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1015 lines
24 KiB
1015 lines
24 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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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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|
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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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|
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#include <scsi/scsi.h> |
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#include <scsi/scsi_cmnd.h> |
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|
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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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|
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#define DRV_NAME "ums-sddr55" |
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|
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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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MODULE_IMPORT_NS(USB_STORAGE); |
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|
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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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|
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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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|
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#undef UNUSUAL_DEV |
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|
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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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|
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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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|
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#undef UNUSUAL_DEV |
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|
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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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|
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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|
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usb_stor_dbg(us, "Result for send_command in status %d\n", result); |
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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_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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|
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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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|
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info->fatal_error = 0; |
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info->force_read_only = 0; |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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unsigned int pba; |
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unsigned long address; |
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|
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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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|
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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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|
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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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|
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while (sectors>0) { |
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|
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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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|
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// Read as many sectors as possible in this block |
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|
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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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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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|
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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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|
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address = (pba << info->blockshift) + page; |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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 |
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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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|
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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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|
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while (sectors > 0) { |
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|
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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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|
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pba = info->lba_to_pba[lba]; |
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|
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// Write as many sectors as possible in this block |
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|
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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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if (pba == NOT_ALLOCATED) { |
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/* no pba allocated for this lba, find a free pba to use */ |
|
|
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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) |
|
break; |
|
} |
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} |
|
|
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pba = found_pba; |
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|
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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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|
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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); |
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command[2] = LSB_of(address>>8); |
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command[3] = LSB_of(address); |
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|
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/* set the lba into the command, modulo 1000 */ |
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command[0] = LSB_of(lba % 1000); |
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command[6] = MSB_of(lba % 1000); |
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|
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command[4] |= LSB_of(pages >> info->smallpageshift); |
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command[5] = 0xB0; |
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command[7] = 0x86; |
|
|
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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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if (result != USB_STOR_XFER_GOOD) { |
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usb_stor_dbg(us, "Result for send_command in write_data %d\n", |
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result); |
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|
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/* set_sense_info is superfluous here? */ |
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set_sense_info (3, 0x3, 0);/* peripheral write error */ |
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result = USB_STOR_TRANSPORT_FAILED; |
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goto leave; |
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} |
|
|
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/* send the data */ |
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result = sddr55_bulk_transport(us, |
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DMA_TO_DEVICE, buffer, len); |
|
|
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if (result != USB_STOR_XFER_GOOD) { |
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usb_stor_dbg(us, "Result for send_data in write_data %d\n", |
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result); |
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|
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/* set_sense_info is superfluous here? */ |
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set_sense_info (3, 0x3, 0);/* peripheral write error */ |
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result = USB_STOR_TRANSPORT_FAILED; |
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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, DMA_FROM_DEVICE, status, 6); |
|
|
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if (result != USB_STOR_XFER_GOOD) { |
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usb_stor_dbg(us, "Result for get_status in write_data %d\n", |
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result); |
|
|
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/* set_sense_info is superfluous here? */ |
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set_sense_info (3, 0x3, 0);/* peripheral write error */ |
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result = USB_STOR_TRANSPORT_FAILED; |
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goto leave; |
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} |
|
|
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new_pba = (status[3] + (status[4] << 8) + (status[5] << 16)) |
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>> info->blockshift; |
|
|
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/* check status for error */ |
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if (status[0] == 0xff && status[1] == 0x4) { |
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info->pba_to_lba[new_pba] = BAD_BLOCK; |
|
|
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set_sense_info (3, 0x0c, 0); |
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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, "Updating maps for LBA %04X: old PBA %04X, new PBA %04X\n", |
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lba, pba, new_pba); |
|
|
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/* update the lba<->pba maps, note new_pba might be the same as pba */ |
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info->lba_to_pba[lba] = new_pba; |
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info->pba_to_lba[pba] = UNUSED_BLOCK; |
|
|
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/* check that new_pba wasn't already being used */ |
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if (info->pba_to_lba[new_pba] != UNUSED_BLOCK) { |
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printk(KERN_ERR "sddr55 error: new PBA %04X already in use for LBA %04X\n", |
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new_pba, info->pba_to_lba[new_pba]); |
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info->fatal_error = 1; |
|
set_sense_info (3, 0x31, 0); |
|
result = USB_STOR_TRANSPORT_FAILED; |
|
goto leave; |
|
} |
|
|
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/* update the pba<->lba maps for new_pba */ |
|
info->pba_to_lba[new_pba] = lba % 1000; |
|
|
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page = 0; |
|
lba++; |
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sectors -= pages >> info->smallpageshift; |
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} |
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result = USB_STOR_TRANSPORT_GOOD; |
|
|
|
leave: |
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kfree(buffer); |
|
return result; |
|
} |
|
|
|
static int sddr55_read_deviceID(struct us_data *us, |
|
unsigned char *manufacturerID, |
|
unsigned char *deviceID) { |
|
|
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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);
|
|
|