static DECLCALLBACK(VOID) vboxMpCrShgsmiTransportSendReadAsyncCompletion(PVBOXMP_DEVEXT pDevExt, PVBOXVDMADDI_CMD pDdiCmd,
PVOID pvContext)
{
RT_NOREF(pDevExt);
/* we should be called from our DPC routine */
Assert(KeGetCurrentIrql() == DISPATCH_LEVEL);
PVBOXMP_CRSHGSMITRANSPORT pCon = (PVBOXMP_CRSHGSMITRANSPORT)pvContext;
PVBOXVDMACBUF_DR pDr = VBOXVDMACBUF_DR_FROM_DDI_CMD(pDdiCmd);
VBOXVDMACMD RT_UNTRUSTED_VOLATILE_HOST *pHdr = VBOXVDMACBUF_DR_TAIL(pDr, VBOXVDMACMD);
VBOXVDMACMD_CHROMIUM_CMD RT_UNTRUSTED_VOLATILE_HOST *pBody = VBOXMP_CRSHGSMICON_DR_GET_CRCMD(pHdr);
const UINT cBuffers = 2;
Assert(pBody->cBuffers == cBuffers);
VBOXMP_CRHGSMICMD_READ RT_UNTRUSTED_VOLATILE_HOST *pWrData = VBOXMP_CRSHGSMICON_DR_GET_CMDBUF(pHdr, cBuffers, VBOXMP_CRHGSMICMD_READ);
CRVBOXHGSMIREAD RT_UNTRUSTED_VOLATILE_HOST *pCmd = &pWrData->Cmd;
VBOXVDMACMD_CHROMIUM_BUFFER RT_UNTRUSTED_VOLATILE_HOST *pBufCmd = &pBody->aBuffers[0];
Assert(pBufCmd->cbBuffer == sizeof (CRVBOXHGSMIREAD));
CRVBOXHGSMIREAD RT_UNTRUSTED_VOLATILE_HOST *pWr = (CRVBOXHGSMIREAD*)vboxMpCrShgsmiTransportBufFromOffset(pCon, pBufCmd->offBuffer);
PFNVBOXMP_CRSHGSMITRANSPORT_SENDREADASYNC_COMPLETION pfnCompletion = (PFNVBOXMP_CRSHGSMITRANSPORT_SENDREADASYNC_COMPLETION)pBufCmd->u64GuestData;
VBOXVDMACMD_CHROMIUM_BUFFER RT_UNTRUSTED_VOLATILE_HOST *pRxBuf = &pBody->aBuffers[1];
VBOXMP_CRSHGSMICON_BUFDR *pWbDr = (PVBOXMP_CRSHGSMICON_BUFDR)pRxBuf->u64GuestData;
void RT_UNTRUSTED_VOLATILE_HOST *pvRx = NULL;
uint32_t cbRx = 0;
int rc = pDr->rc;
if (RT_SUCCESS(rc))
{
rc = pWr->hdr.result;
if (RT_SUCCESS(rc))
{
cbRx = pCmd->cbBuffer;
if (cbRx)
pvRx = pWbDr->pvBuf;
}
else
{
WARN(("CRVBOXHGSMIREAD failed, rc %d", rc));
}
}
else
{
WARN(("dma command buffer failed rc %d!", rc));
}
if (pfnCompletion)
{
void RT_UNTRUSTED_VOLATILE_HOST *pvCtx = VBOXMP_CRSHGSMICON_DR_GET_CMDCTX(pHdr, cBuffers,
sizeof(VBOXMP_CRHGSMICMD_READ), void);
pfnCompletion(pCon, rc, pvRx, cbRx, pvCtx);
}
vboxMpCrShgsmiBufCacheFree(pCon, &pCon->WbDrCache, pWbDr);
}
static PVBOXMP_CRSHGSMICON_BUFDR vboxMpCrShgsmiBufCacheAlloc(PVBOXMP_CRSHGSMITRANSPORT pCon, PVBOXMP_CRSHGSMICON_BUFDR_CACHE pCache, uint32_t cbBuffer)
{
PVBOXMP_CRSHGSMICON_BUFDR pBufDr = vboxMpCrShgsmiBufCacheGetAllocDr(pCache);
int rc = vboxMpCrShgsmiBufCacheBufReinit(pCon, pCache, pBufDr, cbBuffer);
if (RT_SUCCESS(rc))
return pBufDr;
WARN(("vboxMpCrShgsmiBufCacheBufReinit failed, rc %d", rc));
vboxMpCrShgsmiBufCacheFree(pCon, pCache, pBufDr);
return NULL;
}
static void vboxMpCrShgsmiBufCacheTerm(PVBOXMP_CRSHGSMITRANSPORT pCon, PVBOXMP_CRSHGSMICON_BUFDR_CACHE pCache)
{
if (pCache->pBufDr)
vboxMpCrShgsmiBufCacheFree(pCon, pCache, pCache->pBufDr);
}
