// SPDX-License-Identifier: GPL-2.0+
|
/*
|
* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable
|
*
|
* Current development and maintenance by:
|
* (c) 2000, 2001 Robert Baruch (autophile@starband.net)
|
* (c) 2004, 2005 Daniel Drake <dsd@gentoo.org>
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*
|
* Developed with the assistance of:
|
* (c) 2002 Alan Stern <stern@rowland.org>
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*
|
* Flash support based on earlier work by:
|
* (c) 2002 Thomas Kreiling <usbdev@sm04.de>
|
*
|
* Many originally ATAPI devices were slightly modified to meet the USB
|
* market by using some kind of translation from ATAPI to USB on the host,
|
* and the peripheral would translate from USB back to ATAPI.
|
*
|
* SCM Microsystems (www.scmmicro.com) makes a device, sold to OEM's only,
|
* which does the USB-to-ATAPI conversion. By obtaining the data sheet on
|
* their device under nondisclosure agreement, I have been able to write
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* this driver for Linux.
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*
|
* The chip used in the device can also be used for EPP and ISA translation
|
* as well. This driver is only guaranteed to work with the ATAPI
|
* translation.
|
*
|
* See the Kconfig help text for a list of devices known to be supported by
|
* this driver.
|
*/
|
|
#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/cdrom.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.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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#define DRV_NAME "ums-usbat"
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MODULE_DESCRIPTION("Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable");
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MODULE_AUTHOR("Daniel Drake <dsd@gentoo.org>, Robert Baruch <autophile@starband.net>");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(USB_STORAGE);
|
|
/* Supported device types */
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#define USBAT_DEV_HP8200 0x01
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#define USBAT_DEV_FLASH 0x02
|
|
#define USBAT_EPP_PORT 0x10
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#define USBAT_EPP_REGISTER 0x30
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#define USBAT_ATA 0x40
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#define USBAT_ISA 0x50
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|
/* Commands (need to be logically OR'd with an access type */
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#define USBAT_CMD_READ_REG 0x00
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#define USBAT_CMD_WRITE_REG 0x01
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#define USBAT_CMD_READ_BLOCK 0x02
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#define USBAT_CMD_WRITE_BLOCK 0x03
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#define USBAT_CMD_COND_READ_BLOCK 0x04
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#define USBAT_CMD_COND_WRITE_BLOCK 0x05
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#define USBAT_CMD_WRITE_REGS 0x07
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|
/* Commands (these don't need an access type) */
|
#define USBAT_CMD_EXEC_CMD 0x80
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#define USBAT_CMD_SET_FEAT 0x81
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#define USBAT_CMD_UIO 0x82
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|
/* Methods of accessing UIO register */
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#define USBAT_UIO_READ 1
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#define USBAT_UIO_WRITE 0
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/* Qualifier bits */
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#define USBAT_QUAL_FCQ 0x20 /* full compare */
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#define USBAT_QUAL_ALQ 0x10 /* auto load subcount */
|
|
/* USBAT Flash Media status types */
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#define USBAT_FLASH_MEDIA_NONE 0
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#define USBAT_FLASH_MEDIA_CF 1
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|
/* USBAT Flash Media change types */
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#define USBAT_FLASH_MEDIA_SAME 0
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#define USBAT_FLASH_MEDIA_CHANGED 1
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|
/* USBAT ATA registers */
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#define USBAT_ATA_DATA 0x10 /* read/write data (R/W) */
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#define USBAT_ATA_FEATURES 0x11 /* set features (W) */
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#define USBAT_ATA_ERROR 0x11 /* error (R) */
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#define USBAT_ATA_SECCNT 0x12 /* sector count (R/W) */
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#define USBAT_ATA_SECNUM 0x13 /* sector number (R/W) */
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#define USBAT_ATA_LBA_ME 0x14 /* cylinder low (R/W) */
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#define USBAT_ATA_LBA_HI 0x15 /* cylinder high (R/W) */
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#define USBAT_ATA_DEVICE 0x16 /* head/device selection (R/W) */
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#define USBAT_ATA_STATUS 0x17 /* device status (R) */
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#define USBAT_ATA_CMD 0x17 /* device command (W) */
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#define USBAT_ATA_ALTSTATUS 0x0E /* status (no clear IRQ) (R) */
|
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/* USBAT User I/O Data registers */
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#define USBAT_UIO_EPAD 0x80 /* Enable Peripheral Control Signals */
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#define USBAT_UIO_CDT 0x40 /* Card Detect (Read Only) */
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/* CDT = ACKD & !UI1 & !UI0 */
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#define USBAT_UIO_1 0x20 /* I/O 1 */
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#define USBAT_UIO_0 0x10 /* I/O 0 */
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#define USBAT_UIO_EPP_ATA 0x08 /* 1=EPP mode, 0=ATA mode */
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#define USBAT_UIO_UI1 0x04 /* Input 1 */
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#define USBAT_UIO_UI0 0x02 /* Input 0 */
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#define USBAT_UIO_INTR_ACK 0x01 /* Interrupt (ATA/ISA)/Acknowledge (EPP) */
|
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/* USBAT User I/O Enable registers */
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#define USBAT_UIO_DRVRST 0x80 /* Reset Peripheral */
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#define USBAT_UIO_ACKD 0x40 /* Enable Card Detect */
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#define USBAT_UIO_OE1 0x20 /* I/O 1 set=output/clr=input */
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/* If ACKD=1, set OE1 to 1 also. */
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#define USBAT_UIO_OE0 0x10 /* I/O 0 set=output/clr=input */
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#define USBAT_UIO_ADPRST 0x01 /* Reset SCM chip */
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/* USBAT Features */
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#define USBAT_FEAT_ETEN 0x80 /* External trigger enable */
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#define USBAT_FEAT_U1 0x08
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#define USBAT_FEAT_U0 0x04
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#define USBAT_FEAT_ET1 0x02
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#define USBAT_FEAT_ET2 0x01
|
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struct usbat_info {
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int devicetype;
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/* Used for Flash readers only */
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unsigned long sectors; /* total sector count */
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unsigned long ssize; /* sector size in bytes */
|
|
unsigned char sense_key;
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unsigned long sense_asc; /* additional sense code */
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unsigned long sense_ascq; /* additional sense code qualifier */
|
};
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#define short_pack(LSB,MSB) ( ((u16)(LSB)) | ( ((u16)(MSB))<<8 ) )
|
#define LSB_of(s) ((s)&0xFF)
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#define MSB_of(s) ((s)>>8)
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static int transferred = 0;
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static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us);
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static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us);
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static int init_usbat_cd(struct us_data *us);
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static int init_usbat_flash(struct us_data *us);
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|
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/*
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* The table of devices
|
*/
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#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
|
vendorName, productName, useProtocol, useTransport, \
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initFunction, flags) \
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{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
|
.driver_info = (flags) }
|
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static struct usb_device_id usbat_usb_ids[] = {
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# include "unusual_usbat.h"
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, usbat_usb_ids);
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#undef UNUSUAL_DEV
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/*
|
* The flags table
|
*/
|
#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
|
vendor_name, product_name, use_protocol, use_transport, \
|
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 usbat_unusual_dev_list[] = {
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# include "unusual_usbat.h"
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{ } /* Terminating entry */
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};
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#undef UNUSUAL_DEV
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|
/*
|
* Convenience function to produce an ATA read/write sectors command
|
* Use cmd=0x20 for read, cmd=0x30 for write
|
*/
|
static void usbat_pack_ata_sector_cmd(unsigned char *buf,
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unsigned char thistime,
|
u32 sector, unsigned char cmd)
|
{
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buf[0] = 0;
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buf[1] = thistime;
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buf[2] = sector & 0xFF;
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buf[3] = (sector >> 8) & 0xFF;
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buf[4] = (sector >> 16) & 0xFF;
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buf[5] = 0xE0 | ((sector >> 24) & 0x0F);
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buf[6] = cmd;
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}
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/*
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* Convenience function to get the device type (flash or hp8200)
|
*/
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static int usbat_get_device_type(struct us_data *us)
|
{
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return ((struct usbat_info*)us->extra)->devicetype;
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}
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/*
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* Read a register from the device
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*/
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static int usbat_read(struct us_data *us,
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unsigned char access,
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unsigned char reg,
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unsigned char *content)
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{
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return usb_stor_ctrl_transfer(us,
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us->recv_ctrl_pipe,
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access | USBAT_CMD_READ_REG,
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0xC0,
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(u16)reg,
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0,
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content,
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1);
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}
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/*
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* Write to a register on the device
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*/
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static int usbat_write(struct us_data *us,
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unsigned char access,
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unsigned char reg,
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unsigned char content)
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{
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return usb_stor_ctrl_transfer(us,
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us->send_ctrl_pipe,
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access | USBAT_CMD_WRITE_REG,
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0x40,
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short_pack(reg, content),
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0,
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NULL,
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0);
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}
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/*
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* Convenience function to perform a bulk read
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*/
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static int usbat_bulk_read(struct us_data *us,
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void* buf,
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unsigned int len,
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int use_sg)
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{
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if (len == 0)
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return USB_STOR_XFER_GOOD;
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usb_stor_dbg(us, "len = %d\n", len);
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return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, buf, len, use_sg, NULL);
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}
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/*
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* Convenience function to perform a bulk write
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*/
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static int usbat_bulk_write(struct us_data *us,
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void* buf,
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unsigned int len,
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int use_sg)
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{
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if (len == 0)
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return USB_STOR_XFER_GOOD;
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usb_stor_dbg(us, "len = %d\n", len);
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return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, buf, len, use_sg, NULL);
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}
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/*
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* Some USBAT-specific commands can only be executed over a command transport
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* This transport allows one (len=8) or two (len=16) vendor-specific commands
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* to be executed.
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*/
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static int usbat_execute_command(struct us_data *us,
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unsigned char *commands,
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unsigned int len)
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{
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return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
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USBAT_CMD_EXEC_CMD, 0x40, 0, 0,
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commands, len);
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}
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/*
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* Read the status register
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*/
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static int usbat_get_status(struct us_data *us, unsigned char *status)
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{
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int rc;
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rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status);
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usb_stor_dbg(us, "0x%02X\n", *status);
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return rc;
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}
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/*
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* Check the device status
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*/
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static int usbat_check_status(struct us_data *us)
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{
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unsigned char *reply = us->iobuf;
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int rc;
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rc = usbat_get_status(us, reply);
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if (rc != USB_STOR_XFER_GOOD)
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return USB_STOR_TRANSPORT_FAILED;
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/* error/check condition (0x51 is ok) */
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if (*reply & 0x01 && *reply != 0x51)
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return USB_STOR_TRANSPORT_FAILED;
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/* device fault */
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if (*reply & 0x20)
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return USB_STOR_TRANSPORT_FAILED;
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return USB_STOR_TRANSPORT_GOOD;
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}
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/*
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* Stores critical information in internal registers in preparation for the execution
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* of a conditional usbat_read_blocks or usbat_write_blocks call.
|
*/
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static int usbat_set_shuttle_features(struct us_data *us,
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unsigned char external_trigger,
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unsigned char epp_control,
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unsigned char mask_byte,
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unsigned char test_pattern,
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unsigned char subcountH,
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unsigned char subcountL)
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{
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unsigned char *command = us->iobuf;
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command[0] = 0x40;
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command[1] = USBAT_CMD_SET_FEAT;
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/*
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* The only bit relevant to ATA access is bit 6
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* which defines 8 bit data access (set) or 16 bit (unset)
|
*/
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command[2] = epp_control;
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/*
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* If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1,
|
* ET1 and ET2 define an external event to be checked for on event of a
|
* _read_blocks or _write_blocks operation. The read/write will not take
|
* place unless the defined trigger signal is active.
|
*/
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command[3] = external_trigger;
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/*
|
* The resultant byte of the mask operation (see mask_byte) is compared for
|
* equivalence with this test pattern. If equal, the read/write will take
|
* place.
|
*/
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command[4] = test_pattern;
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/*
|
* This value is logically ANDed with the status register field specified
|
* in the read/write command.
|
*/
|
command[5] = mask_byte;
|
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/*
|
* If ALQ is set in the qualifier, this field contains the address of the
|
* registers where the byte count should be read for transferring the data.
|
* If ALQ is not set, then this field contains the number of bytes to be
|
* transferred.
|
*/
|
command[6] = subcountL;
|
command[7] = subcountH;
|
|
return usbat_execute_command(us, command, 8);
|
}
|
|
/*
|
* Block, waiting for an ATA device to become not busy or to report
|
* an error condition.
|
*/
|
static int usbat_wait_not_busy(struct us_data *us, int minutes)
|
{
|
int i;
|
int result;
|
unsigned char *status = us->iobuf;
|
|
/*
|
* Synchronizing cache on a CDR could take a heck of a long time,
|
* but probably not more than 10 minutes or so. On the other hand,
|
* doing a full blank on a CDRW at speed 1 will take about 75
|
* minutes!
|
*/
|
|
for (i=0; i<1200+minutes*60; i++) {
|
|
result = usbat_get_status(us, status);
|
|
if (result!=USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
if (*status & 0x01) { /* check condition */
|
result = usbat_read(us, USBAT_ATA, 0x10, status);
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
if (*status & 0x20) /* device fault */
|
return USB_STOR_TRANSPORT_FAILED;
|
|
if ((*status & 0x80)==0x00) { /* not busy */
|
usb_stor_dbg(us, "Waited not busy for %d steps\n", i);
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (i<500)
|
msleep(10); /* 5 seconds */
|
else if (i<700)
|
msleep(50); /* 10 seconds */
|
else if (i<1200)
|
msleep(100); /* 50 seconds */
|
else
|
msleep(1000); /* X minutes */
|
}
|
|
usb_stor_dbg(us, "Waited not busy for %d minutes, timing out\n",
|
minutes);
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
/*
|
* Read block data from the data register
|
*/
|
static int usbat_read_block(struct us_data *us,
|
void* buf,
|
unsigned short len,
|
int use_sg)
|
{
|
int result;
|
unsigned char *command = us->iobuf;
|
|
if (!len)
|
return USB_STOR_TRANSPORT_GOOD;
|
|
command[0] = 0xC0;
|
command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK;
|
command[2] = USBAT_ATA_DATA;
|
command[3] = 0;
|
command[4] = 0;
|
command[5] = 0;
|
command[6] = LSB_of(len);
|
command[7] = MSB_of(len);
|
|
result = usbat_execute_command(us, command, 8);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
result = usbat_bulk_read(us, buf, len, use_sg);
|
return (result == USB_STOR_XFER_GOOD ?
|
USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
|
}
|
|
/*
|
* Write block data via the data register
|
*/
|
static int usbat_write_block(struct us_data *us,
|
unsigned char access,
|
void* buf,
|
unsigned short len,
|
int minutes,
|
int use_sg)
|
{
|
int result;
|
unsigned char *command = us->iobuf;
|
|
if (!len)
|
return USB_STOR_TRANSPORT_GOOD;
|
|
command[0] = 0x40;
|
command[1] = access | USBAT_CMD_WRITE_BLOCK;
|
command[2] = USBAT_ATA_DATA;
|
command[3] = 0;
|
command[4] = 0;
|
command[5] = 0;
|
command[6] = LSB_of(len);
|
command[7] = MSB_of(len);
|
|
result = usbat_execute_command(us, command, 8);
|
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
result = usbat_bulk_write(us, buf, len, use_sg);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
return usbat_wait_not_busy(us, minutes);
|
}
|
|
/*
|
* Process read and write requests
|
*/
|
static int usbat_hp8200e_rw_block_test(struct us_data *us,
|
unsigned char access,
|
unsigned char *registers,
|
unsigned char *data_out,
|
unsigned short num_registers,
|
unsigned char data_reg,
|
unsigned char status_reg,
|
unsigned char timeout,
|
unsigned char qualifier,
|
int direction,
|
void *buf,
|
unsigned short len,
|
int use_sg,
|
int minutes)
|
{
|
int result;
|
unsigned int pipe = (direction == DMA_FROM_DEVICE) ?
|
us->recv_bulk_pipe : us->send_bulk_pipe;
|
|
unsigned char *command = us->iobuf;
|
int i, j;
|
int cmdlen;
|
unsigned char *data = us->iobuf;
|
unsigned char *status = us->iobuf;
|
|
BUG_ON(num_registers > US_IOBUF_SIZE/2);
|
|
for (i=0; i<20; i++) {
|
|
/*
|
* The first time we send the full command, which consists
|
* of downloading the SCSI command followed by downloading
|
* the data via a write-and-test. Any other time we only
|
* send the command to download the data -- the SCSI command
|
* is still 'active' in some sense in the device.
|
*
|
* We're only going to try sending the data 10 times. After
|
* that, we just return a failure.
|
*/
|
|
if (i==0) {
|
cmdlen = 16;
|
/*
|
* Write to multiple registers
|
* Not really sure the 0x07, 0x17, 0xfc, 0xe7 is
|
* necessary here, but that's what came out of the
|
* trace every single time.
|
*/
|
command[0] = 0x40;
|
command[1] = access | USBAT_CMD_WRITE_REGS;
|
command[2] = 0x07;
|
command[3] = 0x17;
|
command[4] = 0xFC;
|
command[5] = 0xE7;
|
command[6] = LSB_of(num_registers*2);
|
command[7] = MSB_of(num_registers*2);
|
} else
|
cmdlen = 8;
|
|
/* Conditionally read or write blocks */
|
command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0);
|
command[cmdlen-7] = access |
|
(direction==DMA_TO_DEVICE ?
|
USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK);
|
command[cmdlen-6] = data_reg;
|
command[cmdlen-5] = status_reg;
|
command[cmdlen-4] = timeout;
|
command[cmdlen-3] = qualifier;
|
command[cmdlen-2] = LSB_of(len);
|
command[cmdlen-1] = MSB_of(len);
|
|
result = usbat_execute_command(us, command, cmdlen);
|
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (i==0) {
|
|
for (j=0; j<num_registers; j++) {
|
data[j<<1] = registers[j];
|
data[1+(j<<1)] = data_out[j];
|
}
|
|
result = usbat_bulk_write(us, data, num_registers*2, 0);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
}
|
|
result = usb_stor_bulk_transfer_sg(us,
|
pipe, buf, len, use_sg, NULL);
|
|
/*
|
* If we get a stall on the bulk download, we'll retry
|
* the bulk download -- but not the SCSI command because
|
* in some sense the SCSI command is still 'active' and
|
* waiting for the data. Don't ask me why this should be;
|
* I'm only following what the Windoze driver did.
|
*
|
* Note that a stall for the test-and-read/write command means
|
* that the test failed. In this case we're testing to make
|
* sure that the device is error-free
|
* (i.e. bit 0 -- CHK -- of status is 0). The most likely
|
* hypothesis is that the USBAT chip somehow knows what
|
* the device will accept, but doesn't give the device any
|
* data until all data is received. Thus, the device would
|
* still be waiting for the first byte of data if a stall
|
* occurs, even if the stall implies that some data was
|
* transferred.
|
*/
|
|
if (result == USB_STOR_XFER_SHORT ||
|
result == USB_STOR_XFER_STALLED) {
|
|
/*
|
* If we're reading and we stalled, then clear
|
* the bulk output pipe only the first time.
|
*/
|
|
if (direction==DMA_FROM_DEVICE && i==0) {
|
if (usb_stor_clear_halt(us,
|
us->send_bulk_pipe) < 0)
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
/*
|
* Read status: is the device angry, or just busy?
|
*/
|
|
result = usbat_read(us, USBAT_ATA,
|
direction==DMA_TO_DEVICE ?
|
USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS,
|
status);
|
|
if (result!=USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
if (*status & 0x01) /* check condition */
|
return USB_STOR_TRANSPORT_FAILED;
|
if (*status & 0x20) /* device fault */
|
return USB_STOR_TRANSPORT_FAILED;
|
|
usb_stor_dbg(us, "Redoing %s\n",
|
direction == DMA_TO_DEVICE
|
? "write" : "read");
|
|
} else if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
else
|
return usbat_wait_not_busy(us, minutes);
|
|
}
|
|
usb_stor_dbg(us, "Bummer! %s bulk data 20 times failed\n",
|
direction == DMA_TO_DEVICE ? "Writing" : "Reading");
|
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
/*
|
* Write to multiple registers:
|
* Allows us to write specific data to any registers. The data to be written
|
* gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN
|
* which gets sent through bulk out.
|
* Not designed for large transfers of data!
|
*/
|
static int usbat_multiple_write(struct us_data *us,
|
unsigned char *registers,
|
unsigned char *data_out,
|
unsigned short num_registers)
|
{
|
int i, result;
|
unsigned char *data = us->iobuf;
|
unsigned char *command = us->iobuf;
|
|
BUG_ON(num_registers > US_IOBUF_SIZE/2);
|
|
/* Write to multiple registers, ATA access */
|
command[0] = 0x40;
|
command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS;
|
|
/* No relevance */
|
command[2] = 0;
|
command[3] = 0;
|
command[4] = 0;
|
command[5] = 0;
|
|
/* Number of bytes to be transferred (incl. addresses and data) */
|
command[6] = LSB_of(num_registers*2);
|
command[7] = MSB_of(num_registers*2);
|
|
/* The setup command */
|
result = usbat_execute_command(us, command, 8);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
/* Create the reg/data, reg/data sequence */
|
for (i=0; i<num_registers; i++) {
|
data[i<<1] = registers[i];
|
data[1+(i<<1)] = data_out[i];
|
}
|
|
/* Send the data */
|
result = usbat_bulk_write(us, data, num_registers*2, 0);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_get_device_type(us) == USBAT_DEV_HP8200)
|
return usbat_wait_not_busy(us, 0);
|
else
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Conditionally read blocks from device:
|
* Allows us to read blocks from a specific data register, based upon the
|
* condition that a status register can be successfully masked with a status
|
* qualifier. If this condition is not initially met, the read will wait
|
* up until a maximum amount of time has elapsed, as specified by timeout.
|
* The read will start when the condition is met, otherwise the command aborts.
|
*
|
* The qualifier defined here is not the value that is masked, it defines
|
* conditions for the write to take place. The actual masked qualifier (and
|
* other related details) are defined beforehand with _set_shuttle_features().
|
*/
|
static int usbat_read_blocks(struct us_data *us,
|
void* buffer,
|
int len,
|
int use_sg)
|
{
|
int result;
|
unsigned char *command = us->iobuf;
|
|
command[0] = 0xC0;
|
command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK;
|
command[2] = USBAT_ATA_DATA;
|
command[3] = USBAT_ATA_STATUS;
|
command[4] = 0xFD; /* Timeout (ms); */
|
command[5] = USBAT_QUAL_FCQ;
|
command[6] = LSB_of(len);
|
command[7] = MSB_of(len);
|
|
/* Multiple block read setup command */
|
result = usbat_execute_command(us, command, 8);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_FAILED;
|
|
/* Read the blocks we just asked for */
|
result = usbat_bulk_read(us, buffer, len, use_sg);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_FAILED;
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Conditionally write blocks to device:
|
* Allows us to write blocks to a specific data register, based upon the
|
* condition that a status register can be successfully masked with a status
|
* qualifier. If this condition is not initially met, the write will wait
|
* up until a maximum amount of time has elapsed, as specified by timeout.
|
* The read will start when the condition is met, otherwise the command aborts.
|
*
|
* The qualifier defined here is not the value that is masked, it defines
|
* conditions for the write to take place. The actual masked qualifier (and
|
* other related details) are defined beforehand with _set_shuttle_features().
|
*/
|
static int usbat_write_blocks(struct us_data *us,
|
void* buffer,
|
int len,
|
int use_sg)
|
{
|
int result;
|
unsigned char *command = us->iobuf;
|
|
command[0] = 0x40;
|
command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK;
|
command[2] = USBAT_ATA_DATA;
|
command[3] = USBAT_ATA_STATUS;
|
command[4] = 0xFD; /* Timeout (ms) */
|
command[5] = USBAT_QUAL_FCQ;
|
command[6] = LSB_of(len);
|
command[7] = MSB_of(len);
|
|
/* Multiple block write setup command */
|
result = usbat_execute_command(us, command, 8);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_FAILED;
|
|
/* Write the data */
|
result = usbat_bulk_write(us, buffer, len, use_sg);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_FAILED;
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Read the User IO register
|
*/
|
static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags)
|
{
|
int result;
|
|
result = usb_stor_ctrl_transfer(us,
|
us->recv_ctrl_pipe,
|
USBAT_CMD_UIO,
|
0xC0,
|
0,
|
0,
|
data_flags,
|
USBAT_UIO_READ);
|
|
usb_stor_dbg(us, "UIO register reads %02X\n", *data_flags);
|
|
return result;
|
}
|
|
/*
|
* Write to the User IO register
|
*/
|
static int usbat_write_user_io(struct us_data *us,
|
unsigned char enable_flags,
|
unsigned char data_flags)
|
{
|
return usb_stor_ctrl_transfer(us,
|
us->send_ctrl_pipe,
|
USBAT_CMD_UIO,
|
0x40,
|
short_pack(enable_flags, data_flags),
|
0,
|
NULL,
|
USBAT_UIO_WRITE);
|
}
|
|
/*
|
* Reset the device
|
* Often needed on media change.
|
*/
|
static int usbat_device_reset(struct us_data *us)
|
{
|
int rc;
|
|
/*
|
* Reset peripheral, enable peripheral control signals
|
* (bring reset signal up)
|
*/
|
rc = usbat_write_user_io(us,
|
USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0,
|
USBAT_UIO_EPAD | USBAT_UIO_1);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
/*
|
* Enable peripheral control signals
|
* (bring reset signal down)
|
*/
|
rc = usbat_write_user_io(us,
|
USBAT_UIO_OE1 | USBAT_UIO_OE0,
|
USBAT_UIO_EPAD | USBAT_UIO_1);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Enable card detect
|
*/
|
static int usbat_device_enable_cdt(struct us_data *us)
|
{
|
int rc;
|
|
/* Enable peripheral control signals and card detect */
|
rc = usbat_write_user_io(us,
|
USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0,
|
USBAT_UIO_EPAD | USBAT_UIO_1);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Determine if media is present.
|
*/
|
static int usbat_flash_check_media_present(struct us_data *us,
|
unsigned char *uio)
|
{
|
if (*uio & USBAT_UIO_UI0) {
|
usb_stor_dbg(us, "no media detected\n");
|
return USBAT_FLASH_MEDIA_NONE;
|
}
|
|
return USBAT_FLASH_MEDIA_CF;
|
}
|
|
/*
|
* Determine if media has changed since last operation
|
*/
|
static int usbat_flash_check_media_changed(struct us_data *us,
|
unsigned char *uio)
|
{
|
if (*uio & USBAT_UIO_0) {
|
usb_stor_dbg(us, "media change detected\n");
|
return USBAT_FLASH_MEDIA_CHANGED;
|
}
|
|
return USBAT_FLASH_MEDIA_SAME;
|
}
|
|
/*
|
* Check for media change / no media and handle the situation appropriately
|
*/
|
static int usbat_flash_check_media(struct us_data *us,
|
struct usbat_info *info)
|
{
|
int rc;
|
unsigned char *uio = us->iobuf;
|
|
rc = usbat_read_user_io(us, uio);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
/* Check for media existence */
|
rc = usbat_flash_check_media_present(us, uio);
|
if (rc == USBAT_FLASH_MEDIA_NONE) {
|
info->sense_key = 0x02;
|
info->sense_asc = 0x3A;
|
info->sense_ascq = 0x00;
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
/* Check for media change */
|
rc = usbat_flash_check_media_changed(us, uio);
|
if (rc == USBAT_FLASH_MEDIA_CHANGED) {
|
|
/* Reset and re-enable card detect */
|
rc = usbat_device_reset(us);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
rc = usbat_device_enable_cdt(us);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
msleep(50);
|
|
rc = usbat_read_user_io(us, uio);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
info->sense_key = UNIT_ATTENTION;
|
info->sense_asc = 0x28;
|
info->sense_ascq = 0x00;
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Determine whether we are controlling a flash-based reader/writer,
|
* or a HP8200-based CD drive.
|
* Sets transport functions as appropriate.
|
*/
|
static int usbat_identify_device(struct us_data *us,
|
struct usbat_info *info)
|
{
|
int rc;
|
unsigned char status;
|
|
if (!us || !info)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
rc = usbat_device_reset(us);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
msleep(500);
|
|
/*
|
* In attempt to distinguish between HP CDRW's and Flash readers, we now
|
* execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash
|
* readers), this command should fail with error. On ATAPI devices (i.e.
|
* CDROM drives), it should succeed.
|
*/
|
rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
rc = usbat_get_status(us, &status);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
/* Check for error bit, or if the command 'fell through' */
|
if (status == 0xA1 || !(status & 0x01)) {
|
/* Device is HP 8200 */
|
usb_stor_dbg(us, "Detected HP8200 CDRW\n");
|
info->devicetype = USBAT_DEV_HP8200;
|
} else {
|
/* Device is a CompactFlash reader/writer */
|
usb_stor_dbg(us, "Detected Flash reader/writer\n");
|
info->devicetype = USBAT_DEV_FLASH;
|
}
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Set the transport function based on the device type
|
*/
|
static int usbat_set_transport(struct us_data *us,
|
struct usbat_info *info,
|
int devicetype)
|
{
|
|
if (!info->devicetype)
|
info->devicetype = devicetype;
|
|
if (!info->devicetype)
|
usbat_identify_device(us, info);
|
|
switch (info->devicetype) {
|
default:
|
return USB_STOR_TRANSPORT_ERROR;
|
|
case USBAT_DEV_HP8200:
|
us->transport = usbat_hp8200e_transport;
|
break;
|
|
case USBAT_DEV_FLASH:
|
us->transport = usbat_flash_transport;
|
break;
|
}
|
|
return 0;
|
}
|
|
/*
|
* Read the media capacity
|
*/
|
static int usbat_flash_get_sector_count(struct us_data *us,
|
struct usbat_info *info)
|
{
|
unsigned char registers[3] = {
|
USBAT_ATA_SECCNT,
|
USBAT_ATA_DEVICE,
|
USBAT_ATA_CMD,
|
};
|
unsigned char command[3] = { 0x01, 0xA0, 0xEC };
|
unsigned char *reply;
|
unsigned char status;
|
int rc;
|
|
if (!us || !info)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
reply = kmalloc(512, GFP_NOIO);
|
if (!reply)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
/* ATA command : IDENTIFY DEVICE */
|
rc = usbat_multiple_write(us, registers, command, 3);
|
if (rc != USB_STOR_XFER_GOOD) {
|
usb_stor_dbg(us, "Gah! identify_device failed\n");
|
rc = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
/* Read device status */
|
if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) {
|
rc = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
msleep(100);
|
|
/* Read the device identification data */
|
rc = usbat_read_block(us, reply, 512, 0);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
goto leave;
|
|
info->sectors = ((u32)(reply[117]) << 24) |
|
((u32)(reply[116]) << 16) |
|
((u32)(reply[115]) << 8) |
|
((u32)(reply[114]) );
|
|
rc = USB_STOR_TRANSPORT_GOOD;
|
|
leave:
|
kfree(reply);
|
return rc;
|
}
|
|
/*
|
* Read data from device
|
*/
|
static int usbat_flash_read_data(struct us_data *us,
|
struct usbat_info *info,
|
u32 sector,
|
u32 sectors)
|
{
|
unsigned char registers[7] = {
|
USBAT_ATA_FEATURES,
|
USBAT_ATA_SECCNT,
|
USBAT_ATA_SECNUM,
|
USBAT_ATA_LBA_ME,
|
USBAT_ATA_LBA_HI,
|
USBAT_ATA_DEVICE,
|
USBAT_ATA_STATUS,
|
};
|
unsigned char command[7];
|
unsigned char *buffer;
|
unsigned char thistime;
|
unsigned int totallen, alloclen;
|
int len, result;
|
unsigned int sg_offset = 0;
|
struct scatterlist *sg = NULL;
|
|
result = usbat_flash_check_media(us, info);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
return result;
|
|
/*
|
* we're working in LBA mode. according to the ATA spec,
|
* we can support up to 28-bit addressing. I don't know if Jumpshot
|
* supports beyond 24-bit addressing. It's kind of hard to test
|
* since it requires > 8GB CF card.
|
*/
|
|
if (sector > 0x0FFFFFFF)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
totallen = sectors * info->ssize;
|
|
/*
|
* Since we don't read more than 64 KB at a time, we have to create
|
* a bounce buffer and move the data a piece at a time between the
|
* bounce buffer and the actual transfer buffer.
|
*/
|
|
alloclen = min(totallen, 65536u);
|
buffer = kmalloc(alloclen, GFP_NOIO);
|
if (buffer == NULL)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
do {
|
/*
|
* loop, never allocate or transfer more than 64k at once
|
* (min(128k, 255*info->ssize) is the real limit)
|
*/
|
len = min(totallen, alloclen);
|
thistime = (len / info->ssize) & 0xff;
|
|
/* ATA command 0x20 (READ SECTORS) */
|
usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20);
|
|
/* Write/execute ATA read command */
|
result = usbat_multiple_write(us, registers, command, 7);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
goto leave;
|
|
/* Read the data we just requested */
|
result = usbat_read_blocks(us, buffer, len, 0);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
goto leave;
|
|
usb_stor_dbg(us, "%d bytes\n", len);
|
|
/* Store the data in the transfer buffer */
|
usb_stor_access_xfer_buf(buffer, len, us->srb,
|
&sg, &sg_offset, TO_XFER_BUF);
|
|
sector += thistime;
|
totallen -= len;
|
} while (totallen > 0);
|
|
kfree(buffer);
|
return USB_STOR_TRANSPORT_GOOD;
|
|
leave:
|
kfree(buffer);
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
/*
|
* Write data to device
|
*/
|
static int usbat_flash_write_data(struct us_data *us,
|
struct usbat_info *info,
|
u32 sector,
|
u32 sectors)
|
{
|
unsigned char registers[7] = {
|
USBAT_ATA_FEATURES,
|
USBAT_ATA_SECCNT,
|
USBAT_ATA_SECNUM,
|
USBAT_ATA_LBA_ME,
|
USBAT_ATA_LBA_HI,
|
USBAT_ATA_DEVICE,
|
USBAT_ATA_STATUS,
|
};
|
unsigned char command[7];
|
unsigned char *buffer;
|
unsigned char thistime;
|
unsigned int totallen, alloclen;
|
int len, result;
|
unsigned int sg_offset = 0;
|
struct scatterlist *sg = NULL;
|
|
result = usbat_flash_check_media(us, info);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
return result;
|
|
/*
|
* we're working in LBA mode. according to the ATA spec,
|
* we can support up to 28-bit addressing. I don't know if the device
|
* supports beyond 24-bit addressing. It's kind of hard to test
|
* since it requires > 8GB media.
|
*/
|
|
if (sector > 0x0FFFFFFF)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
totallen = sectors * info->ssize;
|
|
/*
|
* Since we don't write more than 64 KB at a time, we have to create
|
* a bounce buffer and move the data a piece at a time between the
|
* bounce buffer and the actual transfer buffer.
|
*/
|
|
alloclen = min(totallen, 65536u);
|
buffer = kmalloc(alloclen, GFP_NOIO);
|
if (buffer == NULL)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
do {
|
/*
|
* loop, never allocate or transfer more than 64k at once
|
* (min(128k, 255*info->ssize) is the real limit)
|
*/
|
len = min(totallen, alloclen);
|
thistime = (len / info->ssize) & 0xff;
|
|
/* Get the data from the transfer buffer */
|
usb_stor_access_xfer_buf(buffer, len, us->srb,
|
&sg, &sg_offset, FROM_XFER_BUF);
|
|
/* ATA command 0x30 (WRITE SECTORS) */
|
usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30);
|
|
/* Write/execute ATA write command */
|
result = usbat_multiple_write(us, registers, command, 7);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
goto leave;
|
|
/* Write the data */
|
result = usbat_write_blocks(us, buffer, len, 0);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
goto leave;
|
|
sector += thistime;
|
totallen -= len;
|
} while (totallen > 0);
|
|
kfree(buffer);
|
return result;
|
|
leave:
|
kfree(buffer);
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
/*
|
* Squeeze a potentially huge (> 65535 byte) read10 command into
|
* a little ( <= 65535 byte) ATAPI pipe
|
*/
|
static int usbat_hp8200e_handle_read10(struct us_data *us,
|
unsigned char *registers,
|
unsigned char *data,
|
struct scsi_cmnd *srb)
|
{
|
int result = USB_STOR_TRANSPORT_GOOD;
|
unsigned char *buffer;
|
unsigned int len;
|
unsigned int sector;
|
unsigned int sg_offset = 0;
|
struct scatterlist *sg = NULL;
|
|
usb_stor_dbg(us, "transfersize %d\n", srb->transfersize);
|
|
if (scsi_bufflen(srb) < 0x10000) {
|
|
result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
|
registers, data, 19,
|
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
|
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
|
DMA_FROM_DEVICE,
|
scsi_sglist(srb),
|
scsi_bufflen(srb), scsi_sg_count(srb), 1);
|
|
return result;
|
}
|
|
/*
|
* Since we're requesting more data than we can handle in
|
* a single read command (max is 64k-1), we will perform
|
* multiple reads, but each read must be in multiples of
|
* a sector. Luckily the sector size is in srb->transfersize
|
* (see linux/drivers/scsi/sr.c).
|
*/
|
|
if (data[7+0] == GPCMD_READ_CD) {
|
len = short_pack(data[7+9], data[7+8]);
|
len <<= 16;
|
len |= data[7+7];
|
usb_stor_dbg(us, "GPCMD_READ_CD: len %d\n", len);
|
srb->transfersize = scsi_bufflen(srb)/len;
|
}
|
|
if (!srb->transfersize) {
|
srb->transfersize = 2048; /* A guess */
|
usb_stor_dbg(us, "transfersize 0, forcing %d\n",
|
srb->transfersize);
|
}
|
|
/*
|
* Since we only read in one block at a time, we have to create
|
* a bounce buffer and move the data a piece at a time between the
|
* bounce buffer and the actual transfer buffer.
|
*/
|
|
len = (65535/srb->transfersize) * srb->transfersize;
|
usb_stor_dbg(us, "Max read is %d bytes\n", len);
|
len = min(len, scsi_bufflen(srb));
|
buffer = kmalloc(len, GFP_NOIO);
|
if (buffer == NULL) /* bloody hell! */
|
return USB_STOR_TRANSPORT_FAILED;
|
sector = short_pack(data[7+3], data[7+2]);
|
sector <<= 16;
|
sector |= short_pack(data[7+5], data[7+4]);
|
transferred = 0;
|
|
while (transferred != scsi_bufflen(srb)) {
|
|
if (len > scsi_bufflen(srb) - transferred)
|
len = scsi_bufflen(srb) - transferred;
|
|
data[3] = len&0xFF; /* (cylL) = expected length (L) */
|
data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
|
|
/* Fix up the SCSI command sector and num sectors */
|
|
data[7+2] = MSB_of(sector>>16); /* SCSI command sector */
|
data[7+3] = LSB_of(sector>>16);
|
data[7+4] = MSB_of(sector&0xFFFF);
|
data[7+5] = LSB_of(sector&0xFFFF);
|
if (data[7+0] == GPCMD_READ_CD)
|
data[7+6] = 0;
|
data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */
|
data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */
|
|
result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
|
registers, data, 19,
|
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
|
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
|
DMA_FROM_DEVICE,
|
buffer,
|
len, 0, 1);
|
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
break;
|
|
/* Store the data in the transfer buffer */
|
usb_stor_access_xfer_buf(buffer, len, srb,
|
&sg, &sg_offset, TO_XFER_BUF);
|
|
/* Update the amount transferred and the sector number */
|
|
transferred += len;
|
sector += len / srb->transfersize;
|
|
} /* while transferred != scsi_bufflen(srb) */
|
|
kfree(buffer);
|
return result;
|
}
|
|
static int usbat_select_and_test_registers(struct us_data *us)
|
{
|
int selector;
|
unsigned char *status = us->iobuf;
|
|
/* try device = master, then device = slave. */
|
for (selector = 0xA0; selector <= 0xB0; selector += 0x10) {
|
if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
|
USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Initialize the USBAT processor and the storage device
|
*/
|
static int init_usbat(struct us_data *us, int devicetype)
|
{
|
int rc;
|
struct usbat_info *info;
|
unsigned char subcountH = USBAT_ATA_LBA_HI;
|
unsigned char subcountL = USBAT_ATA_LBA_ME;
|
unsigned char *status = us->iobuf;
|
|
us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO);
|
if (!us->extra)
|
return 1;
|
|
info = (struct usbat_info *) (us->extra);
|
|
/* Enable peripheral control signals */
|
rc = usbat_write_user_io(us,
|
USBAT_UIO_OE1 | USBAT_UIO_OE0,
|
USBAT_UIO_EPAD | USBAT_UIO_1);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "INIT 1\n");
|
|
msleep(2000);
|
|
rc = usbat_read_user_io(us, status);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
usb_stor_dbg(us, "INIT 2\n");
|
|
rc = usbat_read_user_io(us, status);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
rc = usbat_read_user_io(us, status);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "INIT 3\n");
|
|
rc = usbat_select_and_test_registers(us);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
usb_stor_dbg(us, "INIT 4\n");
|
|
rc = usbat_read_user_io(us, status);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "INIT 5\n");
|
|
/* Enable peripheral control signals and card detect */
|
rc = usbat_device_enable_cdt(us);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
usb_stor_dbg(us, "INIT 6\n");
|
|
rc = usbat_read_user_io(us, status);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "INIT 7\n");
|
|
msleep(1400);
|
|
rc = usbat_read_user_io(us, status);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "INIT 8\n");
|
|
rc = usbat_select_and_test_registers(us);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
usb_stor_dbg(us, "INIT 9\n");
|
|
/* At this point, we need to detect which device we are using */
|
if (usbat_set_transport(us, info, devicetype))
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "INIT 10\n");
|
|
if (usbat_get_device_type(us) == USBAT_DEV_FLASH) {
|
subcountH = 0x02;
|
subcountL = 0x00;
|
}
|
rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1),
|
0x00, 0x88, 0x08, subcountH, subcountL);
|
if (rc != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "INIT 11\n");
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
/*
|
* Transport for the HP 8200e
|
*/
|
static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
|
{
|
int result;
|
unsigned char *status = us->iobuf;
|
unsigned char registers[32];
|
unsigned char data[32];
|
unsigned int len;
|
int i;
|
|
len = scsi_bufflen(srb);
|
|
/*
|
* Send A0 (ATA PACKET COMMAND).
|
* Note: I guess we're never going to get any of the ATA
|
* commands... just ATA Packet Commands.
|
*/
|
|
registers[0] = USBAT_ATA_FEATURES;
|
registers[1] = USBAT_ATA_SECCNT;
|
registers[2] = USBAT_ATA_SECNUM;
|
registers[3] = USBAT_ATA_LBA_ME;
|
registers[4] = USBAT_ATA_LBA_HI;
|
registers[5] = USBAT_ATA_DEVICE;
|
registers[6] = USBAT_ATA_CMD;
|
data[0] = 0x00;
|
data[1] = 0x00;
|
data[2] = 0x00;
|
data[3] = len&0xFF; /* (cylL) = expected length (L) */
|
data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
|
data[5] = 0xB0; /* (device sel) = slave */
|
data[6] = 0xA0; /* (command) = ATA PACKET COMMAND */
|
|
for (i=7; i<19; i++) {
|
registers[i] = 0x10;
|
data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7];
|
}
|
|
result = usbat_get_status(us, status);
|
usb_stor_dbg(us, "Status = %02X\n", *status);
|
if (result != USB_STOR_XFER_GOOD)
|
return USB_STOR_TRANSPORT_ERROR;
|
if (srb->cmnd[0] == TEST_UNIT_READY)
|
transferred = 0;
|
|
if (srb->sc_data_direction == DMA_TO_DEVICE) {
|
|
result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
|
registers, data, 19,
|
USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
|
(USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
|
DMA_TO_DEVICE,
|
scsi_sglist(srb),
|
len, scsi_sg_count(srb), 10);
|
|
if (result == USB_STOR_TRANSPORT_GOOD) {
|
transferred += len;
|
usb_stor_dbg(us, "Wrote %08X bytes\n", transferred);
|
}
|
|
return result;
|
|
} else if (srb->cmnd[0] == READ_10 ||
|
srb->cmnd[0] == GPCMD_READ_CD) {
|
|
return usbat_hp8200e_handle_read10(us, registers, data, srb);
|
|
}
|
|
if (len > 0xFFFF) {
|
usb_stor_dbg(us, "Error: len = %08X... what do I do now?\n",
|
len);
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
result = usbat_multiple_write(us, registers, data, 7);
|
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
return result;
|
|
/*
|
* Write the 12-byte command header.
|
*
|
* If the command is BLANK then set the timer for 75 minutes.
|
* Otherwise set it for 10 minutes.
|
*
|
* NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW
|
* AT SPEED 4 IS UNRELIABLE!!!
|
*/
|
|
result = usbat_write_block(us, USBAT_ATA, srb->cmnd, 12,
|
srb->cmnd[0] == GPCMD_BLANK ? 75 : 10, 0);
|
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
return result;
|
|
/* If there is response data to be read in then do it here. */
|
|
if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) {
|
|
/* How many bytes to read in? Check cylL register */
|
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
|
USB_STOR_XFER_GOOD) {
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
if (len > 0xFF) { /* need to read cylH also */
|
len = *status;
|
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
|
USB_STOR_XFER_GOOD) {
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
len += ((unsigned int) *status)<<8;
|
}
|
else
|
len = *status;
|
|
|
result = usbat_read_block(us, scsi_sglist(srb), len,
|
scsi_sg_count(srb));
|
}
|
|
return result;
|
}
|
|
/*
|
* Transport for USBAT02-based CompactFlash and similar storage devices
|
*/
|
static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
|
{
|
int rc;
|
struct usbat_info *info = (struct usbat_info *) (us->extra);
|
unsigned long block, blocks;
|
unsigned char *ptr = us->iobuf;
|
static unsigned char inquiry_response[36] = {
|
0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
|
};
|
|
if (srb->cmnd[0] == INQUIRY) {
|
usb_stor_dbg(us, "INQUIRY - Returning bogus response\n");
|
memcpy(ptr, inquiry_response, sizeof(inquiry_response));
|
fill_inquiry_response(us, ptr, 36);
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (srb->cmnd[0] == READ_CAPACITY) {
|
rc = usbat_flash_check_media(us, info);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
rc = usbat_flash_get_sector_count(us, info);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
/* hard coded 512 byte sectors as per ATA spec */
|
info->ssize = 0x200;
|
usb_stor_dbg(us, "READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
|
info->sectors, info->ssize);
|
|
/*
|
* build the reply
|
* note: must return the sector number of the last sector,
|
* *not* the total number of sectors
|
*/
|
((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
|
((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
|
usb_stor_set_xfer_buf(ptr, 8, srb);
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (srb->cmnd[0] == MODE_SELECT_10) {
|
usb_stor_dbg(us, "Gah! MODE_SELECT_10\n");
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
if (srb->cmnd[0] == READ_10) {
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
|
|
usb_stor_dbg(us, "READ_10: read block 0x%04lx count %ld\n",
|
block, blocks);
|
return usbat_flash_read_data(us, info, block, blocks);
|
}
|
|
if (srb->cmnd[0] == READ_12) {
|
/*
|
* I don't think we'll ever see a READ_12 but support it anyway
|
*/
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
|
((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
|
|
usb_stor_dbg(us, "READ_12: read block 0x%04lx count %ld\n",
|
block, blocks);
|
return usbat_flash_read_data(us, info, block, blocks);
|
}
|
|
if (srb->cmnd[0] == WRITE_10) {
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
|
|
usb_stor_dbg(us, "WRITE_10: write block 0x%04lx count %ld\n",
|
block, blocks);
|
return usbat_flash_write_data(us, info, block, blocks);
|
}
|
|
if (srb->cmnd[0] == WRITE_12) {
|
/*
|
* I don't think we'll ever see a WRITE_12 but support it anyway
|
*/
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
|
((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
|
|
usb_stor_dbg(us, "WRITE_12: write block 0x%04lx count %ld\n",
|
block, blocks);
|
return usbat_flash_write_data(us, info, block, blocks);
|
}
|
|
|
if (srb->cmnd[0] == TEST_UNIT_READY) {
|
usb_stor_dbg(us, "TEST_UNIT_READY\n");
|
|
rc = usbat_flash_check_media(us, info);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
return usbat_check_status(us);
|
}
|
|
if (srb->cmnd[0] == REQUEST_SENSE) {
|
usb_stor_dbg(us, "REQUEST_SENSE\n");
|
|
memset(ptr, 0, 18);
|
ptr[0] = 0xF0;
|
ptr[2] = info->sense_key;
|
ptr[7] = 11;
|
ptr[12] = info->sense_asc;
|
ptr[13] = info->sense_ascq;
|
usb_stor_set_xfer_buf(ptr, 18, srb);
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
|
/*
|
* sure. whatever. not like we can stop the user from popping
|
* the media out of the device (no locking doors, etc)
|
*/
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
usb_stor_dbg(us, "Gah! Unknown command: %d (0x%x)\n",
|
srb->cmnd[0], srb->cmnd[0]);
|
info->sense_key = 0x05;
|
info->sense_asc = 0x20;
|
info->sense_ascq = 0x00;
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
static int init_usbat_cd(struct us_data *us)
|
{
|
return init_usbat(us, USBAT_DEV_HP8200);
|
}
|
|
static int init_usbat_flash(struct us_data *us)
|
{
|
return init_usbat(us, USBAT_DEV_FLASH);
|
}
|
|
static struct scsi_host_template usbat_host_template;
|
|
static int usbat_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 - usbat_usb_ids) + usbat_unusual_dev_list,
|
&usbat_host_template);
|
if (result)
|
return result;
|
|
/*
|
* The actual transport will be determined later by the
|
* initialization routine; this is just a placeholder.
|
*/
|
us->transport_name = "Shuttle USBAT";
|
us->transport = usbat_flash_transport;
|
us->transport_reset = usb_stor_CB_reset;
|
us->max_lun = 0;
|
|
result = usb_stor_probe2(us);
|
return result;
|
}
|
|
static struct usb_driver usbat_driver = {
|
.name = DRV_NAME,
|
.probe = usbat_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 = usbat_usb_ids,
|
.soft_unbind = 1,
|
.no_dynamic_id = 1,
|
};
|
|
module_usb_stor_driver(usbat_driver, usbat_host_template, DRV_NAME);
|
