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#include <algorithm>
#include "associator.H"
#include <trace/interface.H>
namespace DeviceFW
{
trace_desc_t* g_traceBuffer = NULL;
TRAC_INIT(&g_traceBuffer, "DevFW", 4096);
Associator::Associator() : iv_mutex(mutex_create())
{
TRACFCOMP(g_traceBuffer, ENTER_MRK "Associator::Associator");
// Allocate first level of map (access types).
iv_routeMap = iv_associations.allocate(LAST_DRIVER_ACCESS_TYPE);
}
Associator::~Associator()
{
mutex_destroy(iv_mutex);
TRACFCOMP(g_traceBuffer, EXIT_MRK "Associator::~Associator");
}
void Associator::registerRoute(int64_t i_opType,
int64_t i_accType,
int64_t i_targetType,
deviceOp_t i_regRoute)
{
TRACFCOMP(g_traceBuffer, "Device route registered for (%d, %d, %d)",
i_opType, i_accType, i_targetType);
// The ranges of the parameters should all be verified by the
// compiler due to the template specializations in driverif.H.
// No assert-checks will be done here.
mutex_lock(iv_mutex);
size_t ops = 0;
AssociationData targets = AssociationData();
// Look up second level of map (op-type) or allocate fresh block.
ops = iv_associations[iv_routeMap][i_accType].offset;
if (0 == ops)
{
// space for LAST_OP_TYPE plus WILDCARD(-1).
ops = iv_associations.allocate(LAST_OP_TYPE + 1) + 1;
iv_associations[iv_routeMap][i_accType].offset = ops;
}
// Look up third level of map (access-type) or allocate fresh block.
targets = iv_associations[ops][i_opType];
if (0 == targets.offset)
{
// To conserve space only allocate 1 block for WILDCARD.
if (WILDCARD == i_targetType)
{
targets.offset = iv_associations.allocate(1);
targets.flag = true; // True flag indicates WILDCARD.
}
else
{
// Allocate full number of spaces.
targets.offset = iv_associations.allocate(LAST_TARGET_TYPE);
}
iv_associations[ops][i_opType] = targets;
}
// Ensure the right block size was allocated previously for this
// target-type (wildcard vs non-wildcard).
if(((targets.flag) && (i_targetType != WILDCARD)) ||
((!targets.flag) && (i_targetType == WILDCARD)))
{
// TODO: Create error log for invalid target type?
bool l_invalidTargetType = false;
assert(l_invalidTargetType);
}
// Index offset to proper target type. This is now lowest level of map.
targets.offset += (i_targetType == WILDCARD ? 0 : i_targetType);
// Search function vector for entry.
opVector_t::iterator opLocation = std::find(iv_operations.begin(),
iv_operations.end(),
i_regRoute);
// Insert function into vector if not found.
if (iv_operations.end() == opLocation)
{
iv_operations.push_back(i_regRoute);
opLocation = iv_operations.end() - 1;
}
// TODO: Implement std::distance algorithm and change to:
// std::distance(iv_operations.begin(), opLocation);
size_t opLoc = opLocation - iv_operations.begin();
// Set function offset into map. True flag indicates valid.
(*iv_associations[targets.offset]) = AssociationData(true, opLoc);
mutex_unlock(iv_mutex);
}
ErrorHandle_t Associator::performOp(OperationType i_opType,
TargetHandle_t i_target,
void* io_buffer, size_t& io_buflen,
int64_t i_accessType, va_list i_addr)
const
{
TRACDCOMP(g_traceBuffer, "Device op requested for (%d, %d, %d)",
i_opType, i_accessType, /*TODO: i_target->type*/PROCESSOR);
// The ranges of the parameters should all be verified by the
// compiler due to the template specializations in driverif.H.
// No assert-checks will be done here.
ErrorHandle_t l_errl = NULL;
mutex_lock(iv_mutex);
// Function pointer found for this route request.
deviceOp_t l_devRoute = NULL;
// Pointer to root of the map.
const AssociationData* routeMap = iv_associations[iv_routeMap];
do
{
// Follow first level (access type), verify.
if (0 == routeMap[i_accessType].offset)
{
break;
}
const AssociationData* ops =
iv_associations[routeMap[i_accessType].offset];
// Check op type = WILDCARD registrations.
if (0 != ops[WILDCARD].offset)
{
// Check access type = WILDCARD registrations.
if (ops[WILDCARD].flag)
{
l_devRoute =
iv_operations[
iv_associations[ops[WILDCARD].offset]->offset];
break;
}
// Check access type = i_target->type registrations.
const AssociationData* targets =
iv_associations[ops[WILDCARD].offset];
if (targets[/*TODO: i_target->type*/PROCESSOR].flag)
{
l_devRoute =
iv_operations[
targets[/*TODO: i_target->type*/PROCESSOR].offset];
break;
}
}
// Check op type = i_opType registrations.
if (0 != ops[i_opType].offset)
{
// Check access type = WILDCARD registrations.
if(ops[i_opType].flag)
{
l_devRoute =
iv_operations[
iv_associations[ops[i_opType].offset]->offset];
break;
}
// Check access type = i_target->type registrations.
const AssociationData* targets =
iv_associations[ops[i_opType].offset];
if (targets[/*TODO: i_target->type*/PROCESSOR].flag)
{
l_devRoute =
iv_operations[
targets[/*TODO: i_target->type*/PROCESSOR].offset];
break;
}
}
} while(0);
mutex_unlock(iv_mutex);
// Call function if one was found, create error otherwise.
if (NULL == l_devRoute)
{
// TODO: create error log.
assert(NULL != l_devRoute);
}
else
{
l_errl = (*l_devRoute)(i_opType, i_target,
io_buffer, io_buflen,
i_accessType, i_addr);
}
return l_errl;
}
}
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