// SPDX-License-Identifier: GPL-2.0+
|
/*
|
* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
|
*
|
* Current development and maintenance:
|
* (C) 2001-2002 Björn Stenberg (bjorn@haxx.se)
|
*
|
* Developed with the assistance of:
|
* (C) 2002 Alan Stern <stern@rowland.org>
|
*
|
* Initial work:
|
* (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.
|
*
|
* History:
|
*
|
* 2002-10-19: Removed the specialized transfer routines.
|
* (Alan Stern <stern@rowland.harvard.edu>)
|
* 2001-02-24: Removed lots of duplicate code and simplified the structure.
|
* (bjorn@haxx.se)
|
* 2002-01-16: Fixed endianness bug so it works on the ppc arch.
|
* (Luc Saillard <luc@saillard.org>)
|
* 2002-01-17: All bitfields removed.
|
* (bjorn@haxx.se)
|
*/
|
|
|
/* Include files */
|
|
#include <linux/jiffies.h>
|
#include <linux/errno.h>
|
#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/ata.h>
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#include <linux/hdreg.h>
|
#include <linux/scatterlist.h>
|
|
#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
|
|
#include "usb.h"
|
#include "transport.h"
|
#include "protocol.h"
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#include "debug.h"
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#include "scsiglue.h"
|
|
#define DRV_NAME "ums-isd200"
|
|
MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
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MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(USB_STORAGE);
|
|
static int isd200_Initialization(struct us_data *us);
|
|
|
/*
|
* The table of devices
|
*/
|
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
|
vendorName, productName, useProtocol, useTransport, \
|
initFunction, flags) \
|
{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
|
.driver_info = (flags) }
|
|
static struct usb_device_id isd200_usb_ids[] = {
|
# include "unusual_isd200.h"
|
{ } /* Terminating entry */
|
};
|
MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
|
|
#undef UNUSUAL_DEV
|
|
/*
|
* The flags table
|
*/
|
#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
|
vendor_name, product_name, use_protocol, use_transport, \
|
init_function, Flags) \
|
{ \
|
.vendorName = vendor_name, \
|
.productName = product_name, \
|
.useProtocol = use_protocol, \
|
.useTransport = use_transport, \
|
.initFunction = init_function, \
|
}
|
|
static struct us_unusual_dev isd200_unusual_dev_list[] = {
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# include "unusual_isd200.h"
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{ } /* Terminating entry */
|
};
|
|
#undef UNUSUAL_DEV
|
|
/* 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
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#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
|
|
/* Register Select bits */
|
#define REG_ALTERNATE_STATUS 0x01
|
#define REG_DEVICE_CONTROL 0x01
|
#define REG_ERROR 0x02
|
#define REG_FEATURES 0x02
|
#define REG_SECTOR_COUNT 0x04
|
#define REG_SECTOR_NUMBER 0x08
|
#define REG_CYLINDER_LOW 0x10
|
#define REG_CYLINDER_HIGH 0x20
|
#define REG_DEVICE_HEAD 0x40
|
#define REG_STATUS 0x80
|
#define REG_COMMAND 0x80
|
|
/* ATA registers offset definitions */
|
#define ATA_REG_ERROR_OFFSET 1
|
#define ATA_REG_LCYL_OFFSET 4
|
#define ATA_REG_HCYL_OFFSET 5
|
#define ATA_REG_STATUS_OFFSET 7
|
|
/* 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) */
|
|
/* 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 ActionSelect;
|
unsigned char RegisterSelect;
|
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 ActionSelect;
|
unsigned char RegisterSelect;
|
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.
|
*/
|
|
/*
|
* DeviceType field
|
*/
|
#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
|
#define DEVICE_REMOVABLE 0x80
|
|
struct inquiry_data {
|
unsigned char DeviceType;
|
unsigned char DeviceTypeModifier;
|
unsigned char Versions;
|
unsigned char Format;
|
unsigned char AdditionalLength;
|
unsigned char Reserved[2];
|
unsigned char Capability;
|
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
|
*/
|
|
#define ATACFG_TIMING 0x0f
|
#define ATACFG_ATAPI_RESET 0x10
|
#define ATACFG_MASTER 0x20
|
#define ATACFG_BLOCKSIZE 0xa0
|
|
#define ATACFGE_LAST_LUN 0x07
|
#define ATACFGE_DESC_OVERRIDE 0x08
|
#define ATACFGE_STATE_SUSPEND 0x10
|
#define ATACFGE_SKIP_BOOT 0x20
|
#define ATACFGE_CONF_DESC2 0x40
|
#define ATACFGE_INIT_STATUS 0x80
|
|
#define CFG_CAPABILITY_SRST 0x01
|
|
struct isd200_config {
|
unsigned char EventNotification;
|
unsigned char ExternalClock;
|
unsigned char ATAInitTimeout;
|
unsigned char ATAConfig;
|
unsigned char ATAMajorCommand;
|
unsigned char ATAMinorCommand;
|
unsigned char ATAExtraConfig;
|
unsigned char Capability;
|
}__attribute__ ((packed));
|
|
|
/*
|
* ISD200 driver information struct
|
*/
|
|
struct isd200_info {
|
struct inquiry_data InquiryData;
|
u16 *id;
|
struct isd200_config ConfigData;
|
unsigned char *RegsBuf;
|
unsigned char ATARegs[8];
|
unsigned char DeviceHead;
|
unsigned char DeviceFlags;
|
|
/* maximum number of LUNs supported */
|
unsigned char MaxLUNs;
|
unsigned char cmnd[BLK_MAX_CDB];
|
struct scsi_cmnd srb;
|
struct scatterlist sg;
|
};
|
|
|
/*
|
* Read Capacity Data - returned in Big Endian format
|
*/
|
|
struct read_capacity_data {
|
__be32 LogicalBlockAddress;
|
__be32 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
|
*/
|
|
#define SENSE_ERRCODE 0x7f
|
#define SENSE_ERRCODE_VALID 0x80
|
#define SENSE_FLAG_SENSE_KEY 0x0f
|
#define SENSE_FLAG_BAD_LENGTH 0x20
|
#define SENSE_FLAG_END_OF_MEDIA 0x40
|
#define SENSE_FLAG_FILE_MARK 0x80
|
struct sense_data {
|
unsigned char ErrorCode;
|
unsigned char SegmentNumber;
|
unsigned char Flags;
|
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
|
*/
|
static void isd200_build_sense(struct us_data *us, struct 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[ATA_REG_ERROR_OFFSET];
|
|
if(error & ATA_ERROR_MEDIA_CHANGE) {
|
buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
|
buf->AdditionalSenseLength = 0xb;
|
buf->Flags = UNIT_ATTENTION;
|
buf->AdditionalSenseCode = 0;
|
buf->AdditionalSenseCodeQualifier = 0;
|
} else if (error & ATA_MCR) {
|
buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
|
buf->AdditionalSenseLength = 0xb;
|
buf->Flags = UNIT_ATTENTION;
|
buf->AdditionalSenseCode = 0;
|
buf->AdditionalSenseCodeQualifier = 0;
|
} else if (error & ATA_TRK0NF) {
|
buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
|
buf->AdditionalSenseLength = 0xb;
|
buf->Flags = NOT_READY;
|
buf->AdditionalSenseCode = 0;
|
buf->AdditionalSenseCodeQualifier = 0;
|
} else if (error & ATA_UNC) {
|
buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
|
buf->AdditionalSenseLength = 0xb;
|
buf->Flags = DATA_PROTECT;
|
buf->AdditionalSenseCode = 0;
|
buf->AdditionalSenseCodeQualifier = 0;
|
} else {
|
buf->ErrorCode = 0;
|
buf->AdditionalSenseLength = 0;
|
buf->Flags = 0;
|
buf->AdditionalSenseCode = 0;
|
buf->AdditionalSenseCodeQualifier = 0;
|
}
|
}
|
|
|
/***********************************************************************
|
* Transport routines
|
***********************************************************************/
|
|
/**************************************************************************
|
* isd200_set_srb(), isd200_srb_set_bufflen()
|
*
|
* Two helpers to facilitate in initialization of scsi_cmnd structure
|
* Will need to change when struct scsi_cmnd changes
|
*/
|
static void isd200_set_srb(struct isd200_info *info,
|
enum dma_data_direction dir, void* buff, unsigned bufflen)
|
{
|
struct scsi_cmnd *srb = &info->srb;
|
|
if (buff)
|
sg_init_one(&info->sg, buff, bufflen);
|
|
srb->sc_data_direction = dir;
|
srb->sdb.table.sgl = buff ? &info->sg : NULL;
|
srb->sdb.length = bufflen;
|
srb->sdb.table.nents = buff ? 1 : 0;
|
}
|
|
static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
|
{
|
srb->sdb.length = bufflen;
|
}
|
|
|
/**************************************************************************
|
* 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;
|
/* static to prevent this large struct being placed on the valuable stack */
|
static struct scsi_device srb_dev;
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
struct scsi_cmnd *srb = &info->srb;
|
int status;
|
|
memset(&ata, 0, sizeof(ata));
|
srb->cmnd = info->cmnd;
|
srb->device = &srb_dev;
|
|
ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
ata.generic.TransferBlockSize = 1;
|
|
switch ( action ) {
|
case ACTION_READ_STATUS:
|
usb_stor_dbg(us, " isd200_action(READ_STATUS)\n");
|
ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
|
ata.generic.RegisterSelect =
|
REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
|
REG_STATUS | REG_ERROR;
|
isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
|
break;
|
|
case ACTION_ENUM:
|
usb_stor_dbg(us, " 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.generic.RegisterSelect = REG_DEVICE_HEAD;
|
ata.write.DeviceHeadByte = value;
|
isd200_set_srb(info, DMA_NONE, NULL, 0);
|
break;
|
|
case ACTION_RESET:
|
usb_stor_dbg(us, " isd200_action(RESET)\n");
|
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
|
ACTION_SELECT_3|ACTION_SELECT_4;
|
ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
|
ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
|
isd200_set_srb(info, DMA_NONE, NULL, 0);
|
break;
|
|
case ACTION_REENABLE:
|
usb_stor_dbg(us, " isd200_action(REENABLE)\n");
|
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
|
ACTION_SELECT_3|ACTION_SELECT_4;
|
ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
|
ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
|
isd200_set_srb(info, DMA_NONE, NULL, 0);
|
break;
|
|
case ACTION_SOFT_RESET:
|
usb_stor_dbg(us, " isd200_action(SOFT_RESET)\n");
|
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
|
ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
|
ata.write.DeviceHeadByte = info->DeviceHead;
|
ata.write.CommandByte = ATA_CMD_DEV_RESET;
|
isd200_set_srb(info, DMA_NONE, NULL, 0);
|
break;
|
|
case ACTION_IDENTIFY:
|
usb_stor_dbg(us, " isd200_action(IDENTIFY)\n");
|
ata.generic.RegisterSelect = REG_COMMAND;
|
ata.write.CommandByte = ATA_CMD_ID_ATA;
|
isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
|
ATA_ID_WORDS * 2);
|
break;
|
|
default:
|
usb_stor_dbg(us, "Error: Undefined action %d\n", action);
|
return ISD200_ERROR;
|
}
|
|
memcpy(srb->cmnd, &ata, sizeof(ata.generic));
|
srb->cmd_len = sizeof(ata.generic);
|
status = usb_stor_Bulk_transport(srb, us);
|
if (status == USB_STOR_TRANSPORT_GOOD)
|
status = ISD200_GOOD;
|
else {
|
usb_stor_dbg(us, " 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
|
*/
|
static int isd200_read_regs( struct us_data *us )
|
{
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
int retStatus = ISD200_GOOD;
|
int transferStatus;
|
|
usb_stor_dbg(us, "Entering isd200_IssueATAReadRegs\n");
|
|
transferStatus = isd200_action( us, ACTION_READ_STATUS,
|
info->RegsBuf, sizeof(info->ATARegs) );
|
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
usb_stor_dbg(us, " Error reading ATA registers\n");
|
retStatus = ISD200_ERROR;
|
} else {
|
memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
|
usb_stor_dbg(us, " Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
|
info->ATARegs[ATA_REG_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 receive the response.
|
*/
|
static void isd200_invoke_transport( struct us_data *us,
|
struct scsi_cmnd *srb,
|
union ata_cdb *ataCdb )
|
{
|
int need_auto_sense = 0;
|
int transferStatus;
|
int result;
|
|
/* send the command to the transport layer */
|
memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
|
srb->cmd_len = sizeof(ataCdb->generic);
|
transferStatus = usb_stor_Bulk_transport(srb, us);
|
|
/*
|
* if the command gets aborted by the higher layers, we need to
|
* short-circuit all other processing
|
*/
|
if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
|
usb_stor_dbg(us, "-- command was aborted\n");
|
goto Handle_Abort;
|
}
|
|
switch (transferStatus) {
|
|
case USB_STOR_TRANSPORT_GOOD:
|
/* Indicate a good result */
|
srb->result = SAM_STAT_GOOD;
|
break;
|
|
case USB_STOR_TRANSPORT_NO_SENSE:
|
usb_stor_dbg(us, "-- transport indicates protocol failure\n");
|
srb->result = SAM_STAT_CHECK_CONDITION;
|
return;
|
|
case USB_STOR_TRANSPORT_FAILED:
|
usb_stor_dbg(us, "-- transport indicates command failure\n");
|
need_auto_sense = 1;
|
break;
|
|
case USB_STOR_TRANSPORT_ERROR:
|
usb_stor_dbg(us, "-- transport indicates transport error\n");
|
srb->result = DID_ERROR << 16;
|
/* Need reset here */
|
return;
|
|
default:
|
usb_stor_dbg(us, "-- transport indicates unknown error\n");
|
srb->result = DID_ERROR << 16;
|
/* Need reset here */
|
return;
|
}
|
|
if ((scsi_get_resid(srb) > 0) &&
|
!((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))) {
|
usb_stor_dbg(us, "-- unexpectedly short transfer\n");
|
need_auto_sense = 1;
|
}
|
|
if (need_auto_sense) {
|
result = isd200_read_regs(us);
|
if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
|
usb_stor_dbg(us, "-- auto-sense aborted\n");
|
goto Handle_Abort;
|
}
|
if (result == ISD200_GOOD) {
|
isd200_build_sense(us, srb);
|
srb->result = SAM_STAT_CHECK_CONDITION;
|
|
/* If things are really okay, then let's show that */
|
if ((srb->sense_buffer[2] & 0xf) == 0x0)
|
srb->result = SAM_STAT_GOOD;
|
} else {
|
srb->result = DID_ERROR << 16;
|
/* Need reset here */
|
}
|
}
|
|
/*
|
* Regardless of auto-sense, if we _know_ we have an error
|
* condition, show that in the result code
|
*/
|
if (transferStatus == USB_STOR_TRANSPORT_FAILED)
|
srb->result = SAM_STAT_CHECK_CONDITION;
|
return;
|
|
/*
|
* abort processing: the bulk-only transport requires a reset
|
* following an abort
|
*/
|
Handle_Abort:
|
srb->result = DID_ABORT << 16;
|
|
/* permit the reset transfer to take place */
|
clear_bit(US_FLIDX_ABORTING, &us->dflags);
|
/* Need reset here */
|
}
|
|
#ifdef CONFIG_USB_STORAGE_DEBUG
|
static void isd200_log_config(struct us_data *us, struct isd200_info *info)
|
{
|
usb_stor_dbg(us, " Event Notification: 0x%x\n",
|
info->ConfigData.EventNotification);
|
usb_stor_dbg(us, " External Clock: 0x%x\n",
|
info->ConfigData.ExternalClock);
|
usb_stor_dbg(us, " ATA Init Timeout: 0x%x\n",
|
info->ConfigData.ATAInitTimeout);
|
usb_stor_dbg(us, " ATAPI Command Block Size: 0x%x\n",
|
(info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
|
usb_stor_dbg(us, " Master/Slave Selection: 0x%x\n",
|
info->ConfigData.ATAConfig & ATACFG_MASTER);
|
usb_stor_dbg(us, " ATAPI Reset: 0x%x\n",
|
info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
|
usb_stor_dbg(us, " ATA Timing: 0x%x\n",
|
info->ConfigData.ATAConfig & ATACFG_TIMING);
|
usb_stor_dbg(us, " ATA Major Command: 0x%x\n",
|
info->ConfigData.ATAMajorCommand);
|
usb_stor_dbg(us, " ATA Minor Command: 0x%x\n",
|
info->ConfigData.ATAMinorCommand);
|
usb_stor_dbg(us, " Init Status: 0x%x\n",
|
info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
|
usb_stor_dbg(us, " Config Descriptor 2: 0x%x\n",
|
info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
|
usb_stor_dbg(us, " Skip Device Boot: 0x%x\n",
|
info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
|
usb_stor_dbg(us, " ATA 3 State Suspend: 0x%x\n",
|
info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
|
usb_stor_dbg(us, " Descriptor Override: 0x%x\n",
|
info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
|
usb_stor_dbg(us, " Last LUN Identifier: 0x%x\n",
|
info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
|
usb_stor_dbg(us, " SRST Enable: 0x%x\n",
|
info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
|
}
|
#endif
|
|
/**************************************************************************
|
* isd200_write_config
|
*
|
* Write the ISD200 Configuration data
|
*
|
* RETURNS:
|
* ISD status code
|
*/
|
static int isd200_write_config( struct us_data *us )
|
{
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
int retStatus = ISD200_GOOD;
|
int result;
|
|
#ifdef CONFIG_USB_STORAGE_DEBUG
|
usb_stor_dbg(us, "Entering isd200_write_config\n");
|
usb_stor_dbg(us, " Writing the following ISD200 Config Data:\n");
|
isd200_log_config(us, info);
|
#endif
|
|
/* let's send the command via the control pipe */
|
result = usb_stor_ctrl_transfer(
|
us,
|
us->send_ctrl_pipe,
|
0x01,
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
|
0x0000,
|
0x0002,
|
(void *) &info->ConfigData,
|
sizeof(info->ConfigData));
|
|
if (result >= 0) {
|
usb_stor_dbg(us, " ISD200 Config Data was written successfully\n");
|
} else {
|
usb_stor_dbg(us, " Request to write ISD200 Config Data failed!\n");
|
retStatus = ISD200_ERROR;
|
}
|
|
usb_stor_dbg(us, "Leaving isd200_write_config %08X\n", retStatus);
|
return retStatus;
|
}
|
|
|
/**************************************************************************
|
* isd200_read_config
|
*
|
* Reads the ISD200 Configuration data
|
*
|
* RETURNS:
|
* ISD status code
|
*/
|
static int isd200_read_config( struct us_data *us )
|
{
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
int retStatus = ISD200_GOOD;
|
int result;
|
|
usb_stor_dbg(us, "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_ctrl_transfer(
|
us,
|
us->recv_ctrl_pipe,
|
0x02,
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
0x0000,
|
0x0002,
|
(void *) &info->ConfigData,
|
sizeof(info->ConfigData));
|
|
|
if (result >= 0) {
|
usb_stor_dbg(us, " Retrieved the following ISD200 Config Data:\n");
|
#ifdef CONFIG_USB_STORAGE_DEBUG
|
isd200_log_config(us, info);
|
#endif
|
} else {
|
usb_stor_dbg(us, " Request to get ISD200 Config Data failed!\n");
|
retStatus = ISD200_ERROR;
|
}
|
|
usb_stor_dbg(us, "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
|
*/
|
static int isd200_atapi_soft_reset( struct us_data *us )
|
{
|
int retStatus = ISD200_GOOD;
|
int transferStatus;
|
|
usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n");
|
|
transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
|
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
usb_stor_dbg(us, " Error issuing Atapi Soft Reset\n");
|
retStatus = ISD200_ERROR;
|
}
|
|
usb_stor_dbg(us, "Leaving isd200_atapi_soft_reset %08X\n", retStatus);
|
return retStatus;
|
}
|
|
|
/**************************************************************************
|
* isd200_srst
|
*
|
* Perform an SRST on the device
|
*
|
* RETURNS:
|
* ISD status code
|
*/
|
static int isd200_srst( struct us_data *us )
|
{
|
int retStatus = ISD200_GOOD;
|
int transferStatus;
|
|
usb_stor_dbg(us, "Entering isd200_SRST\n");
|
|
transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
|
|
/* check to see if this request failed */
|
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
usb_stor_dbg(us, " Error issuing SRST\n");
|
retStatus = ISD200_ERROR;
|
} else {
|
/* delay 10ms to give the drive a chance to see it */
|
msleep(10);
|
|
transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
|
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
usb_stor_dbg(us, " Error taking drive out of reset\n");
|
retStatus = ISD200_ERROR;
|
} else {
|
/* delay 50ms to give the drive a chance to recover after SRST */
|
msleep(50);
|
}
|
}
|
|
usb_stor_dbg(us, "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 long endTime;
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
unsigned char *regs = info->RegsBuf;
|
int recheckAsMaster = 0;
|
|
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(1) {
|
|
status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
|
if ( status != ISD200_GOOD )
|
break;
|
|
status = isd200_action( us, ACTION_READ_STATUS,
|
regs, 8 );
|
if ( status != ISD200_GOOD )
|
break;
|
|
if (!detect) {
|
if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) {
|
usb_stor_dbg(us, " %s status is still BSY, try again...\n",
|
master_slave == ATA_ADDRESS_DEVHEAD_STD ?
|
"Master" : "Slave");
|
} else {
|
usb_stor_dbg(us, " %s status !BSY, continue with next operation\n",
|
master_slave == ATA_ADDRESS_DEVHEAD_STD ?
|
"Master" : "Slave");
|
break;
|
}
|
}
|
/* check for ATA_BUSY and */
|
/* ATA_DF (workaround ATA Zip drive) and */
|
/* ATA_ERR (workaround for Archos CD-ROM) */
|
else if (regs[ATA_REG_STATUS_OFFSET] &
|
(ATA_BUSY | ATA_DF | ATA_ERR)) {
|
usb_stor_dbg(us, " Status indicates it is not ready, try again...\n");
|
}
|
/* check for DRDY, ATA devices set DRDY after SRST */
|
else if (regs[ATA_REG_STATUS_OFFSET] & ATA_DRDY) {
|
usb_stor_dbg(us, " 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[ATA_REG_HCYL_OFFSET] == 0xEB &&
|
regs[ATA_REG_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) {
|
usb_stor_dbg(us, " Identified ATAPI device as slave. Rechecking again as master\n");
|
recheckAsMaster = 1;
|
master_slave = ATA_ADDRESS_DEVHEAD_STD;
|
} else {
|
usb_stor_dbg(us, " Identified ATAPI device\n");
|
info->DeviceHead = master_slave;
|
|
status = isd200_atapi_soft_reset(us);
|
break;
|
}
|
} else {
|
usb_stor_dbg(us, " Not ATA, not ATAPI - Weird\n");
|
break;
|
}
|
|
/* check for timeout on this request */
|
if (time_after_eq(jiffies, endTime)) {
|
if (!detect)
|
usb_stor_dbg(us, " BSY check timeout, just continue with next operation...\n");
|
else
|
usb_stor_dbg(us, " 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
|
*/
|
static int isd200_manual_enum(struct us_data *us)
|
{
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
int retStatus = ISD200_GOOD;
|
|
usb_stor_dbg(us, "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, 0);
|
if (retStatus == ISD200_GOOD)
|
retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
|
|
if (retStatus == ISD200_GOOD) {
|
retStatus = isd200_srst(us);
|
if (retStatus == ISD200_GOOD)
|
/* ata or atapi? */
|
retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
|
}
|
|
isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
|
if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
|
usb_stor_dbg(us, " Setting Master/Slave selection to %d\n",
|
isslave);
|
info->ConfigData.ATAConfig &= 0x3f;
|
info->ConfigData.ATAConfig |= (isslave<<6);
|
retStatus = isd200_write_config(us);
|
}
|
}
|
|
usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus);
|
return(retStatus);
|
}
|
|
static void isd200_fix_driveid(u16 *id)
|
{
|
#ifndef __LITTLE_ENDIAN
|
# ifdef __BIG_ENDIAN
|
int i;
|
|
for (i = 0; i < ATA_ID_WORDS; i++)
|
id[i] = __le16_to_cpu(id[i]);
|
# else
|
# error "Please fix <asm/byteorder.h>"
|
# endif
|
#endif
|
}
|
|
static void isd200_dump_driveid(struct us_data *us, u16 *id)
|
{
|
usb_stor_dbg(us, " Identify Data Structure:\n");
|
usb_stor_dbg(us, " config = 0x%x\n", id[ATA_ID_CONFIG]);
|
usb_stor_dbg(us, " cyls = 0x%x\n", id[ATA_ID_CYLS]);
|
usb_stor_dbg(us, " heads = 0x%x\n", id[ATA_ID_HEADS]);
|
usb_stor_dbg(us, " track_bytes = 0x%x\n", id[4]);
|
usb_stor_dbg(us, " sector_bytes = 0x%x\n", id[5]);
|
usb_stor_dbg(us, " sectors = 0x%x\n", id[ATA_ID_SECTORS]);
|
usb_stor_dbg(us, " serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
|
usb_stor_dbg(us, " buf_type = 0x%x\n", id[20]);
|
usb_stor_dbg(us, " buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
|
usb_stor_dbg(us, " ecc_bytes = 0x%x\n", id[22]);
|
usb_stor_dbg(us, " fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
|
usb_stor_dbg(us, " model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
|
usb_stor_dbg(us, " max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
|
usb_stor_dbg(us, " dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
|
usb_stor_dbg(us, " capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
|
usb_stor_dbg(us, " tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
|
usb_stor_dbg(us, " tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
|
usb_stor_dbg(us, " field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
|
usb_stor_dbg(us, " cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
|
usb_stor_dbg(us, " cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
|
usb_stor_dbg(us, " cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
|
usb_stor_dbg(us, " cur_capacity = 0x%x\n", ata_id_u32(id, 57));
|
usb_stor_dbg(us, " multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
|
usb_stor_dbg(us, " lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
|
usb_stor_dbg(us, " command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
|
usb_stor_dbg(us, " command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]);
|
}
|
|
/**************************************************************************
|
* isd200_get_inquiry_data
|
*
|
* Get inquiry data
|
*
|
* RETURNS:
|
* ISD status code
|
*/
|
static int isd200_get_inquiry_data( struct us_data *us )
|
{
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
int retStatus = ISD200_GOOD;
|
u16 *id = info->id;
|
|
usb_stor_dbg(us, "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 Command Identify */
|
transferStatus = isd200_action( us, ACTION_IDENTIFY,
|
id, ATA_ID_WORDS * 2);
|
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
/* Error issuing ATA Command Identify */
|
usb_stor_dbg(us, " Error issuing ATA Command Identify\n");
|
retStatus = ISD200_ERROR;
|
} else {
|
/* ATA Command Identify successful */
|
int i;
|
__be16 *src;
|
__u16 *dest;
|
|
isd200_fix_driveid(id);
|
isd200_dump_driveid(us, id);
|
|
memset(&info->InquiryData, 0, sizeof(info->InquiryData));
|
|
/* Standard IDE interface only supports disks */
|
info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
|
|
/* The length must be at least 36 (5 + 31) */
|
info->InquiryData.AdditionalLength = 0x1F;
|
|
if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) {
|
/* set the removable bit */
|
info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
|
info->DeviceFlags |= DF_REMOVABLE_MEDIA;
|
}
|
|
/* Fill in vendor identification fields */
|
src = (__be16 *)&id[ATA_ID_PROD];
|
dest = (__u16*)info->InquiryData.VendorId;
|
for (i = 0; i < 4; i++)
|
dest[i] = be16_to_cpu(src[i]);
|
|
src = (__be16 *)&id[ATA_ID_PROD + 8/2];
|
dest = (__u16*)info->InquiryData.ProductId;
|
for (i=0;i<8;i++)
|
dest[i] = be16_to_cpu(src[i]);
|
|
src = (__be16 *)&id[ATA_ID_FW_REV];
|
dest = (__u16*)info->InquiryData.ProductRevisionLevel;
|
for (i=0;i<2;i++)
|
dest[i] = be16_to_cpu(src[i]);
|
|
/* determine if it supports Media Status Notification */
|
if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) {
|
usb_stor_dbg(us, " 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;
|
|
usb_stor_dbg(us, "Protocol changed to: %s\n",
|
us->protocol_name);
|
|
/* Free driver structure */
|
us->extra_destructor(info);
|
kfree(info);
|
us->extra = NULL;
|
us->extra_destructor = NULL;
|
}
|
}
|
|
usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus);
|
|
return(retStatus);
|
}
|
|
/**************************************************************************
|
* isd200_scsi_to_ata
|
*
|
* Translate SCSI commands to ATA commands.
|
*
|
* RETURNS:
|
* 1 if the command needs to be sent to the transport layer
|
* 0 otherwise
|
*/
|
static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
|
union ata_cdb * ataCdb)
|
{
|
struct isd200_info *info = (struct isd200_info *)us->extra;
|
u16 *id = info->id;
|
int sendToTransport = 1;
|
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:
|
usb_stor_dbg(us, " ATA OUT - INQUIRY\n");
|
|
/* copy InquiryData */
|
usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
|
sizeof(info->InquiryData), srb);
|
srb->result = SAM_STAT_GOOD;
|
sendToTransport = 0;
|
break;
|
|
case MODE_SENSE:
|
usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n");
|
|
/* Initialize the return buffer */
|
usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
|
|
if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
|
{
|
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
ataCdb->generic.TransferBlockSize = 1;
|
ataCdb->generic.RegisterSelect = REG_COMMAND;
|
ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
|
isd200_srb_set_bufflen(srb, 0);
|
} else {
|
usb_stor_dbg(us, " Media Status not supported, just report okay\n");
|
srb->result = SAM_STAT_GOOD;
|
sendToTransport = 0;
|
}
|
break;
|
|
case TEST_UNIT_READY:
|
usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n");
|
|
if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
|
{
|
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
ataCdb->generic.TransferBlockSize = 1;
|
ataCdb->generic.RegisterSelect = REG_COMMAND;
|
ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
|
isd200_srb_set_bufflen(srb, 0);
|
} else {
|
usb_stor_dbg(us, " Media Status not supported, just report okay\n");
|
srb->result = SAM_STAT_GOOD;
|
sendToTransport = 0;
|
}
|
break;
|
|
case READ_CAPACITY:
|
{
|
unsigned long capacity;
|
struct read_capacity_data readCapacityData;
|
|
usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n");
|
|
if (ata_id_has_lba(id))
|
capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1;
|
else
|
capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] *
|
id[ATA_ID_SECTORS]) - 1;
|
|
readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
|
readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
|
|
usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
|
sizeof(readCapacityData), srb);
|
srb->result = SAM_STAT_GOOD;
|
sendToTransport = 0;
|
}
|
break;
|
|
case READ_10:
|
usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n");
|
|
lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
|
blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
|
|
if (ata_id_has_lba(id)) {
|
sectnum = (unsigned char)(lba);
|
cylinder = (unsigned short)(lba>>8);
|
head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
|
} else {
|
sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
|
cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
|
id[ATA_ID_HEADS]));
|
head = (u8)((lba / id[ATA_ID_SECTORS]) %
|
id[ATA_ID_HEADS]);
|
}
|
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
ataCdb->generic.TransferBlockSize = 1;
|
ataCdb->generic.RegisterSelect =
|
REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
|
REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
|
REG_DEVICE_HEAD | REG_COMMAND;
|
ataCdb->write.SectorCountByte = (unsigned char)blockCount;
|
ataCdb->write.SectorNumberByte = sectnum;
|
ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
|
ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
|
ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
|
ataCdb->write.CommandByte = ATA_CMD_PIO_READ;
|
break;
|
|
case WRITE_10:
|
usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n");
|
|
lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
|
blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
|
|
if (ata_id_has_lba(id)) {
|
sectnum = (unsigned char)(lba);
|
cylinder = (unsigned short)(lba>>8);
|
head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
|
} else {
|
sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1);
|
cylinder = (u16)(lba / (id[ATA_ID_SECTORS] *
|
id[ATA_ID_HEADS]));
|
head = (u8)((lba / id[ATA_ID_SECTORS]) %
|
id[ATA_ID_HEADS]);
|
}
|
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
ataCdb->generic.TransferBlockSize = 1;
|
ataCdb->generic.RegisterSelect =
|
REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
|
REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
|
REG_DEVICE_HEAD | REG_COMMAND;
|
ataCdb->write.SectorCountByte = (unsigned char)blockCount;
|
ataCdb->write.SectorNumberByte = sectnum;
|
ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
|
ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
|
ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
|
ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE;
|
break;
|
|
case ALLOW_MEDIUM_REMOVAL:
|
usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
|
|
if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
|
usb_stor_dbg(us, " 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->generic.RegisterSelect = REG_COMMAND;
|
ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
|
ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
|
isd200_srb_set_bufflen(srb, 0);
|
} else {
|
usb_stor_dbg(us, " Not removable media, just report okay\n");
|
srb->result = SAM_STAT_GOOD;
|
sendToTransport = 0;
|
}
|
break;
|
|
case START_STOP:
|
usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n");
|
usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
|
|
if ((srb->cmnd[4] & 0x3) == 0x2) {
|
usb_stor_dbg(us, " Media Eject\n");
|
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
ataCdb->generic.TransferBlockSize = 0;
|
ataCdb->generic.RegisterSelect = REG_COMMAND;
|
ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
|
} else if ((srb->cmnd[4] & 0x3) == 0x1) {
|
usb_stor_dbg(us, " Get Media Status\n");
|
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
ataCdb->generic.TransferBlockSize = 1;
|
ataCdb->generic.RegisterSelect = REG_COMMAND;
|
ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
|
isd200_srb_set_bufflen(srb, 0);
|
} else {
|
usb_stor_dbg(us, " Nothing to do, just report okay\n");
|
srb->result = SAM_STAT_GOOD;
|
sendToTransport = 0;
|
}
|
break;
|
|
default:
|
usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n",
|
srb->cmnd[0]);
|
srb->result = DID_ERROR << 16;
|
sendToTransport = 0;
|
break;
|
}
|
|
return(sendToTransport);
|
}
|
|
|
/**************************************************************************
|
* isd200_free_info
|
*
|
* Frees the driver structure.
|
*/
|
static void isd200_free_info_ptrs(void *info_)
|
{
|
struct isd200_info *info = (struct isd200_info *) info_;
|
|
if (info) {
|
kfree(info->id);
|
kfree(info->RegsBuf);
|
kfree(info->srb.sense_buffer);
|
}
|
}
|
|
/**************************************************************************
|
* isd200_init_info
|
*
|
* Allocates (if necessary) and initializes the driver structure.
|
*
|
* RETURNS:
|
* ISD status code
|
*/
|
static int isd200_init_info(struct us_data *us)
|
{
|
struct isd200_info *info;
|
|
info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
|
if (!info)
|
return ISD200_ERROR;
|
|
info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
|
info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
|
info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
|
|
if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
|
isd200_free_info_ptrs(info);
|
kfree(info);
|
return ISD200_ERROR;
|
}
|
|
us->extra = info;
|
us->extra_destructor = isd200_free_info_ptrs;
|
|
return ISD200_GOOD;
|
}
|
|
/**************************************************************************
|
* Initialization for the ISD200
|
*/
|
|
static int isd200_Initialization(struct us_data *us)
|
{
|
usb_stor_dbg(us, "ISD200 Initialization...\n");
|
|
/* Initialize ISD200 info struct */
|
|
if (isd200_init_info(us) == ISD200_ERROR) {
|
usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n");
|
} else {
|
/* Get device specific data */
|
|
if (isd200_get_inquiry_data(us) != ISD200_GOOD)
|
usb_stor_dbg(us, "ISD200 Initialization Failure\n");
|
else
|
usb_stor_dbg(us, "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 connected as a slave device will be
|
* detected in the driver initialization function and the protocol will
|
* be changed to an ATAPI protocol (Transparent SCSI).
|
*
|
*/
|
|
static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
|
{
|
int sendToTransport, orig_bufflen;
|
union ata_cdb ataCdb;
|
|
/* Make sure driver was initialized */
|
|
if (us->extra == NULL) {
|
usb_stor_dbg(us, "ERROR Driver not initialized\n");
|
srb->result = DID_ERROR << 16;
|
return;
|
}
|
|
scsi_set_resid(srb, 0);
|
/* scsi_bufflen might change in protocol translation to ata */
|
orig_bufflen = scsi_bufflen(srb);
|
sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
|
|
/* send the command to the transport layer */
|
if (sendToTransport)
|
isd200_invoke_transport(us, srb, &ataCdb);
|
|
isd200_srb_set_bufflen(srb, orig_bufflen);
|
}
|
|
static struct scsi_host_template isd200_host_template;
|
|
static int isd200_probe(struct usb_interface *intf,
|
const struct usb_device_id *id)
|
{
|
struct us_data *us;
|
int result;
|
|
result = usb_stor_probe1(&us, intf, id,
|
(id - isd200_usb_ids) + isd200_unusual_dev_list,
|
&isd200_host_template);
|
if (result)
|
return result;
|
|
us->protocol_name = "ISD200 ATA/ATAPI";
|
us->proto_handler = isd200_ata_command;
|
|
result = usb_stor_probe2(us);
|
return result;
|
}
|
|
static struct usb_driver isd200_driver = {
|
.name = DRV_NAME,
|
.probe = isd200_probe,
|
.disconnect = usb_stor_disconnect,
|
.suspend = usb_stor_suspend,
|
.resume = usb_stor_resume,
|
.reset_resume = usb_stor_reset_resume,
|
.pre_reset = usb_stor_pre_reset,
|
.post_reset = usb_stor_post_reset,
|
.id_table = isd200_usb_ids,
|
.soft_unbind = 1,
|
.no_dynamic_id = 1,
|
};
|
|
module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME);
|
