FreeCalypso > hg > fc-tourmaline
view src/g23m-gprs/upm/upm_dispatcher.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 : 3G PS | Module : UPM +----------------------------------------------------------------------------- | Copyright 2003 Texas Instruments. | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments . | 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. +----------------------------------------------------------------------------- | Purpose: This module implements the process dispatcher | for the User Plane Manager (UPM) entity. | For design details, see: | 8010.939 UPM Detailed Specification +---------------------------------------------------------------------------*/ /*==== DECLARATION CONTROL =================================================*/ /*==== INCLUDES =============================================================*/ #include "upm.h" #include "upm_dispatcher.h" /*==== CONSTS ===============================================================*/ /*==== TYPES ================================================================*/ /*==== LOCALS ===============================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ /*==== PUBLIC FUNCTIONS =====================================================*/ /* +------------------------------------------------------------------------------ | Function : upm_disp_sm_activate_started_ind +------------------------------------------------------------------------------ | Description : Dispatch SM_ACTIVATE_STARTED_IND | | Parameters : sm_activate_started_ind - received primitive +------------------------------------------------------------------------------ */ void upm_disp_sm_activate_started_ind(T_SM_ACTIVATE_STARTED_IND *prim) { int nsapi; struct T_CONTEXT_DATA *ptr_context_data; (void)TRACE_FUNCTION("upm_disp_sm_activate_started_ind"); nsapi = (int)prim->nsapi; ptr_context_data = upm_get_context_data_from_nsapi(nsapi); /* UPM_DTI_REQ arrived first (or activation override). Use present data structures. */ if (ptr_context_data != NULL) { #ifdef UPM_WITHOUT_USER_PLANE /*T_UPM_USER_PLANE_DATA is not visible for GPRS world*/ memset(ptr_context_data, 0, sizeof(struct T_CONTEXT_DATA) /* - sizeof(struct T_UPM_USER_PLANE_DATA)*/); #else /*#ifndef UPM_WITHOUT_USER_PLANE*/ memset(ptr_context_data, 0, sizeof(struct T_CONTEXT_DATA) - sizeof(struct T_UPM_USER_PLANE_DATA)); #endif /*#ifndef UPM_WITHOUT_USER_PLANE*/ ptr_context_data->nsapi = (U8)nsapi; } else { MALLOC(ptr_context_data, (U32)sizeof(struct T_CONTEXT_DATA)); if (ptr_context_data == NULL) { (void)TRACE_ERROR("Unable to allocate data structure for new context!"); return; } memset(ptr_context_data, 0, sizeof(struct T_CONTEXT_DATA)); upm_assign_context_data_to_nsapi(ptr_context_data, nsapi); } TRACE_ASSERT(ptr_context_data != NULL); upm_link_control_init(ptr_context_data); #ifdef TI_UMTS upm_rab_control_init(ptr_context_data); #endif /* TI_UMTS */ #ifdef TI_GPRS upm_sndcp_control_init(ptr_context_data); #endif /* TI_GPRS */ #ifdef TI_DUAL_MODE upm_rat_control_init( (T_PS_rat)prim->rat ); #endif /* TI_DUAL_MODE */ upm_link_control(ptr_context_data, UPM_P_SM_ACTIVATE_STARTED_IND, prim); } /* +------------------------------------------------------------------------------ | Function : upm_disp_sm_activate_ind +------------------------------------------------------------------------------ | Description : Dispatch SM_ACTIVATE_IND | | Parameters : sm_activate_ind - received primitive +------------------------------------------------------------------------------ */ void upm_disp_sm_activate_ind(T_SM_ACTIVATE_IND *sm_activate_ind) { struct T_CONTEXT_DATA *ptr_context_data; (void)TRACE_FUNCTION("upm_disp_sm_activate_ind"); ptr_context_data = upm_get_context_data_from_nsapi(sm_activate_ind->nsapi); if (ptr_context_data != NULL) { upm_link_control(ptr_context_data, UPM_P_SM_ACTIVATE_IND, sm_activate_ind); } else { (void)TRACE_ERROR("Tried to complete activation of non-existent context!"); } } /* +------------------------------------------------------------------------------ | Function : upm_disp_sm_modify_ind +------------------------------------------------------------------------------ | Description : Dispatch SM_MODIFY_IND | | Parameters : sm_modify_ind - received primitive +------------------------------------------------------------------------------ */ void upm_disp_sm_modify_ind (T_SM_MODIFY_IND *sm_modify_ind) { struct T_CONTEXT_DATA *ptr_context_data; (void)TRACE_FUNCTION("upm_disp_sm_modify_ind"); ptr_context_data = upm_get_context_data_from_nsapi(sm_modify_ind->nsapi); if (ptr_context_data != NULL) { upm_link_control(ptr_context_data, UPM_P_SM_MODIFY_IND, sm_modify_ind); } else { (void)TRACE_ERROR("Tried to modify non-existent context!"); } } /* +------------------------------------------------------------------------------ | Function : upm_disp_upm_count_req +------------------------------------------------------------------------------ | Description : Dispatch UPM_COUNT_REQ | | Parameters : prim - received primitive +------------------------------------------------------------------------------ */ void upm_disp_upm_count_req (T_UPM_COUNT_REQ *prim) { struct T_CONTEXT_DATA *ptr_context_data; (void)TRACE_FUNCTION("upm_disp_upm_count_req"); ptr_context_data = upm_get_context_data_from_nsapi(prim->nsapi); if (ptr_context_data != NULL) { #ifdef TI_GPRS #ifdef TI_DUAL_MODE if (upm_get_current_rat() == PS_RAT_GSM) #endif /* TI_DUAL_MODE */ { upm_sndcp_dispatch_upm_count_req(prim); } #endif /* TI_GPRS */ #ifdef TI_DUAL_MODE else #endif /* TI_DUAL_MODE */ #ifdef TI_UMTS { upm_dti_dispatch_upm_count_req(ptr_context_data, prim->reset); } #endif } else { (void)TRACE_EVENT_P1("Warning: Received COUNT_REQ for undefined " "NSAPI/context; ignored...", prim->nsapi); } } /*==== END OF FILE ==========================================================*/