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/* |
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* Copyright (C) 2005-2008 by Pieter Palmers |
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* |
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* This file is part of FFADO |
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* FFADO = Free Firewire (pro-)audio drivers for linux |
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* |
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* FFADO is based upon FreeBoB. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 2 of the License, or |
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* (at your option) version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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#include "config.h" |
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#include "IsoHandler.h" |
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#include "ieee1394service.h" |
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#include "IsoHandlerManager.h" |
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#include "libstreaming/generic/StreamProcessor.h" |
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#include "libutil/PosixThread.h" |
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#include <errno.h> |
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#include <netinet/in.h> |
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#include <assert.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <iostream> |
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using namespace std; |
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using namespace Streaming; |
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IMPL_DEBUG_MODULE( IsoHandler, IsoHandler, DEBUG_LEVEL_NORMAL ); |
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|
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/* the C callbacks */ |
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enum raw1394_iso_disposition |
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IsoHandler::iso_transmit_handler(raw1394handle_t handle, |
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unsigned char *data, unsigned int *length, |
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unsigned char *tag, unsigned char *sy, |
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int cycle, unsigned int dropped1) { |
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|
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IsoHandler *xmitHandler = static_cast<IsoHandler *>(raw1394_get_userdata(handle)); |
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assert(xmitHandler); |
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unsigned int skipped = (dropped1 & 0xFFFF0000) >> 16; |
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unsigned int dropped = dropped1 & 0xFFFF; |
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|
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return xmitHandler->getPacket(data, length, tag, sy, cycle, dropped, skipped); |
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} |
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|
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enum raw1394_iso_disposition |
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IsoHandler::iso_receive_handler(raw1394handle_t handle, unsigned char *data, |
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unsigned int length, unsigned char channel, |
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unsigned char tag, unsigned char sy, unsigned int cycle, |
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unsigned int dropped1) { |
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|
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IsoHandler *recvHandler = static_cast<IsoHandler *>(raw1394_get_userdata(handle)); |
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assert(recvHandler); |
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|
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unsigned int skipped = (dropped1 & 0xFFFF0000) >> 16; |
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unsigned int dropped = dropped1 & 0xFFFF; |
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return recvHandler->putPacket(data, length, channel, tag, sy, cycle, dropped, skipped); |
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} |
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|
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int IsoHandler::busreset_handler(raw1394handle_t handle, unsigned int generation) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "Busreset happened, generation %d...\n", generation); |
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|
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IsoHandler *handler = static_cast<IsoHandler *>(raw1394_get_userdata(handle)); |
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assert(handler); |
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return handler->handleBusReset(generation); |
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} |
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|
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IsoHandler::IsoHandler(IsoHandlerManager& manager, enum EHandlerType t) |
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: m_manager( manager ) |
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, m_type ( t ) |
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, m_handle( 0 ) |
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, m_buf_packets( 400 ) |
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, m_max_packet_size( 1024 ) |
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, m_irq_interval( -1 ) |
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, m_Client( 0 ) |
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, m_speed( RAW1394_ISO_SPEED_400 ) |
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, m_prebuffers( 0 ) |
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, m_dont_exit_iterate_loop( true ) |
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, m_State( E_Created ) |
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#ifdef DEBUG |
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, m_packets ( 0 ) |
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#endif |
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{ |
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} |
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|
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IsoHandler::IsoHandler(IsoHandlerManager& manager, enum EHandlerType t, |
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unsigned int buf_packets, unsigned int max_packet_size, int irq) |
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: m_manager( manager ) |
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, m_type ( t ) |
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, m_handle( 0 ) |
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, m_buf_packets( buf_packets ) |
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, m_max_packet_size( max_packet_size ) |
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, m_irq_interval( irq ) |
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, m_Client( 0 ) |
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, m_speed( RAW1394_ISO_SPEED_400 ) |
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, m_prebuffers( 0 ) |
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, m_State( E_Created ) |
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#ifdef DEBUG |
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, m_packets ( 0 ) |
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#endif |
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{ |
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} |
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IsoHandler::IsoHandler(IsoHandlerManager& manager, enum EHandlerType t, unsigned int buf_packets, |
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unsigned int max_packet_size, int irq, |
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enum raw1394_iso_speed speed) |
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: m_manager( manager ) |
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, m_type ( t ) |
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, m_handle( 0 ) |
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, m_buf_packets( buf_packets ) |
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, m_max_packet_size( max_packet_size ) |
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, m_irq_interval( irq ) |
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, m_Client( 0 ) |
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, m_speed( speed ) |
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, m_prebuffers( 0 ) |
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, m_State( E_Created ) |
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#ifdef DEBUG |
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, m_packets ( 0 ) |
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#endif |
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{ |
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} |
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IsoHandler::~IsoHandler() { |
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// Don't call until libraw1394's raw1394_new_handle() function has been |
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// fixed to correctly initialise the iso_packet_infos field. Bug is |
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// confirmed present in libraw1394 1.2.1. In any case, |
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// raw1394_destroy_handle() will do any iso system shutdown required. |
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// raw1394_iso_shutdown(m_handle); |
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if(m_handle) { |
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if (m_State == E_Running) { |
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disable(); |
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} |
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raw1394_destroy_handle(m_handle); |
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} |
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} |
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bool |
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IsoHandler::canIterateClient() |
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{ |
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debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, "checking...\n"); |
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if(m_Client) { |
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bool result; |
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if (m_type == eHT_Receive) { |
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result = m_Client->canProducePacket(); |
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} else { |
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result = m_Client->canConsumePacket(); |
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} |
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debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, " returns %d\n", result); |
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return result; |
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} else { |
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debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, " no client\n"); |
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} |
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return false; |
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} |
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|
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bool |
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IsoHandler::iterate() { |
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debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, "(%p, %s) Iterating ISO handler...\n", |
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this, getTypeString()); |
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if(m_State == E_Running) { |
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#if ISOHANDLER_FLUSH_BEFORE_ITERATE |
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flush(); |
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#endif |
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if(raw1394_loop_iterate(m_handle)) { |
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debugError( "IsoHandler (%p): Failed to iterate handler: %s\n", |
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this, strerror(errno)); |
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return false; |
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} |
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debugOutputExtreme(DEBUG_LEVEL_VERY_VERBOSE, "(%p, %s) done interating ISO handler...\n", |
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this, getTypeString()); |
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return true; |
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} else { |
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debugOutput(DEBUG_LEVEL_VERBOSE, "(%p, %s) Not iterating a non-running handler...\n", |
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this, getTypeString()); |
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return false; |
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} |
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} |
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bool |
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IsoHandler::init() |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "IsoHandler (%p) enter...\n",this); |
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// check the state |
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if(m_State != E_Created) { |
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debugError("Incorrect state, expected E_Created, got %d\n",(int)m_State); |
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return false; |
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} |
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|
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// the main handle for the ISO traffic |
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m_handle = raw1394_new_handle_on_port( m_manager.get1394Service().getPort() ); |
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if ( !m_handle ) { |
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if ( !errno ) { |
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debugError("libraw1394 not compatible\n"); |
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} else { |
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debugError("Could not get 1394 handle: %s\n", strerror(errno) ); |
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debugError("Are ieee1394 and raw1394 drivers loaded?\n"); |
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} |
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return false; |
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} |
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raw1394_set_userdata(m_handle, static_cast<void *>(this)); |
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|
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// bus reset handling |
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if(raw1394_busreset_notify (m_handle, RAW1394_NOTIFY_ON)) { |
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debugWarning("Could not enable busreset notification.\n"); |
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debugWarning(" Error message: %s\n",strerror(errno)); |
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debugWarning("Continuing without bus reset support.\n"); |
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} else { |
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// apparently this cannot fail |
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raw1394_set_bus_reset_handler(m_handle, busreset_handler); |
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} |
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// update the internal state |
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m_State=E_Initialized; |
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return true; |
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} |
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bool IsoHandler::disable() |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "(%p, %s) enter...\n", |
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this, (m_type==eHT_Receive?"Receive":"Transmit")); |
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|
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// check state |
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if(m_State == E_Prepared) return true; |
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if(m_State != E_Running) { |
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debugError("Incorrect state, expected E_Running, got %d\n",(int)m_State); |
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return false; |
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} |
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|
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// this is put here to try and avoid the |
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// Runaway context problem |
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// don't know if it will help though. |
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raw1394_iso_xmit_sync(m_handle); |
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raw1394_iso_stop(m_handle); |
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m_State = E_Prepared; |
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return true; |
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} |
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|
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/** |
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* Bus reset handler |
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* |
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* @return ? |
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*/ |
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|
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int |
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IsoHandler::handleBusReset(unsigned int generation) |
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{ |
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debugOutput( DEBUG_LEVEL_VERBOSE, "bus reset...\n"); |
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|
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#define CSR_CYCLE_TIME 0x200 |
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#define CSR_REGISTER_BASE 0xfffff0000000ULL |
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// do a simple read on ourself in order to update the internal structures |
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// this avoids read failures after a bus reset |
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quadlet_t buf=0; |
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raw1394_read(m_handle, raw1394_get_local_id(m_handle), |
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CSR_REGISTER_BASE | CSR_CYCLE_TIME, 4, &buf); |
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|
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// notify the client of the fact that we have died |
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m_Client->handlerDied(); |
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|
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if(!disable()) { |
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debugError("(%p) Could not disable IsoHandler\n", this); |
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} |
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|
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// request the manager to update it's shadow map |
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m_manager.requestShadowMapUpdate(); |
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return 0; |
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} |
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|
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void IsoHandler::dumpInfo() |
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{ |
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int channel=-1; |
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if (m_Client) channel=m_Client->getChannel(); |
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|
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Handler type................: %s\n", |
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getTypeString()); |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Port, Channel...............: %2d, %2d\n", |
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m_manager.get1394Service().getPort(), channel); |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Buffer, MaxPacketSize, IRQ..: %4d, %4d, %4d\n", |
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m_buf_packets, m_max_packet_size, m_irq_interval); |
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if (this->getType() == eHT_Transmit) { |
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debugOutputShort( DEBUG_LEVEL_NORMAL, " Speed, PreBuffers...........: %2d, %2d\n", |
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m_speed, m_prebuffers); |
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} |
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} |
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|
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void IsoHandler::setVerboseLevel(int l) |
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{ |
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setDebugLevel(l); |
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} |
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|
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bool IsoHandler::registerStream(StreamProcessor *stream) |
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{ |
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assert(stream); |
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debugOutput( DEBUG_LEVEL_VERBOSE, "registering stream (%p)\n", stream); |
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|
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if (m_Client) { |
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debugFatal( "Generic IsoHandlers can have only one client\n"); |
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return false; |
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} |
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m_Client=stream; |
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return true; |
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} |
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|
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bool IsoHandler::unregisterStream(StreamProcessor *stream) |
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{ |
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assert(stream); |
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debugOutput( DEBUG_LEVEL_VERBOSE, "unregistering stream (%p)\n", stream); |
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|
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if(stream != m_Client) { |
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debugFatal( "no client registered\n"); |
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return false; |
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} |
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m_Client=0; |
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return true; |
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} |
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|
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void IsoHandler::flush() |
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{ |
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if(m_type == eHT_Receive) { |
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raw1394_iso_recv_flush(m_handle); |
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} else { |
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// do nothing |
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} |
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} |
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|
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// ISO packet interface |
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enum raw1394_iso_disposition IsoHandler::putPacket( |
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unsigned char *data, unsigned int length, |
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unsigned char channel, unsigned char tag, unsigned char sy, |
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unsigned int cycle, unsigned int dropped, unsigned int skipped) { |
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|
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debugOutputExtreme(DEBUG_LEVEL_ULTRA_VERBOSE, |
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"received packet: length=%d, channel=%d, cycle=%d\n", |
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length, channel, cycle); |
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#ifdef DEBUG |
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m_packets++; |
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if (length > m_max_packet_size) { |
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debugWarning("(%p, %s) packet too large: len=%u max=%u\n", |
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this, getTypeString(), length, m_max_packet_size); |
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} |
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#endif |
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if(m_Client) { |
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enum raw1394_iso_disposition retval = m_Client->putPacket(data, length, channel, tag, sy, cycle, dropped, skipped); |
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if (retval == RAW1394_ISO_OK) { |
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if (m_dont_exit_iterate_loop) { |
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return RAW1394_ISO_OK; |
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} else { |
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m_dont_exit_iterate_loop = true; |
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debugOutput(DEBUG_LEVEL_VERBOSE, |
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"(%p) loop exit requested\n", |
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this); |
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return RAW1394_ISO_DEFER; |
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} |
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} else { |
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return retval; |
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} |
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} |
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|
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return RAW1394_ISO_OK; |
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} |
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|
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|
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enum raw1394_iso_disposition |
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IsoHandler::getPacket(unsigned char *data, unsigned int *length, |
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unsigned char *tag, unsigned char *sy, |
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int cycle, unsigned int dropped, unsigned int skipped) { |
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|
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debugOutputExtreme(DEBUG_LEVEL_ULTRA_VERBOSE, |
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"sending packet: length=%d, cycle=%d\n", |
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*length, cycle); |
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#ifdef DEBUG |
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m_packets++; |
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#endif |
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if(m_Client) { |
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enum raw1394_iso_disposition retval; |
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retval = m_Client->getPacket(data, length, tag, sy, cycle, dropped, skipped, m_max_packet_size); |
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#ifdef DEBUG |
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394 |
if (*length > m_max_packet_size) { |
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debugWarning("(%p, %s) packet too large: len=%u max=%u\n", |
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this, getTypeString(), *length, m_max_packet_size); |
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} |
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#endif |
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if (retval == RAW1394_ISO_OK) { |
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if (m_dont_exit_iterate_loop) { |
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return RAW1394_ISO_OK; |
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} else { |
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m_dont_exit_iterate_loop = true; |
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debugOutput(DEBUG_LEVEL_VERBOSE, |
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"(%p) loop exit requested\n", |
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this); |
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return RAW1394_ISO_DEFER; |
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408 |
} |
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409 |
} else { |
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410 |
return retval; |
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} |
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} |
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*tag = 0; |
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*sy = 0; |
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*length = 0; |
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return RAW1394_ISO_OK; |
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417 |
} |
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418 |
|
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419 |
bool IsoHandler::prepare() |
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420 |
{ |
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421 |
// check the state |
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422 |
if(m_State != E_Initialized) { |
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423 |
debugError("Incorrect state, expected E_Initialized, got %d\n",(int)m_State); |
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424 |
return false; |
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425 |
} |
---|
426 |
|
---|
427 |
// Don't call until libraw1394's raw1394_new_handle() function has been |
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428 |
// fixed to correctly initialise the iso_packet_infos field. Bug is |
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429 |
// confirmed present in libraw1394 1.2.1. |
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430 |
// raw1394_iso_shutdown(m_handle); |
---|
431 |
m_State = E_Prepared; |
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432 |
|
---|
433 |
debugOutput( DEBUG_LEVEL_VERBOSE, "Preparing iso handler (%p, client=%p)\n", this, m_Client); |
---|
434 |
dumpInfo(); |
---|
435 |
if (getType() == eHT_Receive) { |
---|
436 |
if(m_irq_interval > 1) { |
---|
437 |
if(raw1394_iso_recv_init(m_handle, |
---|
438 |
iso_receive_handler, |
---|
439 |
m_buf_packets, |
---|
440 |
m_max_packet_size, |
---|
441 |
m_Client->getChannel(), |
---|
442 |
RAW1394_DMA_BUFFERFILL, |
---|
443 |
// RAW1394_DMA_PACKET_PER_BUFFER, |
---|
444 |
m_irq_interval)) { |
---|
445 |
debugFatal("Could not do receive initialisation (DMA_BUFFERFILL)!\n" ); |
---|
446 |
debugFatal(" %s\n",strerror(errno)); |
---|
447 |
return false; |
---|
448 |
} |
---|
449 |
} else { |
---|
450 |
if(raw1394_iso_recv_init(m_handle, |
---|
451 |
iso_receive_handler, |
---|
452 |
m_buf_packets, |
---|
453 |
m_max_packet_size, |
---|
454 |
m_Client->getChannel(), |
---|
455 |
RAW1394_DMA_PACKET_PER_BUFFER, |
---|
456 |
m_irq_interval)) { |
---|
457 |
debugFatal("Could not do receive initialisation (PACKET_PER_BUFFER)!\n" ); |
---|
458 |
debugFatal(" %s\n",strerror(errno)); |
---|
459 |
return false; |
---|
460 |
} |
---|
461 |
} |
---|
462 |
return true; |
---|
463 |
} else { |
---|
464 |
if(raw1394_iso_xmit_init(m_handle, |
---|
465 |
iso_transmit_handler, |
---|
466 |
m_buf_packets, |
---|
467 |
m_max_packet_size, |
---|
468 |
m_Client->getChannel(), |
---|
469 |
m_speed, |
---|
470 |
m_irq_interval)) { |
---|
471 |
debugFatal("Could not do xmit initialisation!\n" ); |
---|
472 |
return false; |
---|
473 |
} |
---|
474 |
return true; |
---|
475 |
} |
---|
476 |
} |
---|
477 |
|
---|
478 |
bool IsoHandler::enable(int cycle) |
---|
479 |
{ |
---|
480 |
debugOutput( DEBUG_LEVEL_VERBOSE, "start on cycle %d\n", cycle); |
---|
481 |
// check the state |
---|
482 |
if(m_State != E_Prepared) { |
---|
483 |
if(!prepare()) { |
---|
484 |
debugFatal("Could not prepare handler\n"); |
---|
485 |
return false; |
---|
486 |
} |
---|
487 |
} |
---|
488 |
|
---|
489 |
if (getType() == eHT_Receive) { |
---|
490 |
if(raw1394_iso_recv_start(m_handle, cycle, -1, 0)) { |
---|
491 |
debugFatal("Could not start receive handler (%s)\n",strerror(errno)); |
---|
492 |
dumpInfo(); |
---|
493 |
return false; |
---|
494 |
} |
---|
495 |
} else { |
---|
496 |
if(raw1394_iso_xmit_start(m_handle, cycle, m_prebuffers)) { |
---|
497 |
debugFatal("Could not start xmit handler (%s)\n",strerror(errno)); |
---|
498 |
dumpInfo(); |
---|
499 |
return false; |
---|
500 |
} |
---|
501 |
} |
---|
502 |
|
---|
503 |
m_State = E_Running; |
---|
504 |
return true; |
---|
505 |
} |
---|
506 |
|
---|
507 |
/** |
---|
508 |
* @brief convert a EHandlerType to a string |
---|
509 |
* @param t the type |
---|
510 |
* @return a char * describing the state |
---|
511 |
*/ |
---|
512 |
const char * |
---|
513 |
IsoHandler::eHTToString(enum EHandlerType t) { |
---|
514 |
switch (t) { |
---|
515 |
case eHT_Receive: return "Receive"; |
---|
516 |
case eHT_Transmit: return "Transmit"; |
---|
517 |
default: return "error: unknown type"; |
---|
518 |
} |
---|
519 |
} |
---|