| /* | |
| * 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. | |
| * | |
| * This program is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License as published by the | |
| * Free Software Foundation; either version 2, or (at your option) any | |
| * later version. | |
| * | |
| * This program is distributed in the hope that it will be useful, but | |
| * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU General Public License along | |
| * with this program; if not, write to the Free Software Foundation, Inc., | |
| * 675 Mass Ave, Cambridge, MA 02139, USA. | |
| * | |
| * History: | |
| * | |
| * 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"); | |
| 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 = 1, orig_bufflen; | |
| union ata_cdb ataCdb; | |
| /* Make sure driver was initialized */ | |
| if (us->extra == NULL) | |
| usb_stor_dbg(us, "ERROR Driver not initialized\n"); | |
| 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); |