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linux_dsm_epyc7002/drivers/usb/storage/isd200.c
Linus Torvalds e070355664 Modules updates for v5.4 
Summary of modules changes for the 5.4 merge window:
 
 - Introduce exported symbol namespaces.
 
   This new feature allows subsystem maintainers to partition and
   categorize their exported symbols into explicit namespaces. Module
   authors are now required to import the namespaces they need.
 
   Some of the main motivations of this feature include: allowing kernel
   developers to better manage the export surface, allow subsystem
   maintainers to explicitly state that usage of some exported symbols
   should only be limited to certain users (think: inter-module or
   inter-driver symbols, debugging symbols, etc), as well as more easily
   limiting the availability of namespaced symbols to other parts of the
   kernel. With the module import requirement, it is also easier to spot
   the misuse of exported symbols during patch review. Two new macros are
   introduced: EXPORT_SYMBOL_NS() and EXPORT_SYMBOL_NS_GPL(). The API is
   thoroughly documented in Documentation/kbuild/namespaces.rst.
 
 - Some small code and kbuild cleanups here and there.
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Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull modules updates from Jessica Yu:
 "The main bulk of this pull request introduces a new exported symbol
  namespaces feature. The number of exported symbols is increasingly
  growing with each release (we're at about 31k exports as of 5.3-rc7)
  and we currently have no way of visualizing how these symbols are
  "clustered" or making sense of this huge export surface.

  Namespacing exported symbols allows kernel developers to more
  explicitly partition and categorize exported symbols, as well as more
  easily limiting the availability of namespaced symbols to other parts
  of the kernel. For starters, we have introduced the USB_STORAGE
  namespace to demonstrate the API's usage. I have briefly summarized
  the feature and its main motivations in the tag below.

  Summary:

   - Introduce exported symbol namespaces.

     This new feature allows subsystem maintainers to partition and
     categorize their exported symbols into explicit namespaces. Module
     authors are now required to import the namespaces they need.

     Some of the main motivations of this feature include: allowing
     kernel developers to better manage the export surface, allow
     subsystem maintainers to explicitly state that usage of some
     exported symbols should only be limited to certain users (think:
     inter-module or inter-driver symbols, debugging symbols, etc), as
     well as more easily limiting the availability of namespaced symbols
     to other parts of the kernel.

     With the module import requirement, it is also easier to spot the
     misuse of exported symbols during patch review.

     Two new macros are introduced: EXPORT_SYMBOL_NS() and
     EXPORT_SYMBOL_NS_GPL(). The API is thoroughly documented in
     Documentation/kbuild/namespaces.rst.

   - Some small code and kbuild cleanups here and there"

* tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: Remove leftover '#undef' from export header
  module: remove unneeded casts in cmp_name()
  module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES
  module: remove redundant 'depends on MODULES'
  module: Fix link failure due to invalid relocation on namespace offset
  usb-storage: export symbols in USB_STORAGE namespace
  usb-storage: remove single-use define for debugging
  docs: Add documentation for Symbol Namespaces
  scripts: Coccinelle script for namespace dependencies.
  modpost: add support for generating namespace dependencies
  export: allow definition default namespaces in Makefiles or sources
  module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
  modpost: add support for symbol namespaces
  module: add support for symbol namespaces.
  export: explicitly align struct kernel_symbol
  module: support reading multiple values per modinfo tag
2019-09-22 10:34:46 -07:00

1574 lines
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// 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>
#include <linux/slab.h>
#include <linux/ata.h>
#include <linux/hdreg.h>
#include <linux/scatterlist.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include "usb.h"
#include "transport.h"
#include "protocol.h"
#include "debug.h"
#include "scsiglue.h"
#define DRV_NAME "ums-isd200"
MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
MODULE_LICENSE("GPL");
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[] = {
# include "unusual_isd200.h"
{ } /* 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
#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 removeable 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);
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