/*++
Complete a Scatter/Gather request on a SCSI device.
Returns: If fail, Win32 error.
If pass, total number of bytes transferred.
Completion status returned in pSqReq->sr_status.
--*/
uint32 ScsiRWSG( PSCSI_DEVICE pDevice, uint8* pBuf, uint32 nstartSec, uint8 Lun, uint8 bRead, int * pStatus)
{
uint32 uiExpectedBytesXferred = 0; // Expected total size of transfer (bytes).
uint32 uiActualBytesXferred = 0; // Actual total size of transfer (bytes).
uint32 dwFlags = 0; // Flags indicating need for double buffering.
uint32 dwErr = ERROR_SUCCESS; // Error code.
uint32 uiBytesXferred = SIZE_PER_SECTOR; // Number of bytes to transfer in current sub-transfer.
uint32 sg; // Index of current Scatter/Gather buffer.
if (dwFlags == 0)
{
// TRANSFER EACH SCATTER/GATHER BUFFER SEPARATELY.
//
{
//
// Transfer the contiguous sectors in the current
// Scatter/Gather buffer.
// (Recall) Double buffer is not required, as all buffers are
// sector aligned.
//
//hal_HstSendEvent(SYS_EVENT,0x09089011);
dwErr = ScsiReadWrite(pDevice, nstartSec, 1, pBuf, &uiBytesXferred, Lun, bRead);
*pStatus = dwErr;
if(dwErr == ERROR_SUCCESS)
return 512;
else
return 0;
}
}
return uiActualBytesXferred;
}
void
AHCIPort::ScsiExecuteRequest(scsi_ccb *request)
{
// TRACE("AHCIPort::ScsiExecuteRequest port %d, opcode 0x%02x, length %u\n", fIndex, request->cdb[0], request->cdb_length);
if (fIsATAPI) {
bool isWrite = false;
switch (request->flags & SCSI_DIR_MASK) {
case SCSI_DIR_NONE:
ASSERT(request->data_length == 0);
break;
case SCSI_DIR_IN:
ASSERT(request->data_length > 0);
break;
case SCSI_DIR_OUT:
isWrite = true;
ASSERT(request->data_length > 0);
break;
default:
panic("CDB has invalid direction mask");
}
// TRACE("AHCIPort::ScsiExecuteRequest ATAPI: port %d, opcode 0x%02x, length %u\n", fIndex, request->cdb[0], request->cdb_length);
sata_request *sreq = new(std::nothrow) sata_request(request);
if (sreq == NULL) {
TRACE("out of memory when allocating atapi request\n");
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
return;
}
sreq->set_atapi_cmd(request->data_length);
// uint8 *data = (uint8*) sreq->ccb()->cdb;
// for (int i = 0; i < 16; i += 8) {
// TRACE(" %02x %02x %02x %02x %02x %02x %02x %02x\n", data[i], data[i+1], data[i+2], data[i+3], data[i+4], data[i+5], data[i+6], data[i+7]);
// }
ExecuteSataRequest(sreq, isWrite);
return;
}
if (request->cdb[0] == SCSI_OP_REQUEST_SENSE) {
panic("ahci: SCSI_OP_REQUEST_SENSE not yet supported\n");
return;
}
if (!fDevicePresent) {
TRACE("no device present on port %d\n", fIndex);
request->subsys_status = SCSI_DEV_NOT_THERE;
gSCSI->finished(request, 1);
return;
}
request->subsys_status = SCSI_REQ_CMP;
switch (request->cdb[0]) {
case SCSI_OP_TEST_UNIT_READY:
ScsiTestUnitReady(request);
break;
case SCSI_OP_INQUIRY:
ScsiInquiry(request);
break;
case SCSI_OP_READ_CAPACITY:
ScsiReadCapacity(request);
break;
case SCSI_OP_SERVICE_ACTION_IN:
if ((request->cdb[1] & 0x1f) == SCSI_SAI_READ_CAPACITY_16)
ScsiReadCapacity16(request);
else {
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
case SCSI_OP_SYNCHRONIZE_CACHE:
ScsiSynchronizeCache(request);
break;
case SCSI_OP_READ_6:
case SCSI_OP_WRITE_6:
{
const scsi_cmd_rw_6 *cmd = (const scsi_cmd_rw_6 *)request->cdb;
uint32 position = ((uint32)cmd->high_lba << 16)
| ((uint32)cmd->mid_lba << 8) | (uint32)cmd->low_lba;
size_t length = cmd->length != 0 ? cmd->length : 256;
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_6;
ScsiReadWrite(request, position, length, isWrite);
break;
}
case SCSI_OP_READ_10:
case SCSI_OP_WRITE_10:
{
const scsi_cmd_rw_10 *cmd = (const scsi_cmd_rw_10 *)request->cdb;
uint32 position = B_BENDIAN_TO_HOST_INT32(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT16(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_10;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without "
"data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
case SCSI_OP_READ_12:
case SCSI_OP_WRITE_12:
{
const scsi_cmd_rw_12 *cmd = (const scsi_cmd_rw_12 *)request->cdb;
uint32 position = B_BENDIAN_TO_HOST_INT32(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT32(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_12;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without "
"data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
case SCSI_OP_READ_16:
case SCSI_OP_WRITE_16:
{
const scsi_cmd_rw_16 *cmd = (const scsi_cmd_rw_16 *)request->cdb;
uint64 position = B_BENDIAN_TO_HOST_INT64(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT32(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_16;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without "
"data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
case SCSI_OP_WRITE_SAME_16:
{
const scsi_cmd_wsame_16 *cmd = (const scsi_cmd_wsame_16 *)request->cdb;
// SCSI unmap is used for trim, otherwise we don't support it
if (!cmd->unmap) {
TRACE("%s port %d: unsupported request opcode 0x%02x\n",
__func__, fIndex, request->cdb[0]);
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
break;
}
if (!fTrim) {
// Drive doesn't support trim (or atapi)
// Just say it was successful and quit
request->subsys_status = SCSI_REQ_CMP;
} else {
TRACE("%s unimplemented: TRIM call\n", __func__);
// TODO: Make Serial ATA (sata_request?) trim call here.
request->subsys_status = SCSI_REQ_ABORTED;
}
gSCSI->finished(request, 1);
break;
}
default:
TRACE("AHCIPort::ScsiExecuteRequest port %d unsupported request "
"opcode 0x%02x\n", fIndex, request->cdb[0]);
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
}
}
void
AHCIPort::ScsiExecuteRequest(scsi_ccb *request)
{
// TRACE("AHCIPort::ScsiExecuteRequest port %d, opcode 0x%02x, length %u\n", fIndex, request->cdb[0], request->cdb_length);
if (fIsATAPI) {
bool isWrite = false;
switch (request->flags & SCSI_DIR_MASK) {
case SCSI_DIR_NONE:
ASSERT(request->data_length == 0);
break;
case SCSI_DIR_IN:
ASSERT(request->data_length > 0);
break;
case SCSI_DIR_OUT:
isWrite = true;
ASSERT(request->data_length > 0);
break;
default:
panic("CDB has invalid direction mask");
}
// TRACE("AHCIPort::ScsiExecuteRequest ATAPI: port %d, opcode 0x%02x, length %u\n", fIndex, request->cdb[0], request->cdb_length);
sata_request *sreq = new(std::nothrow) sata_request(request);
sreq->set_atapi_cmd(request->data_length);
// uint8 *data = (uint8*) sreq->ccb()->cdb;
// for (int i = 0; i < 16; i += 8) {
// TRACE(" %02x %02x %02x %02x %02x %02x %02x %02x\n", data[i], data[i+1], data[i+2], data[i+3], data[i+4], data[i+5], data[i+6], data[i+7]);
// }
ExecuteSataRequest(sreq, isWrite);
return;
}
if (request->cdb[0] == SCSI_OP_REQUEST_SENSE) {
panic("ahci: SCSI_OP_REQUEST_SENSE not yet supported\n");
return;
}
if (!fDevicePresent) {
TRACE("no device present on port %d\n", fIndex);
request->subsys_status = SCSI_DEV_NOT_THERE;
gSCSI->finished(request, 1);
return;
}
request->subsys_status = SCSI_REQ_CMP;
switch (request->cdb[0]) {
case SCSI_OP_TEST_UNIT_READY:
ScsiTestUnitReady(request);
break;
case SCSI_OP_INQUIRY:
ScsiInquiry(request);
break;
case SCSI_OP_READ_CAPACITY:
ScsiReadCapacity(request);
break;
case SCSI_OP_SYNCHRONIZE_CACHE:
ScsiSynchronizeCache(request);
break;
case SCSI_OP_READ_6:
case SCSI_OP_WRITE_6:
{
scsi_cmd_rw_6 *cmd = (scsi_cmd_rw_6 *)request->cdb;
uint32 position = ((uint32)cmd->high_lba << 16) | ((uint32)cmd->mid_lba << 8) | (uint32)cmd->low_lba;
size_t length = cmd->length != 0 ? cmd->length : 256;
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_6;
ScsiReadWrite(request, position, length, isWrite);
break;
}
case SCSI_OP_READ_10:
case SCSI_OP_WRITE_10:
{
scsi_cmd_rw_10 *cmd = (scsi_cmd_rw_10 *)request->cdb;
uint32 position = B_BENDIAN_TO_HOST_INT32(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT16(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_10;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
case SCSI_OP_READ_12:
case SCSI_OP_WRITE_12:
{
scsi_cmd_rw_12 *cmd = (scsi_cmd_rw_12 *)request->cdb;
uint32 position = B_BENDIAN_TO_HOST_INT32(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT32(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_12;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
default:
TRACE("AHCIPort::ScsiExecuteRequest port %d unsupported request opcode 0x%02x\n", fIndex, request->cdb[0]);
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
}
}
void
AHCIPort::ScsiExecuteRequest(scsi_ccb* request)
{
// TRACE("AHCIPort::ScsiExecuteRequest port %d, opcode 0x%02x, length %u\n", fIndex, request->cdb[0], request->cdb_length);
if (fIsATAPI) {
bool isWrite = false;
switch (request->flags & SCSI_DIR_MASK) {
case SCSI_DIR_NONE:
ASSERT(request->data_length == 0);
break;
case SCSI_DIR_IN:
ASSERT(request->data_length > 0);
break;
case SCSI_DIR_OUT:
isWrite = true;
ASSERT(request->data_length > 0);
break;
default:
panic("CDB has invalid direction mask");
}
// TRACE("AHCIPort::ScsiExecuteRequest ATAPI: port %d, opcode 0x%02x, length %u\n", fIndex, request->cdb[0], request->cdb_length);
sata_request* sreq = new(std::nothrow) sata_request(request);
if (sreq == NULL) {
TRACE("out of memory when allocating atapi request\n");
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
return;
}
sreq->SetATAPICommand(request->data_length);
// uint8* data = (uint8*) sreq->ccb()->cdb;
// for (int i = 0; i < 16; i += 8) {
// TRACE(" %02x %02x %02x %02x %02x %02x %02x %02x\n", data[i], data[i+1], data[i+2], data[i+3], data[i+4], data[i+5], data[i+6], data[i+7]);
// }
ExecuteSataRequest(sreq, isWrite);
return;
}
if (request->cdb[0] == SCSI_OP_REQUEST_SENSE) {
panic("ahci: SCSI_OP_REQUEST_SENSE not yet supported\n");
return;
}
if (!fDevicePresent) {
TRACE("no device present on port %d\n", fIndex);
request->subsys_status = SCSI_DEV_NOT_THERE;
gSCSI->finished(request, 1);
return;
}
request->subsys_status = SCSI_REQ_CMP;
switch (request->cdb[0]) {
case SCSI_OP_TEST_UNIT_READY:
ScsiTestUnitReady(request);
break;
case SCSI_OP_INQUIRY:
ScsiInquiry(request);
break;
case SCSI_OP_READ_CAPACITY:
ScsiReadCapacity(request);
break;
case SCSI_OP_SERVICE_ACTION_IN:
if ((request->cdb[1] & 0x1f) == SCSI_SAI_READ_CAPACITY_16)
ScsiReadCapacity16(request);
else {
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
case SCSI_OP_SYNCHRONIZE_CACHE:
ScsiSynchronizeCache(request);
break;
case SCSI_OP_READ_6:
case SCSI_OP_WRITE_6:
{
const scsi_cmd_rw_6* cmd = (const scsi_cmd_rw_6*)request->cdb;
uint32 position = ((uint32)cmd->high_lba << 16)
| ((uint32)cmd->mid_lba << 8) | (uint32)cmd->low_lba;
size_t length = cmd->length != 0 ? cmd->length : 256;
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_6;
ScsiReadWrite(request, position, length, isWrite);
break;
}
case SCSI_OP_READ_10:
case SCSI_OP_WRITE_10:
{
const scsi_cmd_rw_10* cmd = (const scsi_cmd_rw_10*)request->cdb;
uint32 position = B_BENDIAN_TO_HOST_INT32(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT16(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_10;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without "
"data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
case SCSI_OP_READ_12:
case SCSI_OP_WRITE_12:
{
const scsi_cmd_rw_12* cmd = (const scsi_cmd_rw_12*)request->cdb;
uint32 position = B_BENDIAN_TO_HOST_INT32(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT32(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_12;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without "
"data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
case SCSI_OP_READ_16:
case SCSI_OP_WRITE_16:
{
const scsi_cmd_rw_16* cmd = (const scsi_cmd_rw_16*)request->cdb;
uint64 position = B_BENDIAN_TO_HOST_INT64(cmd->lba);
size_t length = B_BENDIAN_TO_HOST_INT32(cmd->length);
bool isWrite = request->cdb[0] == SCSI_OP_WRITE_16;
if (length) {
ScsiReadWrite(request, position, length, isWrite);
} else {
TRACE("AHCIPort::ScsiExecuteRequest error: transfer without "
"data!\n");
request->subsys_status = SCSI_REQ_INVALID;
gSCSI->finished(request, 1);
}
break;
}
case SCSI_OP_UNMAP:
{
const scsi_cmd_unmap* cmd = (const scsi_cmd_unmap*)request->cdb;
if (!fTrimSupported) {
TRACE("%s port %d: unsupported request opcode 0x%02x\n",
__func__, fIndex, request->cdb[0]);
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
break;
}
scsi_unmap_parameter_list* unmapBlocks
= (scsi_unmap_parameter_list*)request->data;
if (unmapBlocks == NULL
|| B_BENDIAN_TO_HOST_INT16(cmd->length) != request->data_length
|| B_BENDIAN_TO_HOST_INT16(unmapBlocks->data_length)
!= request->data_length - 1) {
TRACE("%s port %d: invalid unmap parameter data length\n",
__func__, fIndex);
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
} else {
ScsiUnmap(request, unmapBlocks);
}
break;
}
default:
TRACE("AHCIPort::ScsiExecuteRequest port %d unsupported request "
"opcode 0x%02x\n", fIndex, request->cdb[0]);
request->subsys_status = SCSI_REQ_ABORTED;
gSCSI->finished(request, 1);
}
}