/*
* ======== STRM_FreeBuffer ========
* Purpose:
* Frees the buffers allocated for a stream.
*/
DSP_STATUS STRM_FreeBuffer(struct STRM_OBJECT *hStrm, u8 **apBuffer,
u32 uNumBufs, struct PROCESS_CONTEXT *pr_ctxt)
{
DSP_STATUS status = DSP_SOK;
u32 i = 0;
HANDLE hSTRMRes = NULL;
DBC_Require(cRefs > 0);
DBC_Require(apBuffer != NULL);
for (i = 0; i < uNumBufs; i++) {
DBC_Assert(hStrm->hXlator != NULL);
status = CMM_XlatorFreeBuf(hStrm->hXlator, apBuffer[i]);
if (DSP_FAILED(status))
break;
apBuffer[i] = NULL;
}
if (DSP_SUCCEEDED(status)) {
if (DRV_GetSTRMResElement(hStrm, hSTRMRes, pr_ctxt) !=
DSP_ENOTFOUND)
DRV_ProcUpdateSTRMRes(uNumBufs-i, hSTRMRes);
}
return status;
}
/*
* ======== STRM_FreeBuffer ========
* Purpose:
* Frees the buffers allocated for a stream.
*/
DSP_STATUS STRM_FreeBuffer(struct STRM_OBJECT *hStrm, u8 **apBuffer,
u32 uNumBufs)
{
DSP_STATUS status = DSP_SOK;
u32 i = 0;
#ifndef RES_CLEANUP_DISABLE
DSP_STATUS res_status = DSP_SOK;
u32 hProcess;
HANDLE pCtxt = NULL;
HANDLE hDrvObject;
HANDLE hSTRMRes = NULL;
#endif
DBC_Require(cRefs > 0);
DBC_Require(apBuffer != NULL);
GT_3trace(STRM_debugMask, GT_ENTER, "STRM_FreeBuffer: hStrm: 0x%x\t"
"apBuffer: 0x%x\tuNumBufs: 0x%x\n", hStrm, apBuffer, uNumBufs);
if (!MEM_IsValidHandle(hStrm, STRM_SIGNATURE))
status = DSP_EHANDLE;
if (DSP_SUCCEEDED(status)) {
for (i = 0; i < uNumBufs; i++) {
DBC_Assert(hStrm->hXlator != NULL);
status = CMM_XlatorFreeBuf(hStrm->hXlator, apBuffer[i]);
if (DSP_FAILED(status)) {
GT_0trace(STRM_debugMask, GT_7CLASS,
"STRM_FreeBuffer: DSP_FAILED"
" to free shared memory.\n");
break;
}
apBuffer[i] = NULL;
}
}
#ifndef RES_CLEANUP_DISABLE
/* Update the node and stream resource status */
/* 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,
NULL, 0);
if (pCtxt != NULL) {
if (DRV_GetSTRMResElement(hStrm, hSTRMRes, pCtxt) !=
DSP_ENOTFOUND) {
DRV_ProcUpdateSTRMRes(uNumBufs-i, hSTRMRes,
pCtxt);
}
}
}
#endif
return status;
}
/*
* ======== STRM_AllocateBuffer ========
* Purpose:
* Allocates buffers for a stream.
*/
DSP_STATUS STRM_AllocateBuffer(struct STRM_OBJECT *hStrm, u32 uSize,
OUT u8 **apBuffer, u32 uNumBufs,
struct PROCESS_CONTEXT *pr_ctxt)
{
DSP_STATUS status = DSP_SOK;
u32 uAllocated = 0;
u32 i;
HANDLE hSTRMRes;
DBC_Require(cRefs > 0);
DBC_Require(apBuffer != NULL);
/*
* Allocate from segment specified at time of stream open.
*/
if (uSize == 0)
status = DSP_ESIZE;
if (DSP_FAILED(status))
goto func_end;
for (i = 0; i < uNumBufs; i++) {
DBC_Assert(hStrm->hXlator != NULL);
(void)CMM_XlatorAllocBuf(hStrm->hXlator, &apBuffer[i], uSize);
if (apBuffer[i] == NULL) {
status = DSP_EMEMORY;
uAllocated = i;
break;
}
}
if (DSP_FAILED(status))
STRM_FreeBuffer(hStrm, apBuffer, uAllocated, pr_ctxt);
if (DSP_FAILED(status))
goto func_end;
if (DRV_GetSTRMResElement(hStrm, &hSTRMRes, pr_ctxt) !=
DSP_ENOTFOUND)
DRV_ProcUpdateSTRMRes(uNumBufs, hSTRMRes);
func_end:
return status;
}
/*
* ======== STRM_Close ========
* Purpose:
* Close a stream opened with STRM_Open().
*/
DSP_STATUS STRM_Close(struct STRM_OBJECT *hStrm,
struct PROCESS_CONTEXT *pr_ctxt)
{
struct WMD_DRV_INTERFACE *pIntfFxns;
struct CHNL_INFO chnlInfo;
DSP_STATUS status = DSP_SOK;
HANDLE hSTRMRes;
DBC_Require(cRefs > 0);
GT_1trace(STRM_debugMask, GT_ENTER, "STRM_Close: hStrm: 0x%x\n", hStrm);
/* Have all buffers been reclaimed? If not, return
* DSP_EPENDING */
pIntfFxns = hStrm->hStrmMgr->pIntfFxns;
status = (*pIntfFxns->pfnChnlGetInfo) (hStrm->hChnl, &chnlInfo);
DBC_Assert(DSP_SUCCEEDED(status));
if (chnlInfo.cIOCs > 0 || chnlInfo.cIOReqs > 0)
status = DSP_EPENDING;
else
status = DeleteStrm(hStrm);
if (DSP_FAILED(status))
goto func_end;
if (DRV_GetSTRMResElement(hStrm, &hSTRMRes, pr_ctxt) !=
DSP_ENOTFOUND)
DRV_ProcRemoveSTRMResElement(hSTRMRes, pr_ctxt);
func_end:
DBC_Ensure(status == DSP_SOK || status == DSP_EHANDLE ||
status == DSP_EPENDING || status == DSP_EFAIL);
return status;
}
/*
* ======== STRM_Close ========
* Purpose:
* Close a stream opened with STRM_Open().
*/
DSP_STATUS STRM_Close(struct STRM_OBJECT *hStrm)
{
struct WMD_DRV_INTERFACE *pIntfFxns;
struct CHNL_INFO chnlInfo;
DSP_STATUS status = DSP_SOK;
#ifndef RES_CLEANUP_DISABLE
u32 hProcess;
HANDLE pCtxt = NULL;
HANDLE hDrvObject;
HANDLE hSTRMRes;
DSP_STATUS res_status = DSP_SOK;
#endif
DBC_Require(cRefs > 0);
GT_1trace(STRM_debugMask, GT_ENTER, "STRM_Close: hStrm: 0x%x\n", hStrm);
if (!MEM_IsValidHandle(hStrm, STRM_SIGNATURE)) {
status = DSP_EHANDLE;
} else {
/* Have all buffers been reclaimed? If not, return
* DSP_EPENDING */
pIntfFxns = hStrm->hStrmMgr->pIntfFxns;
status = (*pIntfFxns->pfnChnlGetInfo) (hStrm->hChnl, &chnlInfo);
DBC_Assert(DSP_SUCCEEDED(status));
if (chnlInfo.cIOCs > 0 || chnlInfo.cIOReqs > 0) {
status = DSP_EPENDING;
} else {
status = DeleteStrm(hStrm);
if (DSP_FAILED(status)) {
/* we already validated the handle. */
DBC_Assert(status != DSP_EHANDLE);
/* make sure we return a documented result */
status = DSP_EFAIL;
}
}
}
#ifndef RES_CLEANUP_DISABLE
if (DSP_FAILED(status))
goto func_end;
/* Update the node and stream resource status */
/* Return PID instead of process handle */
hProcess = current->pid;
res_status = CFG_GetObject((u32 *)&hDrvObject, REG_DRV_OBJECT);
if (DSP_FAILED(res_status))
goto func_end;
DRV_GetProcContext(hProcess, (struct DRV_OBJECT *)hDrvObject,
&pCtxt, NULL, 0);
if (pCtxt != NULL) {
if (DRV_GetSTRMResElement(hStrm, &hSTRMRes, pCtxt) !=
DSP_ENOTFOUND) {
DRV_ProcRemoveSTRMResElement(hSTRMRes, pCtxt);
}
}
func_end:
#endif
DBC_Ensure(status == DSP_SOK || status == DSP_EHANDLE ||
status == DSP_EPENDING || status == DSP_EFAIL);
return status;
}
/*
* ======== STRM_AllocateBuffer ========
* Purpose:
* Allocates buffers for a stream.
*/
DSP_STATUS STRM_AllocateBuffer(struct STRM_OBJECT *hStrm, u32 uSize,
OUT u8 **apBuffer, u32 uNumBufs)
{
DSP_STATUS status = DSP_SOK;
u32 uAllocated = 0;
u32 i;
#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(apBuffer != NULL);
GT_4trace(STRM_debugMask, GT_ENTER, "STRM_AllocateBuffer: hStrm: 0x%x\t"
"uSize: 0x%x\tapBuffer: 0x%x\tuNumBufs: 0x%x\n",
hStrm, uSize, apBuffer, uNumBufs);
if (MEM_IsValidHandle(hStrm, STRM_SIGNATURE)) {
/*
* Allocate from segment specified at time of stream open.
*/
if (uSize == 0)
status = DSP_ESIZE;
}
if (DSP_FAILED(status)) {
status = DSP_EHANDLE;
goto func_end;
}
for (i = 0; i < uNumBufs; i++) {
DBC_Assert(hStrm->hXlator != NULL);
(void)CMM_XlatorAllocBuf(hStrm->hXlator, &apBuffer[i], uSize);
if (apBuffer[i] == NULL) {
GT_0trace(STRM_debugMask, GT_7CLASS,
"STRM_AllocateBuffer: "
"DSP_FAILED to alloc shared memory.\n");
status = DSP_EMEMORY;
uAllocated = i;
break;
}
}
if (DSP_FAILED(status))
STRM_FreeBuffer(hStrm, apBuffer, uAllocated);
#ifndef RES_CLEANUP_DISABLE
if (DSP_FAILED(status))
goto func_end;
/* Return PID instead of process handle */
hProcess = current->pid;
res_status = CFG_GetObject((u32 *)&hDrvObject, REG_DRV_OBJECT);
if (DSP_FAILED(res_status))
goto func_end;
DRV_GetProcContext(hProcess, (struct DRV_OBJECT *)hDrvObject,
&pCtxt, NULL, 0);
if (pCtxt != NULL) {
if (DRV_GetSTRMResElement(hStrm, &hSTRMRes, pCtxt) !=
DSP_ENOTFOUND) {
DRV_ProcUpdateSTRMRes(uNumBufs, hSTRMRes, pCtxt);
}
}
#endif
func_end:
return status;
}
