FreeCalypso > hg > fc-tourmaline
view src/g23m-fad/t30/t30_muxs.c @ 268:f2e52cab0a73
abb_inth.c: check all interrupt causes, not just one
The original code used if - else if - else if etc constructs, thus
the first detected interrupt was the only one handled. However,
Iota ITSTATREG is a clear-on-read register, thus if we only handle
the first detected interrupt and skip checking the others, then the
other interrupts will be lost, if more than one interrupt happened
to occur in one ABB interrupt handling cycle - a form of rare race
condition. Change the code to check all interrupts that were read
in this cycle.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 13 Jun 2021 18:17:53 +0000 |
parents | fa8dc04885d8 |
children |
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/* +----------------------------------------------------------------------------- | Project : | Modul : J:\g23m-fad\t30\t30_muxs.c +----------------------------------------------------------------------------- | 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 Modul defines the functions for processing | of incomming signals for the component T30 | of the mobile station +----------------------------------------------------------------------------- */ #ifndef T30_MUXS_C #define T30_MUXS_C #endif #define ENTITY_T30 /*==== INCLUDES ===================================================*/ #include <string.h> #include <stdlib.h> #include <stddef.h> #include "typedefs.h" #include "pcm.h" #include "vsi.h" #include "macdef.h" #include "pconst.cdg" #include "mconst.cdg" #include "message.h" #include "ccdapi.h" #include "custom.h" #include "gsm.h" #include "prim.h" #include "cnf_t30.h" #include "mon_t30.h" #include "pei.h" #include "tok.h" #include "dti.h" /* functionality of the dti library */ #include "t30.h" /*==== CONST =======================================================*/ /*==== TYPES =======================================================*/ /*==== VAR EXPORT ==================================================*/ /*==== VAR LOCAL ===================================================*/ /*==== FUNCTIONS ===================================================*/ /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : T30_MUXS | | STATE : code ROUTINE : sig_bcs_mux_bcs_req | +--------------------------------------------------------------------+ PURPOSE : Process signal BCS_REQ received from process BCS formatter. The signal requests to send BCS data to FAD. */ GLOBAL void sig_bcs_mux_bcs_req (T_FAD_DATA_REQ *fad_data_req) { TRACE_FUNCTION ("sig_bcs_mux_bcs_req()"); PACCESS (fad_data_req); switch (GET_STATE (MUX)) { case T30_MUX_BCS: #ifdef KER_DEBUG_BCS ker_debug ("fad_data_req", fad_data_req->sdu.buf, (USHORT)(fad_data_req->sdu.l_buf >> 3)); #endif PSENDX (FAD, fad_data_req); break; default: PFREE (fad_data_req); break; } } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : T30_MUXS | | STATE : code ROUTINE : sig_ker_mux_mux_req | +--------------------------------------------------------------------+ PURPOSE : Process signal MUX_REQ received from process kernel. The signal switches the state of the multiplexer. */ GLOBAL void sig_ker_mux_mux_req (void) { TRACE_FUNCTION ("sig_ker_mux_mux_req()"); switch (GET_STATE (MUX)) { case T30_MUX_OFF: case T30_MUX_BCS: case T30_MUX_MSG: { switch (t30_data->mux.mode) { case MUX_OFF: SET_STATE (MUX, T30_MUX_OFF); break; case MUX_BCS: SET_STATE (MUX, T30_MUX_BCS); break; case MUX_MSG: SET_STATE (MUX, T30_MUX_MSG); break; } break; } default: break; } } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : T30_MUXS | | STATE : code ROUTINE : sig_msg_mux_msg_req | +--------------------------------------------------------------------+ PURPOSE : Process signal MSG_REQ received from process msg-formatter. The signal requests to send msg-data to fad. */ GLOBAL void sig_msg_mux_msg_req (T_FAD_DATA_REQ *fad_data_req) { TRACE_FUNCTION ("sig_msg_mux_msg_req()"); PACCESS (fad_data_req); switch (GET_STATE (MUX)) { case T30_MUX_MSG: { #ifdef KER_DEBUG_MSG ker_debug ("fad_data_req", fad_data_req->sdu.buf, (USHORT)(fad_data_req->sdu.l_buf >> 3)); #endif PSENDX (FAD, fad_data_req); t30_data->fad_data_req = NULL; break; } default: { PFREE (fad_data_req); break; } } }