| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Greg Kroah-Hartman | 3248 | 76.75% | 4 | 13.33% |
| Alan Stern | 662 | 15.64% | 6 | 20.00% |
| Matthew Dharm | 81 | 1.91% | 4 | 13.33% |
| Joe Perches | 81 | 1.91% | 1 | 3.33% |
| Andries E. Brouwer | 67 | 1.58% | 1 | 3.33% |
| Akinobu Mita | 21 | 0.50% | 1 | 3.33% |
| Jens Axboe | 20 | 0.47% | 1 | 3.33% |
| Maciej Grela | 15 | 0.35% | 1 | 3.33% |
| Felipe Balbi | 10 | 0.24% | 2 | 6.67% |
| Kees Cook | 6 | 0.14% | 1 | 3.33% |
| Matthias Maennich | 5 | 0.12% | 1 | 3.33% |
| Huajun Li | 5 | 0.12% | 1 | 3.33% |
| Tim Schmielau | 4 | 0.09% | 1 | 3.33% |
| Gustavo A. R. Silva | 2 | 0.05% | 1 | 3.33% |
| Al Viro | 2 | 0.05% | 1 | 3.33% |
| Sebastian Andrzej Siewior | 1 | 0.02% | 1 | 3.33% |
| Oliver Neukum | 1 | 0.02% | 1 | 3.33% |
| Frank Seidel | 1 | 0.02% | 1 | 3.33% |
| Total | 4232 | 30 |
// 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);
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