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Added sanity checks to SCSI hard disk emulation and made changes to the dynamic SCSI data buffer allocation, fixes problems when less data is requested for the INQUIRY command than it would actually need.

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This commit is contained in:
OBattler
2017-05-29 06:17:13 +02:00
parent 3b0b27f5b6
commit 761292e9f1
5 changed files with 118 additions and 120 deletions
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28
src/scsi_buslogic.c
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@@ -762,8 +762,6 @@ BuslogicDataBufferAllocate(Req_t *req, int Is24bit)
free(SCSIDevices[req->TargetID][req->LUN].CmdBuffer);
SCSIDevices[req->TargetID][req->LUN].CmdBuffer = NULL;
}
SCSIDevices[req->TargetID][req->LUN].CmdBuffer = (uint8_t *) malloc(DataLength);
memset(SCSIDevices[req->TargetID][req->LUN].CmdBuffer, 0, DataLength);
if ((req->CmdBlock.common.ControlByte != 0x03) && DataLength) {
if (req->CmdBlock.common.Opcode == SCATTER_GATHER_COMMAND ||
@@ -799,6 +797,9 @@ BuslogicDataBufferAllocate(Req_t *req, int Is24bit)
SCSIDevices[req->TargetID][req->LUN].InitLength = DataToTransfer;
SCSIDevices[req->TargetID][req->LUN].CmdBuffer = (uint8_t *) malloc(DataToTransfer);
memset(SCSIDevices[req->TargetID][req->LUN].CmdBuffer, 0, DataToTransfer);
/* If the control byte is 0x00, it means that the transfer direction is set up by the SCSI command without
checking its length, so do this procedure for both no read/write commands. */
if ((req->CmdBlock.common.ControlByte == CCB_DATA_XFER_OUT) ||
@@ -835,6 +836,10 @@ BuslogicDataBufferAllocate(Req_t *req, int Is24bit)
uint32_t Address = DataPointer;
SCSIDevices[req->TargetID][req->LUN].InitLength = DataLength;
SCSIDevices[req->TargetID][req->LUN].CmdBuffer = (uint8_t *) malloc(DataLength);
memset(SCSIDevices[req->TargetID][req->LUN].CmdBuffer, 0, DataLength);
if (DataLength > 0) {
DMAPageRead(Address,
(char *)SCSIDevices[req->TargetID][req->LUN].CmdBuffer,
@@ -2222,22 +2227,17 @@ BuslogicInit(int chip)
pclog("Building SCSI CD-ROM map...\n");
build_scsi_cdrom_map();
for (i=0; i<16; i++) {
for (j=0; j<8; j++)
{
if (scsi_hard_disks[i][j] != 0xff)
{
SCSIDevices[i][j].LunType = SCSI_DISK;
pclog("Found SCSI disk: %02i:%02i\n", i, j);
}
}
}
for (i=0; i<16; i++) {
for (j=0; j<8; j++) {
if (find_cdrom_for_scsi_id(i, j) != 0xff) {
if (scsi_hard_disks[i][j] != 0xff) {
SCSIDevices[i][j].LunType = SCSI_DISK;
}
else if (find_cdrom_for_scsi_id(i, j) != 0xff) {
SCSIDevices[i][j].LunType = SCSI_CDROM;
}
else {
SCSIDevices[i][j].LunType = SCSI_NONE;
}
}
}