FreeCalypso > hg > fc-tourmaline
view src/cs/services/audio/audio_env.c @ 220:0ed36de51973
ABB semaphore protection overhaul
The ABB semaphone protection logic that came with TCS211 from TI
was broken in several ways:
* Some semaphore-protected functions were called from Application_Initialize()
context. NU_Obtain_Semaphore() called with NU_SUSPEND fails with
NU_INVALID_SUSPEND in this context, but the return value wasn't checked,
and NU_Release_Semaphore() would be called unconditionally at the end.
The latter call would increment the semaphore count past 1, making the
semaphore no longer binary and thus no longer effective for resource
protection. The fix is to check the return value from NU_Obtain_Semaphore()
and skip the NU_Release_Semaphore() call if the semaphore wasn't properly
obtained.
* Some SPI hardware manipulation was being done before entering the semaphore-
protected critical section. The fix is to reorder the code: first obtain
the semaphore, then do everything else.
* In the corner case of L1/DSP recovery, l1_abb_power_on() would call some
non-semaphore-protected ABB & SPI init functions. The fix is to skip those
calls in the case of recovery.
* A few additional corner cases existed, all of which are fixed by making
ABB semaphore protection 100% consistent for all ABB functions and code paths.
There is still one remaining problem of priority inversion: suppose a low-
priority task calls an ABB function, and some medium-priority task just happens
to preempt right in the middle of that semaphore-protected ABB operation. Then
the high-priority SPI task is locked out for a non-deterministic time until
that medium-priority task finishes its work and goes back to sleep. This
priority inversion problem remains outstanding for now.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 26 Apr 2021 20:55:25 +0000 |
| parents | 4e78acac3d88 |
| children |
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/****************************************************************************/ /* */ /* File Name: audio_env.c */ /* */ /* Purpose: This file contains routines that will be called in order to: */ /* - notify the Bluetooth Environment of the AUDIO's */ /* Memory Banks requirements, */ /* - set AUDIO's task and memory banks IDs */ /* - initialize all the AUDIO's data structures, */ /* - start the AUDIO's task */ /* - stop the AUDIO's task */ /* - kill the AUDIO's task */ /* */ /* Version 0.1 */ /* */ /* Date Modification */ /* ------------------------------------ */ /* 18 May 2001 Create */ /* */ /* Author Francois Mazard - Stephanie Gerthoux */ /* */ /* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved*/ /****************************************************************************/ #include "rv/rv_defined_swe.h" #ifdef RVM_AUDIO_MAIN_SWE #ifndef _WINDOWS #include "config/swconfig.cfg" #include "config/sys.cfg" #include "config/chipset.cfg" #endif #include "l1_confg.h" #include "rvm/rvm_use_id_list.h" #include "rv/rv_general.h" #include "rvm/rvm_gen.h" #include "rvm/rvm_priorities.h" #include "audio/audio_ffs_i.h" #include "audio/audio_api.h" #include "audio/audio_structs_i.h" #include "audio/audio_env_i.h" #include "rvf/rvf_target.h" #include "audio/audio_const_i.h" #include "audio/audio_macro_i.h" #include "audio/audio_var_i.h" #include <string.h> extern T_RV_RET audio_core(void); /* Initialisation of the pointer to the Global Environment Control block */ T_AUDIO_ENV_CTRL_BLK *p_audio_gbl_var = NULL; /********************************************************************************/ /* Function : audio_get_info */ /* */ /* Description : This function is called by the Bt Environment to learn */ /* audio requirements in terms of memory, SWEs... */ /* */ /* Parameters : T_RVM_INFO_SWE * swe_info: pointer to the structure to fill */ /* containing infos related to the Audio SWE. */ /* */ /* Return : T_BTE_RETURN */ /* */ /* History : 0.1 (11-May-2001) */ /* */ /* */ /********************************************************************************/ T_RVM_RETURN audio_get_info(T_RVM_INFO_SWE *infoSWEnt) { /* SWE info */ infoSWEnt->swe_type = RVM_SWE_TYPE_4; infoSWEnt->type_info.type4.swe_use_id = AUDIO_USE_ID; memcpy( infoSWEnt->type_info.type4.swe_name, "AUDIO", sizeof("AUDIO") ); infoSWEnt->type_info.type4.stack_size = AUDIO_STACK_SIZE; infoSWEnt->type_info.type4.priority = RVM_AUDIO_TASK_PRIORITY; /* Set the return path */ infoSWEnt->type_info.type4.return_path.callback_func = NULL; infoSWEnt->type_info.type4.return_path.addr_id = 0; /* memory bank info */ #if (MELODY_E1) || (MELODY_E2) || (VOICE_MEMO) || (SPEECH_RECO) infoSWEnt->type_info.type4.nb_mem_bank = 0x03; #else infoSWEnt->type_info.type4.nb_mem_bank = 0x02; #endif /* Memory bank used to receive/send the message to/from the entity */ memcpy ((UINT8 *) ((infoSWEnt->type_info.type4.mem_bank[0]).bank_name), "AUDIO_EXTERN",sizeof("AUDIO_EXTERN")); ((infoSWEnt->type_info.type4.mem_bank[0]).initial_params).size = AUDIO_MB_EXTERNAL_SIZE; /* Set a watermark to ensure that biggest status message (Speech Reco) can always be sent */ ((infoSWEnt->type_info.type4.mem_bank[0]).initial_params).watermark = AUDIO_MB_EXTERNAL_WATERMARK - sizeof(T_AUDIO_SR_RECO_STATUS); /* Memory bank used to send/receive the message to/from the L1 */ memcpy ((UINT8 *) ((infoSWEnt->type_info.type4.mem_bank[1]).bank_name), "AUDIO_INTERN",sizeof("AUDIO_INTERN")); ((infoSWEnt->type_info.type4.mem_bank[1]).initial_params).size = AUDIO_MB_INTERNAL_SIZE; ((infoSWEnt->type_info.type4.mem_bank[1]).initial_params).watermark = AUDIO_MB_INTERNAL_WATERMARK; #if (MELODY_E1) || (MELODY_E2) || (VOICE_MEMO) || (SPEECH_RECO) /* Memory bank used to download data to/from the flash */ memcpy ((UINT8 *) ((infoSWEnt->type_info.type4.mem_bank[2]).bank_name), "AUDIO_FFS",sizeof("AUDIO_FFS")); ((infoSWEnt->type_info.type4.mem_bank[2]).initial_params).size = AUDIO_MB_FFS_SIZE; ((infoSWEnt->type_info.type4.mem_bank[2]).initial_params).watermark = AUDIO_MB_FFS_WATERMARK; #endif /* linked SWE info */ #ifdef _WINDOWS /* this SWE requires no SWE to run in PC environement*/ infoSWEnt->type_info.type4.nb_linked_swe = 0x00; #else #if (MELODY_E1) || (MELODY_E2) || (VOICE_MEMO) || (SPEECH_RECO) /* this SWE requires the FFS SWE to run */ infoSWEnt->type_info.type4.nb_linked_swe = 0x01; infoSWEnt->type_info.type4.linked_swe_id[0]= FFS_USE_ID; #else infoSWEnt->type_info.type4.nb_linked_swe = 0x00; #endif #if (L1_GTT == 1) infoSWEnt->type_info.type4.linked_swe_id[infoSWEnt->type_info.type4.nb_linked_swe] = TTY_USE_ID; (infoSWEnt->type_info.type4.nb_linked_swe)++; #endif #endif /* generic functions */ infoSWEnt->type_info.type4.set_info = audio_set_info; infoSWEnt->type_info.type4.init = audio_init; infoSWEnt->type_info.type4.core = audio_core; infoSWEnt->type_info.type4.stop = audio_stop; infoSWEnt->type_info.type4.kill = audio_kill; return (RV_OK); } /**************** End of audio_get_info function ******************************/ /********************************************************************************/ /* Function : audio_set_info */ /* */ /* Description : This function is called by the RV Environment to inform */ /* the audio SWE about task_id, mb_id and error function. */ /* */ /* Parameters : - T_RVM_TASK_ID taskId[]: array of task_id. */ /* - task_id[0] contains audio task_id. */ /* - T_RVF_MB_ID mb_id[]: array of memory bank ids. */ /* - callback function to call in case of unrecoverable error. */ /* */ /* Return : T_RVM_RETURN */ /* */ /* History : 0.1 (11-May-2001 ) */ /* */ /* */ /********************************************************************************/ T_RVM_RETURN audio_set_info(T_RVF_ADDR_ID addrId, T_RV_RETURN return_path[], T_RVF_MB_ID mbId[], T_RVM_RETURN (*callBackFct) ( T_RVM_NAME SWEntName, T_RVM_RETURN errorCause, T_RVM_ERROR_TYPE errorType, T_RVM_STRING errorMsg) ) { /* Declare local variable.*/ T_RVF_MB_STATUS mb_status = RVF_GREEN; #if (VOICE_MEMO) || (MELODY_E1) UINT8 i; #endif /* Allocate memory required to store the Global Environment control Block. */ mb_status = rvf_get_buf(mbId[1], sizeof(T_AUDIO_ENV_CTRL_BLK), (T_RVF_BUFFER **) & p_audio_gbl_var); /* If insufficient resources to properly run the AUDIO's task, then abort. */ switch (mb_status) { case RVF_GREEN: { /* Initialize the Global Environment Control Block */ memset((UINT8 *) p_audio_gbl_var, 0x00, sizeof (T_AUDIO_ENV_CTRL_BLK)); /* Store the memory bank IDs assigned to the AUDIO */ p_audio_gbl_var->mb_external = mbId[0]; p_audio_gbl_var->mb_internal = mbId[1]; p_audio_gbl_var->mb_audio_ffs = mbId[2]; /* Store the address ID assigned to the AUDIO */ p_audio_gbl_var->addrId = addrId; /* Store the address ID of the audio FFS task */ p_audio_gbl_var->audio_ffs_addrId = addrId; /* Store the function to be called whenever any unrecoverable */ /* error occurs. */ p_audio_gbl_var->callBackFct = callBackFct; AUDIO_SEND_TRACE(" AUDIO (env). AUDIO's information set ", RV_TRACE_LEVEL_DEBUG_LOW); break; } case RVF_YELLOW: { rvf_free_buf((T_RVF_BUFFER *) p_audio_gbl_var); AUDIO_TRACE_WARNING(" AUDIO memory warning (orange memory)"); return (RV_MEMORY_ERR); } default: { AUDIO_TRACE_WARNING(" AUDIO memory warning (red memory)"); return (RV_MEMORY_ERR); } } /* switch (mb_status) */ /* Initialization of the audio keybeep state */ #if (KEYBEEP) p_audio_gbl_var->keybeep.state = AUDIO_KEYBEEP_IDLE; #endif /* Initialization of the audio tones state */ #if (TONE) p_audio_gbl_var->tones.state = AUDIO_TONES_IDLE; #endif /* Initialization of the audio melody E1 state */ #if (MELODY_E1) p_audio_gbl_var->melody_E1_0.state = AUDIO_MELODY_E1_IDLE; p_audio_gbl_var->melody_E1_1.state = AUDIO_MELODY_E1_IDLE; #endif /* Initialization of the audio melody E2 state */ #if (MELODY_E2) p_audio_gbl_var->melody_E2_0.state = AUDIO_MELODY_E2_IDLE; p_audio_gbl_var->melody_E2_1.state = AUDIO_MELODY_E2_IDLE; /* Initalize the flag to valie the .lsi file */ p_audio_gbl_var->melody_E2_load_file_instruments.file_downloaded = FALSE; #endif /* Initialization of the audio voice memorization state */ #if (VOICE_MEMO) p_audio_gbl_var->vm_play.state = AUDIO_VM_PLAY_IDLE; p_audio_gbl_var->vm_record.state = AUDIO_VM_RECORD_IDLE; #endif #if (L1_MIDI==1) p_audio_gbl_var->midi.state = AUDIO_IDLE; #endif #if (L1_AUDIO_DRIVER) for (i = 0; i < AUDIO_DRIVER_MAX_CHANNEL; i++) { p_audio_gbl_var->audio_driver_session[i].session_info.state = AUDIO_DRIVER_CHANNEL_WAIT_INIT; p_audio_gbl_var->audio_driver_session[i].session_req.nb_buffer = 0; } #endif #if (AUDIO_MEM_MANAGER) p_audio_gbl_var->audio_vm_amr_record.state = AUDIO_IDLE; p_audio_gbl_var->audio_vm_amr_play.state = AUDIO_IDLE; for (i = 0; i < AUDIO_MEM_MAX_CHANNEL; i++) { p_audio_gbl_var->audio_mem_session[i].session_info.state = AUDIO_MEM_IDLE; } #endif #if (VOICE_MEMO) || (MELODY_E1) || (MELODY_E2) for (i=0; i< AUDIO_FFS_MAX_CHANNEL; i++) { p_audio_gbl_var->audio_ffs_session[i].session_req.valid_channel; } #endif /* Initialization of the audio speech reco state machine */ #if (SPEECH_RECO) p_audio_gbl_var->speech_reco.sr_enroll.state = AUDIO_SR_ENROLL_IDLE; p_audio_gbl_var->speech_reco.sr_update.state = AUDIO_SR_UPDATE_IDLE; p_audio_gbl_var->speech_reco.sr_reco.state = AUDIO_SR_RECO_IDLE; #endif /* intialize the sate machine of audio mode managers */ p_audio_gbl_var->audio_mode_var.full_access_write_var.state = AUDIO_MODE_FULL_WRITE_IDLE; p_audio_gbl_var->audio_mode_var.audio_mode_load_var.state = AUDIO_MODE_LOAD_IDLE; /* initialize the name ofthe current volume file */ p_audio_gbl_var->audio_mode_var.audio_volume_var.audio_volume_path_name[0] = 0; return (RV_OK); } /*************** End of audio_set_info function ********************************/ /********************************************************************************/ /* Function : audio_init */ /* */ /* Description : This function is called by the BT Environment to initialize the*/ /* audio SWE before creating the task and calling audio_start. */ /* */ /* Parameters : None */ /* */ /* Return : T_BTE_RETURN */ /* */ /* History : 0.1 (20-August-2000) */ /* */ /* */ /********************************************************************************/ T_RVM_RETURN audio_init(void) { /* Put global audio initialization */ return RV_OK; } /*************************************************************************************/ /* Function : audio_stop */ /* */ /* Description : This function is called by the BT Environment to stop the audio SWE.*/ /* */ /* Parameters : None */ /* */ /* Return : T_BTE_RETURN */ /* */ /* History : 0.1 (11-May-2001) */ /* */ /* */ /*************************************************************************************/ T_RVM_RETURN audio_stop(void) { /* other SWEs have not been killed yet, audio can send messages to other SWEs */ return RV_OK; } /*************************************************************************************/ /* Function : audio_kill */ /* */ /* Description : This function is called by the BT Environment to kill the audio */ /* SWE, after the audio_stop function has been called. */ /* */ /* Parameters : None */ /* */ /* Return : T_BTE_RETURN */ /* */ /* History : 0.1 (11-May-2001) */ /* */ /* */ /*************************************************************************************/ T_RVM_RETURN audio_kill (void) { /* free all memory buffer previously allocated */ rvf_free_buf ((T_RVF_BUFFER *) p_audio_gbl_var); return RV_OK; } #endif /* #ifdef RVM_AUDIO_MAIN_SWE */