1585 lines
44 KiB
C
1585 lines
44 KiB
C
/* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
|
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*
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||
* Current development and maintenance:
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* (C) 2001-2002 Björn Stenberg (bjorn@haxx.se)
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*
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* Developed with the assistance of:
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* (C) 2002 Alan Stern <stern@rowland.org>
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*
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||
* Initial work:
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* (C) 2000 In-System Design, Inc. (support@in-system.com)
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*
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* The ISD200 ASIC does not natively support ATA devices. The chip
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* does implement an interface, the ATA Command Block (ATACB) which provides
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* a means of passing ATA commands and ATA register accesses to a device.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* History:
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*
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* 2002-10-19: Removed the specialized transfer routines.
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* (Alan Stern <stern@rowland.harvard.edu>)
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* 2001-02-24: Removed lots of duplicate code and simplified the structure.
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* (bjorn@haxx.se)
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* 2002-01-16: Fixed endianness bug so it works on the ppc arch.
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* (Luc Saillard <luc@saillard.org>)
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* 2002-01-17: All bitfields removed.
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* (bjorn@haxx.se)
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*/
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/* Include files */
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#include <linux/jiffies.h>
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/ata.h>
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#include <linux/hdreg.h>
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#include <linux/scatterlist.h>
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||
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include "usb.h"
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#include "transport.h"
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#include "protocol.h"
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#include "debug.h"
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#include "scsiglue.h"
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MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
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MODULE_AUTHOR("Bj<EFBFBD>rn Stenberg <bjorn@haxx.se>");
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MODULE_LICENSE("GPL");
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static int isd200_Initialization(struct us_data *us);
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/*
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* The table of devices
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*/
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#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
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vendorName, productName, useProtocol, useTransport, \
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initFunction, flags) \
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{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
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.driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
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struct usb_device_id isd200_usb_ids[] = {
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# include "unusual_isd200.h"
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
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#undef UNUSUAL_DEV
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#undef USUAL_DEV
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/*
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* The flags table
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*/
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#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
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vendor_name, product_name, use_protocol, use_transport, \
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init_function, Flags) \
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{ \
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.vendorName = vendor_name, \
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.productName = product_name, \
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.useProtocol = use_protocol, \
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.useTransport = use_transport, \
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.initFunction = init_function, \
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}
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static struct us_unusual_dev isd200_unusual_dev_list[] = {
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# include "unusual_isd200.h"
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{ } /* Terminating entry */
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};
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#undef UNUSUAL_DEV
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#undef USUAL_DEV
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/* Timeout defines (in Seconds) */
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#define ISD200_ENUM_BSY_TIMEOUT 35
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#define ISD200_ENUM_DETECT_TIMEOUT 30
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#define ISD200_DEFAULT_TIMEOUT 30
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/* device flags */
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#define DF_ATA_DEVICE 0x0001
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#define DF_MEDIA_STATUS_ENABLED 0x0002
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#define DF_REMOVABLE_MEDIA 0x0004
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/* capability bit definitions */
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#define CAPABILITY_DMA 0x01
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#define CAPABILITY_LBA 0x02
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/* command_setX bit definitions */
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#define COMMANDSET_REMOVABLE 0x02
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#define COMMANDSET_MEDIA_STATUS 0x10
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/* ATA Vendor Specific defines */
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#define ATA_ADDRESS_DEVHEAD_STD 0xa0
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#define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
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#define ATA_ADDRESS_DEVHEAD_SLAVE 0x10
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/* Action Select bits */
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#define ACTION_SELECT_0 0x01
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#define ACTION_SELECT_1 0x02
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#define ACTION_SELECT_2 0x04
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#define ACTION_SELECT_3 0x08
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#define ACTION_SELECT_4 0x10
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#define ACTION_SELECT_5 0x20
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#define ACTION_SELECT_6 0x40
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#define ACTION_SELECT_7 0x80
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/* Register Select bits */
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#define REG_ALTERNATE_STATUS 0x01
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#define REG_DEVICE_CONTROL 0x01
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#define REG_ERROR 0x02
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#define REG_FEATURES 0x02
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#define REG_SECTOR_COUNT 0x04
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#define REG_SECTOR_NUMBER 0x08
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#define REG_CYLINDER_LOW 0x10
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#define REG_CYLINDER_HIGH 0x20
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#define REG_DEVICE_HEAD 0x40
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#define REG_STATUS 0x80
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#define REG_COMMAND 0x80
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/* ATA registers offset definitions */
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#define ATA_REG_ERROR_OFFSET 1
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#define ATA_REG_LCYL_OFFSET 4
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#define ATA_REG_HCYL_OFFSET 5
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#define ATA_REG_STATUS_OFFSET 7
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/* ATA error definitions not in <linux/hdreg.h> */
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#define ATA_ERROR_MEDIA_CHANGE 0x20
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/* ATA command definitions not in <linux/hdreg.h> */
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#define ATA_COMMAND_GET_MEDIA_STATUS 0xDA
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#define ATA_COMMAND_MEDIA_EJECT 0xED
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/* ATA drive control definitions */
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#define ATA_DC_DISABLE_INTERRUPTS 0x02
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#define ATA_DC_RESET_CONTROLLER 0x04
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#define ATA_DC_REENABLE_CONTROLLER 0x00
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/*
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* General purpose return codes
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*/
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#define ISD200_ERROR -1
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#define ISD200_GOOD 0
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/*
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* Transport return codes
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*/
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#define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */
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#define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */
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#define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
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/* driver action codes */
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#define ACTION_READ_STATUS 0
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#define ACTION_RESET 1
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#define ACTION_REENABLE 2
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#define ACTION_SOFT_RESET 3
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#define ACTION_ENUM 4
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#define ACTION_IDENTIFY 5
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/*
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* ata_cdb struct
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*/
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union ata_cdb {
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struct {
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unsigned char SignatureByte0;
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unsigned char SignatureByte1;
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unsigned char ActionSelect;
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unsigned char RegisterSelect;
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unsigned char TransferBlockSize;
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unsigned char WriteData3F6;
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unsigned char WriteData1F1;
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unsigned char WriteData1F2;
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unsigned char WriteData1F3;
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unsigned char WriteData1F4;
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unsigned char WriteData1F5;
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unsigned char WriteData1F6;
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unsigned char WriteData1F7;
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unsigned char Reserved[3];
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} generic;
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struct {
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unsigned char SignatureByte0;
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unsigned char SignatureByte1;
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unsigned char ActionSelect;
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unsigned char RegisterSelect;
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unsigned char TransferBlockSize;
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unsigned char AlternateStatusByte;
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unsigned char ErrorByte;
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unsigned char SectorCountByte;
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unsigned char SectorNumberByte;
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unsigned char CylinderLowByte;
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unsigned char CylinderHighByte;
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unsigned char DeviceHeadByte;
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unsigned char StatusByte;
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unsigned char Reserved[3];
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} read;
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struct {
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unsigned char SignatureByte0;
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unsigned char SignatureByte1;
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unsigned char ActionSelect;
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unsigned char RegisterSelect;
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||
unsigned char TransferBlockSize;
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||
unsigned char DeviceControlByte;
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||
unsigned char FeaturesByte;
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||
unsigned char SectorCountByte;
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unsigned char SectorNumberByte;
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unsigned char CylinderLowByte;
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unsigned char CylinderHighByte;
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unsigned char DeviceHeadByte;
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unsigned char CommandByte;
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unsigned char Reserved[3];
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} write;
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};
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/*
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* Inquiry data structure. This is the data returned from the target
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* after it receives an inquiry.
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*
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* This structure may be extended by the number of bytes specified
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* in the field AdditionalLength. The defined size constant only
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* includes fields through ProductRevisionLevel.
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||
*/
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/*
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* DeviceType field
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||
*/
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#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
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#define DEVICE_REMOVABLE 0x80
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struct inquiry_data {
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unsigned char DeviceType;
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unsigned char DeviceTypeModifier;
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unsigned char Versions;
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unsigned char Format;
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unsigned char AdditionalLength;
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unsigned char Reserved[2];
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unsigned char Capability;
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unsigned char VendorId[8];
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unsigned char ProductId[16];
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unsigned char ProductRevisionLevel[4];
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||
unsigned char VendorSpecific[20];
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unsigned char Reserved3[40];
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} __attribute__ ((packed));
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/*
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* INQUIRY data buffer size
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*/
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#define INQUIRYDATABUFFERSIZE 36
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/*
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* ISD200 CONFIG data struct
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*/
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#define ATACFG_TIMING 0x0f
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#define ATACFG_ATAPI_RESET 0x10
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#define ATACFG_MASTER 0x20
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#define ATACFG_BLOCKSIZE 0xa0
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#define ATACFGE_LAST_LUN 0x07
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#define ATACFGE_DESC_OVERRIDE 0x08
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#define ATACFGE_STATE_SUSPEND 0x10
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#define ATACFGE_SKIP_BOOT 0x20
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#define ATACFGE_CONF_DESC2 0x40
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#define ATACFGE_INIT_STATUS 0x80
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#define CFG_CAPABILITY_SRST 0x01
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struct isd200_config {
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unsigned char EventNotification;
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unsigned char ExternalClock;
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unsigned char ATAInitTimeout;
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unsigned char ATAConfig;
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unsigned char ATAMajorCommand;
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unsigned char ATAMinorCommand;
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unsigned char ATAExtraConfig;
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unsigned char Capability;
|
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}__attribute__ ((packed));
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||
|
||
|
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/*
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* ISD200 driver information struct
|
||
*/
|
||
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struct isd200_info {
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struct inquiry_data InquiryData;
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u16 *id;
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struct isd200_config ConfigData;
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unsigned char *RegsBuf;
|
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unsigned char ATARegs[8];
|
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unsigned char DeviceHead;
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unsigned char DeviceFlags;
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||
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/* maximum number of LUNs supported */
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||
unsigned char MaxLUNs;
|
||
unsigned char cmnd[BLK_MAX_CDB];
|
||
struct scsi_cmnd srb;
|
||
struct scatterlist sg;
|
||
};
|
||
|
||
|
||
/*
|
||
* Read Capacity Data - returned in Big Endian format
|
||
*/
|
||
|
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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 & MCR_ERR) {
|
||
buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
|
||
buf->AdditionalSenseLength = 0xb;
|
||
buf->Flags = UNIT_ATTENTION;
|
||
buf->AdditionalSenseCode = 0;
|
||
buf->AdditionalSenseCodeQualifier = 0;
|
||
} else if(error & TRK0_ERR) {
|
||
buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
|
||
buf->AdditionalSenseLength = 0xb;
|
||
buf->Flags = NOT_READY;
|
||
buf->AdditionalSenseCode = 0;
|
||
buf->AdditionalSenseCodeQualifier = 0;
|
||
} else if(error & ECC_ERR) {
|
||
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;
|
||
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));
|
||
memset(&srb_dev, 0, sizeof(srb_dev));
|
||
srb->cmnd = info->cmnd;
|
||
srb->device = &srb_dev;
|
||
++srb->serial_number;
|
||
|
||
ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
||
ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
||
ata.generic.TransferBlockSize = 1;
|
||
|
||
switch ( action ) {
|
||
case ACTION_READ_STATUS:
|
||
US_DEBUGP(" isd200_action(READ_STATUS)\n");
|
||
ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
|
||
ata.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:
|
||
US_DEBUGP(" isd200_action(ENUM,0x%02x)\n",value);
|
||
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
|
||
ACTION_SELECT_3|ACTION_SELECT_4|
|
||
ACTION_SELECT_5;
|
||
ata.generic.RegisterSelect = REG_DEVICE_HEAD;
|
||
ata.write.DeviceHeadByte = value;
|
||
isd200_set_srb(info, DMA_NONE, NULL, 0);
|
||
break;
|
||
|
||
case ACTION_RESET:
|
||
US_DEBUGP(" isd200_action(RESET)\n");
|
||
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
|
||
ACTION_SELECT_3|ACTION_SELECT_4;
|
||
ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
|
||
ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
|
||
isd200_set_srb(info, DMA_NONE, NULL, 0);
|
||
break;
|
||
|
||
case ACTION_REENABLE:
|
||
US_DEBUGP(" isd200_action(REENABLE)\n");
|
||
ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
|
||
ACTION_SELECT_3|ACTION_SELECT_4;
|
||
ata.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:
|
||
US_DEBUGP(" 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 = WIN_SRST;
|
||
isd200_set_srb(info, DMA_NONE, NULL, 0);
|
||
break;
|
||
|
||
case ACTION_IDENTIFY:
|
||
US_DEBUGP(" isd200_action(IDENTIFY)\n");
|
||
ata.generic.RegisterSelect = REG_COMMAND;
|
||
ata.write.CommandByte = WIN_IDENTIFY;
|
||
isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
|
||
ATA_ID_WORDS * 2);
|
||
break;
|
||
|
||
default:
|
||
US_DEBUGP("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 {
|
||
US_DEBUGP(" isd200_action(0x%02x) error: %d\n",action,status);
|
||
status = ISD200_ERROR;
|
||
/* need to reset device here */
|
||
}
|
||
|
||
return status;
|
||
}
|
||
|
||
/**************************************************************************
|
||
* isd200_read_regs
|
||
*
|
||
* Read ATA Registers
|
||
*
|
||
* RETURNS:
|
||
* ISD status code
|
||
*/
|
||
static int isd200_read_regs( struct us_data *us )
|
||
{
|
||
struct isd200_info *info = (struct isd200_info *)us->extra;
|
||
int retStatus = ISD200_GOOD;
|
||
int transferStatus;
|
||
|
||
US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
|
||
|
||
transferStatus = isd200_action( us, ACTION_READ_STATUS,
|
||
info->RegsBuf, sizeof(info->ATARegs) );
|
||
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
||
US_DEBUGP(" Error reading ATA registers\n");
|
||
retStatus = ISD200_ERROR;
|
||
} else {
|
||
memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
|
||
US_DEBUGP(" 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)) {
|
||
US_DEBUGP("-- 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:
|
||
US_DEBUGP("-- transport indicates protocol failure\n");
|
||
srb->result = SAM_STAT_CHECK_CONDITION;
|
||
return;
|
||
|
||
case USB_STOR_TRANSPORT_FAILED:
|
||
US_DEBUGP("-- transport indicates command failure\n");
|
||
need_auto_sense = 1;
|
||
break;
|
||
|
||
case USB_STOR_TRANSPORT_ERROR:
|
||
US_DEBUGP("-- transport indicates transport error\n");
|
||
srb->result = DID_ERROR << 16;
|
||
/* Need reset here */
|
||
return;
|
||
|
||
default:
|
||
US_DEBUGP("-- 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))) {
|
||
US_DEBUGP("-- 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)) {
|
||
US_DEBUGP("-- 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 isd200_info* info )
|
||
{
|
||
US_DEBUGP(" Event Notification: 0x%x\n",
|
||
info->ConfigData.EventNotification);
|
||
US_DEBUGP(" External Clock: 0x%x\n",
|
||
info->ConfigData.ExternalClock);
|
||
US_DEBUGP(" ATA Init Timeout: 0x%x\n",
|
||
info->ConfigData.ATAInitTimeout);
|
||
US_DEBUGP(" ATAPI Command Block Size: 0x%x\n",
|
||
(info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
|
||
US_DEBUGP(" Master/Slave Selection: 0x%x\n",
|
||
info->ConfigData.ATAConfig & ATACFG_MASTER);
|
||
US_DEBUGP(" ATAPI Reset: 0x%x\n",
|
||
info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
|
||
US_DEBUGP(" ATA Timing: 0x%x\n",
|
||
info->ConfigData.ATAConfig & ATACFG_TIMING);
|
||
US_DEBUGP(" ATA Major Command: 0x%x\n",
|
||
info->ConfigData.ATAMajorCommand);
|
||
US_DEBUGP(" ATA Minor Command: 0x%x\n",
|
||
info->ConfigData.ATAMinorCommand);
|
||
US_DEBUGP(" Init Status: 0x%x\n",
|
||
info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
|
||
US_DEBUGP(" Config Descriptor 2: 0x%x\n",
|
||
info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
|
||
US_DEBUGP(" Skip Device Boot: 0x%x\n",
|
||
info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
|
||
US_DEBUGP(" ATA 3 State Supsend: 0x%x\n",
|
||
info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
|
||
US_DEBUGP(" Descriptor Override: 0x%x\n",
|
||
info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
|
||
US_DEBUGP(" Last LUN Identifier: 0x%x\n",
|
||
info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
|
||
US_DEBUGP(" 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
|
||
US_DEBUGP("Entering isd200_write_config\n");
|
||
US_DEBUGP(" Writing the following ISD200 Config Data:\n");
|
||
isd200_log_config(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) {
|
||
US_DEBUGP(" ISD200 Config Data was written successfully\n");
|
||
} else {
|
||
US_DEBUGP(" Request to write ISD200 Config Data failed!\n");
|
||
retStatus = ISD200_ERROR;
|
||
}
|
||
|
||
US_DEBUGP("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;
|
||
|
||
US_DEBUGP("Entering isd200_read_config\n");
|
||
|
||
/* read the configuration information from ISD200. Use this to */
|
||
/* determine what the special ATA CDB bytes are. */
|
||
|
||
result = usb_stor_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) {
|
||
US_DEBUGP(" Retrieved the following ISD200 Config Data:\n");
|
||
#ifdef CONFIG_USB_STORAGE_DEBUG
|
||
isd200_log_config(info);
|
||
#endif
|
||
} else {
|
||
US_DEBUGP(" Request to get ISD200 Config Data failed!\n");
|
||
retStatus = ISD200_ERROR;
|
||
}
|
||
|
||
US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
|
||
return retStatus;
|
||
}
|
||
|
||
|
||
/**************************************************************************
|
||
* isd200_atapi_soft_reset
|
||
*
|
||
* Perform an Atapi Soft Reset on the device
|
||
*
|
||
* RETURNS:
|
||
* NT status code
|
||
*/
|
||
static int isd200_atapi_soft_reset( struct us_data *us )
|
||
{
|
||
int retStatus = ISD200_GOOD;
|
||
int transferStatus;
|
||
|
||
US_DEBUGP("Entering isd200_atapi_soft_reset\n");
|
||
|
||
transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
|
||
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
||
US_DEBUGP(" Error issuing Atapi Soft Reset\n");
|
||
retStatus = ISD200_ERROR;
|
||
}
|
||
|
||
US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
|
||
return retStatus;
|
||
}
|
||
|
||
|
||
/**************************************************************************
|
||
* isd200_srst
|
||
*
|
||
* Perform an SRST on the device
|
||
*
|
||
* RETURNS:
|
||
* ISD status code
|
||
*/
|
||
static int isd200_srst( struct us_data *us )
|
||
{
|
||
int retStatus = ISD200_GOOD;
|
||
int transferStatus;
|
||
|
||
US_DEBUGP("Entering isd200_SRST\n");
|
||
|
||
transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
|
||
|
||
/* check to see if this request failed */
|
||
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
||
US_DEBUGP(" Error issuing SRST\n");
|
||
retStatus = ISD200_ERROR;
|
||
} else {
|
||
/* delay 10ms to give the drive a chance to see it */
|
||
msleep(10);
|
||
|
||
transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
|
||
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
||
US_DEBUGP(" Error taking drive out of reset\n");
|
||
retStatus = ISD200_ERROR;
|
||
} else {
|
||
/* delay 50ms to give the drive a chance to recover after SRST */
|
||
msleep(50);
|
||
}
|
||
}
|
||
|
||
US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
|
||
return retStatus;
|
||
}
|
||
|
||
|
||
/**************************************************************************
|
||
* isd200_try_enum
|
||
*
|
||
* Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
|
||
* and tries to analyze the status registers
|
||
*
|
||
* RETURNS:
|
||
* ISD status code
|
||
*/
|
||
static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
|
||
int detect )
|
||
{
|
||
int status = ISD200_GOOD;
|
||
unsigned 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) {
|
||
#ifdef CONFIG_USB_STORAGE_DEBUG
|
||
char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
|
||
"Master" : "Slave";
|
||
#endif
|
||
|
||
status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
|
||
if ( status != ISD200_GOOD )
|
||
break;
|
||
|
||
status = isd200_action( us, ACTION_READ_STATUS,
|
||
regs, 8 );
|
||
if ( status != ISD200_GOOD )
|
||
break;
|
||
|
||
if (!detect) {
|
||
if (regs[ATA_REG_STATUS_OFFSET] & BUSY_STAT) {
|
||
US_DEBUGP(" %s status is still BSY, try again...\n",mstr);
|
||
} else {
|
||
US_DEBUGP(" %s status !BSY, continue with next operation\n",mstr);
|
||
break;
|
||
}
|
||
}
|
||
/* check for BUSY_STAT and */
|
||
/* WRERR_STAT (workaround ATA Zip drive) and */
|
||
/* ERR_STAT (workaround for Archos CD-ROM) */
|
||
else if (regs[ATA_REG_STATUS_OFFSET] &
|
||
(BUSY_STAT | WRERR_STAT | ERR_STAT )) {
|
||
US_DEBUGP(" Status indicates it is not ready, try again...\n");
|
||
}
|
||
/* check for DRDY, ATA devices set DRDY after SRST */
|
||
else if (regs[ATA_REG_STATUS_OFFSET] & READY_STAT) {
|
||
US_DEBUGP(" Identified ATA device\n");
|
||
info->DeviceFlags |= DF_ATA_DEVICE;
|
||
info->DeviceHead = master_slave;
|
||
break;
|
||
}
|
||
/* check Cylinder High/Low to
|
||
determine if it is an ATAPI device
|
||
*/
|
||
else if (regs[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) {
|
||
US_DEBUGP(" Identified ATAPI device as slave. Rechecking again as master\n");
|
||
recheckAsMaster = 1;
|
||
master_slave = ATA_ADDRESS_DEVHEAD_STD;
|
||
} else {
|
||
US_DEBUGP(" Identified ATAPI device\n");
|
||
info->DeviceHead = master_slave;
|
||
|
||
status = isd200_atapi_soft_reset(us);
|
||
break;
|
||
}
|
||
} else {
|
||
US_DEBUGP(" Not ATA, not ATAPI. Weird.\n");
|
||
break;
|
||
}
|
||
|
||
/* check for timeout on this request */
|
||
if (time_after_eq(jiffies, endTime)) {
|
||
if (!detect)
|
||
US_DEBUGP(" BSY check timeout, just continue with next operation...\n");
|
||
else
|
||
US_DEBUGP(" Device detect timeout!\n");
|
||
break;
|
||
}
|
||
}
|
||
|
||
return status;
|
||
}
|
||
|
||
/**************************************************************************
|
||
* isd200_manual_enum
|
||
*
|
||
* Determines if the drive attached is an ATA or ATAPI and if it is a
|
||
* master or slave.
|
||
*
|
||
* RETURNS:
|
||
* ISD status code
|
||
*/
|
||
static int isd200_manual_enum(struct us_data *us)
|
||
{
|
||
struct isd200_info *info = (struct isd200_info *)us->extra;
|
||
int retStatus = ISD200_GOOD;
|
||
|
||
US_DEBUGP("Entering isd200_manual_enum\n");
|
||
|
||
retStatus = isd200_read_config(us);
|
||
if (retStatus == ISD200_GOOD) {
|
||
int isslave;
|
||
/* master or slave? */
|
||
retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 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)) {
|
||
US_DEBUGP(" Setting Master/Slave selection to %d\n", isslave);
|
||
info->ConfigData.ATAConfig &= 0x3f;
|
||
info->ConfigData.ATAConfig |= (isslave<<6);
|
||
retStatus = isd200_write_config(us);
|
||
}
|
||
}
|
||
|
||
US_DEBUGP("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(u16 *id)
|
||
{
|
||
US_DEBUGP(" Identify Data Structure:\n");
|
||
US_DEBUGP(" config = 0x%x\n", id[ATA_ID_CONFIG]);
|
||
US_DEBUGP(" cyls = 0x%x\n", id[ATA_ID_CYLS]);
|
||
US_DEBUGP(" heads = 0x%x\n", id[ATA_ID_HEADS]);
|
||
US_DEBUGP(" track_bytes = 0x%x\n", id[4]);
|
||
US_DEBUGP(" sector_bytes = 0x%x\n", id[5]);
|
||
US_DEBUGP(" sectors = 0x%x\n", id[ATA_ID_SECTORS]);
|
||
US_DEBUGP(" serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]);
|
||
US_DEBUGP(" buf_type = 0x%x\n", id[20]);
|
||
US_DEBUGP(" buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]);
|
||
US_DEBUGP(" ecc_bytes = 0x%x\n", id[22]);
|
||
US_DEBUGP(" fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]);
|
||
US_DEBUGP(" model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]);
|
||
US_DEBUGP(" max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff);
|
||
US_DEBUGP(" dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]);
|
||
US_DEBUGP(" capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8);
|
||
US_DEBUGP(" tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8);
|
||
US_DEBUGP(" tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8);
|
||
US_DEBUGP(" field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]);
|
||
US_DEBUGP(" cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]);
|
||
US_DEBUGP(" cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]);
|
||
US_DEBUGP(" cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]);
|
||
US_DEBUGP(" cur_capacity = 0x%x\n", ata_id_u32(id, 57));
|
||
US_DEBUGP(" multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff);
|
||
US_DEBUGP(" lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY));
|
||
US_DEBUGP(" command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]);
|
||
US_DEBUGP(" 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;
|
||
|
||
US_DEBUGP("Entering isd200_get_inquiry_data\n");
|
||
|
||
/* set default to Master */
|
||
info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
|
||
|
||
/* attempt to manually enumerate this device */
|
||
retStatus = isd200_manual_enum(us);
|
||
if (retStatus == ISD200_GOOD) {
|
||
int transferStatus;
|
||
|
||
/* check for an ATA device */
|
||
if (info->DeviceFlags & DF_ATA_DEVICE) {
|
||
/* this must be an ATA device */
|
||
/* perform an ATA Command Identify */
|
||
transferStatus = isd200_action( us, ACTION_IDENTIFY,
|
||
id, ATA_ID_WORDS * 2);
|
||
if (transferStatus != ISD200_TRANSPORT_GOOD) {
|
||
/* Error issuing ATA Command Identify */
|
||
US_DEBUGP(" Error issuing ATA Command Identify\n");
|
||
retStatus = ISD200_ERROR;
|
||
} else {
|
||
/* ATA Command Identify successful */
|
||
int i;
|
||
__be16 *src;
|
||
__u16 *dest;
|
||
|
||
isd200_fix_driveid(id);
|
||
isd200_dump_driveid(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) {
|
||
US_DEBUGP(" Device supports Media Status Notification\n");
|
||
|
||
/* Indicate that it is enabled, even though it is not
|
||
* This allows the lock/unlock of the media to work
|
||
* correctly.
|
||
*/
|
||
info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
|
||
}
|
||
else
|
||
info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
|
||
|
||
}
|
||
} else {
|
||
/*
|
||
* this must be an ATAPI device
|
||
* use an ATAPI protocol (Transparent SCSI)
|
||
*/
|
||
us->protocol_name = "Transparent SCSI";
|
||
us->proto_handler = usb_stor_transparent_scsi_command;
|
||
|
||
US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
|
||
|
||
/* Free driver structure */
|
||
us->extra_destructor(info);
|
||
kfree(info);
|
||
us->extra = NULL;
|
||
us->extra_destructor = NULL;
|
||
}
|
||
}
|
||
|
||
US_DEBUGP("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:
|
||
US_DEBUGP(" 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:
|
||
US_DEBUGP(" 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 {
|
||
US_DEBUGP(" Media Status not supported, just report okay\n");
|
||
srb->result = SAM_STAT_GOOD;
|
||
sendToTransport = 0;
|
||
}
|
||
break;
|
||
|
||
case TEST_UNIT_READY:
|
||
US_DEBUGP(" 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 {
|
||
US_DEBUGP(" 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;
|
||
|
||
US_DEBUGP(" 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:
|
||
US_DEBUGP(" 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 = WIN_READ;
|
||
break;
|
||
|
||
case WRITE_10:
|
||
US_DEBUGP(" 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 = WIN_WRITE;
|
||
break;
|
||
|
||
case ALLOW_MEDIUM_REMOVAL:
|
||
US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
|
||
|
||
if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
|
||
US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
|
||
|
||
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
||
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
||
ataCdb->generic.TransferBlockSize = 1;
|
||
ataCdb->generic.RegisterSelect = REG_COMMAND;
|
||
ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
|
||
WIN_DOORLOCK : WIN_DOORUNLOCK;
|
||
isd200_srb_set_bufflen(srb, 0);
|
||
} else {
|
||
US_DEBUGP(" Not removeable media, just report okay\n");
|
||
srb->result = SAM_STAT_GOOD;
|
||
sendToTransport = 0;
|
||
}
|
||
break;
|
||
|
||
case START_STOP:
|
||
US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n");
|
||
US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
|
||
|
||
if ((srb->cmnd[4] & 0x3) == 0x2) {
|
||
US_DEBUGP(" Media Eject\n");
|
||
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
||
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
||
ataCdb->generic.TransferBlockSize = 0;
|
||
ataCdb->generic.RegisterSelect = REG_COMMAND;
|
||
ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
|
||
} else if ((srb->cmnd[4] & 0x3) == 0x1) {
|
||
US_DEBUGP(" Get Media Status\n");
|
||
ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
|
||
ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
|
||
ataCdb->generic.TransferBlockSize = 1;
|
||
ataCdb->generic.RegisterSelect = REG_COMMAND;
|
||
ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
|
||
isd200_srb_set_bufflen(srb, 0);
|
||
} else {
|
||
US_DEBUGP(" Nothing to do, just report okay\n");
|
||
srb->result = SAM_STAT_GOOD;
|
||
sendToTransport = 0;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
US_DEBUGP("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 = (struct isd200_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 = (unsigned char *)
|
||
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;
|
||
} else
|
||
US_DEBUGP("ERROR - kmalloc failure\n");
|
||
|
||
return retStatus;
|
||
}
|
||
|
||
/**************************************************************************
|
||
* Initialization for the ISD200
|
||
*/
|
||
|
||
static int isd200_Initialization(struct us_data *us)
|
||
{
|
||
US_DEBUGP("ISD200 Initialization...\n");
|
||
|
||
/* Initialize ISD200 info struct */
|
||
|
||
if (isd200_init_info(us) == ISD200_ERROR) {
|
||
US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
|
||
} else {
|
||
/* Get device specific data */
|
||
|
||
if (isd200_get_inquiry_data(us) != ISD200_GOOD)
|
||
US_DEBUGP("ISD200 Initialization Failure\n");
|
||
else
|
||
US_DEBUGP("ISD200 Initialization complete\n");
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/**************************************************************************
|
||
* Protocol and Transport for the ISD200 ASIC
|
||
*
|
||
* This protocol and transport are for ATA devices connected to an ISD200
|
||
* ASIC. An ATAPI device that is conected as a slave device will be
|
||
* detected in the driver initialization function and the protocol will
|
||
* be changed to an ATAPI protocol (Transparent SCSI).
|
||
*
|
||
*/
|
||
|
||
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)
|
||
US_DEBUGP("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,
|
||
};
|
||
|
||
static int __init isd200_init(void)
|
||
{
|
||
return usb_register(&isd200_driver);
|
||
}
|
||
|
||
static void __exit isd200_exit(void)
|
||
{
|
||
usb_deregister(&isd200_driver);
|
||
}
|
||
|
||
module_init(isd200_init);
|
||
module_exit(isd200_exit);
|