/*
* Transport for the Sandisk SDDR-55
*/
int sddr55_transport(Scsi_Cmnd *srb, struct us_data *us)
{
int result;
int i;
unsigned char inquiry_response[36] = {
0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00
};
unsigned char mode_page_01[16] = { // write-protected for now
0x03, 0x00, 0x80, 0x00,
0x01, 0x0A,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
unsigned char *ptr;
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 = kmalloc(
sizeof(struct sddr55_card_info), GFP_NOIO);
if (!us->extra)
return USB_STOR_TRANSPORT_ERROR;
memset(us->extra, 0, sizeof(struct sddr55_card_info));
us->extra_destructor = sddr55_card_info_destructor;
}
info = (struct sddr55_card_info *)(us->extra);
ptr = (unsigned char *)srb->request_buffer;
if (srb->cmnd[0] == REQUEST_SENSE) {
i = srb->cmnd[4];
if (i > sizeof info->sense_data)
i = sizeof info->sense_data;
US_DEBUGP("SDDR55: request sense %02x/%02x/%02x\n", info->sense_data[2], info->sense_data[12], info->sense_data[13]);
info->sense_data[0] = 0x70;
info->sense_data[7] = 10;
memcpy (ptr, info->sense_data, i);
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) {
memset(inquiry_response+8, 0, 28);
fill_inquiry_response(us, inquiry_response, 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--;
ptr[0] = MSB_of(capacity>>16);
ptr[1] = LSB_of(capacity>>16);
ptr[2] = MSB_of(capacity&0xFFFF);
ptr[3] = LSB_of(capacity&0xFFFF);
// The page size
ptr[4] = MSB_of(PAGESIZE>>16);
ptr[5] = LSB_of(PAGESIZE>>16);
ptr[6] = MSB_of(PAGESIZE&0xFFFF);
ptr[7] = LSB_of(PAGESIZE&0xFFFF);
sddr55_read_map(us);
return USB_STOR_TRANSPORT_GOOD;
}
/*
* 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;
}