/**Load the context for a channel to SDMA
*
* <b>Algorithm:</b>\n
* - Send context and poll for answer.
*
* @param *cd_p channel descriptor for channel 0
* @param *buf pointer to context data
* @param channel channel to place the context for
*
* @return none
*/
void
iapi_lowSetContext(channelDescriptor *cd_p, void *buf, unsigned char channel)
{
bufferDescriptor *local_bd_p;
#ifdef SDMA_SKYE
unsigned char command = 0;
local_bd_p =
(bufferDescriptor *) iapi_Phys2Virt(cd_p->ccb_ptr->baseBDptr);
command = channel << 3;
command = command | C0_SETCTX;
iapi_SetBufferDescriptor(&local_bd_p[0],
command,
(unsigned char)(BD_DONE | BD_INTR | BD_WRAP),
(unsigned short)(sizeof(contextData) / 4),
buf, NULL);
#else
local_bd_p =
(bufferDescriptor *) iapi_Phys2Virt(cd_p->ccb_ptr->baseBDptr);
iapi_SetBufferDescriptor(&local_bd_p[0],
C0_SETDM,
(unsigned char)(BD_DONE | BD_INTR | BD_WRAP |
BD_EXTD),
(unsigned short)(sizeof(contextData) / 4), buf,
(void *)(2048 +
(sizeof(contextData) / 4) * channel));
#endif
/* Send */
iapi_lowStartChannel(cd_p->channelNumber);
iapi_lowSynchChannel(cd_p->channelNumber);
}
/**Load a SDMA script to SDMA
*
* <b>Algorithm:</b>\n
* - Setup BD with appropiate parameters (C0_SETPM)
* - Start channel
* - Poll for answer
*
* <b>Notes</b>\b
* - Parameter "size" is in bytes, it represents the size of "buf", e.g.
* the size in bytes of the script to be uploaded.
* - Parameter "address" denotes the RAM address for the script in SDMA
*
* @param *cd_p channel descriptor for channel 0
* @param *buf pointer to the script
* @param size size of the script, in bytes
* @param address address in SDMA RAM to place the script
*
* @return none
*/
void
iapi_lowSetScript(channelDescriptor *cd_p, void *buf, unsigned short size,
unsigned long address)
{
bufferDescriptor *bd_p;
bd_p = (bufferDescriptor *) iapi_Phys2Virt(cd_p->ccb_ptr->baseBDptr);
/*Setup buffer descriptor with channel 0 command */
iapi_SetBufferDescriptor(&bd_p[0], C0_SETPM, (unsigned char)(BD_DONE | BD_INTR | BD_WRAP | BD_EXTD), (unsigned short)size / 2, /*count in shorts */
buf, (void *)(address));
/* Receive, polling method */
iapi_lowStartChannel(cd_p->channelNumber);
iapi_lowSynchChannel(cd_p->channelNumber);
}
/**Load the context data of a channel from SDMA
*
* <b>Algorithm:</b>\n
* - Setup BD with appropiate parameters
* - Start channel
* - Poll for answer
*
* @param *cd_p channel descriptor for channel 0
* @param *buf pointer to receive context data
* @param channel channel for which the context data is requested
*
* @return none
*/
void
iapi_lowGetContext(channelDescriptor * cd_p, void * buf, unsigned char channel)
{
bufferDescriptor * bd_p;
bd_p = (bufferDescriptor *)iapi_Phys2Virt(cd_p->ccb_ptr->baseBDptr);
/*Setup buffer descriptor with channel 0 command*/
iapi_SetBufferDescriptor(&bd_p[0],
C0_GETDM,
(unsigned char)(BD_DONE | BD_INTR | BD_WRAP | BD_EXTD),
(unsigned short)sizeof(contextData)/4,
buf,
(void *)(CHANNEL_CONTEXT_BASE_ADDRESS + (sizeof(contextData)*channel/4)));
/* Receive, polling method*/
iapi_lowStartChannel(cd_p->channelNumber);
iapi_lowSynchChannel(cd_p->channelNumber);
}
/**Load the context for a channel to SDMA
*
* <b>Algorithm:</b>\n
* - Send context and poll for answer.
*
* @param *cd_p channel descriptor for channel 0
* @param *buf pointer to context data
* @param channel channel to place the context for
*
* @return none
*/
void
iapi_lowSetContext(channelDescriptor * cd_p, void * buf, unsigned char channel)
{
bufferDescriptor * local_bd_p;
local_bd_p = (bufferDescriptor *)iapi_Phys2Virt(cd_p->ccb_ptr->baseBDptr);
iapi_SetBufferDescriptor( &local_bd_p[0],
C0_SETDM,
(unsigned char)(BD_DONE | BD_INTR | BD_WRAP|BD_EXTD),
(unsigned short)(sizeof(contextData)/4),
buf,
(void *)(2048+(sizeof(contextData)/4)*channel));
/* Send */
iapi_lowStartChannel( cd_p->channelNumber );
iapi_lowSynchChannel( cd_p->channelNumber );
}
/**Changes channel description information after performing sanity checks.
*
* <b>Algorithm:</b>\n
* - Check channel properties.
* - Then modifies the properties of the channel description.
*
* @param *cd_p channel descriptor of the channel to change
* @param whatToChange control code indicating the desired change
* @param newval new value
*
* @return
* - IAPI_SUCCESS
* - IAPI_FAILURE if change failed
*
*/
int
iapi_ChangeChannelDesc(channelDescriptor *cd_p, unsigned char whatToChange,
unsigned long newval)
{
bufferDescriptor *tmpBDptr;
unsigned char index = 0;
int result = IAPI_SUCCESS;
/* verify parameter validity */
if (cd_p == NULL) {
result = IAPI_ERR_CD_UNINITIALIZED;
iapi_errno = result;
return -result;
}
/* verify channel descriptor initialization */
if (cd_p->ccb_ptr == NULL) {
result = IAPI_ERR_CCB_UNINITIALIZED | IAPI_ERR_CH_AVAILABLE |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
/* verify channel is not in use */
tmpBDptr =
(bufferDescriptor *) iapi_Phys2Virt(cd_p->ccb_ptr->baseBDptr);
for (index = cd_p->bufferDescNumber; index > 0; index--) {
if (tmpBDptr->mode.status & BD_DONE) {
result = IAPI_ERR_CH_IN_USE | IAPI_ERR_CH_AVAILABLE |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
tmpBDptr++;
}
/* Select the change accorded to the selector given in parameter */
switch (whatToChange) {
/*
* Channel Number
*/
case IAPI_CHANNELNUMBER:
/* Channel number can not be changed (description remains attached) */
result = IAPI_ERR_CD_CHANGE_CH_NUMBER | IAPI_ERR_CH_AVAILABLE |
cd_p->channelNumber;
iapi_errno = result;
return -result;
/*
* Buffer Descriptor Number
*/
case IAPI_BUFFERDESCNUMBER:
if (newval < MAX_BD_NUM) {
if (newval != cd_p->bufferDescNumber) {
/* Free memory used for previous old data */
if (cd_p->ccb_ptr->baseBDptr != NULL) {
tmpBDptr = (bufferDescriptor *)
iapi_Phys2Virt(cd_p->
ccb_ptr->baseBDptr);
for (index = 0;
index < cd_p->bufferDescNumber;
index++) {
if (tmpBDptr->bufferAddr !=
NULL) {
if (cd_p->trust ==
FALSE) {
FREE(iapi_Phys2Virt(tmpBDptr->bufferAddr));
}
}
tmpBDptr++;
}
FREE((bufferDescriptor *)
iapi_Phys2Virt((cd_p->
ccb_ptr)->baseBDptr));
}
(cd_p->ccb_ptr)->baseBDptr = NULL;
(cd_p->ccb_ptr)->currentBDptr = NULL;
/* Allocate and initialize structures */
cd_p->bufferDescNumber = (unsigned char)newval;
cd_p->ccb_ptr->status.openedInit = FALSE;
if (IAPI_SUCCESS !=
iapi_InitializeMemory(cd_p->ccb_ptr)) {
result =
IAPI_ERR_BD_ALLOCATION |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
cd_p->ccb_ptr->status.openedInit = TRUE;
}
break;
} else {
result =
IAPI_ERR_INVALID_PARAMETER | IAPI_ERR_CH_AVAILABLE |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
/*
* Buffer size
*/
case IAPI_BUFFERSIZE:
if (newval < MAX_BD_SIZE) {
if (newval != cd_p->bufferSize) {
/* Free memory used for previous old data */
if (cd_p->ccb_ptr->baseBDptr != NULL) {
tmpBDptr = (bufferDescriptor *)
iapi_Phys2Virt(cd_p->
ccb_ptr->baseBDptr);
for (index = 0;
index < cd_p->bufferDescNumber;
index++) {
if (cd_p->trust == FALSE) {
FREE(iapi_Phys2Virt
(tmpBDptr->bufferAddr));
}
tmpBDptr++;
}
FREE((bufferDescriptor *)
iapi_Phys2Virt((cd_p->
ccb_ptr)->baseBDptr));
}
(cd_p->ccb_ptr)->baseBDptr = NULL;
(cd_p->ccb_ptr)->currentBDptr = NULL;
/* Allocate and initialize structures */
cd_p->bufferSize = (unsigned short)newval;
cd_p->ccb_ptr->status.openedInit = FALSE;
if (IAPI_SUCCESS !=
iapi_InitializeMemory(cd_p->ccb_ptr)) {
result =
IAPI_ERR_BD_ALLOCATION |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
cd_p->ccb_ptr->status.openedInit = TRUE;
}
break;
} else {
result =
IAPI_ERR_INVALID_PARAMETER | IAPI_ERR_CH_AVAILABLE |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
/*
* Blocking / non blocking feature
*/
case IAPI_BLOCKING:
if (newval < MAX_BLOCKING) {
cd_p->blocking = newval;
break;
} else {
result =
IAPI_ERR_INVALID_PARAMETER | IAPI_ERR_CH_AVAILABLE |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
/*
* Synchronization method
*/
case IAPI_CALLBACKSYNCH:
if (newval < MAX_SYNCH) {
cd_p->callbackSynch = newval;
iapi_ChangeCallbackISR(cd_p, cd_p->callbackISR_ptr);
break;
} else {
result =
IAPI_ERR_INVALID_PARAMETER | IAPI_ERR_CH_AVAILABLE |
cd_p->channelNumber;
iapi_errno = result;
return -result;
}
/*
* Ownership of the channel
*/
case IAPI_OWNERSHIP:
#ifdef DSP
result = IAPI_ERR_NOT_ALLOWED | cd_p->channelNumber;
iapi_errno = result;
return -result;
#endif /* DSP */
#ifdef MCU
if (newval < MAX_OWNERSHIP) {
cd_p->ownership = newval;
iapi_ChannelConfig(cd_p->channelNumber,
(newval >> CH_OWNSHP_OFFSET_EVT) & 1,
(newval >> CH_OWNSHP_OFFSET_MCU) & 1,
(newval >> CH_OWNSHP_OFFSET_DSP) &
1);
break;
} else {