBTM_STATUS BTM_ReadPowerMode (BD_ADDR remote_bda, tBTM_PM_MODE *p_mode) |
| 285 | { |
| 286 | int acl_ind; |
| 287 | |
| 288 | if( (acl_ind = btm_pm_find_acl_ind(remote_bda)) == MAX_L2CAP_LINKS) |
| 289 | return (BTM_UNKNOWN_ADDR); |
| 290 | |
| 291 | *p_mode = btm_cb.pm_mode_db[acl_ind].state; |
| 292 | return BTM_SUCCESS; |
| 293 | } |
| 294 | |
| 295 | /******************************************************************************* |
| 296 | ** |
| 297 | ** Function BTM_SetSsrParams |
| 298 | ** |
| 299 | ** Description This sends the given SSR parameters for the given ACL |
| 300 | ** connection if it is in ACTIVE mode. |
| 301 | ** |
| 302 | ** Input Param remote_bda - device address of desired ACL connection |
| 303 | ** max_lat - maximum latency (in 0.625ms)(0-0xFFFE) |
| 304 | ** min_rmt_to - minimum remote timeout |
| 305 | ** min_loc_to - minimum local timeout |
| 306 | ** |
| 307 | ** |
| 308 | ** Returns BTM_SUCCESS if the HCI command is issued successful, |
| 309 | ** BTM_UNKNOWN_ADDR if bd addr is not active or bad |
| 310 | ** BTM_CMD_STORED if the command is stored |
| 311 | ** |
| 312 | *******************************************************************************/ |
| 313 | tBTM_STATUS BTM_SetSsrParams (BD_ADDR remote_bda, UINT16 max_lat, |
| 314 | UINT16 min_rmt_to, UINT16 min_loc_to) |
| 315 | { |
| 316 | #if (BTM_SSR_INCLUDED == TRUE) |
| 317 | int acl_ind; |
| 318 | tBTM_PM_MCB *p_cb; |
| 319 | |
| 320 | if( (acl_ind = btm_pm_find_acl_ind(remote_bda)) == MAX_L2CAP_LINKS) |
| 321 | return (BTM_UNKNOWN_ADDR); |
| 322 | |
| 323 | if(BTM_PM_STS_ACTIVE == btm_cb.pm_mode_db[acl_ind].state || |
| 324 | BTM_PM_STS_SNIFF == btm_cb.pm_mode_db[acl_ind].state) |
| 325 | { |
| 326 | if (btsnd_hcic_sniff_sub_rate(btm_cb.acl_db[acl_ind].hci_handle, max_lat, |
| 327 | min_rmt_to, min_loc_to)) |
| 328 | return BTM_SUCCESS; |
| 329 | else |
| 330 | return BTM_NO_RESOURCES; |
| 331 | } |
| 332 | p_cb = &btm_cb.pm_mode_db[acl_ind]; |
| 333 | p_cb->max_lat = max_lat; |
| 334 | p_cb->min_rmt_to = min_rmt_to; |
| 335 | p_cb->min_loc_to = min_loc_to; |
| 336 | return BTM_CMD_STORED; |
| 337 | #else |
| 338 | return BTM_ILLEGAL_ACTION; |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 339 | #endif // BTM_SSR_INCLUDED |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | /******************************************************************************* |
| 343 | ** |
| 344 | ** Function btm_pm_reset |
| 345 | ** |
| 346 | ** Description as a part of the BTM reset process. |
| 347 | ** |
| 348 | ** Returns void |
| 349 | ** |
| 350 | *******************************************************************************/ |
| 351 | void btm_pm_reset(void) |
| 352 | { |
| 353 | int xx; |
| 354 | tBTM_PM_STATUS_CBACK *cb = NULL; |
| 355 | |
| 356 | /* clear the pending request for application */ |
| 357 | if( (btm_cb.pm_pend_id != BTM_PM_SET_ONLY_ID) && |
| 358 | (btm_cb.pm_reg_db[btm_cb.pm_pend_id].mask & BTM_PM_REG_NOTIF) ) |
| 359 | { |
| 360 | cb = btm_cb.pm_reg_db[btm_cb.pm_pend_id].cback; |
| 361 | } |
| 362 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 363 | /* clear the register record */ |
| 364 | for(xx=0; xx<BTM_MAX_PM_RECORDS; xx++) |
| 365 | { |
| 366 | btm_cb.pm_reg_db[xx].mask = BTM_PM_REC_NOT_USED; |
| 367 | } |
| 368 | |
Kim Schulz | 2a2701c | 2013-09-16 15:59:33 +0200 | [diff] [blame] | 369 | if(cb != NULL && btm_cb.pm_pend_link < MAX_L2CAP_LINKS) |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 370 | (*cb)(btm_cb.acl_db[btm_cb.pm_pend_link].remote_addr, BTM_PM_STS_ERROR, BTM_DEV_RESET, 0); |
Kim Schulz | 2a2701c | 2013-09-16 15:59:33 +0200 | [diff] [blame] | 371 | |
| 372 | /* no command pending */ |
| 373 | btm_cb.pm_pend_link = MAX_L2CAP_LINKS; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | /******************************************************************************* |
| 377 | ** |
| 378 | ** Function btm_pm_sm_alloc |
| 379 | ** |
| 380 | ** Description This function initializes the control block of an ACL link. |
| 381 | ** It is called when an ACL connection is created. |
| 382 | ** |
| 383 | ** Returns void |
| 384 | ** |
| 385 | *******************************************************************************/ |
| 386 | void btm_pm_sm_alloc(UINT8 ind) |
| 387 | { |
| 388 | tBTM_PM_MCB *p_db = &btm_cb.pm_mode_db[ind]; /* per ACL link */ |
| 389 | memset (p_db, 0, sizeof(tBTM_PM_MCB)); |
| 390 | p_db->state = BTM_PM_ST_ACTIVE; |
| 391 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 392 | BTM_TRACE_DEBUG( "btm_pm_sm_alloc ind:%d st:%d", ind, p_db->state); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 393 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | /******************************************************************************* |
| 397 | ** |
| 398 | ** Function btm_pm_find_acl_ind |
| 399 | ** |
| 400 | ** Description This function initializes the control block of an ACL link. |
| 401 | ** It is called when an ACL connection is created. |
| 402 | ** |
| 403 | ** Returns void |
| 404 | ** |
| 405 | *******************************************************************************/ |
| 406 | static int btm_pm_find_acl_ind(BD_ADDR remote_bda) |
| 407 | { |
| 408 | tACL_CONN *p = &btm_cb.acl_db[0]; |
| 409 | UINT8 xx; |
| 410 | |
| 411 | for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p++) |
| 412 | { |
Ganesh Ganapathi Batta | 7fa4fba | 2014-04-16 16:50:09 -0700 | [diff] [blame] | 413 | if ((p->in_use) && (!memcmp (p->remote_addr, remote_bda, BD_ADDR_LEN)) |
| 414 | #if (BLE_INCLUDED == TRUE) |
| 415 | && p->transport == BT_TRANSPORT_BR_EDR |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 416 | #endif // BLE_INCLUDED |
Ganesh Ganapathi Batta | 7fa4fba | 2014-04-16 16:50:09 -0700 | [diff] [blame] | 417 | ) |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 418 | { |
| 419 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 420 | BTM_TRACE_DEBUG( "btm_pm_find_acl_ind ind:%d, st:%d", xx, btm_cb.pm_mode_db[xx].state); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 421 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 422 | break; |
| 423 | } |
| 424 | } |
| 425 | return xx; |
| 426 | } |
| 427 | |
| 428 | /******************************************************************************* |
| 429 | ** |
| 430 | ** Function btm_pm_compare_modes |
| 431 | ** Description get the "more active" mode of the 2 |
| 432 | ** Returns void |
| 433 | ** |
| 434 | *******************************************************************************/ |
| 435 | static tBTM_PM_PWR_MD * btm_pm_compare_modes(tBTM_PM_PWR_MD *p_md1, tBTM_PM_PWR_MD *p_md2, tBTM_PM_PWR_MD *p_res) |
| 436 | { |
| 437 | UINT8 res; |
| 438 | |
| 439 | if(p_md1 == NULL) |
| 440 | { |
| 441 | *p_res = *p_md2; |
| 442 | p_res->mode &= ~BTM_PM_MD_FORCE; |
| 443 | |
| 444 | return p_md2; |
| 445 | } |
| 446 | |
| 447 | if(p_md2->mode == BTM_PM_MD_ACTIVE || p_md1->mode == BTM_PM_MD_ACTIVE) |
| 448 | { |
| 449 | return NULL; |
| 450 | } |
| 451 | |
| 452 | /* check if force bit is involved */ |
| 453 | if(p_md1->mode & BTM_PM_MD_FORCE) |
| 454 | { |
| 455 | *p_res = *p_md1; |
| 456 | p_res->mode &= ~BTM_PM_MD_FORCE; |
| 457 | return p_res; |
| 458 | } |
| 459 | |
| 460 | if(p_md2->mode & BTM_PM_MD_FORCE) |
| 461 | { |
| 462 | *p_res = *p_md2; |
| 463 | p_res->mode &= ~BTM_PM_MD_FORCE; |
| 464 | return p_res; |
| 465 | } |
| 466 | |
| 467 | res = (p_md1->mode - 1) * BTM_PM_NUM_SET_MODES + (p_md2->mode - 1); |
| 468 | res = btm_pm_md_comp_matrix[res]; |
| 469 | switch(res) |
| 470 | { |
| 471 | case BTM_PM_GET_MD1: |
| 472 | *p_res = *p_md1; |
| 473 | return p_md1; |
| 474 | |
| 475 | case BTM_PM_GET_MD2: |
| 476 | *p_res = *p_md2; |
| 477 | return p_md2; |
| 478 | |
| 479 | case BTM_PM_GET_COMP: |
| 480 | p_res->mode = p_md1->mode; |
| 481 | /* min of the two */ |
| 482 | p_res->max = (p_md1->max < p_md2->max)? (p_md1->max) : (p_md2->max); |
| 483 | /* max of the two */ |
| 484 | p_res->min = (p_md1->min > p_md2->min)? (p_md1->min) : (p_md2->min); |
| 485 | |
| 486 | /* the intersection is NULL */ |
| 487 | if( p_res->max < p_res->min) |
| 488 | return NULL; |
| 489 | |
| 490 | if(p_res->mode == BTM_PM_MD_SNIFF) |
| 491 | { |
| 492 | /* max of the two */ |
| 493 | p_res->attempt = (p_md1->attempt > p_md2->attempt)? (p_md1->attempt) : (p_md2->attempt); |
| 494 | p_res->timeout = (p_md1->timeout > p_md2->timeout)? (p_md1->timeout) : (p_md2->timeout); |
| 495 | } |
| 496 | return p_res; |
| 497 | } |
| 498 | return NULL; |
| 499 | } |
| 500 | |
| 501 | /******************************************************************************* |
| 502 | ** |
| 503 | ** Function btm_pm_get_set_mode |
| 504 | ** Description get the resulting mode from the registered parties, then compare it |
| 505 | ** with the requested mode, if the command is from an unregistered party. |
| 506 | ** Returns void |
| 507 | ** |
| 508 | *******************************************************************************/ |
| 509 | static tBTM_PM_MODE btm_pm_get_set_mode(UINT8 pm_id, tBTM_PM_MCB *p_cb, tBTM_PM_PWR_MD *p_mode, tBTM_PM_PWR_MD *p_res) |
| 510 | { |
| 511 | int xx, loop_max; |
| 512 | tBTM_PM_PWR_MD *p_md = NULL; |
| 513 | |
| 514 | if(p_mode != NULL && p_mode->mode & BTM_PM_MD_FORCE) |
| 515 | { |
| 516 | *p_res = *p_mode; |
| 517 | p_res->mode &= ~BTM_PM_MD_FORCE; |
| 518 | return p_res->mode; |
| 519 | } |
| 520 | |
| 521 | if(!p_mode) |
| 522 | loop_max = BTM_MAX_PM_RECORDS+1; |
| 523 | else |
| 524 | loop_max = BTM_MAX_PM_RECORDS; |
| 525 | |
| 526 | for( xx=0; xx<loop_max; xx++) |
| 527 | { |
| 528 | /* g through all the registered "set" parties */ |
| 529 | if(btm_cb.pm_reg_db[xx].mask & BTM_PM_REG_SET) |
| 530 | { |
| 531 | if(p_cb->req_mode[xx].mode == BTM_PM_MD_ACTIVE) |
| 532 | { |
| 533 | /* if at least one registered (SET) party says ACTIVE, stay active */ |
| 534 | return BTM_PM_MD_ACTIVE; |
| 535 | } |
| 536 | else |
| 537 | { |
| 538 | /* if registered parties give conflicting information, stay active */ |
| 539 | if( (btm_pm_compare_modes(p_md, &p_cb->req_mode[xx], p_res)) == NULL) |
| 540 | return BTM_PM_MD_ACTIVE; |
| 541 | p_md = p_res; |
| 542 | } |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | /* if the resulting mode is NULL(nobody registers SET), use the requested mode */ |
| 547 | if(p_md == NULL) |
| 548 | { |
| 549 | if(p_mode) |
| 550 | *p_res = *((tBTM_PM_PWR_MD *)p_mode); |
| 551 | else /* p_mode is NULL when btm_pm_snd_md_req is called from btm_pm_proc_mode_change */ |
| 552 | return BTM_PM_MD_ACTIVE; |
| 553 | } |
| 554 | else |
| 555 | { |
| 556 | /* if the command is from unregistered party, |
| 557 | compare the resulting mode from registered party*/ |
| 558 | if( (pm_id == BTM_PM_SET_ONLY_ID) && |
| 559 | ((btm_pm_compare_modes(p_mode, p_md, p_res)) == NULL) ) |
| 560 | return BTM_PM_MD_ACTIVE; |
| 561 | } |
| 562 | |
| 563 | return p_res->mode; |
| 564 | } |
| 565 | |
| 566 | /******************************************************************************* |
| 567 | ** |
| 568 | ** Function btm_pm_snd_md_req |
| 569 | ** Description get the resulting mode and send the resuest to host controller |
| 570 | ** Returns tBTM_STATUS |
| 571 | **, BOOLEAN *p_chg_ind |
| 572 | *******************************************************************************/ |
| 573 | static tBTM_STATUS btm_pm_snd_md_req(UINT8 pm_id, int link_ind, tBTM_PM_PWR_MD *p_mode) |
| 574 | { |
| 575 | tBTM_PM_PWR_MD md_res; |
| 576 | tBTM_PM_MODE mode; |
| 577 | tBTM_PM_MCB *p_cb = &btm_cb.pm_mode_db[link_ind]; |
| 578 | BOOLEAN chg_ind = FALSE; |
| 579 | |
| 580 | mode = btm_pm_get_set_mode(pm_id, p_cb, p_mode, &md_res); |
| 581 | md_res.mode = mode; |
| 582 | |
| 583 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 584 | BTM_TRACE_DEBUG( "btm_pm_snd_md_req link_ind:%d, mode: %d", |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 585 | link_ind, mode); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 586 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 587 | |
| 588 | if( p_cb->state == mode) |
| 589 | { |
| 590 | /* already in the resulting mode */ |
| 591 | if( (mode == BTM_PM_MD_ACTIVE) || |
| 592 | ((md_res.max >= p_cb->interval) && (md_res.min <= p_cb->interval)) ) |
| 593 | return BTM_CMD_STORED; |
| 594 | /* Otherwise, needs to wake, then sleep */ |
| 595 | chg_ind = TRUE; |
| 596 | } |
| 597 | p_cb->chg_ind = chg_ind; |
| 598 | |
| 599 | /* cannot go directly from current mode to resulting mode. */ |
| 600 | if( mode != BTM_PM_MD_ACTIVE && p_cb->state != BTM_PM_MD_ACTIVE) |
| 601 | p_cb->chg_ind = TRUE; /* needs to wake, then sleep */ |
| 602 | |
| 603 | if(p_cb->chg_ind == TRUE) /* needs to wake first */ |
| 604 | md_res.mode = BTM_PM_MD_ACTIVE; |
| 605 | #if (BTM_SSR_INCLUDED == TRUE) |
| 606 | else if(BTM_PM_MD_SNIFF == md_res.mode && p_cb->max_lat) |
| 607 | { |
| 608 | btsnd_hcic_sniff_sub_rate(btm_cb.acl_db[link_ind].hci_handle, p_cb->max_lat, |
| 609 | p_cb->min_rmt_to, p_cb->min_loc_to); |
| 610 | p_cb->max_lat = 0; |
| 611 | } |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 612 | #endif // BTM_SSR_INCLUDED |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 613 | /* Default is failure */ |
| 614 | btm_cb.pm_pend_link = MAX_L2CAP_LINKS; |
| 615 | |
| 616 | /* send the appropriate HCI command */ |
| 617 | btm_cb.pm_pend_id = pm_id; |
| 618 | |
| 619 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 620 | BTM_TRACE_DEBUG("btm_pm_snd_md_req state:0x%x, link_ind: %d", p_cb->state, link_ind); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 621 | #endif // BTM_PM_DEBUG |
Sharvil Nanavati | 5cf0336 | 2014-11-14 17:04:46 -0800 | [diff] [blame] | 622 | |
Marie Janssen | db55458 | 2015-06-26 14:53:46 -0700 | [diff] [blame] | 623 | LOG_DEBUG(LOG_TAG, "%s switching from %s to %s.", __func__, mode_to_string(p_cb->state), mode_to_string(md_res.mode)); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 624 | switch(md_res.mode) |
| 625 | { |
| 626 | case BTM_PM_MD_ACTIVE: |
| 627 | switch(p_cb->state) |
| 628 | { |
| 629 | case BTM_PM_MD_SNIFF: |
| 630 | if (btsnd_hcic_exit_sniff_mode(btm_cb.acl_db[link_ind].hci_handle)) |
| 631 | { |
| 632 | btm_cb.pm_pend_link = link_ind; |
| 633 | } |
| 634 | break; |
| 635 | case BTM_PM_MD_PARK: |
| 636 | if (btsnd_hcic_exit_park_mode(btm_cb.acl_db[link_ind].hci_handle)) |
| 637 | { |
| 638 | btm_cb.pm_pend_link = link_ind; |
| 639 | } |
| 640 | break; |
| 641 | default: |
| 642 | /* Failure btm_cb.pm_pend_link = MAX_L2CAP_LINKS */ |
| 643 | break; |
| 644 | } |
| 645 | break; |
| 646 | |
| 647 | case BTM_PM_MD_HOLD: |
| 648 | if (btsnd_hcic_hold_mode (btm_cb.acl_db[link_ind].hci_handle, |
| 649 | md_res.max, md_res.min)) |
| 650 | { |
| 651 | btm_cb.pm_pend_link = link_ind; |
| 652 | } |
| 653 | break; |
| 654 | |
| 655 | case BTM_PM_MD_SNIFF: |
| 656 | if (btsnd_hcic_sniff_mode (btm_cb.acl_db[link_ind].hci_handle, |
| 657 | md_res.max, md_res.min, md_res.attempt, |
| 658 | md_res.timeout)) |
| 659 | { |
| 660 | btm_cb.pm_pend_link = link_ind; |
| 661 | } |
| 662 | break; |
| 663 | |
| 664 | case BTM_PM_MD_PARK: |
| 665 | if (btsnd_hcic_park_mode (btm_cb.acl_db[link_ind].hci_handle, |
| 666 | md_res.max, md_res.min)) |
| 667 | { |
| 668 | btm_cb.pm_pend_link = link_ind; |
| 669 | } |
| 670 | break; |
| 671 | default: |
| 672 | /* Failure btm_cb.pm_pend_link = MAX_L2CAP_LINKS */ |
| 673 | break; |
| 674 | } |
| 675 | |
| 676 | if(btm_cb.pm_pend_link == MAX_L2CAP_LINKS) |
| 677 | { |
| 678 | /* the command was not sent */ |
| 679 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 680 | BTM_TRACE_DEBUG( "pm_pend_link: %d",btm_cb.pm_pend_link); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 681 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 682 | return (BTM_NO_RESOURCES); |
| 683 | } |
| 684 | |
| 685 | return BTM_CMD_STARTED; |
| 686 | } |
| 687 | |
| 688 | /******************************************************************************* |
| 689 | ** |
| 690 | ** Function btm_pm_check_stored |
| 691 | ** |
| 692 | ** Description This function is called when an HCI command status event occurs |
| 693 | ** to check if there's any PM command issued while waiting for |
| 694 | ** HCI command status. |
| 695 | ** |
| 696 | ** Returns none. |
| 697 | ** |
| 698 | *******************************************************************************/ |
| 699 | static void btm_pm_check_stored(void) |
| 700 | { |
| 701 | int xx; |
| 702 | for(xx=0; xx<MAX_L2CAP_LINKS; xx++) |
| 703 | { |
| 704 | if(btm_cb.pm_mode_db[xx].state & BTM_PM_STORED_MASK) |
| 705 | { |
| 706 | btm_cb.pm_mode_db[xx].state &= ~BTM_PM_STORED_MASK; |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 707 | BTM_TRACE_DEBUG( "btm_pm_check_stored :%d", xx); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 708 | btm_pm_snd_md_req(BTM_PM_SET_ONLY_ID, xx, NULL); |
| 709 | break; |
| 710 | } |
| 711 | } |
| 712 | } |
| 713 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 714 | /******************************************************************************* |
| 715 | ** |
| 716 | ** Function btm_pm_proc_cmd_status |
| 717 | ** |
| 718 | ** Description This function is called when an HCI command status event occurs |
| 719 | ** for power manager related commands. |
| 720 | ** |
| 721 | ** Input Parms status - status of the event (HCI_SUCCESS if no errors) |
| 722 | ** |
| 723 | ** Returns none. |
| 724 | ** |
| 725 | *******************************************************************************/ |
| 726 | void btm_pm_proc_cmd_status(UINT8 status) |
| 727 | { |
| 728 | tBTM_PM_MCB *p_cb; |
| 729 | tBTM_PM_STATUS pm_status; |
| 730 | |
| 731 | if(btm_cb.pm_pend_link >= MAX_L2CAP_LINKS) |
| 732 | return; |
| 733 | |
| 734 | p_cb = &btm_cb.pm_mode_db[btm_cb.pm_pend_link]; |
| 735 | |
| 736 | if(status == HCI_SUCCESS) |
| 737 | { |
| 738 | p_cb->state = BTM_PM_ST_PENDING; |
| 739 | pm_status = BTM_PM_STS_PENDING; |
| 740 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 741 | BTM_TRACE_DEBUG( "btm_pm_proc_cmd_status new state:0x%x", p_cb->state); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 742 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 743 | } |
| 744 | else /* the command was not successfull. Stay in the same state */ |
| 745 | { |
| 746 | pm_status = BTM_PM_STS_ERROR; |
| 747 | } |
| 748 | |
| 749 | /* notify the caller is appropriate */ |
| 750 | if( (btm_cb.pm_pend_id != BTM_PM_SET_ONLY_ID) && |
| 751 | (btm_cb.pm_reg_db[btm_cb.pm_pend_id].mask & BTM_PM_REG_NOTIF) ) |
| 752 | { |
| 753 | (*btm_cb.pm_reg_db[btm_cb.pm_pend_id].cback)(btm_cb.acl_db[btm_cb.pm_pend_link].remote_addr, pm_status, 0, status); |
| 754 | } |
| 755 | |
| 756 | /* no pending cmd now */ |
| 757 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 758 | BTM_TRACE_DEBUG( "btm_pm_proc_cmd_status state:0x%x, pm_pend_link: %d(new: %d)", |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 759 | p_cb->state, btm_cb.pm_pend_link, MAX_L2CAP_LINKS); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 760 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 761 | btm_cb.pm_pend_link = MAX_L2CAP_LINKS; |
| 762 | |
| 763 | btm_pm_check_stored(); |
| 764 | } |
| 765 | |
| 766 | /******************************************************************************* |
| 767 | ** |
| 768 | ** Function btm_process_mode_change |
| 769 | ** |
| 770 | ** Description This function is called when an HCI mode change event occurs. |
| 771 | ** |
| 772 | ** Input Parms hci_status - status of the event (HCI_SUCCESS if no errors) |
| 773 | ** hci_handle - connection handle associated with the change |
| 774 | ** mode - HCI_MODE_ACTIVE, HCI_MODE_HOLD, HCI_MODE_SNIFF, or HCI_MODE_PARK |
| 775 | ** interval - number of baseband slots (meaning depends on mode) |
| 776 | ** |
| 777 | ** Returns none. |
| 778 | ** |
| 779 | *******************************************************************************/ |
| 780 | void btm_pm_proc_mode_change (UINT8 hci_status, UINT16 hci_handle, UINT8 mode, UINT16 interval) |
| 781 | { |
| 782 | tACL_CONN *p; |
| 783 | tBTM_PM_MCB *p_cb = NULL; |
| 784 | int xx, yy, zz; |
| 785 | tBTM_PM_STATE old_state; |
| 786 | tL2C_LCB *p_lcb; |
| 787 | |
| 788 | /* get the index to acl_db */ |
| 789 | if ((xx = btm_handle_to_acl_index(hci_handle)) >= MAX_L2CAP_LINKS) |
| 790 | return; |
| 791 | |
| 792 | p = &btm_cb.acl_db[xx]; |
| 793 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 794 | /* update control block */ |
| 795 | p_cb = &(btm_cb.pm_mode_db[xx]); |
| 796 | old_state = p_cb->state; |
| 797 | p_cb->state = mode; |
| 798 | p_cb->interval = interval; |
Zach Johnson | 90fe9b0 | 2015-01-28 11:16:15 -0800 | [diff] [blame] | 799 | |
Marie Janssen | db55458 | 2015-06-26 14:53:46 -0700 | [diff] [blame] | 800 | LOG_DEBUG(LOG_TAG, "%s switched from %s to %s.", __func__, mode_to_string(old_state), mode_to_string(p_cb->state)); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 801 | |
Ganesh Ganapathi Batta | 7fa4fba | 2014-04-16 16:50:09 -0700 | [diff] [blame] | 802 | if ((p_lcb = l2cu_find_lcb_by_bd_addr(p->remote_addr, BT_TRANSPORT_BR_EDR)) != NULL) |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 803 | { |
Ganesh Ganapathi Batta | 7fa4fba | 2014-04-16 16:50:09 -0700 | [diff] [blame] | 804 | if ((p_cb->state == BTM_PM_ST_ACTIVE) || (p_cb->state == BTM_PM_ST_SNIFF)) |
| 805 | { |
| 806 | /* There might be any pending packets due to SNIFF or PENDING state */ |
| 807 | /* Trigger L2C to start transmission of the pending packets. */ |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 808 | BTM_TRACE_DEBUG("btm mode change to active; check l2c_link for outgoing packets"); |
Ganesh Ganapathi Batta | 7fa4fba | 2014-04-16 16:50:09 -0700 | [diff] [blame] | 809 | l2c_link_check_send_pkts(p_lcb, NULL, NULL); |
Ganesh Ganapathi Batta | 7fa4fba | 2014-04-16 16:50:09 -0700 | [diff] [blame] | 810 | } |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 811 | } |
| 812 | |
| 813 | /* notify registered parties */ |
| 814 | for(yy=0; yy<=BTM_MAX_PM_RECORDS; yy++) |
| 815 | { |
| 816 | /* set req_mode HOLD mode->ACTIVE */ |
| 817 | if( (mode == BTM_PM_MD_ACTIVE) && (p_cb->req_mode[yy].mode == BTM_PM_MD_HOLD) ) |
| 818 | p_cb->req_mode[yy].mode = BTM_PM_MD_ACTIVE; |
| 819 | } |
| 820 | |
| 821 | /* new request has been made. - post a message to BTU task */ |
| 822 | if(old_state & BTM_PM_STORED_MASK) |
| 823 | { |
| 824 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 825 | BTM_TRACE_DEBUG( "btm_pm_proc_mode_change: Sending stored req:%d", xx); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 826 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 827 | btm_pm_snd_md_req(BTM_PM_SET_ONLY_ID, xx, NULL); |
| 828 | } |
| 829 | else |
| 830 | { |
| 831 | for(zz=0; zz<MAX_L2CAP_LINKS; zz++) |
| 832 | { |
| 833 | if(btm_cb.pm_mode_db[zz].chg_ind == TRUE) |
| 834 | { |
| 835 | #if BTM_PM_DEBUG == TRUE |
Sharvil Nanavati | 5344d6d | 2014-05-04 00:46:57 -0700 | [diff] [blame] | 836 | BTM_TRACE_DEBUG( "btm_pm_proc_mode_change: Sending PM req :%d", zz); |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 837 | #endif // BTM_PM_DEBUG |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 838 | btm_pm_snd_md_req(BTM_PM_SET_ONLY_ID, zz, NULL); |
| 839 | break; |
| 840 | } |
| 841 | } |
| 842 | } |
| 843 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 844 | /* notify registered parties */ |
| 845 | for(yy=0; yy<BTM_MAX_PM_RECORDS; yy++) |
| 846 | { |
| 847 | if(btm_cb.pm_reg_db[yy].mask & BTM_PM_REG_NOTIF) |
| 848 | { |
| 849 | (*btm_cb.pm_reg_db[yy].cback)( p->remote_addr, mode, interval, hci_status); |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | /* If mode change was because of an active role switch or change link key */ |
Zach Johnson | e7faae6 | 2014-10-27 17:23:49 -0700 | [diff] [blame] | 854 | btm_cont_rswitch(p, btm_find_dev(p->remote_addr), hci_status); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 855 | } |
| 856 | |
| 857 | /******************************************************************************* |
| 858 | ** |
| 859 | ** Function btm_pm_proc_ssr_evt |
| 860 | ** |
| 861 | ** Description This function is called when an HCI sniff subrating event occurs. |
| 862 | ** |
| 863 | ** Returns none. |
| 864 | ** |
| 865 | *******************************************************************************/ |
| 866 | #if (BTM_SSR_INCLUDED == TRUE) |
| 867 | void btm_pm_proc_ssr_evt (UINT8 *p, UINT16 evt_len) |
| 868 | { |
| 869 | UINT8 status; |
| 870 | UINT16 handle; |
Sharvil Nanavati | f1c764f | 2015-02-23 17:31:48 -0800 | [diff] [blame] | 871 | UINT16 max_rx_lat; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 872 | int xx, yy; |
| 873 | tBTM_PM_MCB *p_cb; |
| 874 | tACL_CONN *p_acl=NULL; |
| 875 | UINT16 use_ssr = TRUE; |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 876 | UNUSED(evt_len); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 877 | |
| 878 | STREAM_TO_UINT8 (status, p); |
| 879 | |
| 880 | STREAM_TO_UINT16 (handle, p); |
| 881 | /* get the index to acl_db */ |
| 882 | if ((xx = btm_handle_to_acl_index(handle)) >= MAX_L2CAP_LINKS) |
| 883 | return; |
| 884 | |
Sharvil Nanavati | f1c764f | 2015-02-23 17:31:48 -0800 | [diff] [blame] | 885 | p += 2; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 886 | STREAM_TO_UINT16 (max_rx_lat, p); |
| 887 | p_cb = &(btm_cb.pm_mode_db[xx]); |
| 888 | |
| 889 | p_acl = &btm_cb.acl_db[xx]; |
| 890 | if(p_cb->interval == max_rx_lat) |
| 891 | { |
| 892 | /* using legacy sniff */ |
| 893 | use_ssr = FALSE; |
| 894 | } |
| 895 | |
| 896 | /* notify registered parties */ |
| 897 | for(yy=0; yy<BTM_MAX_PM_RECORDS; yy++) |
| 898 | { |
| 899 | if(btm_cb.pm_reg_db[yy].mask & BTM_PM_REG_NOTIF) |
| 900 | { |
| 901 | if( p_acl) |
| 902 | { |
| 903 | (*btm_cb.pm_reg_db[yy].cback)( p_acl->remote_addr, BTM_PM_STS_SSR, use_ssr, status); |
| 904 | } |
| 905 | } |
| 906 | } |
| 907 | } |
Chris Manton | e7ef465 | 2014-10-15 16:31:49 -0700 | [diff] [blame] | 908 | #endif // BTM_SSR_INCLUDED |
Ganesh Ganapathi Batta | 7fa4fba | 2014-04-16 16:50:09 -0700 | [diff] [blame] | 909 | |
Satya Calloji | e5ba884 | 2014-07-03 17:18:02 -0700 | [diff] [blame] | 910 | /******************************************************************************* |
| 911 | ** |
| 912 | ** Function btm_pm_device_in_active_or_sniff_mode |
| 913 | ** |
| 914 | ** Description This function is called to check if in active or sniff mode |
| 915 | ** |
| 916 | ** Returns TRUE, if in active or sniff mode |
| 917 | ** |
| 918 | *******************************************************************************/ |
| 919 | BOOLEAN btm_pm_device_in_active_or_sniff_mode(void) |
| 920 | { |
| 921 | /* The active state is the highest state-includes connected device and sniff mode*/ |
| 922 | |
| 923 | /* Covers active and sniff modes */ |
Andre Eisenbach | f4c4b78 | 2015-03-19 15:15:05 -0700 | [diff] [blame] | 924 | if (BTM_GetNumAclLinks() > 0) |
Satya Calloji | e5ba884 | 2014-07-03 17:18:02 -0700 | [diff] [blame] | 925 | { |
Andre Eisenbach | f4c4b78 | 2015-03-19 15:15:05 -0700 | [diff] [blame] | 926 | BTM_TRACE_DEBUG("%s - ACL links: %d", __func__, BTM_GetNumAclLinks()); |
Satya Calloji | e5ba884 | 2014-07-03 17:18:02 -0700 | [diff] [blame] | 927 | return TRUE; |
| 928 | } |
| 929 | |
Prerepa Viswanadham | 81b0319 | 2014-07-23 17:49:48 -0700 | [diff] [blame] | 930 | #if ((defined BLE_INCLUDED) && (BLE_INCLUDED == TRUE)) |
Satya Calloji | e5ba884 | 2014-07-03 17:18:02 -0700 | [diff] [blame] | 931 | /* Check BLE states */ |
| 932 | if (btm_ble_get_conn_st() != BLE_CONN_IDLE) |
| 933 | { |
Andre Eisenbach | f4c4b78 | 2015-03-19 15:15:05 -0700 | [diff] [blame] | 934 | BTM_TRACE_DEBUG("%s - BLE state: %x", __func__, btm_ble_get_conn_st()); |
Satya Calloji | e5ba884 | 2014-07-03 17:18:02 -0700 | [diff] [blame] | 935 | return TRUE; |
| 936 | } |
Prerepa Viswanadham | 81b0319 | 2014-07-23 17:49:48 -0700 | [diff] [blame] | 937 | #endif |
Satya Calloji | e5ba884 | 2014-07-03 17:18:02 -0700 | [diff] [blame] | 938 | |
| 939 | return FALSE; |
| 940 | } |
| 941 | |
| 942 | /******************************************************************************* |
| 943 | ** |
| 944 | ** Function btm_pm_device_in_scan_state |
| 945 | ** |
| 946 | ** Description This function is called to check if in paging, inquiry or connecting mode |
| 947 | ** |
| 948 | ** Returns TRUE, if in paging, inquiry or connecting mode |
| 949 | ** |
| 950 | *******************************************************************************/ |
| 951 | BOOLEAN btm_pm_device_in_scan_state(void) |
| 952 | { |
| 953 | /* Scan state-paging, inquiry, and trying to connect */ |
| 954 | |
| 955 | /* Check for paging */ |
Pavlin Radoslavov | 1a3844f | 2015-09-25 11:21:15 -0700 | [diff] [blame^] | 956 | if (btm_cb.is_paging || (!fixed_queue_is_empty(btm_cb.page_queue)) || |
Satya Calloji | e5ba884 | 2014-07-03 17:18:02 -0700 | [diff] [blame] | 957 | BTM_BL_PAGING_STARTED == btm_cb.busy_level) |
| 958 | { |
| 959 | BTM_TRACE_DEBUG("btm_pm_device_in_scan_state- paging"); |
| 960 | return TRUE; |
| 961 | } |
| 962 | |
| 963 | /* Check for inquiry */ |
| 964 | if ((btm_cb.btm_inq_vars.inq_active & (BTM_BR_INQ_ACTIVE_MASK | BTM_BLE_INQ_ACTIVE_MASK)) != 0) |
| 965 | { |
| 966 | BTM_TRACE_DEBUG("btm_pm_device_in_scan_state- Inq active"); |
| 967 | return TRUE; |
| 968 | } |
| 969 | |
| 970 | return FALSE; |
| 971 | } |
| 972 | |
| 973 | /******************************************************************************* |
| 974 | ** |
| 975 | ** Function BTM_PM_ReadControllerState |
| 976 | ** |
| 977 | ** Description This function is called to obtain the controller state |
| 978 | ** |
| 979 | ** Returns Controller State-BTM_CONTRL_ACTIVE, BTM_CONTRL_SCAN, and BTM_CONTRL_IDLE |
| 980 | ** |
| 981 | *******************************************************************************/ |
| 982 | tBTM_CONTRL_STATE BTM_PM_ReadControllerState(void) |
| 983 | { |
| 984 | if (TRUE == btm_pm_device_in_active_or_sniff_mode()) |
| 985 | return BTM_CONTRL_ACTIVE; |
| 986 | else |
| 987 | if (TRUE == btm_pm_device_in_scan_state()) |
| 988 | return BTM_CONTRL_SCAN; |
| 989 | else |
| 990 | return BTM_CONTRL_IDLE; |
| 991 | } |
Sharvil Nanavati | 5cf0336 | 2014-11-14 17:04:46 -0800 | [diff] [blame] | 992 | |
| 993 | static const char *mode_to_string(tBTM_PM_MODE mode) { |
| 994 | switch (mode) { |
| 995 | case BTM_PM_MD_ACTIVE: return "ACTIVE"; |
| 996 | case BTM_PM_MD_SNIFF: return "SNIFF"; |
| 997 | case BTM_PM_MD_PARK: return "PARK"; |
| 998 | case BTM_PM_MD_HOLD: return "HOLD"; |
| 999 | default: return "UNKNOWN"; |
| 1000 | } |
| 1001 | } |