sddr09.c
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上传日期:2013-04-10
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- /* Driver for SanDisk SDDR-09 SmartMedia reader
- *
- * $Id: sddr09.c,v 1.23 2002/02/25 00:40:13 mdharm Exp $
- *
- * SDDR09 driver v0.1:
- *
- * First release
- *
- * Current development and maintenance by:
- * (c) 2000, 2001 Robert Baruch (autophile@starband.net)
- *
- * Developed with the assistance of:
- * (c) 2002 Alan Stern <stern@rowland.org>
- *
- * The SanDisk SDDR-09 SmartMedia reader uses the Shuttle EUSB-01 chip.
- * This chip is a programmable USB controller. In the SDDR-09, it has
- * been programmed to obey a certain limited set of SCSI commands. This
- * driver translates the "real" SCSI commands to the SDDR-09 SCSI
- * commands.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #include "transport.h"
- #include "protocol.h"
- #include "usb.h"
- #include "debug.h"
- #include "sddr09.h"
- #include <linux/sched.h>
- #include <linux/errno.h>
- #include <linux/slab.h>
- #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )
- #define LSB_of(s) ((s)&0xFF)
- #define MSB_of(s) ((s)>>8)
- /*
- * Send a control message and wait for the response.
- *
- * us - the pointer to the us_data structure for the device to use
- *
- * request - the URB Setup Packet's first 6 bytes. The first byte always
- * corresponds to the request type, and the second byte always corresponds
- * to the request. The other 4 bytes do not correspond to value and index,
- * since they are used in a custom way by the SCM protocol.
- *
- * xfer_data - a buffer from which to get, or to which to store, any data
- * that gets send or received, respectively, with the URB. Even though
- * it looks like we allocate a buffer in this code for the data, xfer_data
- * must contain enough allocated space.
- *
- * xfer_len - the number of bytes to send or receive with the URB.
- *
- */
- static int sddr09_send_control(struct us_data *us,
- int pipe,
- unsigned char request,
- unsigned char requesttype,
- unsigned short value,
- unsigned short index,
- unsigned char *xfer_data,
- unsigned int xfer_len) {
- int result;
- // If data is going to be sent or received with the URB,
- // then allocate a buffer for it. If data is to be sent,
- // copy the data into the buffer.
- /*
- if (xfer_len > 0) {
- buffer = kmalloc(xfer_len, GFP_NOIO);
- if (!(command[0] & USB_DIR_IN))
- memcpy(buffer, xfer_data, xfer_len);
- }
- */
- // Send the URB to the device and wait for a response.
- /* Why are request and request type reversed in this call? */
- result = usb_stor_control_msg(us, pipe,
- request, requesttype, value, index,
- xfer_data, xfer_len);
- // If data was sent or received with the URB, free the buffer we
- // allocated earlier, but not before reading the data out of the
- // buffer if we wanted to receive data.
- /*
- if (xfer_len > 0) {
- if (command[0] & USB_DIR_IN)
- memcpy(xfer_data, buffer, xfer_len);
- kfree(buffer);
- }
- */
- // Check the return code for the command.
- if (result < 0) {
- /* if the command was aborted, indicate that */
- if (result == -ENOENT)
- return USB_STOR_TRANSPORT_ABORTED;
- /* a stall is a fatal condition from the device */
- if (result == -EPIPE) {
- US_DEBUGP("-- Stall on control pipe. Clearingn");
- result = usb_stor_clear_halt(us, pipe);
- US_DEBUGP("-- usb_stor_clear_halt() returns %dn", result);
- return USB_STOR_TRANSPORT_FAILED;
- }
- /* Uh oh... serious problem here */
- return USB_STOR_TRANSPORT_ERROR;
- }
- return USB_STOR_TRANSPORT_GOOD;
- }
- static int sddr09_raw_bulk(struct us_data *us,
- int direction,
- unsigned char *data,
- unsigned int len) {
- int result;
- int act_len;
- int pipe;
- if (direction == SCSI_DATA_READ)
- pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
- else
- pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
- result = usb_stor_bulk_msg(us, data, pipe, len, &act_len);
- /* if we stall, we need to clear it before we go on */
- if (result == -EPIPE) {
- US_DEBUGP("EPIPE: clearing endpoint halt for"
- " pipe 0x%x, stalled at %d bytesn",
- pipe, act_len);
- usb_stor_clear_halt(us, pipe);
- }
- if (result) {
- /* NAK - that means we've retried a few times already */
- if (result == -ETIMEDOUT) {
- US_DEBUGP("usbat_raw_bulk():"
- " device NAKedn");
- return US_BULK_TRANSFER_FAILED;
- }
- /* -ENOENT -- we canceled this transfer */
- if (result == -ENOENT) {
- US_DEBUGP("usbat_raw_bulk():"
- " transfer abortedn");
- return US_BULK_TRANSFER_ABORTED;
- }
- if (result == -EPIPE) {
- US_DEBUGP("usbat_raw_bulk():"
- " output pipe stalledn");
- return USB_STOR_TRANSPORT_FAILED;
- }
- /* the catch-all case */
- US_DEBUGP("us_transfer_partial(): unknown errorn");
- return US_BULK_TRANSFER_FAILED;
- }
- if (act_len != len) {
- US_DEBUGP("Warning: Transferred only %d bytesn",
- act_len);
- return US_BULK_TRANSFER_SHORT;
- }
- US_DEBUGP("Transferred %d of %d bytesn", act_len, len);
- return US_BULK_TRANSFER_GOOD;
- }
- /*
- * Note: direction must be set if command_len == 0.
- */
- static int sddr09_bulk_transport(struct us_data *us,
- int direction,
- unsigned char *data,
- unsigned int len,
- int use_sg) {
- int result = USB_STOR_TRANSPORT_GOOD;
- int transferred = 0;
- int i;
- struct scatterlist *sg;
- char string[64];
- if (len==0)
- return USB_STOR_TRANSPORT_GOOD;
- /* transfer the data */
- if (direction == SCSI_DATA_WRITE) {
- /* Debug-print the first 48 bytes of the write transfer */
- if (!use_sg) {
- strcpy(string, "wr: ");
- for (i=0; i<len && i<48; i++) {
- sprintf(string+strlen(string), "%02X ",
- data[i]);
- if ((i%16)==15) {
- US_DEBUGP("%sn", string);
- strcpy(string, "wr: ");
- }
- }
- if ((i%16)!=0)
- US_DEBUGP("%sn", string);
- }
- }
- US_DEBUGP("SCM data %s transfer %d sg buffers %dn",
- ( direction==SCSI_DATA_READ ? "in" : "out"),
- len, use_sg);
- if (!use_sg)
- result = sddr09_raw_bulk(us, direction, data, len);
- else {
- sg = (struct scatterlist *)data;
- for (i=0; i<use_sg && transferred<len; i++) {
- result = sddr09_raw_bulk(us, direction,
- sg[i].address,
- len-transferred > sg[i].length ?
- sg[i].length : len-transferred);
- if (result!=US_BULK_TRANSFER_GOOD)
- break;
- transferred += sg[i].length;
- }
- }
- if (direction == SCSI_DATA_READ) {
- /* Debug-print the first 48 bytes of the read transfer */
- if (!use_sg) {
- strcpy(string, "rd: ");
- for (i=0; i<len && i<48; i++) {
- sprintf(string+strlen(string), "%02X ",
- data[i]);
- if ((i%16)==15) {
- US_DEBUGP("%sn", string);
- strcpy(string, "rd: ");
- }
- }
- if ((i%16)!=0)
- US_DEBUGP("%sn", string);
- }
- }
- return result;
- }
- int sddr09_read_data(struct us_data *us,
- unsigned long address,
- unsigned short sectors,
- unsigned char *content,
- int use_sg) {
- int result;
- unsigned char command[12] = {
- 0xe8, 0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
- struct sddr09_card_info *info = (struct sddr09_card_info *)us->extra;
- unsigned int lba;
- unsigned int pba;
- unsigned short page;
- unsigned short pages;
- unsigned char *buffer = NULL;
- unsigned char *ptr;
- struct scatterlist *sg = NULL;
- int i;
- int len;
- int transferred;
- // If we're using scatter-gather, we have to create a new
- // buffer to read all of the data in first, since a
- // scatter-gather buffer could in theory start in the middle
- // of a page, which would be bad. A developer who wants a
- // challenge might want to write a limited-buffer
- // version of this code.
- len = sectors*info->pagesize;
- if (use_sg) {
- sg = (struct scatterlist *)content;
- buffer = kmalloc(len, GFP_NOIO);
- if (buffer == NULL)
- return USB_STOR_TRANSPORT_ERROR;
- ptr = buffer;
- } else
- ptr = content;
- // Figure out the initial LBA and page
- pba = address >> (info->pageshift + info->blockshift);
- lba = info->pba_to_lba[pba];
- page = (address >> info->pageshift) & info->blockmask;
- // This could be made much more efficient by checking for
- // contiguous LBA's. Another exercise left to the student.
- while (sectors>0) {
- pba = info->lba_to_pba[lba];
- // Read as many sectors as possible in this block
- pages = info->blocksize - page;
- if (pages > sectors)
- pages = sectors;
- US_DEBUGP("Read %02X pages, from PBA %04X"
- " (LBA %04X) page %02Xn",
- pages, pba, lba, page);
- address = ( (pba << info->blockshift) + page ) <<
- info->pageshift;
- // Unlike in the documentation, the address is in
- // words of 2 bytes.
- command[2] = MSB_of(address>>17);
- command[3] = LSB_of(address>>17);
- command[4] = MSB_of((address>>1)&0xFFFF);
- command[5] = LSB_of((address>>1)&0xFFFF);
- command[10] = MSB_of(pages);
- command[11] = LSB_of(pages);
- result = sddr09_send_control(us,
- usb_sndctrlpipe(us->pusb_dev,0),
- 0,
- 0x41,
- 0,
- 0,
- command,
- 12);
- US_DEBUGP("Result for send_control in read_data %dn",
- result);
- if (result != USB_STOR_TRANSPORT_GOOD) {
- if (use_sg)
- kfree(buffer);
- return result;
- }
- result = sddr09_bulk_transport(us,
- SCSI_DATA_READ, ptr,
- pages<<info->pageshift, 0);
- if (result != USB_STOR_TRANSPORT_GOOD) {
- if (use_sg)
- kfree(buffer);
- return result;
- }
- page = 0;
- lba++;
- sectors -= pages;
- ptr += (pages << info->pageshift);
- }
- if (use_sg) {
- transferred = 0;
- for (i=0; i<use_sg && transferred<len; i++) {
- memcpy(sg[i].address, buffer+transferred,
- len-transferred > sg[i].length ?
- sg[i].length : len-transferred);
- transferred += sg[i].length;
- }
- kfree(buffer);
- }
- return USB_STOR_TRANSPORT_GOOD;
- }
- int sddr09_read_control(struct us_data *us,
- unsigned long address,
- unsigned short blocks,
- unsigned char *content,
- int use_sg) {
- // Unlike in the documentation, the last two bytes are the
- // number of blocks, not sectors.
- int result;
- unsigned char command[12] = {
- 0xe8, 0x21, MSB_of(address>>16),
- LSB_of(address>>16), MSB_of(address&0xFFFF),
- LSB_of(address&0xFFFF), 0, 0, 0, 0,
- MSB_of(blocks), LSB_of(blocks)
- };
- US_DEBUGP("Read control address %08lX blocks %04Xn",
- address, blocks);
- result = sddr09_send_control(us,
- usb_sndctrlpipe(us->pusb_dev,0),
- 0,
- 0x41,
- 0,
- 0,
- command,
- 12);
- US_DEBUGP("Result for send_control in read_control %dn",
- result);
- if (result != USB_STOR_TRANSPORT_GOOD)
- return result;
- result = sddr09_bulk_transport(us,
- SCSI_DATA_READ, content,
- blocks<<6, use_sg); // 0x40 bytes per block
- US_DEBUGP("Result for bulk read in read_control %dn",
- result);
- return result;
- }
- int sddr09_read_deviceID(struct us_data *us,
- unsigned char *manufacturerID,
- unsigned char *deviceID) {
- int result;
- unsigned char command[12] = {
- 0xed, 0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
- unsigned char content[64];
- result = sddr09_send_control(us,
- usb_sndctrlpipe(us->pusb_dev,0),
- 0,
- 0x41,
- 0,
- 0,
- command,
- 12);
- US_DEBUGP("Result of send_control for device ID is %dn",
- result);
- if (result != USB_STOR_TRANSPORT_GOOD)
- return result;
- result = sddr09_bulk_transport(us,
- SCSI_DATA_READ, content,
- 64, 0);
- *manufacturerID = content[0];
- *deviceID = content[1];
- return result;
- }
- int sddr09_read_status(struct us_data *us,
- unsigned char *status) {
- int result;
- unsigned char command[12] = {
- 0xec, 0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
- result = sddr09_send_control(us,
- usb_sndctrlpipe(us->pusb_dev,0),
- 0,
- 0x41,
- 0,
- 0,
- command,
- 12);
- if (result != USB_STOR_TRANSPORT_GOOD)
- return result;
- result = sddr09_bulk_transport(us,
- SCSI_DATA_READ, status,
- 1, 0);
- return result;
- }
- int sddr09_reset(struct us_data *us) {
- int result;
- unsigned char command[12] = {
- 0xeb, 0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
- result = sddr09_send_control(us,
- usb_sndctrlpipe(us->pusb_dev,0),
- 0,
- 0x41,
- 0,
- 0,
- command,
- 12);
- return result;
- }
- unsigned long sddr09_get_capacity(struct us_data *us,
- unsigned int *pagesize, unsigned int *blocksize) {
- unsigned char manufacturerID;
- unsigned char deviceID;
- int result;
- US_DEBUGP("Reading capacity...n");
- result = sddr09_read_deviceID(us,
- &manufacturerID,
- &deviceID);
- US_DEBUGP("Result of read_deviceID is %dn",
- result);
- if (result != USB_STOR_TRANSPORT_GOOD)
- return 0;
- US_DEBUGP("Device ID = %02Xn", deviceID);
- US_DEBUGP("Manuf ID = %02Xn", manufacturerID);
- *pagesize = 512;
- *blocksize = 16;
- switch (deviceID) {
- case 0x6e: // 1MB
- case 0xe8:
- case 0xec:
- *pagesize = 256;
- return 0x00100000;
- case 0xea: // 2MB
- case 0x5d: // 5d is a ROM card with pagesize 512.
- case 0x64:
- if (deviceID!=0x5D)
- *pagesize = 256;
- return 0x00200000;
- case 0xe3: // 4MB
- case 0xe5:
- case 0x6b:
- case 0xd5:
- return 0x00400000;
- case 0xe6: // 8MB
- case 0xd6:
- return 0x00800000;
- case 0x73: // 16MB
- *blocksize = 32;
- return 0x01000000;
- case 0x75: // 32MB
- *blocksize = 32;
- return 0x02000000;
- case 0x76: // 64MB
- *blocksize = 32;
- return 0x04000000;
- case 0x79: // 128MB
- *blocksize = 32;
- return 0x08000000;
- default: // unknown
- return 0;
- }
- }
- int sddr09_read_map(struct us_data *us) {
- struct scatterlist *sg;
- struct sddr09_card_info *info = (struct sddr09_card_info *)(us->extra);
- int numblocks;
- int i;
- unsigned char *ptr;
- unsigned short lba;
- unsigned char parity;
- unsigned char fast_parity[16] = {
- 0, 1, 1, 0, 1, 0, 0, 1,
- 1, 0, 0, 1, 0, 1, 1, 0
- };
- int result;
- int alloc_len;
- int alloc_blocks;
- if (!info->capacity)
- return -1;
- // read 64 (1<<6) bytes for every block
- // ( 1 << ( blockshift + pageshift ) bytes)
- // of capacity:
- // (1<<6)*capacity/(1<<(b+p)) =
- // ((1<<6)*capacity)>>(b+p) =
- // capacity>>(b+p-6)
- alloc_len = info->capacity >>
- (info->blockshift + info->pageshift - 6);
- // Allocate a number of scatterlist structures according to
- // the number of 128k blocks in the alloc_len. Adding 128k-1
- // and then dividing by 128k gives the correct number of blocks.
- // 128k = 1<<17
- alloc_blocks = (alloc_len + (1<<17) - 1) >> 17;
- sg = kmalloc(alloc_blocks*sizeof(struct scatterlist),
- GFP_NOIO);
- if (sg == NULL)
- return 0;
- for (i=0; i<alloc_blocks; i++) {
- if (i<alloc_blocks-1) {
- sg[i].address = kmalloc( (1<<17), GFP_NOIO );
- sg[i].page = NULL;
- sg[i].length = (1<<17);
- } else {
- sg[i].address = kmalloc(alloc_len, GFP_NOIO);
- sg[i].page = NULL;
- sg[i].length = alloc_len;
- }
- alloc_len -= sg[i].length;
- }
- for (i=0; i<alloc_blocks; i++)
- if (sg[i].address == NULL) {
- for (i=0; i<alloc_blocks; i++)
- if (sg[i].address != NULL)
- kfree(sg[i].address);
- kfree(sg);
- return 0;
- }
- numblocks = info->capacity >> (info->blockshift + info->pageshift);
- if ( (result = sddr09_read_control(us, 0, numblocks,
- (unsigned char *)sg, alloc_blocks)) !=
- USB_STOR_TRANSPORT_GOOD) {
- for (i=0; i<alloc_blocks; i++)
- kfree(sg[i].address);
- kfree(sg);
- return -1;
- }
- if (info->lba_to_pba)
- kfree(info->lba_to_pba);
- if (info->pba_to_lba)
- 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) {
- if (info->lba_to_pba != NULL)
- kfree(info->lba_to_pba);
- if (info->pba_to_lba != NULL)
- kfree(info->pba_to_lba);
- info->lba_to_pba = NULL;
- info->pba_to_lba = NULL;
- for (i=0; i<alloc_blocks; i++)
- kfree(sg[i].address);
- kfree(sg);
- return 0;
- }
- memset(info->lba_to_pba, 0, numblocks*sizeof(int));
- memset(info->pba_to_lba, 0, numblocks*sizeof(int));
- // 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++) {
- ptr = sg[i>>11].address+((i&0x7ff)<<6);
- if (ptr[0]!=0xFF || ptr[1]!=0xFF || ptr[2]!=0xFF ||
- ptr[3]!=0xFF || ptr[4]!=0xFF || ptr[5]!=0xFF) {
- US_DEBUGP("PBA %04X has no logical mapping: reserved area = "
- "%02X%02X%02X%02X data status %02X block status %02Xn",
- i, ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5]);
- continue;
- }
- if ((ptr[6]>>4)!=0x01) {
- US_DEBUGP("PBA %04X has invalid address field %02X%02X/%02X%02Xn",
- i, ptr[6], ptr[7], ptr[11], ptr[12]);
- continue;
- }
- /* ensure even parity */
- lba = short_pack(ptr[7], ptr[6]);
- parity = 1; // the parity of 0x1000
- parity ^= fast_parity[lba & 0x000F];
- parity ^= fast_parity[(lba>>4) & 0x000F];
- parity ^= fast_parity[(lba>>8) & 0x000F];
- if (parity) { /* bad parity bit */
- US_DEBUGP("Bad parity in LBA for block %04Xn", i);
- continue;
- }
- lba = (lba&0x07FF)>>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.
- */
- lba += 1000*(i/0x400);
- if (lba>=numblocks) {
- US_DEBUGP("Bad LBA %04X for block %04Xn", lba, i);
- continue;
- }
- if (lba<0x10 || (lba>=0x3E0 && lba<0x3EF))
- US_DEBUGP("LBA %04X <-> PBA %04Xn", lba, i);
- info->pba_to_lba[i] = lba;
- info->lba_to_pba[lba] = i;
- }
- for (i=0; i<alloc_blocks; i++)
- kfree(sg[i].address);
- kfree(sg);
- return 0;
- }
- /*
- static int init_sddr09(struct us_data *us) {
- int result;
- unsigned char data[14];
- unsigned char command[8] = {
- 0xc1, 0x01, 0, 0, 0, 0, 0, 0
- };
- unsigned char command2[8] = {
- 0x41, 0, 0, 0, 0, 0, 0, 0
- };
- unsigned char tur[12] = {
- 0x03, 0x20, 0, 0, 0x0e, 0, 0, 0, 0, 0, 0, 0
- };
- // What the hey is all this for? Doesn't seem to
- // affect the device, so we won't do device inits.
- if ( (result = sddr09_send_control(us, command, data, 2)) !=
- USB_STOR_TRANSPORT_GOOD)
- return result;
- US_DEBUGP("SDDR09: %02X %02Xn", data[0], data[1]);
- command[1] = 0x08;
- if ( (result = sddr09_send_control(us, command, data, 2)) !=
- USB_STOR_TRANSPORT_GOOD)
- return result;
- US_DEBUGP("SDDR09: %02X %02Xn", data[0], data[1]);
- if ( (result = sddr09_send_control(us, command2, tur, 12)) !=
- USB_STOR_TRANSPORT_GOOD) {
- US_DEBUGP("SDDR09: request sense failedn");
- return result;
- }
- if ( (result = sddr09_raw_bulk(
- us, SCSI_DATA_READ, data, 14)) !=
- USB_STOR_TRANSPORT_GOOD) {
- US_DEBUGP("SDDR09: request sense bulk in failedn");
- return result;
- }
- US_DEBUGP("SDDR09: request sense workedn");
- return result;
- }
- */
- void sddr09_card_info_destructor(void *extra) {
- struct sddr09_card_info *info = (struct sddr09_card_info *)extra;
- if (!extra)
- return;
- if (info->lba_to_pba)
- kfree(info->lba_to_pba);
- if (info->pba_to_lba)
- kfree(info->pba_to_lba);
- }
- /*
- * Transport for the Sandisk SDDR-09
- */
- int sddr09_transport(Scsi_Cmnd *srb, struct us_data *us)
- {
- int result;
- int i;
- char string[64];
- 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 sddr09_card_info *info = (struct sddr09_card_info *)(us->extra);
- if (!us->extra) {
- us->extra = kmalloc(
- sizeof(struct sddr09_card_info), GFP_NOIO);
- if (!us->extra)
- return USB_STOR_TRANSPORT_ERROR;
- memset(us->extra, 0, sizeof(struct sddr09_card_info));
- us->extra_destructor = sddr09_card_info_destructor;
- }
- ptr = (unsigned char *)srb->request_buffer;
- /* Dummy up a response for INQUIRY since SDDR09 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;
- }
- if (srb->cmnd[0] == READ_CAPACITY) {
- capacity = sddr09_get_capacity(us, &info->pagesize,
- &info->blocksize);
- if (!capacity)
- return USB_STOR_TRANSPORT_FAILED;
- info->capacity = capacity;
- for (info->pageshift=1;
- (info->pagesize>>info->pageshift);
- info->pageshift++);
- info->pageshift--;
- for (info->blockshift=1;
- (info->blocksize>>info->blockshift);
- info->blockshift++);
- info->blockshift--;
- info->blockmask = (1<<info->blockshift)-1;
- // Last page in the card
- capacity /= info->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(info->pagesize>>16);
- ptr[5] = LSB_of(info->pagesize>>16);
- ptr[6] = MSB_of(info->pagesize&0xFFFF);
- ptr[7] = LSB_of(info->pagesize&0xFFFF);
- sddr09_read_map(us);
- return USB_STOR_TRANSPORT_GOOD;
- }
- if (srb->cmnd[0] == MODE_SENSE) {
- // Read-write error recovery page: there needs to
- // be a check for write-protect here
- if ( (srb->cmnd[2] & 0x3F) == 0x01 ) {
- US_DEBUGP(
- "SDDR09: Dummy up request for mode page 1n");
- if (ptr==NULL ||
- srb->request_bufflen<sizeof(mode_page_01))
- return USB_STOR_TRANSPORT_ERROR;
- memcpy(ptr, mode_page_01, sizeof(mode_page_01));
- return USB_STOR_TRANSPORT_GOOD;
- } else if ( (srb->cmnd[2] & 0x3F) == 0x3F ) {
- US_DEBUGP(
- "SDDR09: Dummy up request for all mode pagesn");
- if (ptr==NULL ||
- srb->request_bufflen<sizeof(mode_page_01))
- return USB_STOR_TRANSPORT_ERROR;
- memcpy(ptr, mode_page_01, sizeof(mode_page_01));
- return USB_STOR_TRANSPORT_GOOD;
- }
- // FIXME: sense buffer?
- return USB_STOR_TRANSPORT_ERROR;
- }
- if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
- US_DEBUGP(
- "SDDR09: %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) {
- 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]);
- // 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->capacity >>
- (info->pageshift + info->blockshift) ) ) {
- US_DEBUGP("Error: Requested LBA %04X exceeds maximum "
- "block %04lXn", lba,
- (info->capacity >> (info->pageshift + info->blockshift))-1);
- // FIXME: sense buffer?
- return USB_STOR_TRANSPORT_ERROR;
- }
- pba = info->lba_to_pba[lba];
- // if pba is 0, either it's really 0, in which case
- // the pba-to-lba map for pba 0 will be the lba,
- // or that lba doesn't exist.
- if (pba==0 && info->pba_to_lba[0] != lba) {
- // FIXME: sense buffer?
- US_DEBUGP("Error: Requested LBA %04X has no physical block "
- "mapping.n", lba);
- return USB_STOR_TRANSPORT_ERROR;
- }
- US_DEBUGP("READ_10: read block %04X (LBA %04X) page %01X"
- " pages %dn",
- pba, lba, page, pages);
- return sddr09_read_data(us,
- ( (pba << info->blockshift) + page) << info->pageshift,
- pages, ptr, srb->use_sg);
- }
- // Pass TEST_UNIT_READY and REQUEST_SENSE through
- if (srb->cmnd[0] != TEST_UNIT_READY &&
- srb->cmnd[0] != REQUEST_SENSE)
- return USB_STOR_TRANSPORT_ERROR; // FIXME: sense buffer?
- for (; srb->cmd_len<12; srb->cmd_len++)
- srb->cmnd[srb->cmd_len] = 0;
- srb->cmnd[1] = 0x20;
- string[0] = 0;
- for (i=0; i<12; i++)
- sprintf(string+strlen(string), "%02X ", srb->cmnd[i]);
- US_DEBUGP("SDDR09: Send control for command %sn",
- string);
- if ( (result = sddr09_send_control(us,
- usb_sndctrlpipe(us->pusb_dev,0),
- 0,
- 0x41,
- 0,
- 0,
- srb->cmnd,
- 12)) != USB_STOR_TRANSPORT_GOOD)
- return result;
- US_DEBUGP("SDDR09: Control for command OKn");
- if (srb->request_bufflen == 0)
- return USB_STOR_TRANSPORT_GOOD;
- if (srb->sc_data_direction == SCSI_DATA_WRITE ||
- srb->sc_data_direction == SCSI_DATA_READ) {
- US_DEBUGP("SDDR09: %s %d bytesn",
- srb->sc_data_direction==SCSI_DATA_WRITE ?
- "sending" : "receiving",
- srb->request_bufflen);
- result = sddr09_bulk_transport(us,
- srb->sc_data_direction,
- srb->request_buffer,
- srb->request_bufflen, srb->use_sg);
- return result;
- }
- return USB_STOR_TRANSPORT_GOOD;
- }