1027 lines
25 KiB
C
Executable File
1027 lines
25 KiB
C
Executable File
/*
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* Driver for SanDisk SDDR-55 SmartMedia reader
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*
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* SDDR55 driver v0.1:
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*
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* First release
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*
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* Current development and maintenance by:
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* (c) 2002 Simon Munton
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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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#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 <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-sddr55"
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MODULE_DESCRIPTION("Driver for SanDisk SDDR-55 SmartMedia reader");
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MODULE_AUTHOR("Simon Munton");
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MODULE_LICENSE("GPL");
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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) }
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static struct usb_device_id sddr55_usb_ids[] = {
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# include "unusual_sddr55.h"
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, sddr55_usb_ids);
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#undef UNUSUAL_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 sddr55_unusual_dev_list[] = {
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# include "unusual_sddr55.h"
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{ } /* Terminating entry */
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};
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#undef UNUSUAL_DEV
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#define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )
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#define LSB_of(s) ((s)&0xFF)
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#define MSB_of(s) ((s)>>8)
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#define PAGESIZE 512
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#define set_sense_info(sk, asc, ascq) \
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do { \
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info->sense_data[2] = sk; \
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info->sense_data[12] = asc; \
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info->sense_data[13] = ascq; \
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} while (0)
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struct sddr55_card_info {
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unsigned long capacity; /* Size of card in bytes */
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int max_log_blks; /* maximum number of logical blocks */
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int pageshift; /* log2 of pagesize */
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int smallpageshift; /* 1 if pagesize == 256 */
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int blocksize; /* Size of block in pages */
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int blockshift; /* log2 of blocksize */
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int blockmask; /* 2^blockshift - 1 */
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int read_only; /* non zero if card is write protected */
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int force_read_only; /* non zero if we find a map error*/
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int *lba_to_pba; /* logical to physical map */
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int *pba_to_lba; /* physical to logical map */
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int fatal_error; /* set if we detect something nasty */
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unsigned long last_access; /* number of jiffies since we last talked to device */
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unsigned char sense_data[18];
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};
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#define NOT_ALLOCATED 0xffffffff
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#define BAD_BLOCK 0xffff
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#define CIS_BLOCK 0x400
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#define UNUSED_BLOCK 0x3ff
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static int
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sddr55_bulk_transport(struct us_data *us, int direction,
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unsigned char *data, unsigned int len) {
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struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
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unsigned int pipe = (direction == DMA_FROM_DEVICE) ?
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us->recv_bulk_pipe : us->send_bulk_pipe;
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if (!len)
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return USB_STOR_XFER_GOOD;
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info->last_access = jiffies;
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return usb_stor_bulk_transfer_buf(us, pipe, data, len, NULL);
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}
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/*
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* check if card inserted, if there is, update read_only status
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* return non zero if no card
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*/
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static int sddr55_status(struct us_data *us)
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{
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int result;
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unsigned char *command = us->iobuf;
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unsigned char *status = us->iobuf;
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struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
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/* send command */
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memset(command, 0, 8);
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command[5] = 0xB0;
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command[7] = 0x80;
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result = sddr55_bulk_transport(us,
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DMA_TO_DEVICE, command, 8);
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usb_stor_dbg(us, "Result for send_command in status %d\n", result);
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if (result != USB_STOR_XFER_GOOD) {
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set_sense_info (4, 0, 0); /* hardware error */
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return USB_STOR_TRANSPORT_ERROR;
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}
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result = sddr55_bulk_transport(us,
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DMA_FROM_DEVICE, status, 4);
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/* expect to get short transfer if no card fitted */
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if (result == USB_STOR_XFER_SHORT || result == USB_STOR_XFER_STALLED) {
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/* had a short transfer, no card inserted, free map memory */
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kfree(info->lba_to_pba);
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kfree(info->pba_to_lba);
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info->lba_to_pba = NULL;
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info->pba_to_lba = NULL;
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info->fatal_error = 0;
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info->force_read_only = 0;
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set_sense_info (2, 0x3a, 0); /* not ready, medium not present */
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return USB_STOR_TRANSPORT_FAILED;
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}
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if (result != USB_STOR_XFER_GOOD) {
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set_sense_info (4, 0, 0); /* hardware error */
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return USB_STOR_TRANSPORT_FAILED;
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}
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/* check write protect status */
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info->read_only = (status[0] & 0x20);
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/* now read status */
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result = sddr55_bulk_transport(us,
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DMA_FROM_DEVICE, status, 2);
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if (result != USB_STOR_XFER_GOOD) {
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set_sense_info (4, 0, 0); /* hardware error */
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}
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return (result == USB_STOR_XFER_GOOD ?
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USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_FAILED);
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}
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static int sddr55_read_data(struct us_data *us,
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unsigned int lba,
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unsigned int page,
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unsigned short sectors) {
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int result = USB_STOR_TRANSPORT_GOOD;
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unsigned char *command = us->iobuf;
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unsigned char *status = us->iobuf;
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struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
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unsigned char *buffer;
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unsigned int pba;
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unsigned long address;
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unsigned short pages;
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unsigned int len, offset;
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struct scatterlist *sg;
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// Since we only read in one block at a time, we have to create
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// a bounce buffer and move the data a piece at a time between the
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// bounce buffer and the actual transfer buffer.
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len = min((unsigned int) sectors, (unsigned int) info->blocksize >>
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info->smallpageshift) * PAGESIZE;
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buffer = kmalloc(len, GFP_NOIO);
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if (buffer == NULL)
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return USB_STOR_TRANSPORT_ERROR; /* out of memory */
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offset = 0;
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sg = NULL;
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while (sectors>0) {
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/* have we got to end? */
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if (lba >= info->max_log_blks)
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break;
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pba = info->lba_to_pba[lba];
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// Read as many sectors as possible in this block
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pages = min((unsigned int) sectors << info->smallpageshift,
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info->blocksize - page);
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len = pages << info->pageshift;
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usb_stor_dbg(us, "Read %02X pages, from PBA %04X (LBA %04X) page %02X\n",
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pages, pba, lba, page);
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if (pba == NOT_ALLOCATED) {
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/* no pba for this lba, fill with zeroes */
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memset (buffer, 0, len);
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} else {
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address = (pba << info->blockshift) + page;
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command[0] = 0;
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command[1] = LSB_of(address>>16);
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command[2] = LSB_of(address>>8);
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command[3] = LSB_of(address);
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command[4] = 0;
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command[5] = 0xB0;
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command[6] = LSB_of(pages << (1 - info->smallpageshift));
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command[7] = 0x85;
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/* send command */
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result = sddr55_bulk_transport(us,
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DMA_TO_DEVICE, command, 8);
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usb_stor_dbg(us, "Result for send_command in read_data %d\n",
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result);
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if (result != USB_STOR_XFER_GOOD) {
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result = USB_STOR_TRANSPORT_ERROR;
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goto leave;
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}
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/* read data */
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result = sddr55_bulk_transport(us,
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DMA_FROM_DEVICE, buffer, len);
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if (result != USB_STOR_XFER_GOOD) {
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result = USB_STOR_TRANSPORT_ERROR;
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goto leave;
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}
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/* now read status */
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result = sddr55_bulk_transport(us,
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DMA_FROM_DEVICE, status, 2);
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if (result != USB_STOR_XFER_GOOD) {
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result = USB_STOR_TRANSPORT_ERROR;
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goto leave;
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}
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/* check status for error */
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if (status[0] == 0xff && status[1] == 0x4) {
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set_sense_info (3, 0x11, 0);
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result = USB_STOR_TRANSPORT_FAILED;
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goto leave;
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}
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}
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// Store the data in the transfer buffer
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usb_stor_access_xfer_buf(buffer, len, us->srb,
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&sg, &offset, TO_XFER_BUF);
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page = 0;
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lba++;
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sectors -= pages >> info->smallpageshift;
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}
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result = USB_STOR_TRANSPORT_GOOD;
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leave:
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kfree(buffer);
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return result;
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}
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static int sddr55_write_data(struct us_data *us,
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unsigned int lba,
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unsigned int page,
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unsigned short sectors) {
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int result = USB_STOR_TRANSPORT_GOOD;
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unsigned char *command = us->iobuf;
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unsigned char *status = us->iobuf;
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struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
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unsigned char *buffer;
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unsigned int pba;
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unsigned int new_pba;
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unsigned long address;
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unsigned short pages;
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int i;
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unsigned int len, offset;
|
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struct scatterlist *sg;
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|
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/* check if we are allowed to write */
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if (info->read_only || info->force_read_only) {
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set_sense_info (7, 0x27, 0); /* read only */
|
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return USB_STOR_TRANSPORT_FAILED;
|
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}
|
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|
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// Since we only write one block at a time, we have to create
|
|
// a bounce buffer and move the data a piece at a time between the
|
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// bounce buffer and the actual transfer buffer.
|
|
|
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len = min((unsigned int) sectors, (unsigned int) info->blocksize >>
|
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info->smallpageshift) * PAGESIZE;
|
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buffer = kmalloc(len, GFP_NOIO);
|
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if (buffer == NULL)
|
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return USB_STOR_TRANSPORT_ERROR;
|
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offset = 0;
|
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sg = NULL;
|
|
|
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while (sectors > 0) {
|
|
|
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/* have we got to end? */
|
|
if (lba >= info->max_log_blks)
|
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break;
|
|
|
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pba = info->lba_to_pba[lba];
|
|
|
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// Write as many sectors as possible in this block
|
|
|
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pages = min((unsigned int) sectors << info->smallpageshift,
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info->blocksize - page);
|
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len = pages << info->pageshift;
|
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|
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// Get the data from the transfer buffer
|
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usb_stor_access_xfer_buf(buffer, len, us->srb,
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&sg, &offset, FROM_XFER_BUF);
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|
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usb_stor_dbg(us, "Write %02X pages, to PBA %04X (LBA %04X) page %02X\n",
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pages, pba, lba, page);
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|
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command[4] = 0;
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|
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if (pba == NOT_ALLOCATED) {
|
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/* no pba allocated for this lba, find a free pba to use */
|
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|
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int max_pba = (info->max_log_blks / 250 ) * 256;
|
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int found_count = 0;
|
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int found_pba = -1;
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|
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/* set pba to first block in zone lba is in */
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pba = (lba / 1000) * 1024;
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|
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usb_stor_dbg(us, "No PBA for LBA %04X\n", lba);
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|
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if (max_pba > 1024)
|
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max_pba = 1024;
|
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|
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/*
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* Scan through the map looking for an unused block
|
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* leave 16 unused blocks at start (or as many as
|
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* possible) since the sddr55 seems to reuse a used
|
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* block when it shouldn't if we don't leave space.
|
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*/
|
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for (i = 0; i < max_pba; i++, pba++) {
|
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if (info->pba_to_lba[pba] == UNUSED_BLOCK) {
|
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found_pba = pba;
|
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if (found_count++ > 16)
|
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break;
|
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}
|
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}
|
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|
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pba = found_pba;
|
|
|
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if (pba == -1) {
|
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/* oh dear */
|
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usb_stor_dbg(us, "Couldn't find unallocated block\n");
|
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|
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set_sense_info (3, 0x31, 0); /* medium error */
|
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result = USB_STOR_TRANSPORT_FAILED;
|
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goto leave;
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}
|
|
|
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usb_stor_dbg(us, "Allocating PBA %04X for LBA %04X\n",
|
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pba, lba);
|
|
|
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/* set writing to unallocated block flag */
|
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command[4] = 0x40;
|
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}
|
|
|
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address = (pba << info->blockshift) + page;
|
|
|
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command[1] = LSB_of(address>>16);
|
|
command[2] = LSB_of(address>>8);
|
|
command[3] = LSB_of(address);
|
|
|
|
/* set the lba into the command, modulo 1000 */
|
|
command[0] = LSB_of(lba % 1000);
|
|
command[6] = MSB_of(lba % 1000);
|
|
|
|
command[4] |= LSB_of(pages >> info->smallpageshift);
|
|
command[5] = 0xB0;
|
|
command[7] = 0x86;
|
|
|
|
/* send command */
|
|
result = sddr55_bulk_transport(us,
|
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DMA_TO_DEVICE, command, 8);
|
|
|
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if (result != USB_STOR_XFER_GOOD) {
|
|
usb_stor_dbg(us, "Result for send_command in write_data %d\n",
|
|
result);
|
|
|
|
/* set_sense_info is superfluous here? */
|
|
set_sense_info (3, 0x3, 0);/* peripheral write error */
|
|
result = USB_STOR_TRANSPORT_FAILED;
|
|
goto leave;
|
|
}
|
|
|
|
/* send the data */
|
|
result = sddr55_bulk_transport(us,
|
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DMA_TO_DEVICE, buffer, len);
|
|
|
|
if (result != USB_STOR_XFER_GOOD) {
|
|
usb_stor_dbg(us, "Result for send_data in write_data %d\n",
|
|
result);
|
|
|
|
/* set_sense_info is superfluous here? */
|
|
set_sense_info (3, 0x3, 0);/* peripheral write error */
|
|
result = USB_STOR_TRANSPORT_FAILED;
|
|
goto leave;
|
|
}
|
|
|
|
/* now read status */
|
|
result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, status, 6);
|
|
|
|
if (result != USB_STOR_XFER_GOOD) {
|
|
usb_stor_dbg(us, "Result for get_status in write_data %d\n",
|
|
result);
|
|
|
|
/* set_sense_info is superfluous here? */
|
|
set_sense_info (3, 0x3, 0);/* peripheral write error */
|
|
result = USB_STOR_TRANSPORT_FAILED;
|
|
goto leave;
|
|
}
|
|
|
|
new_pba = (status[3] + (status[4] << 8) + (status[5] << 16))
|
|
>> info->blockshift;
|
|
|
|
/* check status for error */
|
|
if (status[0] == 0xff && status[1] == 0x4) {
|
|
info->pba_to_lba[new_pba] = BAD_BLOCK;
|
|
|
|
set_sense_info (3, 0x0c, 0);
|
|
result = USB_STOR_TRANSPORT_FAILED;
|
|
goto leave;
|
|
}
|
|
|
|
usb_stor_dbg(us, "Updating maps for LBA %04X: old PBA %04X, new PBA %04X\n",
|
|
lba, pba, new_pba);
|
|
|
|
/* update the lba<->pba maps, note new_pba might be the same as pba */
|
|
info->lba_to_pba[lba] = new_pba;
|
|
info->pba_to_lba[pba] = UNUSED_BLOCK;
|
|
|
|
/* check that new_pba wasn't already being used */
|
|
if (info->pba_to_lba[new_pba] != UNUSED_BLOCK) {
|
|
printk(KERN_ERR "sddr55 error: new PBA %04X already in use for LBA %04X\n",
|
|
new_pba, info->pba_to_lba[new_pba]);
|
|
info->fatal_error = 1;
|
|
set_sense_info (3, 0x31, 0);
|
|
result = USB_STOR_TRANSPORT_FAILED;
|
|
goto leave;
|
|
}
|
|
|
|
/* update the pba<->lba maps for new_pba */
|
|
info->pba_to_lba[new_pba] = lba % 1000;
|
|
|
|
page = 0;
|
|
lba++;
|
|
sectors -= pages >> info->smallpageshift;
|
|
}
|
|
result = USB_STOR_TRANSPORT_GOOD;
|
|
|
|
leave:
|
|
kfree(buffer);
|
|
return result;
|
|
}
|
|
|
|
static int sddr55_read_deviceID(struct us_data *us,
|
|
unsigned char *manufacturerID,
|
|
unsigned char *deviceID) {
|
|
|
|
int result;
|
|
unsigned char *command = us->iobuf;
|
|
unsigned char *content = us->iobuf;
|
|
|
|
memset(command, 0, 8);
|
|
command[5] = 0xB0;
|
|
command[7] = 0x84;
|
|
result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8);
|
|
|
|
usb_stor_dbg(us, "Result of send_control for device ID is %d\n",
|
|
result);
|
|
|
|
if (result != USB_STOR_XFER_GOOD)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
result = sddr55_bulk_transport(us,
|
|
DMA_FROM_DEVICE, content, 4);
|
|
|
|
if (result != USB_STOR_XFER_GOOD)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
*manufacturerID = content[0];
|
|
*deviceID = content[1];
|
|
|
|
if (content[0] != 0xff) {
|
|
result = sddr55_bulk_transport(us,
|
|
DMA_FROM_DEVICE, content, 2);
|
|
}
|
|
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
|
|
static int sddr55_reset(struct us_data *us)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
static unsigned long sddr55_get_capacity(struct us_data *us) {
|
|
|
|
unsigned char uninitialized_var(manufacturerID);
|
|
unsigned char uninitialized_var(deviceID);
|
|
int result;
|
|
struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
|
|
|
|
usb_stor_dbg(us, "Reading capacity...\n");
|
|
|
|
result = sddr55_read_deviceID(us,
|
|
&manufacturerID,
|
|
&deviceID);
|
|
|
|
usb_stor_dbg(us, "Result of read_deviceID is %d\n", result);
|
|
|
|
if (result != USB_STOR_XFER_GOOD)
|
|
return 0;
|
|
|
|
usb_stor_dbg(us, "Device ID = %02X\n", deviceID);
|
|
usb_stor_dbg(us, "Manuf ID = %02X\n", manufacturerID);
|
|
|
|
info->pageshift = 9;
|
|
info->smallpageshift = 0;
|
|
info->blocksize = 16;
|
|
info->blockshift = 4;
|
|
info->blockmask = 15;
|
|
|
|
switch (deviceID) {
|
|
|
|
case 0x6e: // 1MB
|
|
case 0xe8:
|
|
case 0xec:
|
|
info->pageshift = 8;
|
|
info->smallpageshift = 1;
|
|
return 0x00100000;
|
|
|
|
case 0xea: // 2MB
|
|
case 0x64:
|
|
info->pageshift = 8;
|
|
info->smallpageshift = 1;
|
|
case 0x5d: // 5d is a ROM card with pagesize 512.
|
|
return 0x00200000;
|
|
|
|
case 0xe3: // 4MB
|
|
case 0xe5:
|
|
case 0x6b:
|
|
case 0xd5:
|
|
return 0x00400000;
|
|
|
|
case 0xe6: // 8MB
|
|
case 0xd6:
|
|
return 0x00800000;
|
|
|
|
case 0x73: // 16MB
|
|
info->blocksize = 32;
|
|
info->blockshift = 5;
|
|
info->blockmask = 31;
|
|
return 0x01000000;
|
|
|
|
case 0x75: // 32MB
|
|
info->blocksize = 32;
|
|
info->blockshift = 5;
|
|
info->blockmask = 31;
|
|
return 0x02000000;
|
|
|
|
case 0x76: // 64MB
|
|
info->blocksize = 32;
|
|
info->blockshift = 5;
|
|
info->blockmask = 31;
|
|
return 0x04000000;
|
|
|
|
case 0x79: // 128MB
|
|
info->blocksize = 32;
|
|
info->blockshift = 5;
|
|
info->blockmask = 31;
|
|
return 0x08000000;
|
|
|
|
default: // unknown
|
|
return 0;
|
|
|
|
}
|
|
}
|
|
|
|
static int sddr55_read_map(struct us_data *us) {
|
|
|
|
struct sddr55_card_info *info = (struct sddr55_card_info *)(us->extra);
|
|
int numblocks;
|
|
unsigned char *buffer;
|
|
unsigned char *command = us->iobuf;
|
|
int i;
|
|
unsigned short lba;
|
|
unsigned short max_lba;
|
|
int result;
|
|
|
|
if (!info->capacity)
|
|
return -1;
|
|
|
|
numblocks = info->capacity >> (info->blockshift + info->pageshift);
|
|
|
|
buffer = kmalloc( numblocks * 2, GFP_NOIO );
|
|
|
|
if (!buffer)
|
|
return -1;
|
|
|
|
memset(command, 0, 8);
|
|
command[5] = 0xB0;
|
|
command[6] = numblocks * 2 / 256;
|
|
command[7] = 0x8A;
|
|
|
|
result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8);
|
|
|
|
if ( result != USB_STOR_XFER_GOOD) {
|
|
kfree (buffer);
|
|
return -1;
|
|
}
|
|
|
|
result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, buffer, numblocks * 2);
|
|
|
|
if ( result != USB_STOR_XFER_GOOD) {
|
|
kfree (buffer);
|
|
return -1;
|
|
}
|
|
|
|
result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, command, 2);
|
|
|
|
if ( result != USB_STOR_XFER_GOOD) {
|
|
kfree (buffer);
|
|
return -1;
|
|
}
|
|
|
|
kfree(info->lba_to_pba);
|
|
kfree(info->pba_to_lba);
|
|
info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO);
|
|
info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO);
|
|
|
|
if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) {
|
|
kfree(info->lba_to_pba);
|
|
kfree(info->pba_to_lba);
|
|
info->lba_to_pba = NULL;
|
|
info->pba_to_lba = NULL;
|
|
kfree(buffer);
|
|
return -1;
|
|
}
|
|
|
|
memset(info->lba_to_pba, 0xff, numblocks*sizeof(int));
|
|
memset(info->pba_to_lba, 0xff, numblocks*sizeof(int));
|
|
|
|
/* set maximum lba */
|
|
max_lba = info->max_log_blks;
|
|
if (max_lba > 1000)
|
|
max_lba = 1000;
|
|
|
|
/*
|
|
* Each block is 64 bytes of control data, so block i is located in
|
|
* scatterlist block i*64/128k = i*(2^6)*(2^-17) = i*(2^-11)
|
|
*/
|
|
|
|
for (i=0; i<numblocks; i++) {
|
|
int zone = i / 1024;
|
|
|
|
lba = short_pack(buffer[i * 2], buffer[i * 2 + 1]);
|
|
|
|
/*
|
|
* Every 1024 physical blocks ("zone"), the LBA numbers
|
|
* go back to zero, but are within a higher
|
|
* block of LBA's. Also, there is a maximum of
|
|
* 1000 LBA's per zone. In other words, in PBA
|
|
* 1024-2047 you will find LBA 0-999 which are
|
|
* really LBA 1000-1999. Yes, this wastes 24
|
|
* physical blocks per zone. Go figure.
|
|
* These devices can have blocks go bad, so there
|
|
* are 24 spare blocks to use when blocks do go bad.
|
|
*/
|
|
|
|
/*
|
|
* SDDR55 returns 0xffff for a bad block, and 0x400 for the
|
|
* CIS block. (Is this true for cards 8MB or less??)
|
|
* Record these in the physical to logical map
|
|
*/
|
|
|
|
info->pba_to_lba[i] = lba;
|
|
|
|
if (lba >= max_lba) {
|
|
continue;
|
|
}
|
|
|
|
if (info->lba_to_pba[lba + zone * 1000] != NOT_ALLOCATED &&
|
|
!info->force_read_only) {
|
|
printk(KERN_WARNING
|
|
"sddr55: map inconsistency at LBA %04X\n",
|
|
lba + zone * 1000);
|
|
info->force_read_only = 1;
|
|
}
|
|
|
|
if (lba<0x10 || (lba>=0x3E0 && lba<0x3EF))
|
|
usb_stor_dbg(us, "LBA %04X <-> PBA %04X\n", lba, i);
|
|
|
|
info->lba_to_pba[lba + zone * 1000] = i;
|
|
}
|
|
|
|
kfree(buffer);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void sddr55_card_info_destructor(void *extra) {
|
|
struct sddr55_card_info *info = (struct sddr55_card_info *)extra;
|
|
|
|
if (!extra)
|
|
return;
|
|
|
|
kfree(info->lba_to_pba);
|
|
kfree(info->pba_to_lba);
|
|
}
|
|
|
|
|
|
/*
|
|
* Transport for the Sandisk SDDR-55
|
|
*/
|
|
static int sddr55_transport(struct scsi_cmnd *srb, struct us_data *us)
|
|
{
|
|
int result;
|
|
static unsigned char inquiry_response[8] = {
|
|
0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00
|
|
};
|
|
// write-protected for now, no block descriptor support
|
|
static unsigned char mode_page_01[20] = {
|
|
0x0, 0x12, 0x00, 0x80, 0x0, 0x0, 0x0, 0x0,
|
|
0x01, 0x0A,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
|
};
|
|
unsigned char *ptr = us->iobuf;
|
|
unsigned long capacity;
|
|
unsigned int lba;
|
|
unsigned int pba;
|
|
unsigned int page;
|
|
unsigned short pages;
|
|
struct sddr55_card_info *info;
|
|
|
|
if (!us->extra) {
|
|
us->extra = kzalloc(
|
|
sizeof(struct sddr55_card_info), GFP_NOIO);
|
|
if (!us->extra)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
us->extra_destructor = sddr55_card_info_destructor;
|
|
}
|
|
|
|
info = (struct sddr55_card_info *)(us->extra);
|
|
|
|
if (srb->cmnd[0] == REQUEST_SENSE) {
|
|
usb_stor_dbg(us, "request sense %02x/%02x/%02x\n",
|
|
info->sense_data[2],
|
|
info->sense_data[12],
|
|
info->sense_data[13]);
|
|
|
|
memcpy (ptr, info->sense_data, sizeof info->sense_data);
|
|
ptr[0] = 0x70;
|
|
ptr[7] = 11;
|
|
usb_stor_set_xfer_buf (ptr, sizeof info->sense_data, srb);
|
|
memset (info->sense_data, 0, sizeof info->sense_data);
|
|
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
memset (info->sense_data, 0, sizeof info->sense_data);
|
|
|
|
/*
|
|
* Dummy up a response for INQUIRY since SDDR55 doesn't
|
|
* respond to INQUIRY commands
|
|
*/
|
|
|
|
if (srb->cmnd[0] == INQUIRY) {
|
|
memcpy(ptr, inquiry_response, 8);
|
|
fill_inquiry_response(us, ptr, 36);
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
/*
|
|
* only check card status if the map isn't allocated, ie no card seen yet
|
|
* or if it's been over half a second since we last accessed it
|
|
*/
|
|
if (info->lba_to_pba == NULL || time_after(jiffies, info->last_access + HZ/2)) {
|
|
|
|
/* check to see if a card is fitted */
|
|
result = sddr55_status (us);
|
|
if (result) {
|
|
result = sddr55_status (us);
|
|
if (!result) {
|
|
set_sense_info (6, 0x28, 0); /* new media, set unit attention, not ready to ready */
|
|
}
|
|
return USB_STOR_TRANSPORT_FAILED;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* if we detected a problem with the map when writing,
|
|
* don't allow any more access
|
|
*/
|
|
if (info->fatal_error) {
|
|
|
|
set_sense_info (3, 0x31, 0);
|
|
return USB_STOR_TRANSPORT_FAILED;
|
|
}
|
|
|
|
if (srb->cmnd[0] == READ_CAPACITY) {
|
|
|
|
capacity = sddr55_get_capacity(us);
|
|
|
|
if (!capacity) {
|
|
set_sense_info (3, 0x30, 0); /* incompatible medium */
|
|
return USB_STOR_TRANSPORT_FAILED;
|
|
}
|
|
|
|
info->capacity = capacity;
|
|
|
|
/*
|
|
* figure out the maximum logical block number, allowing for
|
|
* the fact that only 250 out of every 256 are used
|
|
*/
|
|
info->max_log_blks = ((info->capacity >> (info->pageshift + info->blockshift)) / 256) * 250;
|
|
|
|
/*
|
|
* Last page in the card, adjust as we only use 250 out of
|
|
* every 256 pages
|
|
*/
|
|
capacity = (capacity / 256) * 250;
|
|
|
|
capacity /= PAGESIZE;
|
|
capacity--;
|
|
|
|
((__be32 *) ptr)[0] = cpu_to_be32(capacity);
|
|
((__be32 *) ptr)[1] = cpu_to_be32(PAGESIZE);
|
|
usb_stor_set_xfer_buf(ptr, 8, srb);
|
|
|
|
sddr55_read_map(us);
|
|
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
if (srb->cmnd[0] == MODE_SENSE_10) {
|
|
|
|
memcpy(ptr, mode_page_01, sizeof mode_page_01);
|
|
ptr[3] = (info->read_only || info->force_read_only) ? 0x80 : 0;
|
|
usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb);
|
|
|
|
if ( (srb->cmnd[2] & 0x3F) == 0x01 ) {
|
|
usb_stor_dbg(us, "Dummy up request for mode page 1\n");
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
|
|
} else if ( (srb->cmnd[2] & 0x3F) == 0x3F ) {
|
|
usb_stor_dbg(us, "Dummy up request for all mode pages\n");
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
set_sense_info (5, 0x24, 0); /* invalid field in command */
|
|
return USB_STOR_TRANSPORT_FAILED;
|
|
}
|
|
|
|
if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
|
|
|
|
usb_stor_dbg(us, "%s medium removal. Not that I can do anything about it...\n",
|
|
(srb->cmnd[4]&0x03) ? "Prevent" : "Allow");
|
|
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
|
|
}
|
|
|
|
if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) {
|
|
|
|
page = short_pack(srb->cmnd[3], srb->cmnd[2]);
|
|
page <<= 16;
|
|
page |= short_pack(srb->cmnd[5], srb->cmnd[4]);
|
|
pages = short_pack(srb->cmnd[8], srb->cmnd[7]);
|
|
|
|
page <<= info->smallpageshift;
|
|
|
|
// convert page to block and page-within-block
|
|
|
|
lba = page >> info->blockshift;
|
|
page = page & info->blockmask;
|
|
|
|
// locate physical block corresponding to logical block
|
|
|
|
if (lba >= info->max_log_blks) {
|
|
|
|
usb_stor_dbg(us, "Error: Requested LBA %04X exceeds maximum block %04X\n",
|
|
lba, info->max_log_blks - 1);
|
|
|
|
set_sense_info (5, 0x24, 0); /* invalid field in command */
|
|
|
|
return USB_STOR_TRANSPORT_FAILED;
|
|
}
|
|
|
|
pba = info->lba_to_pba[lba];
|
|
|
|
if (srb->cmnd[0] == WRITE_10) {
|
|
usb_stor_dbg(us, "WRITE_10: write block %04X (LBA %04X) page %01X pages %d\n",
|
|
pba, lba, page, pages);
|
|
|
|
return sddr55_write_data(us, lba, page, pages);
|
|
} else {
|
|
usb_stor_dbg(us, "READ_10: read block %04X (LBA %04X) page %01X pages %d\n",
|
|
pba, lba, page, pages);
|
|
|
|
return sddr55_read_data(us, lba, page, pages);
|
|
}
|
|
}
|
|
|
|
|
|
if (srb->cmnd[0] == TEST_UNIT_READY) {
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
if (srb->cmnd[0] == START_STOP) {
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
set_sense_info (5, 0x20, 0); /* illegal command */
|
|
|
|
return USB_STOR_TRANSPORT_FAILED; // FIXME: sense buffer?
|
|
}
|
|
|
|
static struct scsi_host_template sddr55_host_template;
|
|
|
|
static int sddr55_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 - sddr55_usb_ids) + sddr55_unusual_dev_list,
|
|
&sddr55_host_template);
|
|
if (result)
|
|
return result;
|
|
|
|
us->transport_name = "SDDR55";
|
|
us->transport = sddr55_transport;
|
|
us->transport_reset = sddr55_reset;
|
|
us->max_lun = 0;
|
|
|
|
result = usb_stor_probe2(us);
|
|
return result;
|
|
}
|
|
|
|
static struct usb_driver sddr55_driver = {
|
|
.name = DRV_NAME,
|
|
.probe = sddr55_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 = sddr55_usb_ids,
|
|
.soft_unbind = 1,
|
|
.no_dynamic_id = 1,
|
|
};
|
|
|
|
module_usb_stor_driver(sddr55_driver, sddr55_host_template, DRV_NAME);
|