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Diffstat (limited to 'src/VBox/Devices/Storage/VSCSI/VSCSIIoReq.cpp')
-rw-r--r--src/VBox/Devices/Storage/VSCSI/VSCSIIoReq.cpp267
1 files changed, 267 insertions, 0 deletions
diff --git a/src/VBox/Devices/Storage/VSCSI/VSCSIIoReq.cpp b/src/VBox/Devices/Storage/VSCSI/VSCSIIoReq.cpp
new file mode 100644
index 00000000..974b3228
--- /dev/null
+++ b/src/VBox/Devices/Storage/VSCSI/VSCSIIoReq.cpp
@@ -0,0 +1,267 @@
+/* $Id: VSCSIIoReq.cpp $ */
+/** @file
+ * Virtual SCSI driver: I/O request handling.
+ */
+
+/*
+ * Copyright (C) 2006-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+#define LOG_GROUP LOG_GROUP_VSCSI
+#include <VBox/log.h>
+#include <iprt/errcore.h>
+#include <VBox/types.h>
+#include <VBox/vscsi.h>
+#include <iprt/assert.h>
+#include <iprt/mem.h>
+#include <iprt/asm.h>
+
+#include "VSCSIInternal.h"
+
+int vscsiIoReqInit(PVSCSILUNINT pVScsiLun)
+{
+ return vscsiLunReqAllocSizeSet(pVScsiLun, sizeof(VSCSIIOREQINT));
+}
+
+int vscsiIoReqFlushEnqueue(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq)
+{
+ int rc = VINF_SUCCESS;
+ PVSCSIIOREQINT pVScsiIoReq = NULL;
+
+ rc = vscsiLunReqAlloc(pVScsiLun, (uintptr_t)pVScsiReq, &pVScsiIoReq);
+ if (RT_SUCCESS(rc))
+ {
+ pVScsiIoReq->pVScsiReq = pVScsiReq;
+ pVScsiIoReq->pVScsiLun = pVScsiLun;
+ pVScsiIoReq->enmTxDir = VSCSIIOREQTXDIR_FLUSH;
+
+ ASMAtomicIncU32(&pVScsiLun->IoReq.cReqOutstanding);
+
+ rc = vscsiLunReqTransferEnqueue(pVScsiLun, pVScsiIoReq);
+ if (RT_FAILURE(rc))
+ {
+ ASMAtomicDecU32(&pVScsiLun->IoReq.cReqOutstanding);
+ vscsiLunReqFree(pVScsiLun, pVScsiIoReq);
+ }
+ }
+
+ return rc;
+}
+
+
+int vscsiIoReqTransferEnqueue(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq,
+ VSCSIIOREQTXDIR enmTxDir, uint64_t uOffset,
+ size_t cbTransfer)
+{
+ int rc = VINF_SUCCESS;
+ PVSCSIIOREQINT pVScsiIoReq = NULL;
+
+ LogFlowFunc(("pVScsiLun=%#p pVScsiReq=%#p enmTxDir=%u uOffset=%llu cbTransfer=%u\n",
+ pVScsiLun, pVScsiReq, enmTxDir, uOffset, cbTransfer));
+
+ rc = vscsiLunReqAlloc(pVScsiLun, (uintptr_t)pVScsiReq, &pVScsiIoReq);
+ if (RT_SUCCESS(rc))
+ {
+ pVScsiIoReq->pVScsiReq = pVScsiReq;
+ pVScsiIoReq->pVScsiLun = pVScsiLun;
+ pVScsiIoReq->enmTxDir = enmTxDir;
+ pVScsiIoReq->u.Io.uOffset = uOffset;
+ pVScsiIoReq->u.Io.cbTransfer = cbTransfer;
+ pVScsiIoReq->u.Io.paSeg = pVScsiReq->SgBuf.paSegs;
+ pVScsiIoReq->u.Io.cSeg = pVScsiReq->SgBuf.cSegs;
+
+ ASMAtomicIncU32(&pVScsiLun->IoReq.cReqOutstanding);
+
+ rc = vscsiLunReqTransferEnqueue(pVScsiLun, pVScsiIoReq);
+ if (RT_FAILURE(rc))
+ {
+ ASMAtomicDecU32(&pVScsiLun->IoReq.cReqOutstanding);
+ vscsiLunReqFree(pVScsiLun, pVScsiIoReq);
+ }
+ }
+
+ return rc;
+}
+
+
+int vscsiIoReqTransferEnqueueEx(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq,
+ VSCSIIOREQTXDIR enmTxDir, uint64_t uOffset,
+ PCRTSGSEG paSegs, unsigned cSegs, size_t cbTransfer)
+{
+ int rc = VINF_SUCCESS;
+ PVSCSIIOREQINT pVScsiIoReq = NULL;
+
+ LogFlowFunc(("pVScsiLun=%#p pVScsiReq=%#p enmTxDir=%u uOffset=%llu cbTransfer=%u\n",
+ pVScsiLun, pVScsiReq, enmTxDir, uOffset, cbTransfer));
+
+ rc = vscsiLunReqAlloc(pVScsiLun, (uintptr_t)pVScsiReq, &pVScsiIoReq);
+ if (RT_SUCCESS(rc))
+ {
+ pVScsiIoReq->pVScsiReq = pVScsiReq;
+ pVScsiIoReq->pVScsiLun = pVScsiLun;
+ pVScsiIoReq->enmTxDir = enmTxDir;
+ pVScsiIoReq->u.Io.uOffset = uOffset;
+ pVScsiIoReq->u.Io.cbTransfer = cbTransfer;
+ pVScsiIoReq->u.Io.paSeg = paSegs;
+ pVScsiIoReq->u.Io.cSeg = cSegs;
+
+ ASMAtomicIncU32(&pVScsiLun->IoReq.cReqOutstanding);
+
+ rc = vscsiLunReqTransferEnqueue(pVScsiLun, pVScsiIoReq);
+ if (RT_FAILURE(rc))
+ {
+ ASMAtomicDecU32(&pVScsiLun->IoReq.cReqOutstanding);
+ vscsiLunReqFree(pVScsiLun, pVScsiIoReq);
+ }
+ }
+
+ return rc;
+}
+
+
+int vscsiIoReqUnmapEnqueue(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq,
+ PRTRANGE paRanges, unsigned cRanges)
+{
+ int rc = VINF_SUCCESS;
+ PVSCSIIOREQINT pVScsiIoReq = NULL;
+
+ LogFlowFunc(("pVScsiLun=%#p pVScsiReq=%#p paRanges=%#p cRanges=%u\n",
+ pVScsiLun, pVScsiReq, paRanges, cRanges));
+
+ rc = vscsiLunReqAlloc(pVScsiLun, (uintptr_t)pVScsiReq, &pVScsiIoReq);
+ if (RT_SUCCESS(rc))
+ {
+ pVScsiIoReq->pVScsiReq = pVScsiReq;
+ pVScsiIoReq->pVScsiLun = pVScsiLun;
+ pVScsiIoReq->enmTxDir = VSCSIIOREQTXDIR_UNMAP;
+ pVScsiIoReq->u.Unmap.paRanges = paRanges;
+ pVScsiIoReq->u.Unmap.cRanges = cRanges;
+
+ ASMAtomicIncU32(&pVScsiLun->IoReq.cReqOutstanding);
+
+ rc = vscsiLunReqTransferEnqueue(pVScsiLun, pVScsiIoReq);
+ if (RT_FAILURE(rc))
+ {
+ ASMAtomicDecU32(&pVScsiLun->IoReq.cReqOutstanding);
+ vscsiLunReqFree(pVScsiLun, pVScsiIoReq);
+ }
+ }
+
+ return rc;
+}
+
+
+uint32_t vscsiIoReqOutstandingCountGet(PVSCSILUNINT pVScsiLun)
+{
+ return ASMAtomicReadU32(&pVScsiLun->IoReq.cReqOutstanding);
+}
+
+
+VBOXDDU_DECL(int) VSCSIIoReqCompleted(VSCSIIOREQ hVScsiIoReq, int rcIoReq, bool fRedoPossible)
+{
+ PVSCSIIOREQINT pVScsiIoReq = hVScsiIoReq;
+ PVSCSILUNINT pVScsiLun;
+ PVSCSIREQINT pVScsiReq;
+ int rcReq = SCSI_STATUS_OK;
+
+ AssertPtrReturn(pVScsiIoReq, VERR_INVALID_HANDLE);
+
+ LogFlowFunc(("hVScsiIoReq=%#p rcIoReq=%Rrc\n", hVScsiIoReq, rcIoReq));
+
+ pVScsiLun = pVScsiIoReq->pVScsiLun;
+ pVScsiReq = pVScsiIoReq->pVScsiReq;
+
+ AssertMsg(pVScsiLun->IoReq.cReqOutstanding > 0,
+ ("Unregistered I/O request completed\n"));
+
+ ASMAtomicDecU32(&pVScsiLun->IoReq.cReqOutstanding);
+
+ if (RT_SUCCESS(rcIoReq))
+ rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
+ else if (!fRedoPossible)
+ {
+ /** @todo Not 100% correct for the write case as the 0x00 ASCQ for write errors
+ * is not used for SBC devices. */
+ rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_MEDIUM_ERROR,
+ pVScsiIoReq->enmTxDir == VSCSIIOREQTXDIR_READ
+ ? SCSI_ASC_READ_ERROR
+ : SCSI_ASC_WRITE_ERROR,
+ 0x00);
+ }
+ else
+ rcReq = SCSI_STATUS_CHECK_CONDITION;
+
+ if (pVScsiIoReq->enmTxDir == VSCSIIOREQTXDIR_UNMAP)
+ RTMemFree(pVScsiIoReq->u.Unmap.paRanges);
+
+ /* Free the I/O request */
+ vscsiLunReqFree(pVScsiLun, pVScsiIoReq);
+
+ /* Notify completion of the SCSI request. */
+ vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, fRedoPossible, rcIoReq);
+
+ return VINF_SUCCESS;
+}
+
+
+VBOXDDU_DECL(VSCSIIOREQTXDIR) VSCSIIoReqTxDirGet(VSCSIIOREQ hVScsiIoReq)
+{
+ PVSCSIIOREQINT pVScsiIoReq = hVScsiIoReq;
+
+ AssertPtrReturn(pVScsiIoReq, VSCSIIOREQTXDIR_INVALID);
+
+ return pVScsiIoReq->enmTxDir;
+}
+
+
+VBOXDDU_DECL(int) VSCSIIoReqParamsGet(VSCSIIOREQ hVScsiIoReq, uint64_t *puOffset,
+ size_t *pcbTransfer, unsigned *pcSeg,
+ size_t *pcbSeg, PCRTSGSEG *ppaSeg)
+{
+ PVSCSIIOREQINT pVScsiIoReq = hVScsiIoReq;
+
+ AssertPtrReturn(pVScsiIoReq, VERR_INVALID_HANDLE);
+ AssertReturn( pVScsiIoReq->enmTxDir != VSCSIIOREQTXDIR_FLUSH
+ && pVScsiIoReq->enmTxDir != VSCSIIOREQTXDIR_UNMAP,
+ VERR_NOT_SUPPORTED);
+
+ *puOffset = pVScsiIoReq->u.Io.uOffset;
+ *pcbTransfer = pVScsiIoReq->u.Io.cbTransfer;
+ *pcSeg = pVScsiIoReq->u.Io.cSeg;
+ *pcbSeg = pVScsiIoReq->u.Io.cbSeg;
+ *ppaSeg = pVScsiIoReq->u.Io.paSeg;
+
+ return VINF_SUCCESS;
+}
+
+VBOXDDU_DECL(int) VSCSIIoReqUnmapParamsGet(VSCSIIOREQ hVScsiIoReq, PCRTRANGE *ppaRanges,
+ unsigned *pcRanges)
+{
+ PVSCSIIOREQINT pVScsiIoReq = hVScsiIoReq;
+
+ AssertPtrReturn(pVScsiIoReq, VERR_INVALID_HANDLE);
+ AssertReturn(pVScsiIoReq->enmTxDir == VSCSIIOREQTXDIR_UNMAP, VERR_NOT_SUPPORTED);
+
+ *ppaRanges = pVScsiIoReq->u.Unmap.paRanges;
+ *pcRanges = pVScsiIoReq->u.Unmap.cRanges;
+
+ return VINF_SUCCESS;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-30 03:54:03 +0000