/*
* ======== STRM_GetInfo ========
* Purpose:
* Retrieves information about a stream.
*/
DSP_STATUS STRM_GetInfo(struct STRM_OBJECT *hStrm,
OUT struct STRM_INFO *pStreamInfo,
u32 uStreamInfoSize)
{
struct WMD_DRV_INTERFACE *pIntfFxns;
struct CHNL_INFO chnlInfo;
DSP_STATUS status = DSP_SOK;
void *pVirtBase = NULL; /* NULL if no SM used */
DBC_Require(cRefs > 0);
DBC_Require(pStreamInfo != NULL);
DBC_Require(uStreamInfoSize >= sizeof(struct STRM_INFO));
if (uStreamInfoSize < sizeof(struct STRM_INFO)) {
/* size of users info */
status = DSP_ESIZE;
}
if (DSP_FAILED(status))
goto func_end;
pIntfFxns = hStrm->hStrmMgr->pIntfFxns;
status = (*pIntfFxns->pfnChnlGetInfo) (hStrm->hChnl, &chnlInfo);
if (DSP_FAILED(status))
goto func_end;
if (hStrm->hXlator) {
/* We have a translator */
DBC_Assert(hStrm->uSegment > 0);
CMM_XlatorInfo(hStrm->hXlator, (u8 **)&pVirtBase, 0,
hStrm->uSegment, false);
}
pStreamInfo->uSegment = hStrm->uSegment;
pStreamInfo->lMode = hStrm->lMode;
pStreamInfo->pVirtBase = pVirtBase;
pStreamInfo->pUser->uNumberBufsAllowed = hStrm->uNumBufs;
pStreamInfo->pUser->uNumberBufsInStream = chnlInfo.cIOCs +
chnlInfo.cIOReqs;
/* # of bytes transferred since last call to DSPStream_Idle() */
pStreamInfo->pUser->ulNumberBytes = chnlInfo.cPosition;
pStreamInfo->pUser->hSyncObjectHandle = chnlInfo.hEvent;
/* Determine stream state based on channel state and info */
if (chnlInfo.dwState & CHNL_STATEEOS) {
pStreamInfo->pUser->ssStreamState = STREAM_DONE;
} else {
if (chnlInfo.cIOCs > 0)
pStreamInfo->pUser->ssStreamState = STREAM_READY;
else if (chnlInfo.cIOReqs > 0)
pStreamInfo->pUser->ssStreamState = STREAM_PENDING;
else
pStreamInfo->pUser->ssStreamState = STREAM_IDLE;
}
func_end:
return status;
}
/*
* ======== STRM_Open ========
* Purpose:
* Open a stream for sending/receiving data buffers to/from a task or
* XDAIS socket node on the DSP.
*/
DSP_STATUS STRM_Open(struct NODE_OBJECT *hNode, u32 uDir, u32 uIndex,
IN struct STRM_ATTR *pAttr, OUT struct STRM_OBJECT **phStrm)
{
struct STRM_MGR *hStrmMgr;
struct WMD_DRV_INTERFACE *pIntfFxns;
u32 ulChnlId;
struct STRM_OBJECT *pStrm = NULL;
CHNL_MODE uMode;
struct CHNL_ATTRS chnlAttrs;
DSP_STATUS status = DSP_SOK;
struct CMM_OBJECT *hCmmMgr = NULL; /* Shared memory manager hndl */
#ifndef RES_CLEANUP_DISABLE
DSP_STATUS res_status = DSP_SOK;
u32 hProcess;
HANDLE pCtxt = NULL;
HANDLE hDrvObject;
HANDLE hSTRMRes;
#endif
DBC_Require(cRefs > 0);
DBC_Require(phStrm != NULL);
DBC_Require(pAttr != NULL);
GT_5trace(STRM_debugMask, GT_ENTER,
"STRM_Open: hNode: 0x%x\tuDir: 0x%x\t"
"uIndex: 0x%x\tpAttr: 0x%x\tphStrm: 0x%x\n",
hNode, uDir, uIndex, pAttr, phStrm);
*phStrm = NULL;
if (uDir != DSP_TONODE && uDir != DSP_FROMNODE) {
status = DSP_EDIRECTION;
} else {
/* Get the channel id from the node (set in NODE_Connect()) */
status = NODE_GetChannelId(hNode, uDir, uIndex, &ulChnlId);
}
if (DSP_SUCCEEDED(status))
status = NODE_GetStrmMgr(hNode, &hStrmMgr);
if (DSP_SUCCEEDED(status)) {
MEM_AllocObject(pStrm, struct STRM_OBJECT, STRM_SIGNATURE);
if (pStrm == NULL) {
status = DSP_EMEMORY;
GT_0trace(STRM_debugMask, GT_6CLASS,
"STRM_Open: MEM_AllocObject() failed!\n ");
} else {
pStrm->hStrmMgr = hStrmMgr;
pStrm->uDir = uDir;
pStrm->strmState = STREAM_IDLE;
pStrm->hUserEvent = pAttr->hUserEvent;
if (pAttr->pStreamAttrIn != NULL) {
pStrm->uTimeout = pAttr->pStreamAttrIn->
uTimeout;
pStrm->uNumBufs = pAttr->pStreamAttrIn->
uNumBufs;
pStrm->lMode = pAttr->pStreamAttrIn->lMode;
pStrm->uSegment = pAttr->pStreamAttrIn->
uSegment;
pStrm->uAlignment = pAttr->pStreamAttrIn->
uAlignment;
pStrm->uDMAChnlId = pAttr->pStreamAttrIn->
uDMAChnlId;
pStrm->uDMAPriority = pAttr->pStreamAttrIn->
uDMAPriority;
chnlAttrs.uIOReqs = pAttr->pStreamAttrIn->
uNumBufs;
} else {
pStrm->uTimeout = DEFAULTTIMEOUT;
pStrm->uNumBufs = DEFAULTNUMBUFS;
pStrm->lMode = STRMMODE_PROCCOPY;
pStrm->uSegment = 0; /* local memory */
pStrm->uAlignment = 0;
pStrm->uDMAChnlId = 0;
pStrm->uDMAPriority = 0;
chnlAttrs.uIOReqs = DEFAULTNUMBUFS;
}
chnlAttrs.hReserved1 = NULL;
/* DMA chnl flush timeout */
chnlAttrs.hReserved2 = pStrm->uTimeout;
chnlAttrs.hEvent = NULL;
if (pAttr->hUserEvent != NULL)
chnlAttrs.hEvent = pAttr->hUserEvent;
}
}
if (DSP_FAILED(status))
goto func_cont;
if ((pAttr->pVirtBase == NULL) || !(pAttr->ulVirtSize > 0))
goto func_cont;
DBC_Assert(pStrm->lMode != STRMMODE_LDMA); /* no System DMA */
/* Get the shared mem mgr for this streams dev object */
status = DEV_GetCmmMgr(hStrmMgr->hDev, &hCmmMgr);
if (DSP_FAILED(status)) {
GT_1trace(STRM_debugMask, GT_6CLASS, "STRM_Open: Failed to get "
"CMM Mgr handle: 0x%x\n", status);
} else {
/*Allocate a SM addr translator for this strm.*/
status = CMM_XlatorCreate(&pStrm->hXlator, hCmmMgr, NULL);
if (DSP_FAILED(status)) {
GT_1trace(STRM_debugMask, GT_6CLASS,
"STRM_Open: Failed to "
"create SM translator: 0x%x\n", status);
} else {
DBC_Assert(pStrm->uSegment > 0);
/* Set translators Virt Addr attributes */
status = CMM_XlatorInfo(pStrm->hXlator,
(u8 **)&pAttr->pVirtBase, pAttr->ulVirtSize,
pStrm->uSegment, true);
if (status != DSP_SOK) {
GT_0trace(STRM_debugMask, GT_6CLASS,
"STRM_Open: ERROR: "
"in setting CMM_XlatorInfo.\n");
}
}
}
func_cont:
if (DSP_SUCCEEDED(status)) {
/* Open channel */
uMode = (uDir == DSP_TONODE) ?
CHNL_MODETODSP : CHNL_MODEFROMDSP;
pIntfFxns = hStrmMgr->pIntfFxns;
status = (*pIntfFxns->pfnChnlOpen) (&(pStrm->hChnl),
hStrmMgr->hChnlMgr, uMode, ulChnlId, &chnlAttrs);
if (DSP_FAILED(status)) {
/*
* over-ride non-returnable status codes so we return
* something documented
*/
if (status != DSP_EMEMORY && status !=
DSP_EINVALIDARG && status != DSP_EFAIL) {
/*
* We got a status that's not return-able.
* Assert that we got something we were
* expecting (DSP_EHANDLE isn't acceptable,
* hStrmMgr->hChnlMgr better be valid or we
* assert here), and then return DSP_EFAIL.
*/
DBC_Assert(status == CHNL_E_OUTOFSTREAMS ||
status == CHNL_E_BADCHANID ||
status == CHNL_E_CHANBUSY ||
status == CHNL_E_NOIORPS);
status = DSP_EFAIL;
}
GT_2trace(STRM_debugMask, GT_6CLASS,
"STRM_Open: Channel open failed, "
"chnl id = %d, status = 0x%x\n", ulChnlId,
status);
}
}
if (DSP_SUCCEEDED(status))
*phStrm = pStrm;
else
(void)DeleteStrm(pStrm);
#ifndef RES_CLEANUP_DISABLE
/* Return PID instead of process handle */
hProcess = current->pid;
res_status = CFG_GetObject((u32 *)&hDrvObject, REG_DRV_OBJECT);
if (DSP_SUCCEEDED(res_status)) {
DRV_GetProcContext(hProcess,
(struct DRV_OBJECT *)hDrvObject, &pCtxt,
hNode, 0);
if (pCtxt != NULL)
DRV_ProcInsertSTRMResElement(*phStrm, &hSTRMRes, pCtxt);
}
#endif
/* ensure we return a documented error code */
DBC_Ensure((DSP_SUCCEEDED(status) &&
MEM_IsValidHandle((*phStrm), STRM_SIGNATURE)) ||
(*phStrm == NULL && (status == DSP_EHANDLE ||
status == DSP_EDIRECTION || status == DSP_EVALUE ||
status == DSP_EFAIL)));
return status;
}
