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/* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
*
* First release
*
* Current development and maintenance by:
* (c) 2000 In-System Design, Inc. (support@in-system.com)
*
* The ISD200 ASIC does not natively support ATA devices. The chip
* does implement an interface, the ATA Command Block (ATACB) which provides
* a means of passing ATA commands and ATA register accesses to a device.
*
* 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; either version 2, or (at your option) any
* later version.
*
* 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, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* History:
*
* 2001-02-24: Removed lots of duplicate code and simplified the structure.
* (bjorn@haxx.se)
*/
/* Include files */
#include "transport.h"
#include "protocol.h"
#include "usb.h"
#include "debug.h"
#include "scsiglue.h"
#include "isd200.h"
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
/*
* Inquiry defines. Used to interpret data returned from target as result
* of inquiry command.
*
* DeviceType field
*/
#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
/* Timeout defines (in Seconds) */
#define ISD200_ENUM_BSY_TIMEOUT 35
#define ISD200_ENUM_DETECT_TIMEOUT 30
#define ISD200_DEFAULT_TIMEOUT 30
/* device flags */
#define DF_ATA_DEVICE 0x0001
#define DF_MEDIA_STATUS_ENABLED 0x0002
#define DF_REMOVABLE_MEDIA 0x0004
/* capability bit definitions */
#define CAPABILITY_DMA 0x01
#define CAPABILITY_LBA 0x02
/* command_setX bit definitions */
#define COMMANDSET_REMOVABLE 0x02
#define COMMANDSET_MEDIA_STATUS 0x10
/* ATA Vendor Specific defines */
#define ATA_ADDRESS_DEVHEAD_STD 0xa0
#define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
#define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
/* Action Select bits */
#define ACTION_SELECT_0 0x01
#define ACTION_SELECT_1 0x02
#define ACTION_SELECT_2 0x04
#define ACTION_SELECT_3 0x08
#define ACTION_SELECT_4 0x10
#define ACTION_SELECT_5 0x20
#define ACTION_SELECT_6 0x40
#define ACTION_SELECT_7 0x80
/* ATA error definitions not in <linux/hdreg.h> */
#define ATA_ERROR_MEDIA_CHANGE 0x20
/* ATA command definitions not in <linux/hdreg.h> */
#define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
#define ATA_COMMAND_MEDIA_EJECT 0xED
/* ATA drive control definitions */
#define ATA_DC_DISABLE_INTERRUPTS 0x02
#define ATA_DC_RESET_CONTROLLER 0x04
#define ATA_DC_REENABLE_CONTROLLER 0x00
/*
* General purpose return codes
*/
#define ISD200_ERROR -1
#define ISD200_GOOD 0
/*
* Transport return codes
*/
#define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
#define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
#define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
#define ISD200_TRANSPORT_ABORTED 3 /* Transport aborted */
#define ISD200_TRANSPORT_SHORT 4 /* Transport short */
/* driver action codes */
#define ACTION_READ_STATUS 0
#define ACTION_RESET 1
#define ACTION_REENABLE 2
#define ACTION_SOFT_RESET 3
#define ACTION_ENUM 4
#define ACTION_IDENTIFY 5
/*
* ata_cdb struct
*/
union ata_cdb {
struct {
unsigned char SignatureByte0;
unsigned char SignatureByte1;
unsigned char ActionSelect;
unsigned char RegisterSelect;
unsigned char TransferBlockSize;
unsigned char WriteData3F6;
unsigned char WriteData1F1;
unsigned char WriteData1F2;
unsigned char WriteData1F3;
unsigned char WriteData1F4;
unsigned char WriteData1F5;
unsigned char WriteData1F6;
unsigned char WriteData1F7;
unsigned char Reserved[3];
} generic;
struct {
unsigned char SignatureByte0;
unsigned char SignatureByte1;
unsigned char ReadRegisterAccessBit : 1;
unsigned char NoDeviceSelectionBit : 1;
unsigned char NoBSYPollBit : 1;
unsigned char IgnorePhaseErrorBit : 1;
unsigned char IgnoreDeviceErrorBit : 1;
unsigned char Reserved0Bit : 3;
unsigned char SelectAlternateStatus : 1;
unsigned char SelectError : 1;
unsigned char SelectSectorCount : 1;
unsigned char SelectSectorNumber : 1;
unsigned char SelectCylinderLow : 1;
unsigned char SelectCylinderHigh : 1;
unsigned char SelectDeviceHead : 1;
unsigned char SelectStatus : 1;
unsigned char TransferBlockSize;
unsigned char AlternateStatusByte;
unsigned char ErrorByte;
unsigned char SectorCountByte;
unsigned char SectorNumberByte;
unsigned char CylinderLowByte;
unsigned char CylinderHighByte;
unsigned char DeviceHeadByte;
unsigned char StatusByte;
unsigned char Reserved[3];
} read;
struct {
unsigned char SignatureByte0;
unsigned char SignatureByte1;
unsigned char ReadRegisterAccessBit : 1;
unsigned char NoDeviceSelectionBit : 1;
unsigned char NoBSYPollBit : 1;
unsigned char IgnorePhaseErrorBit : 1;
unsigned char IgnoreDeviceErrorBit : 1;
unsigned char Reserved0Bit : 3;
unsigned char SelectDeviceControl : 1;
unsigned char SelectFeatures : 1;
unsigned char SelectSectorCount : 1;
unsigned char SelectSectorNumber : 1;
unsigned char SelectCylinderLow : 1;
unsigned char SelectCylinderHigh : 1;
unsigned char SelectDeviceHead : 1;
unsigned char SelectCommand : 1;
unsigned char TransferBlockSize;
unsigned char DeviceControlByte;
unsigned char FeaturesByte;
unsigned char SectorCountByte;
unsigned char SectorNumberByte;
unsigned char CylinderLowByte;
unsigned char CylinderHighByte;
unsigned char DeviceHeadByte;
unsigned char CommandByte;
unsigned char Reserved[3];
} write;
};
/*
* Inquiry data structure. This is the data returned from the target
* after it receives an inquiry.
*
* This structure may be extended by the number of bytes specified
* in the field AdditionalLength. The defined size constant only
* includes fields through ProductRevisionLevel.
*/
struct inquiry_data {
unsigned char DeviceType : 5;
unsigned char DeviceTypeQualifier : 3;
unsigned char DeviceTypeModifier : 7;
unsigned char RemovableMedia : 1;
unsigned char Versions;
unsigned char ResponseDataFormat : 4;
unsigned char HiSupport : 1;
unsigned char NormACA : 1;
unsigned char ReservedBit : 1;
unsigned char AERC : 1;
unsigned char AdditionalLength;
unsigned char Reserved[2];
unsigned char SoftReset : 1;
unsigned char CommandQueue : 1;
unsigned char Reserved2 : 1;
unsigned char LinkedCommands : 1;
unsigned char Synchronous : 1;
unsigned char Wide16Bit : 1;
unsigned char Wide32Bit : 1;
unsigned char RelativeAddressing : 1;
unsigned char VendorId[8];
unsigned char ProductId[16];
unsigned char ProductRevisionLevel[4];
unsigned char VendorSpecific[20];
unsigned char Reserved3[40];
} __attribute__ ((packed));
/*
* INQUIRY data buffer size
*/
#define INQUIRYDATABUFFERSIZE 36
/*
* ISD200 CONFIG data struct
*/
struct isd200_config {
unsigned char EventNotification;
unsigned char ExternalClock;
unsigned char ATAInitTimeout;
unsigned char ATATiming : 4;
unsigned char ATAPIReset : 1;
unsigned char MasterSlaveSelection : 1;
unsigned char ATAPICommandBlockSize : 2;
unsigned char ATAMajorCommand;
unsigned char ATAMinorCommand;
unsigned char LastLUNIdentifier : 3;
unsigned char DescriptOverride : 1;
unsigned char ATA3StateSuspend : 1;
unsigned char SkipDeviceBoot : 1;
unsigned char ConfigDescriptor2 : 1;
unsigned char InitStatus : 1;
unsigned char SRSTEnable : 1;
unsigned char Reserved0 : 7;
};
/*
* ISD200 driver information struct
*/
struct isd200_info {
struct inquiry_data InquiryData;
struct hd_driveid drive;
struct isd200_config ConfigData;
unsigned char ATARegs[8];
unsigned char DeviceHead;
unsigned char DeviceFlags;
/* maximum number of LUNs supported */
unsigned char MaxLUNs;
};
/*
* Read Capacity Data - returned in Big Endian format
*/
struct read_capacity_data {
unsigned long LogicalBlockAddress;
unsigned long BytesPerBlock;
};
/*
* Read Block Limits Data - returned in Big Endian format
* This structure returns the maximum and minimum block
* size for a TAPE device.
*/
struct read_block_limits {
unsigned char Reserved;
unsigned char BlockMaximumSize[3];
unsigned char BlockMinimumSize[2];
};
/*
* Sense Data Format
*/
struct sense_data {
unsigned char ErrorCode:7;
unsigned char Valid:1;
unsigned char SegmentNumber;
unsigned char SenseKey:4;
unsigned char Reserved:1;
unsigned char IncorrectLength:1;
unsigned char EndOfMedia:1;
unsigned char FileMark:1;
unsigned char Information[4];
unsigned char AdditionalSenseLength;
unsigned char CommandSpecificInformation[4];
unsigned char AdditionalSenseCode;
unsigned char AdditionalSenseCodeQualifier;
unsigned char FieldReplaceableUnitCode;
unsigned char SenseKeySpecific[3];
} __attribute__ ((packed));
/*
* Default request sense buffer size
*/
#define SENSE_BUFFER_SIZE 18
/***********************************************************************
* Helper routines
***********************************************************************/
/**************************************************************************
* isd200_build_sense
*
* Builds an artificial sense buffer to report the results of a
* failed command.
*
* RETURNS:
* void
*/
void isd200_build_sense(struct us_data *us, Scsi_Cmnd *srb)
{
struct isd200_info *info = (struct isd200_info *)us->extra;
struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
unsigned char error = info->ATARegs[IDE_ERROR_OFFSET];
if(error & ATA_ERROR_MEDIA_CHANGE) {
buf->ErrorCode = 0x70;
buf->Valid = 1;
buf->AdditionalSenseLength = 0xb;
buf->SenseKey = UNIT_ATTENTION;
buf->AdditionalSenseCode = 0;
buf->AdditionalSenseCodeQualifier = 0;
} else if(error & MCR_ERR) {
buf->ErrorCode = 0x70;
buf->Valid = 1;
buf->AdditionalSenseLength = 0xb;
buf->SenseKey = UNIT_ATTENTION;
buf->AdditionalSenseCode = 0;
buf->AdditionalSenseCodeQualifier = 0;
} else if(error & TRK0_ERR) {
buf->ErrorCode = 0x70;
buf->Valid = 1;
buf->AdditionalSenseLength = 0xb;
buf->SenseKey = NOT_READY;
buf->AdditionalSenseCode = 0;
buf->AdditionalSenseCodeQualifier = 0;
} else if(error & ECC_ERR) {
buf->ErrorCode = 0x70;
buf->Valid = 1;
buf->AdditionalSenseLength = 0xb;
buf->SenseKey = DATA_PROTECT;
buf->AdditionalSenseCode = 0;
buf->AdditionalSenseCodeQualifier = 0;
} else {
buf->ErrorCode = 0;
buf->Valid = 0;
buf->AdditionalSenseLength = 0;
buf->SenseKey = 0;
buf->AdditionalSenseCode = 0;
buf->AdditionalSenseCodeQualifier = 0;
}
}
/***********************************************************************
* Data transfer routines
***********************************************************************/
/**************************************************************************
* Transfer one SCSI scatter-gather buffer via bulk transfer
*
* Note that this function is necessary because we want the ability to
* use scatter-gather memory. Good performance is achieved by a combination
* of scatter-gather and clustering (which makes each chunk bigger).
*
* Note that the lower layer will always retry when a NAK occurs, up to the
* timeout limit. Thus we don't have to worry about it for individual
* packets.
*/
static int isd200_transfer_partial( struct us_data *us,
unsigned char dataDirection,
char *buf, int length )
{
int result;
int partial;
int pipe;
/* calculate the appropriate pipe information */
if (dataDirection == SCSI_DATA_READ)
pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
else
pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
/* transfer the data */
US_DEBUGP("isd200_transfer_partial(): xfer %d bytes\n", length);
result = usb_stor_bulk_msg(us, buf, pipe, length, &partial);
US_DEBUGP("usb_stor_bulk_msg() returned %d xferred %d/%d\n",
result, partial, length);
/* if we stall, we need to clear it before we go on */
if (result == -EPIPE) {
US_DEBUGP("clearing endpoint halt for pipe 0x%x\n", pipe);
usb_stor_clear_halt(us->pusb_dev, pipe);
}
/* did we send all the data? */
if (partial == length) {
US_DEBUGP("isd200_transfer_partial(): transfer complete\n");
return ISD200_TRANSPORT_GOOD;
}
/* uh oh... we have an error code, so something went wrong. */
if (result) {
/* NAK - that means we've retried a few times already */
if (result == -ETIMEDOUT) {
US_DEBUGP("isd200_transfer_partial(): device NAKed\n");
return ISD200_TRANSPORT_FAILED;
}
/* -ENOENT -- we canceled this transfer */
if (result == -ENOENT) {
US_DEBUGP("isd200_transfer_partial(): transfer aborted\n");
return ISD200_TRANSPORT_ABORTED;
}
/* the catch-all case */
US_DEBUGP("isd200_transfer_partial(): unknown error\n");
return ISD200_TRANSPORT_FAILED;
}
/* no error code, so we must have transferred some data,
* just not all of it */
return ISD200_TRANSPORT_SHORT;
}
/**************************************************************************
* Transfer an entire SCSI command's worth of data payload over the bulk
* pipe.
*
* Note that this uses us_transfer_partial to achieve it's goals -- this
* function simply determines if we're going to use scatter-gather or not,
* and acts appropriately. For now, it also re-interprets the error codes.
*/
static void isd200_transfer( struct us_data *us, Scsi_Cmnd *srb )
{
int i;
int result = -1;
struct scatterlist *sg;
unsigned int total_transferred = 0;
unsigned int transfer_amount;
/* calculate how much we want to transfer */
int dir = srb->sc_data_direction;
srb->sc_data_direction = SCSI_DATA_WRITE;
transfer_amount = usb_stor_transfer_length(srb);
srb->sc_data_direction = dir;
/* was someone foolish enough to request more data than available
* buffer space? */
if (transfer_amount > srb->request_bufflen)
transfer_amount = srb->request_bufflen;
/* are we scatter-gathering? */
if (srb->use_sg) {
/* loop over all the scatter gather structures and
* make the appropriate requests for each, until done
*/
sg = (struct scatterlist *) srb->request_buffer;
for (i = 0; i < srb->use_sg; i++) {
/* transfer the lesser of the next buffer or the
* remaining data */
if (transfer_amount - total_transferred >=
sg[i].length) {
result = isd200_transfer_partial(us,
srb->sc_data_direction,
sg[i].address,
sg[i].length);
total_transferred += sg[i].length;
} else
result = isd200_transfer_partial(us,
srb->sc_data_direction,
sg[i].address,
transfer_amount - total_transferred);
/* if we get an error, end the loop here */
if (result)
break;
}
}
else
/* no scatter-gather, just make the request */
result = isd200_transfer_partial(us,
srb->sc_data_direction,
srb->request_buffer,
transfer_amount);
/* return the result in the data structure itself */
srb->result = result;
}
/***********************************************************************
* Transport routines
***********************************************************************/
/**************************************************************************
* ISD200 Bulk Transport
*
* Note: This routine was copied from the usb_stor_Bulk_transport routine
* located in the transport.c source file. The scsi command is limited to
* only 12 bytes while the CDB for the ISD200 must be 16 bytes.
*/
int isd200_Bulk_transport( struct us_data *us, Scsi_Cmnd *srb,
union ata_cdb *AtaCdb, unsigned char AtaCdbLength )
{
struct bulk_cb_wrap bcb;
struct bulk_cs_wrap bcs;
int result;
int pipe;
int partial;
unsigned int transfer_amount;
int dir = srb->sc_data_direction;
srb->sc_data_direction = SCSI_DATA_WRITE;
transfer_amount = usb_stor_transfer_length(srb);
srb->sc_data_direction = dir;
/* set up the command wrapper */
bcb.Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb.DataTransferLength = cpu_to_le32(transfer_amount);
bcb.Flags = srb->sc_data_direction == SCSI_DATA_READ ? 1 << 7 : 0;
bcb.Tag = srb->serial_number;
bcb.Lun = srb->cmnd[1] >> 5;
if (us->flags & US_FL_SCM_MULT_TARG)
bcb.Lun |= srb->target << 4;
bcb.Length = AtaCdbLength;
/* construct the pipe handle */
pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
/* copy the command payload */
memset(bcb.CDB, 0, sizeof(bcb.CDB));
memcpy(bcb.CDB, AtaCdb, bcb.Length);
/* send it to out endpoint */
US_DEBUGP("Bulk command S 0x%x T 0x%x Trg %d LUN %d L %d F %d CL %d\n",
le32_to_cpu(bcb.Signature), bcb.Tag,
(bcb.Lun >> 4), (bcb.Lun & 0xFF),
bcb.DataTransferLength, bcb.Flags, bcb.Length);
result = usb_stor_bulk_msg(us, &bcb, pipe, US_BULK_CB_WRAP_LEN,
&partial);
US_DEBUGP("Bulk command transfer result=%d\n", result);
if (result == -ENOENT)
return ISD200_TRANSPORT_ABORTED;
else if (result == -EPIPE) {
/* if we stall, we need to clear it before we go on */
US_DEBUGP("clearing endpoint halt for pipe 0x%x\n", pipe);
usb_stor_clear_halt(us->pusb_dev, pipe);
} else if (result)
return ISD200_TRANSPORT_ERROR;
/* if the command transfered well, then we go to the data stage */
if (!result && bcb.DataTransferLength) {
isd200_transfer(us, srb);
US_DEBUGP("Bulk data transfer result 0x%x\n", srb->result);
if (srb->result == ISD200_TRANSPORT_ABORTED)
return ISD200_TRANSPORT_ABORTED;
}
/* See flow chart on pg 15 of the Bulk Only Transport spec for
* an explanation of how this code works.
*/
/* construct the pipe handle */
pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
/* get CSW for device status */
US_DEBUGP("Attempting to get CSW...\n");
result = usb_stor_bulk_msg(us, &bcs, pipe, US_BULK_CS_WRAP_LEN,
&partial);
if (result == -ENOENT)
return ISD200_TRANSPORT_ABORTED;
/* did the attempt to read the CSW fail? */
if (result == -EPIPE) {
US_DEBUGP("clearing endpoint halt for pipe 0x%x\n", pipe);
usb_stor_clear_halt(us->pusb_dev, pipe);
/* get the status again */
US_DEBUGP("Attempting to get CSW (2nd try)...\n");
result = usb_stor_bulk_msg(us, &bcs, pipe,
US_BULK_CS_WRAP_LEN, &partial);
/* if the command was aborted, indicate that */
if (result == -ENOENT)
return ISD200_TRANSPORT_ABORTED;
/* if it fails again, we need a reset and return an error*/
if (result == -EPIPE) {
US_DEBUGP("clearing halt for pipe 0x%x\n", pipe);
usb_stor_clear_halt(us->pusb_dev, pipe);
return ISD200_TRANSPORT_ERROR;
}
}
/* if we still have a failure at this point, we're in trouble */
US_DEBUGP("Bulk status result = %d\n", result);
if (result)
return ISD200_TRANSPORT_ERROR;
/* check bulk status */
US_DEBUGP("Bulk status Sig 0x%x T 0x%x R %d Stat 0x%x\n",
le32_to_cpu(bcs.Signature), bcs.Tag,
bcs.Residue, bcs.Status);
if (bcs.Signature != cpu_to_le32(US_BULK_CS_SIGN) ||
bcs.Tag != bcb.Tag ||
bcs.Status > US_BULK_STAT_PHASE || partial != 13) {
US_DEBUGP("Bulk logical error\n");
return ISD200_TRANSPORT_ERROR;
}
/* based on the status code, we report good or bad */
switch (bcs.Status) {
case US_BULK_STAT_OK:
/* command good -- note that we could be short on data */
return ISD200_TRANSPORT_GOOD;
case US_BULK_STAT_FAIL:
/* command failed */
return ISD200_TRANSPORT_FAILED;
case US_BULK_STAT_PHASE:
/* phase error */
usb_stor_Bulk_reset(us);
return ISD200_TRANSPORT_ERROR;
}
/* we should never get here, but if we do, we're in trouble */
return ISD200_TRANSPORT_ERROR;
}
/**************************************************************************
* isd200_action
*
* Routine for sending commands to the isd200
*
* RETURNS:
* ISD status code
*/
static int isd200_action( struct us_data *us, int action,
void* pointer, int value )
{
union ata_cdb ata;
struct scsi_cmnd srb;
struct isd200_info *info = (struct isd200_info *)us->extra;
int status;
memset(&ata, 0, sizeof(ata));
memset(&srb, 0, sizeof(srb));
ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ata.generic.TransferBlockSize = 1;
switch ( action ) {
case ACTION_READ_STATUS:
US_DEBUGP(" isd200_action(READ_STATUS)\n");
ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
ata.read.SelectStatus = 1;
ata.read.SelectError = 1;
ata.read.SelectCylinderHigh = 1;
ata.read.SelectCylinderLow = 1;
srb.sc_data_direction = SCSI_DATA_READ;
srb.request_buffer = pointer;
srb.request_bufflen = value;
break;
case ACTION_ENUM:
US_DEBUGP(" isd200_action(ENUM,0x%02x)\n",value);
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
ACTION_SELECT_3|ACTION_SELECT_4|
ACTION_SELECT_5;
ata.write.SelectDeviceHead = 1;
ata.write.DeviceHeadByte = value;
srb.sc_data_direction = SCSI_DATA_NONE;
break;
case ACTION_RESET:
US_DEBUGP(" isd200_action(RESET)\n");
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
ACTION_SELECT_3|ACTION_SELECT_4;
ata.write.SelectDeviceControl = 1;
ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
srb.sc_data_direction = SCSI_DATA_NONE;
break;
case ACTION_REENABLE:
US_DEBUGP(" isd200_action(REENABLE)\n");
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
ACTION_SELECT_3|ACTION_SELECT_4;
ata.write.SelectDeviceControl = 1;
ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
srb.sc_data_direction = SCSI_DATA_NONE;
break;
case ACTION_SOFT_RESET:
US_DEBUGP(" isd200_action(SOFT_RESET)\n");
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
ata.write.SelectDeviceHead = 1;
ata.write.DeviceHeadByte = info->DeviceHead;
ata.write.SelectCommand = 1;
ata.write.CommandByte = WIN_SRST;
srb.sc_data_direction = SCSI_DATA_NONE;
break;
case ACTION_IDENTIFY:
US_DEBUGP(" isd200_action(IDENTIFY)\n");
ata.write.SelectCommand = 1;
ata.write.CommandByte = WIN_IDENTIFY;
srb.sc_data_direction = SCSI_DATA_READ;
srb.request_buffer = (void *)&info->drive;
srb.request_bufflen = sizeof(struct hd_driveid);
break;
default:
US_DEBUGP("Error: Undefined action %d\n",action);
break;
}
status = isd200_Bulk_transport(us, &srb, &ata, sizeof(ata.generic));
if (status != ISD200_TRANSPORT_GOOD) {
US_DEBUGP(" isd200_action(0x%02x) error: %d\n",action,status);
status = ISD200_ERROR;
/* need to reset device here */
}
return status;
}
/**************************************************************************
* isd200_read_regs
*
* Read ATA Registers
*
* RETURNS:
* ISD status code
*/
int isd200_read_regs( struct us_data *us )
{
struct isd200_info *info = (struct isd200_info *)us->extra;
int retStatus = ISD200_GOOD;
int transferStatus;
US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
transferStatus = isd200_action( us, ACTION_READ_STATUS,
info->ATARegs, sizeof(info->ATARegs) );
if (transferStatus != ISD200_TRANSPORT_GOOD) {
US_DEBUGP(" Error reading ATA registers\n");
retStatus = ISD200_ERROR;
} else {
US_DEBUGP(" Got ATA Register[IDE_ERROR_OFFSET] = 0x%x\n",
info->ATARegs[IDE_ERROR_OFFSET]);
}
return retStatus;
}
/**************************************************************************
* Invoke the transport and basic error-handling/recovery methods
*
* This is used by the protocol layers to actually send the message to
* the device and recieve the response.
*/
void isd200_invoke_transport( struct us_data *us,
Scsi_Cmnd *srb,
union ata_cdb *ataCdb )
{
int need_auto_sense = 0;
int transferStatus;
/* send the command to the transport layer */
transferStatus = isd200_Bulk_transport(us, srb, ataCdb,
sizeof(ataCdb->generic));
switch (transferStatus) {
case ISD200_TRANSPORT_GOOD:
/* Indicate a good result */
srb->result = GOOD;
break;
case ISD200_TRANSPORT_ABORTED:
/* if the command gets aborted by the higher layers, we need to
* short-circuit all other processing
*/
US_DEBUGP("-- transport indicates command was aborted\n");
srb->result = DID_ABORT << 16;
break;
case ISD200_TRANSPORT_FAILED:
US_DEBUGP("-- transport indicates command failure\n");
need_auto_sense = 1;
break;
case ISD200_TRANSPORT_ERROR:
US_DEBUGP("-- transport indicates transport failure\n");
srb->result = DID_ERROR << 16;
break;
case ISD200_TRANSPORT_SHORT:
if (!((srb->cmnd[0] == REQUEST_SENSE) ||
(srb->cmnd[0] == INQUIRY) ||
(srb->cmnd[0] == MODE_SENSE) ||
(srb->cmnd[0] == LOG_SENSE) ||
(srb->cmnd[0] == MODE_SENSE_10))) {
US_DEBUGP("-- unexpectedly short transfer\n");
need_auto_sense = 1;
}
break;
default:
US_DEBUGP("-- transport indicates unknown failure\n");
srb->result = DID_ERROR << 16;
}
if (need_auto_sense)
if (isd200_read_regs(us) == ISD200_GOOD)
isd200_build_sense(us, srb);
/* Regardless of auto-sense, if we _know_ we have an error
* condition, show that in the result code
*/
if (transferStatus == ISD200_TRANSPORT_FAILED)
srb->result = CHECK_CONDITION;
}
/**************************************************************************
* isd200_write_config
*
* Write the ISD200 Configuraton data
*
* RETURNS:
* ISD status code
*/
int isd200_write_config( struct us_data *us )
{
struct isd200_info *info = (struct isd200_info *)us->extra;
int retStatus = ISD200_GOOD;
int result;
US_DEBUGP("Entering isd200_write_config\n");
US_DEBUGP(" Writing the following ISD200 Config Data:\n");
US_DEBUGP(" Event Notification: 0x%x\n", info->ConfigData.EventNotification);
US_DEBUGP(" External Clock: 0x%x\n", info->ConfigData.ExternalClock);
US_DEBUGP(" ATA Init Timeout: 0x%x\n", info->ConfigData.ATAInitTimeout);
US_DEBUGP(" ATAPI Command Block Size: 0x%x\n", info->ConfigData.ATAPICommandBlockSize);
US_DEBUGP(" Master/Slave Selection: 0x%x\n", info->ConfigData.MasterSlaveSelection);
US_DEBUGP(" ATAPI Reset: 0x%x\n", info->ConfigData.ATAPIReset);
US_DEBUGP(" ATA Timing: 0x%x\n", info->ConfigData.ATATiming);
US_DEBUGP(" ATA Major Command: 0x%x\n", info->ConfigData.ATAMajorCommand);
US_DEBUGP(" ATA Minor Command: 0x%x\n", info->ConfigData.ATAMinorCommand);
US_DEBUGP(" Init Status: 0x%x\n", info->ConfigData.InitStatus);
US_DEBUGP(" Config Descriptor 2: 0x%x\n", info->ConfigData.ConfigDescriptor2);
US_DEBUGP(" Skip Device Boot: 0x%x\n", info->ConfigData.SkipDeviceBoot);
US_DEBUGP(" ATA 3 State Supsend: 0x%x\n", info->ConfigData.ATA3StateSuspend);
US_DEBUGP(" Descriptor Override: 0x%x\n", info->ConfigData.DescriptOverride);
US_DEBUGP(" Last LUN Identifier: 0x%x\n", info->ConfigData.LastLUNIdentifier);
US_DEBUGP(" SRST Enable: 0x%x\n", info->ConfigData.SRSTEnable);
/* let's send the command via the control pipe */
result = usb_stor_control_msg(
us,
usb_sndctrlpipe(us->pusb_dev,0),
0x01,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
0x0000,
0x0002,
(void *) &info->ConfigData,
sizeof(info->ConfigData));
if (result >= 0) {
US_DEBUGP(" ISD200 Config Data was written successfully\n");
} else {
US_DEBUGP(" Request to write ISD200 Config Data failed!\n");
/* STALL must be cleared when they are detected */
if (result == -EPIPE) {
US_DEBUGP("-- Stall on control pipe. Clearing\n");
result = usb_stor_clear_halt(us->pusb_dev,
usb_sndctrlpipe(us->pusb_dev, 0));
US_DEBUGP("-- usb_stor_clear_halt() returns %d\n", result);
}
retStatus = ISD200_ERROR;
}
US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
return retStatus;
}
/**************************************************************************
* isd200_read_config
*
* Reads the ISD200 Configuraton data
*
* RETURNS:
* ISD status code
*/
int isd200_read_config( struct us_data *us )
{
struct isd200_info *info = (struct isd200_info *)us->extra;
int retStatus = ISD200_GOOD;
int result;
US_DEBUGP("Entering isd200_read_config\n");
/* read the configuration information from ISD200. Use this to */
/* determine what the special ATA CDB bytes are. */
result = usb_stor_control_msg(
us,
usb_rcvctrlpipe(us->pusb_dev,0),
0x02,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0x0000,
0x0002,
(void *) &info->ConfigData,
sizeof(info->ConfigData));
if (result >= 0) {
US_DEBUGP(" Retrieved the following ISD200 Config Data:\n");
US_DEBUGP(" Event Notification: 0x%x\n", info->ConfigData.EventNotification);
US_DEBUGP(" External Clock: 0x%x\n", info->ConfigData.ExternalClock);
US_DEBUGP(" ATA Init Timeout: 0x%x\n", info->ConfigData.ATAInitTimeout);
US_DEBUGP(" ATAPI Command Block Size: 0x%x\n", info->ConfigData.ATAPICommandBlockSize);
US_DEBUGP(" Master/Slave Selection: 0x%x\n", info->ConfigData.MasterSlaveSelection);
US_DEBUGP(" ATAPI Reset: 0x%x\n", info->ConfigData.ATAPIReset);
US_DEBUGP(" ATA Timing: 0x%x\n", info->ConfigData.ATATiming);
US_DEBUGP(" ATA Major Command: 0x%x\n", info->ConfigData.ATAMajorCommand);
US_DEBUGP(" ATA Minor Command: 0x%x\n", info->ConfigData.ATAMinorCommand);
US_DEBUGP(" Init Status: 0x%x\n", info->ConfigData.InitStatus);
US_DEBUGP(" Config Descriptor 2: 0x%x\n", info->ConfigData.ConfigDescriptor2);
US_DEBUGP(" Skip Device Boot: 0x%x\n", info->ConfigData.SkipDeviceBoot);
US_DEBUGP(" ATA 3 State Supsend: 0x%x\n", info->ConfigData.ATA3StateSuspend);
US_DEBUGP(" Descriptor Override: 0x%x\n", info->ConfigData.DescriptOverride);
US_DEBUGP(" Last LUN Identifier: 0x%x\n", info->ConfigData.LastLUNIdentifier);
US_DEBUGP(" SRST Enable: 0x%x\n", info->ConfigData.SRSTEnable);
} else {
US_DEBUGP(" Request to get ISD200 Config Data failed!\n");
/* STALL must be cleared when they are detected */
if (result == -EPIPE) {
US_DEBUGP("-- Stall on control pipe. Clearing\n");
result = usb_stor_clear_halt(us->pusb_dev,
usb_sndctrlpipe(us->pusb_dev, 0));
US_DEBUGP("-- usb_stor_clear_halt() returns %d\n", result);
}
retStatus = ISD200_ERROR;
}
US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
return retStatus;
}
/**************************************************************************
* isd200_atapi_soft_reset
*
* Perform an Atapi Soft Reset on the device
*
* RETURNS:
* NT status code
*/
int isd200_atapi_soft_reset( struct us_data *us )
{
int retStatus = ISD200_GOOD;
int transferStatus;
US_DEBUGP("Entering isd200_atapi_soft_reset\n");
transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
if (transferStatus != ISD200_TRANSPORT_GOOD) {
US_DEBUGP(" Error issuing Atapi Soft Reset\n");
retStatus = ISD200_ERROR;
}
US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
return retStatus;
}
/**************************************************************************
* isd200_srst
*
* Perform an SRST on the device
*
* RETURNS:
* ISD status code
*/
int isd200_srst( struct us_data *us )
{
int retStatus = ISD200_GOOD;
int transferStatus;
US_DEBUGP("Entering isd200_SRST\n");
transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
/* check to see if this request failed */
if (transferStatus != ISD200_TRANSPORT_GOOD) {
US_DEBUGP(" Error issuing SRST\n");
retStatus = ISD200_ERROR;
} else {
/* delay 10ms to give the drive a chance to see it */
wait_ms(10);
transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
if (transferStatus != ISD200_TRANSPORT_GOOD) {
US_DEBUGP(" Error taking drive out of reset\n");
retStatus = ISD200_ERROR;
} else {
/* delay 50ms to give the drive a chance to recover after SRST */
wait_ms(50);
}
}
US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
return retStatus;
}
/**************************************************************************
* isd200_try_enum
*
* Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
* and tries to analyze the status registers
*
* RETURNS:
* ISD status code
*/
static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
int detect )
{
int status = ISD200_GOOD;
unsigned char regs[8];
unsigned long endTime;
struct isd200_info *info = (struct isd200_info *)us->extra;
int recheckAsMaster = FALSE;
if ( detect )
endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
else
endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
/* loop until we detect !BSY or timeout */
while(TRUE) {
#ifdef CONFIG_USB_STORAGE_DEBUG
char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
"Master" : "Slave";
#endif
status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
if ( status != ISD200_GOOD )
break;
status = isd200_action( us, ACTION_READ_STATUS,
regs, sizeof(regs) );
if ( status != ISD200_GOOD )
break;
if (!detect) {
if (regs[IDE_STATUS_OFFSET] & BUSY_STAT ) {
US_DEBUGP(" %s status is still BSY, try again...\n",mstr);
} else {
US_DEBUGP(" %s status !BSY, continue with next operation\n",mstr);
break;
}
}
/* check for BUSY_STAT and */
/* WRERR_STAT (workaround ATA Zip drive) and */
/* ERR_STAT (workaround for Archos CD-ROM) */
else if (regs[IDE_STATUS_OFFSET] &
(BUSY_STAT | WRERR_STAT | ERR_STAT )) {
US_DEBUGP(" Status indicates it is not ready, try again...\n");
}
/* check for DRDY, ATA devices set DRDY after SRST */
else if (regs[IDE_STATUS_OFFSET] & READY_STAT) {
US_DEBUGP(" Identified ATA device\n");
info->DeviceFlags |= DF_ATA_DEVICE;
info->DeviceHead = master_slave;
break;
}
/* check Cylinder High/Low to
determine if it is an ATAPI device
*/
else if ((regs[IDE_HCYL_OFFSET] == 0xEB) &&
(regs[IDE_LCYL_OFFSET] == 0x14)) {
/* It seems that the RICOH
MP6200A CD/RW drive will
report itself okay as a
slave when it is really a
master. So this check again
as a master device just to
make sure it doesn't report
itself okay as a master also
*/
if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
(recheckAsMaster == FALSE)) {
US_DEBUGP(" Identified ATAPI device as slave. Rechecking again as master\n");
recheckAsMaster = TRUE;
master_slave = ATA_ADDRESS_DEVHEAD_STD;
} else {
US_DEBUGP(" Identified ATAPI device\n");
info->DeviceHead = master_slave;
status = isd200_atapi_soft_reset(us);
break;
}
} else {
US_DEBUGP(" Not ATA, not ATAPI. Weird.\n");
}
/* check for timeout on this request */
if (jiffies >= endTime) {
if (!detect)
US_DEBUGP(" BSY check timeout, just continue with next operation...\n");
else
US_DEBUGP(" Device detect timeout!\n");
break;
}
}
return status;
}
/**************************************************************************
* isd200_manual_enum
*
* Determines if the drive attached is an ATA or ATAPI and if it is a
* master or slave.
*
* RETURNS:
* ISD status code
*/
int isd200_manual_enum(struct us_data *us)
{
struct isd200_info *info = (struct isd200_info *)us->extra;
int retStatus = ISD200_GOOD;
US_DEBUGP("Entering isd200_manual_enum\n");
retStatus = isd200_read_config(us);
if (retStatus == ISD200_GOOD) {
int isslave;
/* master or slave? */
retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, FALSE );
if (retStatus == ISD200_GOOD)
retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, FALSE );
if (retStatus == ISD200_GOOD) {
retStatus = isd200_srst(us);
if (retStatus == ISD200_GOOD)
/* ata or atapi? */
retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, TRUE );
}
isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
if (info->ConfigData.MasterSlaveSelection != isslave) {
US_DEBUGP(" Setting Master/Slave selection to %d\n", isslave);
info->ConfigData.MasterSlaveSelection = isslave;
retStatus = isd200_write_config(us);
}
}
US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
return(retStatus);
}
/**************************************************************************
* isd200_get_inquiry_data
*
* Get inquiry data
*
* RETURNS:
* ISD status code
*/
int isd200_get_inquiry_data( struct us_data *us )
{
struct isd200_info *info = (struct isd200_info *)us->extra;
int retStatus = ISD200_GOOD;
US_DEBUGP("Entering isd200_get_inquiry_data\n");
/* set default to Master */
info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
/* attempt to manually enumerate this device */
retStatus = isd200_manual_enum(us);
if (retStatus == ISD200_GOOD) {
int transferStatus;
/* check for an ATA device */
if (info->DeviceFlags & DF_ATA_DEVICE) {
/* this must be an ATA device */
/* perform an ATA Commmand Identify */
transferStatus = isd200_action( us, ACTION_IDENTIFY,
&info->drive,
sizeof(struct hd_driveid) );
if (transferStatus != ISD200_TRANSPORT_GOOD) {
/* Error issuing ATA Command Identify */
US_DEBUGP(" Error issuing ATA Command Identify\n");
retStatus = ISD200_ERROR;
} else {
/* ATA Command Identify successful */
int i;
US_DEBUGP(" Identify Data Structure:\n");
US_DEBUGP(" config = 0x%x\n", info->drive.config);
US_DEBUGP(" cyls = 0x%x\n", info->drive.cyls);
US_DEBUGP(" heads = 0x%x\n", info->drive.heads);
US_DEBUGP(" track_bytes = 0x%x\n", info->drive.track_bytes);
US_DEBUGP(" sector_bytes = 0x%x\n", info->drive.sector_bytes);
US_DEBUGP(" sectors = 0x%x\n", info->drive.sectors);
US_DEBUGP(" serial_no[0] = 0x%x\n", info->drive.serial_no[0]);
US_DEBUGP(" buf_type = 0x%x\n", info->drive.buf_type);
US_DEBUGP(" buf_size = 0x%x\n", info->drive.buf_size);
US_DEBUGP(" ecc_bytes = 0x%x\n", info->drive.ecc_bytes);
US_DEBUGP(" fw_rev[0] = 0x%x\n", info->drive.fw_rev[0]);
US_DEBUGP(" model[0] = 0x%x\n", info->drive.model[0]);
US_DEBUGP(" max_multsect = 0x%x\n", info->drive.max_multsect);
US_DEBUGP(" dword_io = 0x%x\n", info->drive.dword_io);
US_DEBUGP(" capability = 0x%x\n", info->drive.capability);
US_DEBUGP(" tPIO = 0x%x\n", info->drive.tPIO);
US_DEBUGP(" tDMA = 0x%x\n", info->drive.tDMA);
US_DEBUGP(" field_valid = 0x%x\n", info->drive.field_valid);
US_DEBUGP(" cur_cyls = 0x%x\n", info->drive.cur_cyls);
US_DEBUGP(" cur_heads = 0x%x\n", info->drive.cur_heads);
US_DEBUGP(" cur_sectors = 0x%x\n", info->drive.cur_sectors);
US_DEBUGP(" cur_capacity = 0x%x\n", (info->drive.cur_capacity1 << 16) + info->drive.cur_capacity0 );
US_DEBUGP(" multsect = 0x%x\n", info->drive.multsect);
US_DEBUGP(" lba_capacity = 0x%x\n", info->drive.lba_capacity);
US_DEBUGP(" command_set_1 = 0x%x\n", info->drive.command_set_1);
US_DEBUGP(" command_set_2 = 0x%x\n", info->drive.command_set_2);
memset(&info->InquiryData, 0, sizeof(info->InquiryData));
/* Standard IDE interface only supports disks */
info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
/* Fix-up the return data from an INQUIRY command to show
* ANSI SCSI rev 2 so we don't confuse the SCSI layers above us
* in Linux.
*/
info->InquiryData.Versions = 0x2;
/* The length must be at least 36 (5 + 31) */
info->InquiryData.AdditionalLength = 0x1F;
if (info->drive.command_set_1 & COMMANDSET_MEDIA_STATUS) {
/* set the removable bit */
info->InquiryData.RemovableMedia = 1;
info->DeviceFlags |= DF_REMOVABLE_MEDIA;
}
/* Fill in vendor identification fields */
for (i = 0; i < 20; i += 2) {
info->InquiryData.VendorId[i] =
info->drive.model[i + 1];
info->InquiryData.VendorId[i+1] =
info->drive.model[i];
}
/* Initialize unused portion of product id */
for (i = 0; i < 4; i++) {
info->InquiryData.ProductId[12+i] = ' ';
}
/* Move firmware revision from IDENTIFY data to */
/* product revision in INQUIRY data */
for (i = 0; i < 4; i += 2) {
info->InquiryData.ProductRevisionLevel[i] =
info->drive.fw_rev[i+1];
info->InquiryData.ProductRevisionLevel[i+1] =
info->drive.fw_rev[i];
}
/* determine if it supports Media Status Notification */
if (info->drive.command_set_2 & COMMANDSET_MEDIA_STATUS) {
US_DEBUGP(" Device supports Media Status Notification\n");
/* Indicate that it is enabled, even though it is not
* This allows the lock/unlock of the media to work
* correctly.
*/
info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
}
else
info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
}
} else {
/*
* this must be an ATAPI device
* use an ATAPI protocol (Transparent SCSI)
*/
us->protocol_name = "Transparent SCSI";
us->proto_handler = usb_stor_transparent_scsi_command;
US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
/* Free driver structure */
if (us->extra != NULL) {
kfree(us->extra);
us->extra = NULL;
us->extra_destructor = NULL;
}
}
}
US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
return(retStatus);
}
/**************************************************************************
* isd200_data_copy
*
* Copy data into the srb request buffer. Use scatter gather if required.
*
* RETURNS:
* void
*/
void isd200_data_copy(Scsi_Cmnd *srb, char * src, int length)
{
unsigned int len = length;
struct scatterlist *sg;
if (srb->use_sg) {
int i;
unsigned int total = 0;
/* Add up the sizes of all the sg segments */
sg = (struct scatterlist *) srb->request_buffer;
for (i = 0; i < srb->use_sg; i++)
total += sg[i].length;
if (length > total)
len = total;
total = 0;
/* Copy data into sg buffer(s) */
for (i = 0; i < srb->use_sg; i++) {
if ((len > total) && (len > 0)) {
/* transfer the lesser of the next buffer or the
* remaining data */
if (len - total >= sg[i].length) {
memcpy(sg[i].address, src + total, sg[i].length);
total += sg[i].length;
} else {
memcpy(sg[i].address, src + total, len - total);
total = len;
}
}
else
break;
}
} else {
/* Make sure length does not exceed buffer length */
if (length > srb->request_bufflen)
len = srb->request_bufflen;
if (len > 0)
memcpy(srb->request_buffer, src, len);
}
}
/**************************************************************************
* isd200_scsi_to_ata
*
* Translate SCSI commands to ATA commands.
*
* RETURNS:
* TRUE if the command needs to be sent to the transport layer
* FALSE otherwise
*/
int isd200_scsi_to_ata(Scsi_Cmnd *srb, struct us_data *us,
union ata_cdb * ataCdb)
{
struct isd200_info *info = (struct isd200_info *)us->extra;
int sendToTransport = TRUE;
unsigned char sectnum, head;
unsigned short cylinder;
unsigned long lba;
unsigned long blockCount;
unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
memset(ataCdb, 0, sizeof(union ata_cdb));
/* SCSI Command */
switch (srb->cmnd[0]) {
case INQUIRY:
US_DEBUGP(" ATA OUT - INQUIRY\n");
if (srb->request_bufflen > sizeof(struct inquiry_data))
srb->request_bufflen = sizeof(struct inquiry_data);
/* copy InquiryData */
isd200_data_copy(srb, (char *) &info->InquiryData, srb->request_bufflen);
srb->result = GOOD;
sendToTransport = FALSE;
break;
case MODE_SENSE:
US_DEBUGP(" ATA OUT - SCSIOP_MODE_SENSE\n");
/* Initialize the return buffer */
isd200_data_copy(srb, (char *) &senseData, 8);
if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
{
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ataCdb->generic.TransferBlockSize = 1;
ataCdb->write.SelectCommand = 1;
ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
srb->request_bufflen = 0;
} else {
US_DEBUGP(" Media Status not supported, just report okay\n");
srb->result = GOOD;
sendToTransport = FALSE;
}
break;
case TEST_UNIT_READY:
US_DEBUGP(" ATA OUT - SCSIOP_TEST_UNIT_READY\n");
/* Initialize the return buffer */
isd200_data_copy(srb, (char *) &senseData, 8);
if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
{
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ataCdb->generic.TransferBlockSize = 1;
ataCdb->write.SelectCommand = 1;
ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
srb->request_bufflen = 0;
} else {
US_DEBUGP(" Media Status not supported, just report okay\n");
srb->result = GOOD;
sendToTransport = FALSE;
}
break;
case READ_CAPACITY:
{
unsigned long capacity;
struct read_capacity_data readCapacityData;
US_DEBUGP(" ATA OUT - SCSIOP_READ_CAPACITY\n");
if (info->drive.capability & CAPABILITY_LBA ) {
capacity = info->drive.lba_capacity - 1;
} else {
capacity = (info->drive.heads *
info->drive.cyls *
info->drive.sectors) - 1;
}
readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
if (srb->request_bufflen > sizeof(struct read_capacity_data))
srb->request_bufflen = sizeof(struct read_capacity_data);
isd200_data_copy(srb, (char *) &readCapacityData, srb->request_bufflen);
srb->result = GOOD;
sendToTransport = FALSE;
}
break;
case READ_10:
US_DEBUGP(" ATA OUT - SCSIOP_READ\n");
lba = *(unsigned long *)&srb->cmnd[2];
lba = cpu_to_be32(lba);
blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
if (info->drive.capability & CAPABILITY_LBA) {
sectnum = (unsigned char)(lba);
cylinder = (unsigned short)(lba>>8);
head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
} else {
sectnum = (unsigned char)((lba % info->drive.sectors) + 1);
cylinder = (unsigned short)(lba / (info->drive.sectors *
info->drive.heads));
head = (unsigned char)((lba / info->drive.sectors) %
info->drive.heads);
}
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ataCdb->generic.TransferBlockSize = 1;
ataCdb->write.SelectSectorCount = 1;
ataCdb->write.SectorCountByte = (unsigned char)blockCount;
ataCdb->write.SelectSectorNumber = 1;
ataCdb->write.SectorNumberByte = sectnum;
ataCdb->write.SelectCylinderHigh = 1;
ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
ataCdb->write.SelectCylinderLow = 1;
ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
ataCdb->write.SelectDeviceHead = 1;
ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
ataCdb->write.SelectCommand = 1;
ataCdb->write.CommandByte = WIN_READ;
break;
case WRITE_10:
US_DEBUGP(" ATA OUT - SCSIOP_WRITE\n");
lba = *(unsigned long *)&srb->cmnd[2];
lba = cpu_to_be32(lba);
blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
if (info->drive.capability & CAPABILITY_LBA) {
sectnum = (unsigned char)(lba);
cylinder = (unsigned short)(lba>>8);
head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
} else {
sectnum = (unsigned char)((lba % info->drive.sectors) + 1);
cylinder = (unsigned short)(lba / (info->drive.sectors * info->drive.heads));
head = (unsigned char)((lba / info->drive.sectors) % info->drive.heads);
}
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ataCdb->generic.TransferBlockSize = 1;
ataCdb->write.SelectSectorCount = 1;
ataCdb->write.SectorCountByte = (unsigned char)blockCount;
ataCdb->write.SelectSectorNumber = 1;
ataCdb->write.SectorNumberByte = sectnum;
ataCdb->write.SelectCylinderHigh = 1;
ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
ataCdb->write.SelectCylinderLow = 1;
ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
ataCdb->write.SelectDeviceHead = 1;
ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
ataCdb->write.SelectCommand = 1;
ataCdb->write.CommandByte = WIN_WRITE;
break;
case ALLOW_MEDIUM_REMOVAL:
US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ataCdb->generic.TransferBlockSize = 1;
ataCdb->write.SelectCommand = 1;
ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
WIN_DOORLOCK : WIN_DOORUNLOCK;
srb->request_bufflen = 0;
} else {
US_DEBUGP(" Not removeable media, just report okay\n");
srb->result = GOOD;
sendToTransport = FALSE;
}
break;
case START_STOP:
US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n");
US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
/* Initialize the return buffer */
isd200_data_copy(srb, (char *) &senseData, 8);
if ((srb->cmnd[4] & 0x3) == 0x2) {
US_DEBUGP(" Media Eject\n");
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ataCdb->generic.TransferBlockSize = 0;
ataCdb->write.SelectCommand = 1;
ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
} else if ((srb->cmnd[4] & 0x3) == 0x1) {
US_DEBUGP(" Get Media Status\n");
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
ataCdb->generic.TransferBlockSize = 1;
ataCdb->write.SelectCommand = 1;
ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
srb->request_bufflen = 0;
} else {
US_DEBUGP(" Nothing to do, just report okay\n");
srb->result = GOOD;
sendToTransport = FALSE;
}
break;
default:
US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
srb->result = DID_ERROR << 16;
sendToTransport = FALSE;
break;
}
return(sendToTransport);
}
/**************************************************************************
* isd200_init_info
*
* Allocates (if necessary) and initializes the driver structure.
*
* RETURNS:
* ISD status code
*/
int isd200_init_info(struct us_data *us)
{
int retStatus = ISD200_GOOD;
if (!us->extra) {
us->extra = (void *) kmalloc(sizeof(struct isd200_info), GFP_KERNEL);
if (!us->extra) {
US_DEBUGP("ERROR - kmalloc failure\n");
retStatus = ISD200_ERROR;
}
}
if (retStatus == ISD200_GOOD) {
memset(us->extra, 0, sizeof(struct isd200_info));
}
return(retStatus);
}
/**************************************************************************
* Initialization for the ISD200
*/
int isd200_Initialization(struct us_data *us)
{
US_DEBUGP("ISD200 Initialization...\n");
/* Initialize ISD200 info struct */
if (isd200_init_info(us) == ISD200_ERROR) {
US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
} else {
/* Get device specific data */
if (isd200_get_inquiry_data(us) != ISD200_GOOD)
US_DEBUGP("ISD200 Initialization Failure\n");
else
US_DEBUGP("ISD200 Initialization complete\n");
}
return 0;
}
/**************************************************************************
* Protocol and Transport for the ISD200 ASIC
*
* This protocol and transport are for ATA devices connected to an ISD200
* ASIC. An ATAPI device that is conected as a slave device will be
* detected in the driver initialization function and the protocol will
* be changed to an ATAPI protocol (Transparent SCSI).
*
*/
void isd200_ata_command(Scsi_Cmnd *srb, struct us_data *us)
{
int sendToTransport = TRUE;
union ata_cdb ataCdb;
/* Make sure driver was initialized */
if (us->extra == NULL)
US_DEBUGP("ERROR Driver not initialized\n");
/* Convert command */
sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
/* send the command to the transport layer */
if (sendToTransport)
isd200_invoke_transport(us, srb, &ataCdb);
}
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