diff options
Diffstat (limited to 'drivers/usb/storage/isd200.c')
| -rw-r--r-- | drivers/usb/storage/isd200.c | 1572 |
1 files changed, 1572 insertions, 0 deletions
diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c new file mode 100644 index 000000000..076178645 --- /dev/null +++ b/drivers/usb/storage/isd200.c @@ -0,0 +1,1572 @@ +/* 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" + +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) +{ + int retStatus = ISD200_GOOD; + struct isd200_info *info; + + info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL); + if (!info) + retStatus = ISD200_ERROR; + else { + 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); + retStatus = ISD200_ERROR; + } + } + + if (retStatus == ISD200_GOOD) { + us->extra = info; + us->extra_destructor = isd200_free_info_ptrs; + } + + return retStatus; +} + +/************************************************************************** + * 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 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); + 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 = "ums-isd200", + .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_driver(isd200_driver); |