FreeCalypso > hg > fc-tourmaline
view src/g23m-aci/aci/psa_psis.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 | fa8dc04885d8 |
children |
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/* +----------------------------------------------------------------------------- | Project : GSM-PS (6147) | Modul : PSA_PSIS +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This module defines the processing functions for the | primitives sent to the protocol stack adapter by the DTI | interface. +----------------------------------------------------------------------------- */ #ifdef FF_PSI #define PSA_PSIS_C #include "aci_all.h" /*==== INCLUDES ===================================================*/ #include "aci_cmh.h" #include "ati_cmd.h" #include "aci_cmd.h" #include "dti.h" /* functionality of the dti library */ #include "aci.h" #include "aci_lst.h" #include "dti_conn_mng.h" #include "dti_cntrl_mng.h" #include "psa_psi.h" #include "cmh_psi.h" #include "aci_mem.h" #include "aci_io.h" #include "sap_dti.h" /*==== CONSTANTS ==================================================*/ /*==== TYPES ======================================================*/ /*==== EXPORT =====================================================*/ /*==== VARIABLES ==================================================*/ /*==== FUNCTIONS ==================================================*/ LOCAL USHORT psi_get_desc_size (T_desc2 *data) { USHORT size = 0; T_desc2 *next_data; next_data = data; while (next_data NEQ NULL) { size += next_data->len; next_data = (T_desc2*)next_data->next; } return (size); } #ifdef DTI /* +-------------------------------------------------------------------+ | PROJECT : GPRS (8441) MODULE : PSA_PSIS | | STATE : finished ROUTINE : psaPSI_ConnectRej | +-------------------------------------------------------------------+ PURPOSE : Indicates that ACI can not handle a DTI connection with PSI */ GLOBAL void psaPSI_ConnRej ( U32 devId) { TRACE_FUNCTION ("psaPSI_ConnRej()"); { PALLOC ( psi_conn_rej, PSI_CONN_REJ); psi_conn_rej->devId = devId; PSENDX (PSI, psi_conn_rej); } } /* +-------------------------------------------------------------------+ | PROJECT : GPRS (8441) MODULE : PSA_PSIS | | STATE : finished ROUTINE : psaPSI_ConnectRes | +-------------------------------------------------------------------+ PURPOSE : Response to PSI_CONN_IND sent by PSI with confirmed DIO capabilities */ GLOBAL void psaPSI_ConnRes ( U32 devId) { TRACE_FUNCTION ("psaPSI_ConnRes()"); { PALLOC ( psi_conn_res, PSI_CONN_RES); psi_conn_res->devId = devId; PSENDX (PSI, psi_conn_res); } } /* +-------------------------------------------------------------------+ | PROJECT : GPRS (8441) MODULE : PSA_PSIS | | STATE : finished ROUTINE : psaPSI_CloseReq | +-------------------------------------------------------------------+ PURPOSE : Request closing of DTI connection with PSI */ GLOBAL void psaPSI_CloseReq ( U32 devId) { TRACE_FUNCTION ("psaPSI_DTICloseReq()"); { PALLOC ( psi_close_req, PSI_CLOSE_REQ); psi_close_req->devId = devId; PSENDX (PSI, psi_close_req); } } /* +-------------------------------------------------------------------+ | PROJECT : GPRS (8441) MODULE : PSA_PSIS | | STATE : finished ROUTINE : psaPSI_DTICloseReq | +-------------------------------------------------------------------+ PURPOSE : Request closing of DTI connection with PSI */ GLOBAL void psaPSI_DTICloseReq ( U32 devId, U32 link_id) { TRACE_FUNCTION ("psaPSI_DTICloseReq()"); { PALLOC ( psi_dti_close_req, PSI_DTI_CLOSE_REQ); psi_dti_close_req->devId = devId; psi_dti_close_req->link_id = link_id; PSENDX (PSI, psi_dti_close_req); } } /* +-------------------------------------------------------------------+ | PROJECT : GPRS (8441) MODULE : PSA_PKTIOS | | STATE : finished ROUTINE : psaPSI_DTIOpenReq | +-------------------------------------------------------------------+ PURPOSE : Request opening of DTI connection with PSI */ GLOBAL void psaPSI_DTIOpenReq ( U32 devId, char* peer_name, ULONG link_id, UBYTE dti_direction) { TRACE_FUNCTION ("psaPSI_DTIOpenReq()"); /* if (dti_cntrl_set_conn_parms(link_id, DTI_ENTITY_PSI, (UBYTE)(devId&DIO_DEVICE_MASK), UART_DLCI_NOT_MULTIPLEXED) EQ FALSE) { return; }*/ { PALLOC ( psi_dti_open_req, PSI_DTI_OPEN_REQ); psi_dti_open_req->devId = devId; memcpy( &(psi_dti_open_req->peer.name), peer_name, strlen(peer_name) + 1 ); psi_dti_open_req->link_id = link_id; psi_dti_open_req->dti_direction = dti_direction; PSENDX (PSI, psi_dti_open_req); } } /* +-------------------------------------------------------------------+ | PROJECT : GPRS (8441) MODULE : PSA_PSIS | | STATE : finished ROUTINE : psaPSI_Dti_Req | +-------------------------------------------------------------------+ PURPOSE : Request for DTI connection by DTI managment */ GLOBAL void psaPSI_Dti_Req ( ULONG link_id, UBYTE peer, T_DTI_MNG_PSI_MODE con_mode) { UBYTE device_no; U32 devId; char* peer_name; T_DTI_CNTRL device_info; U32 cpblty = DTI_CPBLTY_NO; TRACE_FUNCTION ("psaPSI_Dti_Req()"); dti_cntrl_get_info_from_dti_id(EXTRACT_DTI_ID(link_id), &device_info); device_no = device_info.dev_no; switch (device_info.capability-DTI_CPBLTY_CMD ) { case DTI_CPBLTY_CMD: cpblty = DTI_CPBLTY_CMD; break; case DTI_CPBLTY_SER: if (device_info.sub_no EQ 0) { cpblty = DIO_DATA_SER; } else { cpblty = DIO_DATA_SER_MUX; } break; case DTI_CPBLTY_PKT: cpblty = DIO_DATA_PKT; break; default: break; } /*the mapping of capability between DTI and PSI should be done here, since devId relates to the device type */ devId = ((device_info.driver_id & 0xff)<<24| cpblty| (device_info.dio_ctrl_id & 0xff)<<8| device_no); peer_name = dti_entity_name[peer].name; if(con_mode EQ PSI_CONNECT_DTI) { dti_cntrl_set_conn_parms((T_DTI_CONN_LINK_ID)link_id, DTI_ENTITY_PSI, device_info.dev_no, UART_DLCI_NOT_MULTIPLEXED); psaPSI_DTIOpenReq (devId, peer_name, link_id, DTI_CHANNEL_TO_HIGHER_LAYER); } else { psaPSI_DTICloseReq(devId, link_id); } } #endif /* DTI */ /* +-------------------------------------------------------------------+ | PROJECT : GSM-PS (6147) MODULE : PSA_PSIS | | ROUTINE : psa_psi_DTI_data_req | +-------------------------------------------------------------------+ PURPOSE : */ GLOBAL void psa_psi_DTI_data_req ( T_desc2 *data, T_ACI_DTI_PRC_PSI *src_infos, T_DTI_ENTITY_ID peer_id ) { USHORT data_len = 0; TRACE_FUNCTION("psa_psi_DTI_data_req()"); { PALLOC_DESC2(dti_data_ind, DTI2_DATA_IND); data_len = psi_get_desc_size (data); dti_data_ind->desc_list2.list_len = data_len; dti_data_ind->desc_list2.first = (ULONG)data; dti_data_ind->parameters.p_id = 0; /*dummy_ubyte; */ if (BITFIELD_CHECK (src_infos->data_cntr, PSI_DTI_FLOW_OFF)) { dti_data_ind->parameters.st_lines.st_flow = DTI_FLOW_OFF; } else { dti_data_ind->parameters.st_lines.st_flow = DTI_FLOW_ON; } if (BITFIELD_CHECK (src_infos->data_cntr, PSI_DTI_SB_BIT)) { TRACE_EVENT("SB is ON"); dti_data_ind->parameters.st_lines.st_line_sb = DTI_SB_ON; } else { TRACE_EVENT("SB is OFF"); dti_data_ind->parameters.st_lines.st_line_sb = DTI_SB_OFF; } dti_data_ind->parameters.st_lines.st_line_sa = DTI_SA_ON; dti_data_ind->parameters.st_lines.st_break_len = DTI_BREAK_OFF; dti_send_data ( aci_hDTI, src_infos->srcId, (UBYTE)peer_id, ACI_DTI_DN_CHANNEL, dti_data_ind ); } } /* +-------------------------------------------------------------------+ | PROJECT : GSM-PS (6147) MODULE : PSA_PSI | | ROUTINE : psa_psi_DTI_getdata | +-------------------------------------------------------------------+ PURPOSE : */ GLOBAL void psa_psi_DTI_getdata( UBYTE src_id, T_DTI_ENTITY_ID peer_id) { T_ACI_DTI_PRC_PSI *src_infos = NULL; TRACE_FUNCTION("psaDTI_getdata"); src_infos = find_element (psi_src_params, src_id, cmhPSItest_srcId); if (src_infos EQ NULL) { TRACE_EVENT_P1("[ERR] psaDTI_getdata: link_id=%d not found", src_id) ; return ; } if( src_infos->RecState NEQ RECEIVING) { src_infos->RecState = READY_REC; } { dti_start ( aci_hDTI, src_id, (UBYTE)peer_id, ACI_DTI_DN_CHANNEL ); } } #ifdef DTI /* +-------------------------------------------------------------------+ | PROJECT : GSM-PS (6147) MODULE : PSA_PSI | | ROUTINE : psaPSI_DCDreq | +-------------------------------------------------------------------+ PURPOSE : */ GLOBAL void psaPSI_DCDreq( UBYTE c_Id, UBYTE line_state ) { T_ACI_DTI_PRC_PSI *cmd = NULL; TRACE_FUNCTION("psaPSI_DCDreq()"); cmd = find_element (psi_src_params, c_Id, cmhPSItest_srcId); if (cmd EQ NULL) { TRACE_EVENT_P1("[ERR] psaPSI_DCDreq: c_Id=%d not found", c_Id) ; return ; } { PALLOC( psi_line_state_req, PSI_LINE_STATE_REQ); psi_line_state_req -> devId = cmd->devId; if( line_state EQ IO_DCD_ON ) { psi_line_state_req -> line_state = LINE_STD_DCD_ON; } else if ( line_state EQ IO_DCD_OFF ) { psi_line_state_req -> line_state = LINE_STD_DCD_OFF; } PSENDX( PSI, psi_line_state_req ); } } /* +-------------------------------------------------------------------+ | PROJECT : GSM-PS (6147) MODULE : PSA_PSI | | ROUTINE : psaPSI_ESCAPEreq | +-------------------------------------------------------------------+ PURPOSE : */ GLOBAL BOOL psaPSI_ESCAPEreq( UBYTE c_Id, UBYTE detection ) { T_ACI_DEVICE_DCB_ENTRY *device_entry = cmhPSI_GetDeviceParOverSrcID( c_Id ); U32 device_type; if ( device_entry EQ NULL ) { TRACE_EVENT_P1("[ERR] cmhPSI_SetDataRate: device for source ID = %d not found", c_Id); return (FALSE); } TRACE_FUNCTION("psaPSI_ESCAPEreq()"); device_type = device_entry->devId & DIO_TYPE_DAT_MASK; cmhPSI_SetDcbParToUnchanged( device_entry ); if (device_type EQ DIO_DATA_SER) { if( detection EQ ESC_DETECTION_ON) { device_entry->dcbPar.dio_dcb_ser.guard_period = DIO_GUARD_PER_DEFAULT; } else { device_entry->dcbPar.dio_dcb_ser.guard_period = 0; } } else if (device_type EQ DIO_DATA_MUX) { if( detection EQ ESC_DETECTION_ON) { device_entry->dcbPar.dio_dcb_ser_mux.guard_period = DIO_GUARD_PER_DEFAULT; } else { device_entry->dcbPar.dio_dcb_ser_mux.guard_period = 0; } } else /* if (device_type EQ DIO_DATA_PKT)*/ { return (FALSE); } psaPSI_SetConfReq(device_entry); return (TRUE); } /* +-------------------------------------------------------------------+ | PROJECT : GSM-PS (6147) MODULE : PSA_PSI | | ROUTINE : psaPSI_RINGreq | +-------------------------------------------------------------------+ PURPOSE : */ GLOBAL void psaPSI_RINGreq( UBYTE c_Id, UBYTE line_state ) { T_ACI_DTI_PRC_PSI *cmd = NULL; TRACE_FUNCTION("psaPSI_RINGreq"); cmd = find_element (psi_src_params, c_Id, cmhPSItest_srcId); if (cmd EQ NULL) { TRACE_EVENT_P1("[ERR] psaPSI_RINGreq: c_Id=%d not found", c_Id) ; return ; } if (BITFIELD_CHECK (cmd->data_cntr, PSI_RING_RUNNING)) { TRACE_EVENT_P2 ("[WRN] psaPSI_RINGreq(): no CNF for previous REQ (device: %d; dlci=%d)", cmd->devId, cmd->dlci); return; } /* store that PSI_RING_REQ was send this is important so that the primitive queue in the PSI entity not overloaded if no PC is connected */ BITFIELD_SET (cmd->data_cntr, PSI_RING_RUNNING); { PALLOC( psi_line_state_req, PSI_LINE_STATE_REQ); psi_line_state_req -> devId = cmd->devId; if( line_state EQ IO_RING_ON) { psi_line_state_req -> line_state = LINE_STD_RING_ON; } else if( line_state EQ IO_RING_OFF ) { psi_line_state_req -> line_state = LINE_STD_RING_OFF; } PSENDX( PSI, psi_line_state_req); } } /* +------------------------------------------------------------------------+ | PROJECT : GSM-PS (6147) MODULE : PSA_PSI | | ROUTINE : psaPSI_SetConfReq | +------------------------------------------------------------------------+ PURPOSE : */ GLOBAL void psaPSI_SetConfReq( T_ACI_DEVICE_DCB_ENTRY *dcbPar ) { U32 device_type; #ifdef _SIMULATION_ PALLOC(psi_setconf_req_test, PSI_SETCONF_REQ_TEST); device_type = dcbPar->devId & DIO_TYPE_DAT_MASK; psi_setconf_req_test->devId = dcbPar->devId; switch (device_type) { case DIO_DATA_SER: memcpy(&psi_setconf_req_test->DIO_DCB_UN.DIO_DCB_SER,&dcbPar->dcbPar.dio_dcb_ser,sizeof(T_DIO_DCB_SER)); break; case DIO_DATA_PKT: memcpy(&psi_setconf_req_test->DIO_DCB_UN.DIO_DCB_PKT,&dcbPar->dcbPar.dio_dcb_pkt,sizeof(T_DIO_DCB_PKT)); break; case DIO_DATA_SER_MUX: memcpy(&psi_setconf_req_test->DIO_DCB_UN.DIO_DCB_SER_MUX,&dcbPar->dcbPar.dio_dcb_ser_mux,sizeof(T_DIO_DCB_SER_MUX)); break; default: break; } PSENDX( PSI, psi_setconf_req_test ); #else PALLOC(psi_setconf_req, PSI_SETCONF_REQ); device_type = dcbPar->devId & DIO_TYPE_DAT_MASK; psi_setconf_req->devId = dcbPar->devId; switch (device_type) { case DIO_DATA_SER: psi_setconf_req->ptr_DIO_DCB = (T_DIO_DCB *) &dcbPar->dcbPar.dio_dcb_ser; break; case DIO_DATA_PKT: psi_setconf_req->ptr_DIO_DCB =(T_DIO_DCB *) &dcbPar->dcbPar.dio_dcb_pkt; break; case DIO_DATA_SER_MUX: psi_setconf_req->ptr_DIO_DCB =(T_DIO_DCB *) &dcbPar->dcbPar.dio_dcb_ser_mux; break; default: break; } PSENDX( PSI, psi_setconf_req ); #endif /* _SIMULATION_ */ } #endif /* DTI */ #endif /*FF_PSI*/ /*==== EOF =======================================================*/