// SPDX-License-Identifier: GPL-2.0+
|
/*
|
* Driver for SanDisk SDDR-55 SmartMedia reader
|
*
|
* SDDR55 driver v0.1:
|
*
|
* First release
|
*
|
* Current development and maintenance by:
|
* (c) 2002 Simon Munton
|
*/
|
|
#include <linux/jiffies.h>
|
#include <linux/errno.h>
|
#include <linux/module.h>
|
#include <linux/slab.h>
|
|
#include <scsi/scsi.h>
|
#include <scsi/scsi_cmnd.h>
|
|
#include "usb.h"
|
#include "transport.h"
|
#include "protocol.h"
|
#include "debug.h"
|
#include "scsiglue.h"
|
|
#define DRV_NAME "ums-sddr55"
|
|
MODULE_DESCRIPTION("Driver for SanDisk SDDR-55 SmartMedia reader");
|
MODULE_AUTHOR("Simon Munton");
|
MODULE_LICENSE("GPL");
|
MODULE_IMPORT_NS(USB_STORAGE);
|
|
/*
|
* The table of devices
|
*/
|
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
|
vendorName, productName, useProtocol, useTransport, \
|
initFunction, flags) \
|
{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
|
.driver_info = (flags) }
|
|
static struct usb_device_id sddr55_usb_ids[] = {
|
# include "unusual_sddr55.h"
|
{ } /* Terminating entry */
|
};
|
MODULE_DEVICE_TABLE(usb, sddr55_usb_ids);
|
|
#undef UNUSUAL_DEV
|
|
/*
|
* The flags table
|
*/
|
#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
|
vendor_name, product_name, use_protocol, use_transport, \
|
init_function, Flags) \
|
{ \
|
.vendorName = vendor_name, \
|
.productName = product_name, \
|
.useProtocol = use_protocol, \
|
.useTransport = use_transport, \
|
.initFunction = init_function, \
|
}
|
|
static struct us_unusual_dev sddr55_unusual_dev_list[] = {
|
# include "unusual_sddr55.h"
|
{ } /* Terminating entry */
|
};
|
|
#undef UNUSUAL_DEV
|
|
|
#define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )
|
#define LSB_of(s) ((s)&0xFF)
|
#define MSB_of(s) ((s)>>8)
|
#define PAGESIZE 512
|
|
#define set_sense_info(sk, asc, ascq) \
|
do { \
|
info->sense_data[2] = sk; \
|
info->sense_data[12] = asc; \
|
info->sense_data[13] = ascq; \
|
} while (0)
|
|
|
struct sddr55_card_info {
|
unsigned long capacity; /* Size of card in bytes */
|
int max_log_blks; /* maximum number of logical blocks */
|
int pageshift; /* log2 of pagesize */
|
int smallpageshift; /* 1 if pagesize == 256 */
|
int blocksize; /* Size of block in pages */
|
int blockshift; /* log2 of blocksize */
|
int blockmask; /* 2^blockshift - 1 */
|
int read_only; /* non zero if card is write protected */
|
int force_read_only; /* non zero if we find a map error*/
|
int *lba_to_pba; /* logical to physical map */
|
int *pba_to_lba; /* physical to logical map */
|
int fatal_error; /* set if we detect something nasty */
|
unsigned long last_access; /* number of jiffies since we last talked to device */
|
unsigned char sense_data[18];
|
};
|
|
|
#define NOT_ALLOCATED 0xffffffff
|
#define BAD_BLOCK 0xffff
|
#define CIS_BLOCK 0x400
|
#define UNUSED_BLOCK 0x3ff
|
|
static int
|
sddr55_bulk_transport(struct us_data *us, int direction,
|
unsigned char *data, unsigned int len) {
|
struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
|
unsigned int pipe = (direction == DMA_FROM_DEVICE) ?
|
us->recv_bulk_pipe : us->send_bulk_pipe;
|
|
if (!len)
|
return USB_STOR_XFER_GOOD;
|
info->last_access = jiffies;
|
return usb_stor_bulk_transfer_buf(us, pipe, data, len, NULL);
|
}
|
|
/*
|
* check if card inserted, if there is, update read_only status
|
* return non zero if no card
|
*/
|
|
static int sddr55_status(struct us_data *us)
|
{
|
int result;
|
unsigned char *command = us->iobuf;
|
unsigned char *status = us->iobuf;
|
struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
|
|
/* send command */
|
memset(command, 0, 8);
|
command[5] = 0xB0;
|
command[7] = 0x80;
|
result = sddr55_bulk_transport(us,
|
DMA_TO_DEVICE, command, 8);
|
|
usb_stor_dbg(us, "Result for send_command in status %d\n", result);
|
|
if (result != USB_STOR_XFER_GOOD) {
|
set_sense_info (4, 0, 0); /* hardware error */
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
result = sddr55_bulk_transport(us,
|
DMA_FROM_DEVICE, status, 4);
|
|
/* expect to get short transfer if no card fitted */
|
if (result == USB_STOR_XFER_SHORT || result == USB_STOR_XFER_STALLED) {
|
/* had a short transfer, no card inserted, free map memory */
|
kfree(info->lba_to_pba);
|
kfree(info->pba_to_lba);
|
info->lba_to_pba = NULL;
|
info->pba_to_lba = NULL;
|
|
info->fatal_error = 0;
|
info->force_read_only = 0;
|
|
set_sense_info (2, 0x3a, 0); /* not ready, medium not present */
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
if (result != USB_STOR_XFER_GOOD) {
|
set_sense_info (4, 0, 0); /* hardware error */
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
/* check write protect status */
|
info->read_only = (status[0] & 0x20);
|
|
/* now read status */
|
result = sddr55_bulk_transport(us,
|
DMA_FROM_DEVICE, status, 2);
|
|
if (result != USB_STOR_XFER_GOOD) {
|
set_sense_info (4, 0, 0); /* hardware error */
|
}
|
|
return (result == USB_STOR_XFER_GOOD ?
|
USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_FAILED);
|
}
|
|
|
static int sddr55_read_data(struct us_data *us,
|
unsigned int lba,
|
unsigned int page,
|
unsigned short sectors) {
|
|
int result = USB_STOR_TRANSPORT_GOOD;
|
unsigned char *command = us->iobuf;
|
unsigned char *status = us->iobuf;
|
struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
|
unsigned char *buffer;
|
|
unsigned int pba;
|
unsigned long address;
|
|
unsigned short pages;
|
unsigned int len, offset;
|
struct scatterlist *sg;
|
|
// 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 = min((unsigned int) sectors, (unsigned int) info->blocksize >>
|
info->smallpageshift) * PAGESIZE;
|
buffer = kmalloc(len, GFP_NOIO);
|
if (buffer == NULL)
|
return USB_STOR_TRANSPORT_ERROR; /* out of memory */
|
offset = 0;
|
sg = NULL;
|
|
while (sectors>0) {
|
|
/* have we got to end? */
|
if (lba >= info->max_log_blks)
|
break;
|
|
pba = info->lba_to_pba[lba];
|
|
// Read as many sectors as possible in this block
|
|
pages = min((unsigned int) sectors << info->smallpageshift,
|
info->blocksize - page);
|
len = pages << info->pageshift;
|
|
usb_stor_dbg(us, "Read %02X pages, from PBA %04X (LBA %04X) page %02X\n",
|
pages, pba, lba, page);
|
|
if (pba == NOT_ALLOCATED) {
|
/* no pba for this lba, fill with zeroes */
|
memset (buffer, 0, len);
|
} else {
|
|
address = (pba << info->blockshift) + page;
|
|
command[0] = 0;
|
command[1] = LSB_of(address>>16);
|
command[2] = LSB_of(address>>8);
|
command[3] = LSB_of(address);
|
|
command[4] = 0;
|
command[5] = 0xB0;
|
command[6] = LSB_of(pages << (1 - info->smallpageshift));
|
command[7] = 0x85;
|
|
/* send command */
|
result = sddr55_bulk_transport(us,
|
DMA_TO_DEVICE, command, 8);
|
|
usb_stor_dbg(us, "Result for send_command in read_data %d\n",
|
result);
|
|
if (result != USB_STOR_XFER_GOOD) {
|
result = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
/* read data */
|
result = sddr55_bulk_transport(us,
|
DMA_FROM_DEVICE, buffer, len);
|
|
if (result != USB_STOR_XFER_GOOD) {
|
result = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
/* now read status */
|
result = sddr55_bulk_transport(us,
|
DMA_FROM_DEVICE, status, 2);
|
|
if (result != USB_STOR_XFER_GOOD) {
|
result = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
/* check status for error */
|
if (status[0] == 0xff && status[1] == 0x4) {
|
set_sense_info (3, 0x11, 0);
|
result = USB_STOR_TRANSPORT_FAILED;
|
goto leave;
|
}
|
}
|
|
// Store the data in the transfer buffer
|
usb_stor_access_xfer_buf(buffer, len, us->srb,
|
&sg, &offset, TO_XFER_BUF);
|
|
page = 0;
|
lba++;
|
sectors -= pages >> info->smallpageshift;
|
}
|
|
result = USB_STOR_TRANSPORT_GOOD;
|
|
leave:
|
kfree(buffer);
|
|
return result;
|
}
|
|
static int sddr55_write_data(struct us_data *us,
|
unsigned int lba,
|
unsigned int page,
|
unsigned short sectors) {
|
|
int result = USB_STOR_TRANSPORT_GOOD;
|
unsigned char *command = us->iobuf;
|
unsigned char *status = us->iobuf;
|
struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;
|
unsigned char *buffer;
|
|
unsigned int pba;
|
unsigned int new_pba;
|
unsigned long address;
|
|
unsigned short pages;
|
int i;
|
unsigned int len, offset;
|
struct scatterlist *sg;
|
|
/* check if we are allowed to write */
|
if (info->read_only || info->force_read_only) {
|
set_sense_info (7, 0x27, 0); /* read only */
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
// 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
|
// bounce buffer and the actual transfer buffer.
|
|
len = min((unsigned int) sectors, (unsigned int) info->blocksize >>
|
info->smallpageshift) * PAGESIZE;
|
buffer = kmalloc(len, GFP_NOIO);
|
if (buffer == NULL)
|
return USB_STOR_TRANSPORT_ERROR;
|
offset = 0;
|
sg = NULL;
|
|
while (sectors > 0) {
|
|
/* have we got to end? */
|
if (lba >= info->max_log_blks)
|
break;
|
|
pba = info->lba_to_pba[lba];
|
|
// Write as many sectors as possible in this block
|
|
pages = min((unsigned int) sectors << info->smallpageshift,
|
info->blocksize - page);
|
len = pages << info->pageshift;
|
|
// Get the data from the transfer buffer
|
usb_stor_access_xfer_buf(buffer, len, us->srb,
|
&sg, &offset, FROM_XFER_BUF);
|
|
usb_stor_dbg(us, "Write %02X pages, to PBA %04X (LBA %04X) page %02X\n",
|
pages, pba, lba, page);
|
|
command[4] = 0;
|
|
if (pba == NOT_ALLOCATED) {
|
/* no pba allocated for this lba, find a free pba to use */
|
|
int max_pba = (info->max_log_blks / 250 ) * 256;
|
int found_count = 0;
|
int found_pba = -1;
|
|
/* set pba to first block in zone lba is in */
|
pba = (lba / 1000) * 1024;
|
|
usb_stor_dbg(us, "No PBA for LBA %04X\n", lba);
|
|
if (max_pba > 1024)
|
max_pba = 1024;
|
|
/*
|
* Scan through the map looking for an unused block
|
* leave 16 unused blocks at start (or as many as
|
* possible) since the sddr55 seems to reuse a used
|
* block when it shouldn't if we don't leave space.
|
*/
|
for (i = 0; i < max_pba; i++, pba++) {
|
if (info->pba_to_lba[pba] == UNUSED_BLOCK) {
|
found_pba = pba;
|
if (found_count++ > 16)
|
break;
|
}
|
}
|
|
pba = found_pba;
|
|
if (pba == -1) {
|
/* oh dear */
|
usb_stor_dbg(us, "Couldn't find unallocated block\n");
|
|
set_sense_info (3, 0x31, 0); /* medium error */
|
result = USB_STOR_TRANSPORT_FAILED;
|
goto leave;
|
}
|
|
usb_stor_dbg(us, "Allocating PBA %04X for LBA %04X\n",
|
pba, lba);
|
|
/* set writing to unallocated block flag */
|
command[4] = 0x40;
|
}
|
|
address = (pba << info->blockshift) + page;
|
|
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,
|
DMA_TO_DEVICE, command, 8);
|
|
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,
|
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 manufacturerID;
|
unsigned char 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;
|
fallthrough;
|
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_array(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_array(numblocks, sizeof(int), GFP_NOIO);
|
info->pba_to_lba = kmalloc_array(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);
|
