/*
* ======== MEM_redefine ========
*/
Void MEM_redefine(Int id, Ptr base, MEM_sizep length)
{
IArg key;
HeapMem_Params params;
HeapMem_Handle heap;
/* Make sure the segid is valid. */
if ((id < 0) || (id == 0) || ((Uns)id >= MEM_tabSize)) {
SYS_error("MEM", SYS_EINVAL);
return;
}
key = HeapMem_enter();
if (MEM_table[id] == NULL) {
HeapMem_leave(key);
SYS_error("MEM", SYS_EINVAL);
return;
}
heap = HeapMem_Handle_from_xdc_runtime_IHeap(MEM_table[id]);
HeapMem_destruct(HeapMem_struct(heap));
HeapMem_Params_init(¶ms);
params.size = length;
params.buf = base;
HeapMem_construct(HeapMem_struct(heap), ¶ms);
HeapMem_leave(key);
}
/*
* ======== MEM_alloc ========
*/
Ptr MEM_alloc(Int id, size_t size, size_t align)
{
Error_Block eb;
Error_init(&eb);
if (id < 0) {
SYS_error( "MEM", SYS_EALLOC, id, size, align );
return (NULL);
}
/*
* Allow non-legacy apps to use modules that use MEM (e.g. drivers).
* Use the default heap in xdc.runtime.Memory.
*/
if (MEM_tabSize == 0) {
return (xdc_runtime_Memory_alloc(NULL, size, align, &eb));
}
if ((Uns)id >= MEM_tabSize) {
SYS_error( "MEM", SYS_EALLOC, id, size, align );
return (NULL);
}
if (MEM_table[id] == NULL) {
SYS_error( "MEM", SYS_EALLOC, id, size, align );
return(FALSE);
}
return (xdc_runtime_Memory_alloc(MEM_table[id], size, align, &eb));
}
/*
* ======== MEM_free ========
*/
Bool MEM_free(Int id, Ptr addr, size_t size)
{
if (id < 0) {
SYS_error("MEM", SYS_EFREE, id, addr, size);
return (FALSE);
}
/*
* Allow non-legacy apps to use modules that use MEM (e.g. drivers).
* Use the default heap in xdc.runtime.Memory.
*/
if (MEM_tabSize == 0) {
xdc_runtime_Memory_free(NULL, addr, size);
return (TRUE);
}
if (((Uns)id < MEM_tabSize) && (MEM_table[id] != NULL)) {
xdc_runtime_Memory_free(MEM_table[id], addr, size);
return (TRUE);
}
else {
SYS_error("MEM", SYS_EFREE, id, addr, size);
return (FALSE);
}
}
/*
* ======== MEM_stat ========
*/
Bool MEM_stat(Int id, MEM_Stat *statbuf)
{
IArg key;
HeapMem_Handle heap;
Memory_Stats stat;
HeapMem_ExtendedStats extendedStats;
if ((id < 0) || ((Uns)id >= MEM_tabSize) || (MEM_table[id] == NULL)) {
SYS_error("MEM", SYS_EINVAL);
return (FALSE);
}
heap = HeapMem_Handle_from_xdc_runtime_IHeap(MEM_table[id]);
/* Use HeapMem's gate for thread-safety */
key = HeapMem_enter();
HeapMem_getExtendedStats(heap, &extendedStats);
Memory_getStats(MEM_table[id], &stat);
statbuf->size = stat.totalSize;
statbuf->used = stat.totalSize - stat.totalFreeSize;
statbuf->length = stat.largestFreeSize;
statbuf->space = 1;
statbuf->base = extendedStats.buf;
HeapMem_leave(key);
return (TRUE);
}
/*
* ======== MEM_getHandle ========
*/
IHeap_Handle MEM_getHandle(Int id)
{
if ((id < 0) || ((Uns)id >= MEM_tabSize) ||
(MEM_table[id] == NULL)) {
SYS_error("MEM", SYS_EINVAL);
return (NULL);
}
return (MEM_table[id]);
}
/*
* DEV_deleteDevice deletes device(DEV_Device) entry in the OBJ table
* if device by that name exist in the system.
* This API is not reentrant
*/
Int DEV_deleteDevice (String name)
{
DEV_TableElem *objDev;
DEV_Device *entry;
IOM_Fxns *iomfxns;
Int status = SYS_OK;
Uns key;
/* Check if device exists in the Device table, if not return FALSE */
DEV_find(name, &entry);
if (entry == NULL) {
SYS_error("DEV", SYS_ENODEV);
return(SYS_ENODEV);
}
/*
* If device to be deleted is of type IOM call mdUnBindDev with
* interrupts disabled
*/
if (entry->type == DEV_IOMTYPE) {
iomfxns = (IOM_Fxns *)entry->fxns;
key = HWI_disable();
status = iomfxns->mdUnBindDev(entry->devp);
HWI_restore(key);
if (status != IOM_COMPLETED) {
SYS_error("DEV", SYS_EBADIO);
}
else {
status = SYS_OK;
}
}
/* Free Device entry in the device table */
objDev = (DEV_TableElem *)((char *)entry - sizeof(QUE_Elem));
QUE_remove(objDev);
MEM_free(0, objDev, sizeof(DEV_TableElem));
return(status);
}
int8_t MIDI_init(void)
{
#ifdef QSID_RPI
return MIDI_RPi_MIDI_init();
#else
SYS_error("no MIDI driver compiled in.");
return -1;
#endif
}
/*
* ======== MEM_getBaseAddress ========
*/
Ptr MEM_getBaseAddress(Int id)
{
HeapMem_ExtendedStats stats;
if ((id < 0) || ((Uns)id >= MEM_tabSize) ||
(MEM_table[id] == NULL)) {
SYS_error("MEM", SYS_EINVAL);
return (NULL);
}
HeapMem_getExtendedStats(
HeapMem_Handle_from_xdc_runtime_IHeap(MEM_table[id]), &stats);
return (stats.buf);
}
/*
* ======== MEM_undefine ========
*/
Void MEM_undefine(Int id)
{
HeapMem_Handle heap;
/* Make sure the id is valid */
if ( (id < 0) || ((Uns)id >= MEM_tabSize) ||
(MEM_table[id] == NULL)) {
SYS_error("MEM", SYS_EINVAL);
return;
}
heap = HeapMem_Handle_from_xdc_runtime_IHeap(MEM_table[id]);
HeapMem_delete(&heap);
MEM_table[id] = NULL;
}
/*
* ======== GIO_new ========
*/
GIO_Handle GIO_new(GIO_Handle gioChan, String name, Int mode, Int *status, Ptr optArgs,
IOM_Packet packetBuf[], Ptr syncObject, GIO_Attrs *attrs)
{
DEV_Device *entry;
Int i;
Int tmpStat;
if (attrs == NULL) {
attrs = &GIO_ATTRS;
}
/*
* status param is used to pass additional device status back to caller.
*/
if (status == NULL) {
status = &tmpStat; /* no longer need to check if status valid ptr */
}
*status = IOM_COMPLETED;
/*
* Find device structure in device table for device with name 'name'.
* DEV_match() returns the remaining name string for use by the
* mini-driver's create() function.
*/
name = DEV_match(name, &entry);
if (entry == NULL) {
SYS_error(name, SYS_ENODEV); /* sys error - no device found */
return (NULL);
}
if (entry->type != DEV_IOMTYPE) {
SYS_error("IOM", SYS_EINVAL); /* sys error - invalid device parameter */
return (NULL);
}
/* initialize queue structures */
QUE_new(&gioChan->freeList);
/* zero out the packet buffers */
memset(packetBuf, 0, attrs->nPackets * sizeof(IOM_Packet));
/* Put packets into freeList. */
for (i=0; i < attrs->nPackets; i++) {
QUE_put(&gioChan->freeList, &packetBuf[i]);
}
/*
* Plug semaphore or other synchronization object. 'gioChan->syncObj' is
* used to wait for I/O to complete when GIO_submit() is called with
* NULL *appCallback parameter.
*/
gioChan->syncObj = syncObject;
gioChan->fxns = (IOM_Fxns *)entry->fxns;
gioChan->mode = mode;
gioChan->timeout = attrs->timeout;
*status = gioChan->fxns->mdCreateChan(&gioChan->mdChan, entry->devp,
name, mode, optArgs, _GIO_iomCallback, gioChan);
if (gioChan->mdChan == NULL) {
return (NULL);
}
return (gioChan);
}
/*
* ======== GIO_create ========
*/
GIO_Handle GIO_create(String name, Int mode, Int *status, Ptr optArgs, \
GIO_Attrs *attrs)
{
GIO_Handle gioChan;
IOM_Packet *packet;
DEV_Device *entry;
Int i;
Int tmpStat;
if (attrs == NULL) {
attrs = &GIO_ATTRS;
}
/*
* status param is used to pass additional device status back to caller.
*/
if (status == NULL) {
status = &tmpStat; /* no longer need to check if status valid ptr */
}
*status = IOM_COMPLETED;
/*
* Find device structure in device table for device with name 'name'.
* DEV_match() returns the remaining name string for use by the
* mini-driver's create() function.
*/
name = DEV_match(name, &entry);
if (entry == NULL) {
SYS_error(name, SYS_ENODEV); /* sys error - no device found */
return (NULL);
}
if (entry->type != DEV_IOMTYPE) {
SYS_error("IOM", SYS_EINVAL); /* sys error - invalid device parameter */
return (NULL);
}
/* allocate and 0-fill IOM object */
gioChan = MEM_calloc(0, sizeof(GIO_Obj), 0);
if (gioChan == NULL) {
*status = IOM_EALLOC;
return (NULL);
}
/* initialize queue structures */
QUE_new(&gioChan->freeList);
/*
* Allocate packets for asynch I/O.
*/
for (i=0; i < attrs->nPackets; i++) {
packet = _GIO_mkPacket();
if (packet == NULL) {
*status = IOM_EALLOC;
GIO_delete(gioChan);
return (NULL);
}
QUE_put(&gioChan->freeList, packet);
}
/*
* Create semaphore or other synchronization object. 'gioChan->syncObj' is
* used to wait for I/O to complete when GIO_submit() is called with
* NULL *appCallback parameter.
*/
gioChan->syncObj = GIO->SEMCREATE(0, NULL);
if (gioChan->syncObj == NULL) {
*status = IOM_EALLOC;
GIO_delete(gioChan);
return (NULL);
}
gioChan->fxns = (IOM_Fxns *)entry->fxns;
gioChan->mode = mode;
gioChan->timeout = attrs->timeout;
*status = gioChan->fxns->mdCreateChan(&gioChan->mdChan, entry->devp,
name, mode, optArgs, _GIO_iomCallback, gioChan);
if (gioChan->mdChan == NULL) {
GIO_delete(gioChan);
return (NULL);
}
return (gioChan);
}
/*
* DEV_createDevice creates device(DEV_Device) entry in the OBJ table
* if device by that name do not exist in the system.
* This API is not reentrant
*/
Int DEV_createDevice (String name, Void *fxns, Fxn initFxn,
DEV_Attrs *attrs)
{
DEV_TableElem *objDevHead = (DEV_TableElem*) &DEV_table;
DEV_TableElem *objDev, *objEntry;
DEV_Device *dptr, *entry;
IOM_Fxns *iomfxns;
Int status;
Uns key;
/*
* Crate a device entry, if not successful return
* SYS_EALLOC.
*/
objEntry = MEM_calloc(0, sizeof(DEV_TableElem), 0);
if (objEntry == NULL) {
return(SYS_EALLOC);
}
TSK_disable();
/*
* Check if device already exists in the Device table, if yes return
* SYS_EINVAL
*/
DEV_find(name, &entry);
if (entry != NULL) {
TSK_enable();
MEM_free(0, objEntry, sizeof(DEV_TableElem));
SYS_error("DEV", SYS_EINVAL);
return(SYS_EINVAL);
}
/*
* Initialize new device entry(DEV_Device) in the OBJ table with
* the parameters passed to API
*/
entry = &objEntry->device;
entry->name = name;
entry->fxns = fxns;
if (attrs == NULL) {
attrs = &DEV_ATTRS;
}
entry->devid = attrs->devid;
entry->params = attrs->params;
entry->type = attrs->type;
entry->devp = attrs->devp;
/*
* Call the Device init function if its not NULL, with interrupts
* disabled.
*/
if (initFxn != NULL) {
key = HWI_disable();
(*initFxn)();
HWI_restore(key);
}
/*
* If device created is of type IOM then call mini driver function
* mdBindDev with interrupts disabled.
*/
if (entry->type == DEV_IOMTYPE) {
iomfxns = (IOM_Fxns *) entry->fxns;
key = HWI_disable();
status = iomfxns->mdBindDev(&entry->devp, entry->devid,
entry->params);
HWI_restore(key);
if (status != IOM_COMPLETED) {
TSK_enable();
/* Delete the just created device entry in device table */
MEM_free(0, objEntry, sizeof(DEV_TableElem));
SYS_error("DEV", SYS_EBADIO);
return(status);
}
}
/*
* Device is ready for addition into OBJ_Table. Check new device
* name length against existing device name lengths. If length of
* new device is greater than one in OBJ_table, mark the location
* and insert device ahead of device whose name length is shorter
* else add it to the end.
*
* This will keep all the devices sorted in descending order, which is
* required to pass additional parameters along with device name in
* DEV_open()
*/
objDev = (DEV_TableElem *)QUE_next((Ptr)objDevHead);
while (objDev != objDevHead) {
dptr = &objDev->device;
if (strlen(name) > strlen(dptr->name)) {
break;
}
objDev = (DEV_TableElem *)QUE_next((Ptr)objDev);
}
/* Insert objEntry ahead of objDev */
QUE_insert(objDev, objEntry);
TSK_enable();
return(SYS_OK);
}
/*
* ======== DEV_ebadio ========
*/
Int DEV_ebadio(DEV_Handle device)
{
SYS_error("DEV", SYS_EBADIO);
return SYS_EBADIO;
}