FreeCalypso > hg > fc-tourmaline
view src/nucleus/pice.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 | 4e78acac3d88 |
| children |
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/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* pice.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* PI - Pipe Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains error checking routines for core functions */ /* of the Pipe component. This permits easy removal of error */ /* checking logic when it is not needed. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* PICE_Create_Pipe Create a pipe */ /* PICE_Delete_Pipe Delete a pipe */ /* PICE_Send_To_Pipe Send a pipe message */ /* PICE_Receive_From_Pipe Receive a pipe message */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* pi_extr.h Pipe functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Split original error checking */ /* file and changed function */ /* interfaces, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 12-19-1995 Modified PICE_Receive_From_Pipe, */ /* resulting in version 1.1+ */ /* (spr065) */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3 */ /* 06-04-1998 Modified PICE_Send_To_Pipe to */ /* check for a size of 0, created */ /* version 1.3a. (SPR493) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "cs_extr.h" /* Common service functions */ #include "tc_extr.h" /* Thread control functions */ #include "pi_extr.h" /* Pipe functions */ /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PICE_Create_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the pipe create function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIC_Create_Pipe Actual create pipe function */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* name Pipe name */ /* start_address Starting address of actual */ /* pipe area */ /* pipe_size Total size of pipe */ /* message_type Type of message supported by */ /* the pipe (fixed/variable) */ /* message_size Size of message. Variable */ /* message-length queues, this*/ /* represents the maximum size*/ /* suspend_type Suspension type */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* NU_INVALID_MEMORY Invalid pipe starting addr */ /* NU_INVALID_SIZE Invalid pipe size and/or */ /* size of message */ /* NU_INVALID_MESSAGE Invalid message type */ /* NU_INVALID_SUSPEND Invalid suspend type */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS PICE_Create_Pipe(NU_PIPE *pipe_ptr, CHAR *name, VOID *start_address, UNSIGNED pipe_size, OPTION message_type, UNSIGNED message_size, OPTION suspend_type) { PI_PCB *pipe; STATUS status; UNSIGNED overhead; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if pipe supports variable length messages. If so, additional bytes of overhead are required. */ if (message_type == NU_VARIABLE_SIZE) /* Calculate the number of overhead bytes necessary for the additional word of overhead and the pad-bytes required to keep the pipe write pointer on an UNSIGNED data element alignment. */ overhead = sizeof(UNSIGNED) + (((message_size + sizeof(UNSIGNED) - 1)/sizeof(UNSIGNED)) * sizeof(UNSIGNED)) - message_size; else /* Fixed-size message queues require no additional overhead. */ overhead = 0; /* Determine if there is an error with the pipe pointer. */ if ((pipe == NU_NULL) || (pipe -> pi_id == PI_PIPE_ID)) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (start_address == NU_NULL) /* Indicate that the starting address of the pipe is invalid. */ status = NU_INVALID_MEMORY; else if ((pipe_size == 0) || (message_size == 0) || ((message_size + overhead) > pipe_size)) /* Indicate that one or both of the size parameters are invalid. */ status = NU_INVALID_SIZE; else if ((message_type != NU_FIXED_SIZE) && (message_type != NU_VARIABLE_SIZE)) /* Indicate that the message type is invalid. */ status = NU_INVALID_MESSAGE; else if ((suspend_type != NU_FIFO) && (suspend_type != NU_PRIORITY)) /* Indicate that the suspend type is invalid. */ status = NU_INVALID_SUSPEND; else /* All the parameters are okay, call the actual function to create a pipe. */ status = PIC_Create_Pipe(pipe_ptr, name, start_address, pipe_size, message_type, message_size, suspend_type); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PICE_Delete_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameter supplied */ /* to the pipe delete function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIC_Delete_Pipe Actual delete pipe function */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS PICE_Delete_Pipe(NU_PIPE *pipe_ptr) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else /* All the parameters are okay, call the actual function to delete a pipe. */ status = PIC_Delete_Pipe(pipe_ptr); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PICE_Send_To_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the send message to pipe function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIC_Send_To_Pipe Actual send pipe message */ /* function */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* message Pointer to message to send */ /* size Size of message to send */ /* suspend Suspension option if full */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* NU_INVALID_POINTER Invalid message pointer */ /* NU_INVALID_SIZE Invalid message size */ /* NU_INVALID_SUSPEND Invalid suspend request */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 06-04-1998 Corrected SPR493 */ /* */ /*************************************************************************/ STATUS PICE_Send_To_Pipe(NU_PIPE *pipe_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (message == NU_NULL) /* Indicate that the pointer to the message is invalid. */ status = NU_INVALID_POINTER; else if (size == 0) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((pipe -> pi_fixed_size) && (size != pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((!pipe -> pi_fixed_size) && (size > pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a non-task thread. */ status = NU_INVALID_SUSPEND; else /* All the parameters are okay, call the actual function to send a message to a pipe. */ status = PIC_Send_To_Pipe(pipe_ptr, message, size, suspend); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PICE_Receive_From_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the receive message from pipe function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIC_Receive_From_Pipe Actual receive message from */ /* pipe */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* message Pointer to message to send */ /* size Size of the message */ /* actual_size Size of message received */ /* suspend Suspension option if empty */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* NU_INVALID_POINTER Invalid message pointer */ /* NU_INVALID_SIZE Invalid message size */ /* NU_INVALID_SUSPEND Invalid suspend request */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 12-19-1995 Changed the variable pipe check */ /* from "message size not equal */ /* to pipe message size" to */ /* "message size greater than */ /* pipe message size",resulting */ /* in version 1.1+ (spr065) */ /* */ /*************************************************************************/ STATUS PICE_Receive_From_Pipe(NU_PIPE *pipe_ptr, VOID *message, UNSIGNED size, UNSIGNED *actual_size, UNSIGNED suspend) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (message == NU_NULL) /* Indicate that the pointer to the message is invalid. */ status = NU_INVALID_POINTER; else if (size == 0) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((pipe -> pi_fixed_size) && (size != pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((!pipe -> pi_fixed_size) && (size > pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a non-task thread. */ status = NU_INVALID_SUSPEND; else /* All the parameters are okay, call the actual function to receive a message from a pipe. */ status = PIC_Receive_From_Pipe(pipe_ptr, message, size, actual_size, suspend); /* Return completion status. */ return(status); }