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- /* Driver for SanDisk SDDR-09 SmartMedia reader
- *
- * (c) 2000, 2001 Robert Baruch (autophile@starband.net)
- * (c) 2002 Andries Brouwer (aeb@cwi.nl)
- * 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.
- */
- /*
- * Known vendor commands: 12 bytes, first byte is opcode
- *
- * E7: read scatter gather
- * E8: read
- * E9: write
- * EA: erase
- * EB: reset
- * EC: read status
- * ED: read ID
- * EE: write CIS (?)
- * EF: compute checksum (?)
- */
- #include <linux/errno.h>
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <scsi/scsi.h>
- #include <scsi/scsi_cmnd.h>
- #include <scsi/scsi_device.h>
- #include "usb.h"
- #include "transport.h"
- #include "protocol.h"
- #include "debug.h"
- #include "scsiglue.h"
- #define DRV_NAME "ums-sddr09"
- MODULE_DESCRIPTION("Driver for SanDisk SDDR-09 SmartMedia reader");
- MODULE_AUTHOR("Andries Brouwer <aeb@cwi.nl>, Robert Baruch <autophile@starband.net>");
- MODULE_LICENSE("GPL");
- static int usb_stor_sddr09_dpcm_init(struct us_data *us);
- static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us);
- static int usb_stor_sddr09_init(struct us_data *us);
- /*
- * 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 sddr09_usb_ids[] = {
- # include "unusual_sddr09.h"
- { } /* Terminating entry */
- };
- MODULE_DEVICE_TABLE(usb, sddr09_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 sddr09_unusual_dev_list[] = {
- # include "unusual_sddr09.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)
- /*
- * First some stuff that does not belong here:
- * data on SmartMedia and other cards, completely
- * unrelated to this driver.
- * Similar stuff occurs in <linux/mtd/nand_ids.h>.
- */
- struct nand_flash_dev {
- int model_id;
- int chipshift; /* 1<<cs bytes total capacity */
- char pageshift; /* 1<<ps bytes in a page */
- char blockshift; /* 1<<bs pages in an erase block */
- char zoneshift; /* 1<<zs blocks in a zone */
- /* # of logical blocks is 125/128 of this */
- char pageadrlen; /* length of an address in bytes - 1 */
- };
- /*
- * NAND Flash Manufacturer ID Codes
- */
- #define NAND_MFR_AMD 0x01
- #define NAND_MFR_NATSEMI 0x8f
- #define NAND_MFR_TOSHIBA 0x98
- #define NAND_MFR_SAMSUNG 0xec
- static inline char *nand_flash_manufacturer(int manuf_id) {
- switch(manuf_id) {
- case NAND_MFR_AMD:
- return "AMD";
- case NAND_MFR_NATSEMI:
- return "NATSEMI";
- case NAND_MFR_TOSHIBA:
- return "Toshiba";
- case NAND_MFR_SAMSUNG:
- return "Samsung";
- default:
- return "unknown";
- }
- }
- /*
- * It looks like it is unnecessary to attach manufacturer to the
- * remaining data: SSFDC prescribes manufacturer-independent id codes.
- *
- * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda.
- */
- static struct nand_flash_dev nand_flash_ids[] = {
- /* NAND flash */
- { 0x6e, 20, 8, 4, 8, 2}, /* 1 MB */
- { 0xe8, 20, 8, 4, 8, 2}, /* 1 MB */
- { 0xec, 20, 8, 4, 8, 2}, /* 1 MB */
- { 0x64, 21, 8, 4, 9, 2}, /* 2 MB */
- { 0xea, 21, 8, 4, 9, 2}, /* 2 MB */
- { 0x6b, 22, 9, 4, 9, 2}, /* 4 MB */
- { 0xe3, 22, 9, 4, 9, 2}, /* 4 MB */
- { 0xe5, 22, 9, 4, 9, 2}, /* 4 MB */
- { 0xe6, 23, 9, 4, 10, 2}, /* 8 MB */
- { 0x73, 24, 9, 5, 10, 2}, /* 16 MB */
- { 0x75, 25, 9, 5, 10, 2}, /* 32 MB */
- { 0x76, 26, 9, 5, 10, 3}, /* 64 MB */
- { 0x79, 27, 9, 5, 10, 3}, /* 128 MB */
- /* MASK ROM */
- { 0x5d, 21, 9, 4, 8, 2}, /* 2 MB */
- { 0xd5, 22, 9, 4, 9, 2}, /* 4 MB */
- { 0xd6, 23, 9, 4, 10, 2}, /* 8 MB */
- { 0x57, 24, 9, 4, 11, 2}, /* 16 MB */
- { 0x58, 25, 9, 4, 12, 2}, /* 32 MB */
- { 0,}
- };
- static struct nand_flash_dev *
- nand_find_id(unsigned char id) {
- int i;
- for (i = 0; i < ARRAY_SIZE(nand_flash_ids); i++)
- if (nand_flash_ids[i].model_id == id)
- return &(nand_flash_ids[i]);
- return NULL;
- }
- /*
- * ECC computation.
- */
- static unsigned char parity[256];
- static unsigned char ecc2[256];
- static void nand_init_ecc(void) {
- int i, j, a;
- parity[0] = 0;
- for (i = 1; i < 256; i++)
- parity[i] = (parity[i&(i-1)] ^ 1);
- for (i = 0; i < 256; i++) {
- a = 0;
- for (j = 0; j < 8; j++) {
- if (i & (1<<j)) {
- if ((j & 1) == 0)
- a ^= 0x04;
- if ((j & 2) == 0)
- a ^= 0x10;
- if ((j & 4) == 0)
- a ^= 0x40;
- }
- }
- ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0));
- }
- }
- /* compute 3-byte ecc on 256 bytes */
- static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) {
- int i, j, a;
- unsigned char par = 0, bit, bits[8] = {0};
- /* collect 16 checksum bits */
- for (i = 0; i < 256; i++) {
- par ^= data[i];
- bit = parity[data[i]];
- for (j = 0; j < 8; j++)
- if ((i & (1<<j)) == 0)
- bits[j] ^= bit;
- }
- /* put 4+4+4 = 12 bits in the ecc */
- a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0];
- ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
- a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4];
- ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
- ecc[2] = ecc2[par];
- }
- static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) {
- return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]);
- }
- static void nand_store_ecc(unsigned char *data, unsigned char *ecc) {
- memcpy(data, ecc, 3);
- }
- /*
- * The actual driver starts here.
- */
- struct sddr09_card_info {
- unsigned long capacity; /* Size of card in bytes */
- int pagesize; /* Size of page in bytes */
- int pageshift; /* log2 of pagesize */
- int blocksize; /* Size of block in pages */
- int blockshift; /* log2 of blocksize */
- int blockmask; /* 2^blockshift - 1 */
- int *lba_to_pba; /* logical to physical map */
- int *pba_to_lba; /* physical to logical map */
- int lbact; /* number of available pages */
- int flags;
- #define SDDR09_WP 1 /* write protected */
- };
- /*
- * On my 16MB card, control blocks have size 64 (16 real control bytes,
- * and 48 junk bytes). In reality of course the card uses 16 control bytes,
- * so the reader makes up the remaining 48. Don't know whether these numbers
- * depend on the card. For now a constant.
- */
- #define CONTROL_SHIFT 6
- /*
- * On my Combo CF/SM reader, the SM reader has LUN 1.
- * (and things fail with LUN 0).
- * It seems LUN is irrelevant for others.
- */
- #define LUN 1
- #define LUNBITS (LUN << 5)
- /*
- * LBA and PBA are unsigned ints. Special values.
- */
- #define UNDEF 0xffffffff
- #define SPARE 0xfffffffe
- #define UNUSABLE 0xfffffffd
- static const int erase_bad_lba_entries = 0;
- /* send vendor interface command (0x41) */
- /* called for requests 0, 1, 8 */
- static int
- sddr09_send_command(struct us_data *us,
- unsigned char request,
- unsigned char direction,
- unsigned char *xfer_data,
- unsigned int xfer_len) {
- unsigned int pipe;
- unsigned char requesttype = (0x41 | direction);
- int rc;
- // Get the receive or send control pipe number
- if (direction == USB_DIR_IN)
- pipe = us->recv_ctrl_pipe;
- else
- pipe = us->send_ctrl_pipe;
- rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype,
- 0, 0, xfer_data, xfer_len);
- switch (rc) {
- case USB_STOR_XFER_GOOD: return 0;
- case USB_STOR_XFER_STALLED: return -EPIPE;
- default: return -EIO;
- }
- }
- static int
- sddr09_send_scsi_command(struct us_data *us,
- unsigned char *command,
- unsigned int command_len) {
- return sddr09_send_command(us, 0, USB_DIR_OUT, command, command_len);
- }
- #if 0
- /*
- * Test Unit Ready Command: 12 bytes.
- * byte 0: opcode: 00
- */
- static int
- sddr09_test_unit_ready(struct us_data *us) {
- unsigned char *command = us->iobuf;
- int result;
- memset(command, 0, 6);
- command[1] = LUNBITS;
- result = sddr09_send_scsi_command(us, command, 6);
- usb_stor_dbg(us, "sddr09_test_unit_ready returns %d\n", result);
- return result;
- }
- #endif
- /*
- * Request Sense Command: 12 bytes.
- * byte 0: opcode: 03
- * byte 4: data length
- */
- static int
- sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) {
- unsigned char *command = us->iobuf;
- int result;
- memset(command, 0, 12);
- command[0] = 0x03;
- command[1] = LUNBITS;
- command[4] = buflen;
- result = sddr09_send_scsi_command(us, command, 12);
- if (result)
- return result;
- result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
- sensebuf, buflen, NULL);
- return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
- }
- /*
- * Read Command: 12 bytes.
- * byte 0: opcode: E8
- * byte 1: last two bits: 00: read data, 01: read blockwise control,
- * 10: read both, 11: read pagewise control.
- * It turns out we need values 20, 21, 22, 23 here (LUN 1).
- * bytes 2-5: address (interpretation depends on byte 1, see below)
- * bytes 10-11: count (idem)
- *
- * A page has 512 data bytes and 64 control bytes (16 control and 48 junk).
- * A read data command gets data in 512-byte pages.
- * A read control command gets control in 64-byte chunks.
- * A read both command gets data+control in 576-byte chunks.
- *
- * Blocks are groups of 32 pages, and read blockwise control jumps to the
- * next block, while read pagewise control jumps to the next page after
- * reading a group of 64 control bytes.
- * [Here 512 = 1<<pageshift, 32 = 1<<blockshift, 64 is constant?]
- *
- * (1 MB and 2 MB cards are a bit different, but I have only a 16 MB card.)
- */
- static int
- sddr09_readX(struct us_data *us, int x, unsigned long fromaddress,
- int nr_of_pages, int bulklen, unsigned char *buf,
- int use_sg) {
- unsigned char *command = us->iobuf;
- int result;
- command[0] = 0xE8;
- command[1] = LUNBITS | x;
- command[2] = MSB_of(fromaddress>>16);
- command[3] = LSB_of(fromaddress>>16);
- command[4] = MSB_of(fromaddress & 0xFFFF);
- command[5] = LSB_of(fromaddress & 0xFFFF);
- command[6] = 0;
- command[7] = 0;
- command[8] = 0;
- command[9] = 0;
- command[10] = MSB_of(nr_of_pages);
- command[11] = LSB_of(nr_of_pages);
- result = sddr09_send_scsi_command(us, command, 12);
- if (result) {
- usb_stor_dbg(us, "Result for send_control in sddr09_read2%d %d\n",
- x, result);
- return result;
- }
- result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe,
- buf, bulklen, use_sg, NULL);
- if (result != USB_STOR_XFER_GOOD) {
- usb_stor_dbg(us, "Result for bulk_transfer in sddr09_read2%d %d\n",
- x, result);
- return -EIO;
- }
- return 0;
- }
- /*
- * Read Data
- *
- * fromaddress counts data shorts:
- * increasing it by 256 shifts the bytestream by 512 bytes;
- * the last 8 bits are ignored.
- *
- * nr_of_pages counts pages of size (1 << pageshift).
- */
- static int
- sddr09_read20(struct us_data *us, unsigned long fromaddress,
- int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
- int bulklen = nr_of_pages << pageshift;
- /* The last 8 bits of fromaddress are ignored. */
- return sddr09_readX(us, 0, fromaddress, nr_of_pages, bulklen,
- buf, use_sg);
- }
- /*
- * Read Blockwise Control
- *
- * fromaddress gives the starting position (as in read data;
- * the last 8 bits are ignored); increasing it by 32*256 shifts
- * the output stream by 64 bytes.
- *
- * count counts control groups of size (1 << controlshift).
- * For me, controlshift = 6. Is this constant?
- *
- * After getting one control group, jump to the next block
- * (fromaddress += 8192).
- */
- static int
- sddr09_read21(struct us_data *us, unsigned long fromaddress,
- int count, int controlshift, unsigned char *buf, int use_sg) {
- int bulklen = (count << controlshift);
- return sddr09_readX(us, 1, fromaddress, count, bulklen,
- buf, use_sg);
- }
- /*
- * Read both Data and Control
- *
- * fromaddress counts data shorts, ignoring control:
- * increasing it by 256 shifts the bytestream by 576 = 512+64 bytes;
- * the last 8 bits are ignored.
- *
- * nr_of_pages counts pages of size (1 << pageshift) + (1 << controlshift).
- */
- static int
- sddr09_read22(struct us_data *us, unsigned long fromaddress,
- int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
- int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
- usb_stor_dbg(us, "reading %d pages, %d bytes\n", nr_of_pages, bulklen);
- return sddr09_readX(us, 2, fromaddress, nr_of_pages, bulklen,
- buf, use_sg);
- }
- #if 0
- /*
- * Read Pagewise Control
- *
- * fromaddress gives the starting position (as in read data;
- * the last 8 bits are ignored); increasing it by 256 shifts
- * the output stream by 64 bytes.
- *
- * count counts control groups of size (1 << controlshift).
- * For me, controlshift = 6. Is this constant?
- *
- * After getting one control group, jump to the next page
- * (fromaddress += 256).
- */
- static int
- sddr09_read23(struct us_data *us, unsigned long fromaddress,
- int count, int controlshift, unsigned char *buf, int use_sg) {
- int bulklen = (count << controlshift);
- return sddr09_readX(us, 3, fromaddress, count, bulklen,
- buf, use_sg);
- }
- #endif
- /*
- * Erase Command: 12 bytes.
- * byte 0: opcode: EA
- * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
- *
- * Always precisely one block is erased; bytes 2-5 and 10-11 are ignored.
- * The byte address being erased is 2*Eaddress.
- * The CIS cannot be erased.
- */
- static int
- sddr09_erase(struct us_data *us, unsigned long Eaddress) {
- unsigned char *command = us->iobuf;
- int result;
- usb_stor_dbg(us, "erase address %lu\n", Eaddress);
- memset(command, 0, 12);
- command[0] = 0xEA;
- command[1] = LUNBITS;
- command[6] = MSB_of(Eaddress>>16);
- command[7] = LSB_of(Eaddress>>16);
- command[8] = MSB_of(Eaddress & 0xFFFF);
- command[9] = LSB_of(Eaddress & 0xFFFF);
- result = sddr09_send_scsi_command(us, command, 12);
- if (result)
- usb_stor_dbg(us, "Result for send_control in sddr09_erase %d\n",
- result);
- return result;
- }
- /*
- * Write CIS Command: 12 bytes.
- * byte 0: opcode: EE
- * bytes 2-5: write address in shorts
- * bytes 10-11: sector count
- *
- * This writes at the indicated address. Don't know how it differs
- * from E9. Maybe it does not erase? However, it will also write to
- * the CIS.
- *
- * When two such commands on the same page follow each other directly,
- * the second one is not done.
- */
- /*
- * Write Command: 12 bytes.
- * byte 0: opcode: E9
- * bytes 2-5: write address (big-endian, counting shorts, sector aligned).
- * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
- * bytes 10-11: sector count (big-endian, in 512-byte sectors).
- *
- * If write address equals erase address, the erase is done first,
- * otherwise the write is done first. When erase address equals zero
- * no erase is done?
- */
- static int
- sddr09_writeX(struct us_data *us,
- unsigned long Waddress, unsigned long Eaddress,
- int nr_of_pages, int bulklen, unsigned char *buf, int use_sg) {
- unsigned char *command = us->iobuf;
- int result;
- command[0] = 0xE9;
- command[1] = LUNBITS;
- command[2] = MSB_of(Waddress>>16);
- command[3] = LSB_of(Waddress>>16);
- command[4] = MSB_of(Waddress & 0xFFFF);
- command[5] = LSB_of(Waddress & 0xFFFF);
- command[6] = MSB_of(Eaddress>>16);
- command[7] = LSB_of(Eaddress>>16);
- command[8] = MSB_of(Eaddress & 0xFFFF);
- command[9] = LSB_of(Eaddress & 0xFFFF);
- command[10] = MSB_of(nr_of_pages);
- command[11] = LSB_of(nr_of_pages);
- result = sddr09_send_scsi_command(us, command, 12);
- if (result) {
- usb_stor_dbg(us, "Result for send_control in sddr09_writeX %d\n",
- result);
- return result;
- }
- result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe,
- buf, bulklen, use_sg, NULL);
- if (result != USB_STOR_XFER_GOOD) {
- usb_stor_dbg(us, "Result for bulk_transfer in sddr09_writeX %d\n",
- result);
- return -EIO;
- }
- return 0;
- }
- /* erase address, write same address */
- static int
- sddr09_write_inplace(struct us_data *us, unsigned long address,
- int nr_of_pages, int pageshift, unsigned char *buf,
- int use_sg) {
- int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
- return sddr09_writeX(us, address, address, nr_of_pages, bulklen,
- buf, use_sg);
- }
- #if 0
- /*
- * Read Scatter Gather Command: 3+4n bytes.
- * byte 0: opcode E7
- * byte 2: n
- * bytes 4i-1,4i,4i+1: page address
- * byte 4i+2: page count
- * (i=1..n)
- *
- * This reads several pages from the card to a single memory buffer.
- * The last two bits of byte 1 have the same meaning as for E8.
- */
- static int
- sddr09_read_sg_test_only(struct us_data *us) {
- unsigned char *command = us->iobuf;
- int result, bulklen, nsg, ct;
- unsigned char *buf;
- unsigned long address;
- nsg = bulklen = 0;
- command[0] = 0xE7;
- command[1] = LUNBITS;
- command[2] = 0;
- address = 040000; ct = 1;
- nsg++;
- bulklen += (ct << 9);
- command[4*nsg+2] = ct;
- command[4*nsg+1] = ((address >> 9) & 0xFF);
- command[4*nsg+0] = ((address >> 17) & 0xFF);
- command[4*nsg-1] = ((address >> 25) & 0xFF);
- address = 0340000; ct = 1;
- nsg++;
- bulklen += (ct << 9);
- command[4*nsg+2] = ct;
- command[4*nsg+1] = ((address >> 9) & 0xFF);
- command[4*nsg+0] = ((address >> 17) & 0xFF);
- command[4*nsg-1] = ((address >> 25) & 0xFF);
- address = 01000000; ct = 2;
- nsg++;
- bulklen += (ct << 9);
- command[4*nsg+2] = ct;
- command[4*nsg+1] = ((address >> 9) & 0xFF);
- command[4*nsg+0] = ((address >> 17) & 0xFF);
- command[4*nsg-1] = ((address >> 25) & 0xFF);
- command[2] = nsg;
- result = sddr09_send_scsi_command(us, command, 4*nsg+3);
- if (result) {
- usb_stor_dbg(us, "Result for send_control in sddr09_read_sg %d\n",
- result);
- return result;
- }
- buf = kmalloc(bulklen, GFP_NOIO);
- if (!buf)
- return -ENOMEM;
- result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
- buf, bulklen, NULL);
- kfree(buf);
- if (result != USB_STOR_XFER_GOOD) {
- usb_stor_dbg(us, "Result for bulk_transfer in sddr09_read_sg %d\n",
- result);
- return -EIO;
- }
- return 0;
- }
- #endif
- /*
- * Read Status Command: 12 bytes.
- * byte 0: opcode: EC
- *
- * Returns 64 bytes, all zero except for the first.
- * bit 0: 1: Error
- * bit 5: 1: Suspended
- * bit 6: 1: Ready
- * bit 7: 1: Not write-protected
- */
- static int
- sddr09_read_status(struct us_data *us, unsigned char *status) {
- unsigned char *command = us->iobuf;
- unsigned char *data = us->iobuf;
- int result;
- usb_stor_dbg(us, "Reading status...\n");
- memset(command, 0, 12);
- command[0] = 0xEC;
- command[1] = LUNBITS;
- result = sddr09_send_scsi_command(us, command, 12);
- if (result)
- return result;
- result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
- data, 64, NULL);
- *status = data[0];
- return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
- }
- static int
- sddr09_read_data(struct us_data *us,
- unsigned long address,
- unsigned int sectors) {
- struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
- unsigned char *buffer;
- unsigned int lba, maxlba, pba;
- unsigned int page, pages;
- unsigned int len, offset;
- struct scatterlist *sg;
- int result;
- // Figure out the initial LBA and page
- lba = address >> info->blockshift;
- page = (address & info->blockmask);
- maxlba = info->capacity >> (info->pageshift + info->blockshift);
- if (lba >= maxlba)
- return -EIO;
- // 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(sectors, (unsigned int) info->blocksize) * info->pagesize;
- buffer = kmalloc(len, GFP_NOIO);
- if (buffer == NULL) {
- printk(KERN_WARNING "sddr09_read_data: Out of memory\n");
- return -ENOMEM;
- }
- // This could be made much more efficient by checking for
- // contiguous LBA's. Another exercise left to the student.
- result = 0;
- offset = 0;
- sg = NULL;
- while (sectors > 0) {
- /* Find number of pages we can read in this block */
- pages = min(sectors, info->blocksize - page);
- len = pages << info->pageshift;
- /* Not overflowing capacity? */
- if (lba >= maxlba) {
- usb_stor_dbg(us, "Error: Requested lba %u exceeds maximum %u\n",
- lba, maxlba);
- result = -EIO;
- break;
- }
- /* Find where this lba lives on disk */
- pba = info->lba_to_pba[lba];
- if (pba == UNDEF) { /* this lba was never written */
- usb_stor_dbg(us, "Read %d zero pages (LBA %d) page %d\n",
- pages, lba, page);
- /* This is not really an error. It just means
- that the block has never been written.
- Instead of returning an error
- it is better to return all zero data. */
- memset(buffer, 0, len);
- } else {
- usb_stor_dbg(us, "Read %d pages, from PBA %d (LBA %d) page %d\n",
- pages, pba, lba, page);
- address = ((pba << info->blockshift) + page) <<
- info->pageshift;
- result = sddr09_read20(us, address>>1,
- pages, info->pageshift, buffer, 0);
- if (result)
- break;
- }
- // 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;
- }
- kfree(buffer);
- return result;
- }
- static unsigned int
- sddr09_find_unused_pba(struct sddr09_card_info *info, unsigned int lba) {
- static unsigned int lastpba = 1;
- int zonestart, end, i;
- zonestart = (lba/1000) << 10;
- end = info->capacity >> (info->blockshift + info->pageshift);
- end -= zonestart;
- if (end > 1024)
- end = 1024;
- for (i = lastpba+1; i < end; i++) {
- if (info->pba_to_lba[zonestart+i] == UNDEF) {
- lastpba = i;
- return zonestart+i;
- }
- }
- for (i = 0; i <= lastpba; i++) {
- if (info->pba_to_lba[zonestart+i] == UNDEF) {
- lastpba = i;
- return zonestart+i;
- }
- }
- return 0;
- }
- static int
- sddr09_write_lba(struct us_data *us, unsigned int lba,
- unsigned int page, unsigned int pages,
- unsigned char *ptr, unsigned char *blockbuffer) {
- struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
- unsigned long address;
- unsigned int pba, lbap;
- unsigned int pagelen;
- unsigned char *bptr, *cptr, *xptr;
- unsigned char ecc[3];
- int i, result, isnew;
- lbap = ((lba % 1000) << 1) | 0x1000;
- if (parity[MSB_of(lbap) ^ LSB_of(lbap)])
- lbap ^= 1;
- pba = info->lba_to_pba[lba];
- isnew = 0;
- if (pba == UNDEF) {
- pba = sddr09_find_unused_pba(info, lba);
- if (!pba) {
- printk(KERN_WARNING
- "sddr09_write_lba: Out of unused blocks\n");
- return -ENOSPC;
- }
- info->pba_to_lba[pba] = lba;
- info->lba_to_pba[lba] = pba;
- isnew = 1;
- }
- if (pba == 1) {
- /* Maybe it is impossible to write to PBA 1.
- Fake success, but don't do anything. */
- printk(KERN_WARNING "sddr09: avoid writing to pba 1\n");
- return 0;
- }
- pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
- /* read old contents */
- address = (pba << (info->pageshift + info->blockshift));
- result = sddr09_read22(us, address>>1, info->blocksize,
- info->pageshift, blockbuffer, 0);
- if (result)
- return result;
- /* check old contents and fill lba */
- for (i = 0; i < info->blocksize; i++) {
- bptr = blockbuffer + i*pagelen;
- cptr = bptr + info->pagesize;
- nand_compute_ecc(bptr, ecc);
- if (!nand_compare_ecc(cptr+13, ecc)) {
- usb_stor_dbg(us, "Warning: bad ecc in page %d- of pba %d\n",
- i, pba);
- nand_store_ecc(cptr+13, ecc);
- }
- nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
- if (!nand_compare_ecc(cptr+8, ecc)) {
- usb_stor_dbg(us, "Warning: bad ecc in page %d+ of pba %d\n",
- i, pba);
- nand_store_ecc(cptr+8, ecc);
- }
- cptr[6] = cptr[11] = MSB_of(lbap);
- cptr[7] = cptr[12] = LSB_of(lbap);
- }
- /* copy in new stuff and compute ECC */
- xptr = ptr;
- for (i = page; i < page+pages; i++) {
- bptr = blockbuffer + i*pagelen;
- cptr = bptr + info->pagesize;
- memcpy(bptr, xptr, info->pagesize);
- xptr += info->pagesize;
- nand_compute_ecc(bptr, ecc);
- nand_store_ecc(cptr+13, ecc);
- nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
- nand_store_ecc(cptr+8, ecc);
- }
- usb_stor_dbg(us, "Rewrite PBA %d (LBA %d)\n", pba, lba);
- result = sddr09_write_inplace(us, address>>1, info->blocksize,
- info->pageshift, blockbuffer, 0);
- usb_stor_dbg(us, "sddr09_write_inplace returns %d\n", result);
- #if 0
- {
- unsigned char status = 0;
- int result2 = sddr09_read_status(us, &status);
- if (result2)
- usb_stor_dbg(us, "cannot read status\n");
- else if (status != 0xc0)
- usb_stor_dbg(us, "status after write: 0x%x\n", status);
- }
- #endif
- #if 0
- {
- int result2 = sddr09_test_unit_ready(us);
- }
- #endif
- return result;
- }
- static int
- sddr09_write_data(struct us_data *us,
- unsigned long address,
- unsigned int sectors) {
- struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
- unsigned int lba, maxlba, page, pages;
- unsigned int pagelen, blocklen;
- unsigned char *blockbuffer;
- unsigned char *buffer;
- unsigned int len, offset;
- struct scatterlist *sg;
- int result;
- // Figure out the initial LBA and page
- lba = address >> info->blockshift;
- page = (address & info->blockmask);
- maxlba = info->capacity >> (info->pageshift + info->blockshift);
- if (lba >= maxlba)
- return -EIO;
- // blockbuffer is used for reading in the old data, overwriting
- // with the new data, and performing ECC calculations
- /* TODO: instead of doing kmalloc/kfree for each write,
- add a bufferpointer to the info structure */
- pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
- blocklen = (pagelen << info->blockshift);
- blockbuffer = kmalloc(blocklen, GFP_NOIO);
- if (!blockbuffer) {
- printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
- return -ENOMEM;
- }
- // Since we don't write the user data directly to the device,
- // 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(sectors, (unsigned int) info->blocksize) * info->pagesize;
- buffer = kmalloc(len, GFP_NOIO);
- if (buffer == NULL) {
- printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
- kfree(blockbuffer);
- return -ENOMEM;
- }
- result = 0;
- offset = 0;
- sg = NULL;
- while (sectors > 0) {
- // Write as many sectors as possible in this block
- pages = min(sectors, info->blocksize - page);
- len = (pages << info->pageshift);
- /* Not overflowing capacity? */
- if (lba >= maxlba) {
- usb_stor_dbg(us, "Error: Requested lba %u exceeds maximum %u\n",
- lba, maxlba);
- result = -EIO;
- break;
- }
- // Get the data from the transfer buffer
- usb_stor_access_xfer_buf(buffer, len, us->srb,
- &sg, &offset, FROM_XFER_BUF);
- result = sddr09_write_lba(us, lba, page, pages,
- buffer, blockbuffer);
- if (result)
- break;
- page = 0;
- lba++;
- sectors -= pages;
- }
- kfree(buffer);
- kfree(blockbuffer);
- return result;
- }
- static int
- sddr09_read_control(struct us_data *us,
- unsigned long address,
- unsigned int blocks,
- unsigned char *content,
- int use_sg) {
- usb_stor_dbg(us, "Read control address %lu, blocks %d\n",
- address, blocks);
- return sddr09_read21(us, address, blocks,
- CONTROL_SHIFT, content, use_sg);
- }
- /*
- * Read Device ID Command: 12 bytes.
- * byte 0: opcode: ED
- *
- * Returns 2 bytes: Manufacturer ID and Device ID.
- * On more recent cards 3 bytes: the third byte is an option code A5
- * signifying that the secret command to read an 128-bit ID is available.
- * On still more recent cards 4 bytes: the fourth byte C0 means that
- * a second read ID cmd is available.
- */
- static int
- sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) {
- unsigned char *command = us->iobuf;
- unsigned char *content = us->iobuf;
- int result, i;
- memset(command, 0, 12);
- command[0] = 0xED;
- command[1] = LUNBITS;
- result = sddr09_send_scsi_command(us, command, 12);
- if (result)
- return result;
- result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
- content, 64, NULL);
- for (i = 0; i < 4; i++)
- deviceID[i] = content[i];
- return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
- }
- static int
- sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) {
- int result;
- unsigned char status;
- result = sddr09_read_status(us, &status);
- if (result) {
- usb_stor_dbg(us, "read_status fails\n");
- return result;
- }
- usb_stor_dbg(us, "status 0x%02X", status);
- if ((status & 0x80) == 0) {
- info->flags |= SDDR09_WP; /* write protected */
- US_DEBUGPX(" WP");
- }
- if (status & 0x40)
- US_DEBUGPX(" Ready");
- if (status & LUNBITS)
- US_DEBUGPX(" Suspended");
- if (status & 0x1)
- US_DEBUGPX(" Error");
- US_DEBUGPX("\n");
- return 0;
- }
- #if 0
- /*
- * Reset Command: 12 bytes.
- * byte 0: opcode: EB
- */
- static int
- sddr09_reset(struct us_data *us) {
- unsigned char *command = us->iobuf;
- memset(command, 0, 12);
- command[0] = 0xEB;
- command[1] = LUNBITS;
- return sddr09_send_scsi_command(us, command, 12);
- }
- #endif
- static struct nand_flash_dev *
- sddr09_get_cardinfo(struct us_data *us, unsigned char flags) {
- struct nand_flash_dev *cardinfo;
- unsigned char deviceID[4];
- char blurbtxt[256];
- int result;
- usb_stor_dbg(us, "Reading capacity...\n");
- result = sddr09_read_deviceID(us, deviceID);
- if (result) {
- usb_stor_dbg(us, "Result of read_deviceID is %d\n", result);
- printk(KERN_WARNING "sddr09: could not read card info\n");
- return NULL;
- }
- sprintf(blurbtxt, "sddr09: Found Flash card, ID = %4ph", deviceID);
- /* Byte 0 is the manufacturer */
- sprintf(blurbtxt + strlen(blurbtxt),
- ": Manuf. %s",
- nand_flash_manufacturer(deviceID[0]));
- /* Byte 1 is the device type */
- cardinfo = nand_find_id(deviceID[1]);
- if (cardinfo) {
- /* MB or MiB? It is neither. A 16 MB card has
- 17301504 raw bytes, of which 16384000 are
- usable for user data. */
- sprintf(blurbtxt + strlen(blurbtxt),
- ", %d MB", 1<<(cardinfo->chipshift - 20));
- } else {
- sprintf(blurbtxt + strlen(blurbtxt),
- ", type unrecognized");
- }
- /* Byte 2 is code to signal availability of 128-bit ID */
- if (deviceID[2] == 0xa5) {
- sprintf(blurbtxt + strlen(blurbtxt),
- ", 128-bit ID");
- }
- /* Byte 3 announces the availability of another read ID command */
- if (deviceID[3] == 0xc0) {
- sprintf(blurbtxt + strlen(blurbtxt),
- ", extra cmd");
- }
- if (flags & SDDR09_WP)
- sprintf(blurbtxt + strlen(blurbtxt),
- ", WP");
- printk(KERN_WARNING "%s\n", blurbtxt);
- return cardinfo;
- }
- static int
- sddr09_read_map(struct us_data *us) {
- struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
- int numblocks, alloc_len, alloc_blocks;
- int i, j, result;
- unsigned char *buffer, *buffer_end, *ptr;
- unsigned int lba, lbact;
- if (!info->capacity)
- return -1;
- // size of a block is 1 << (blockshift + pageshift) bytes
- // divide into the total capacity to get the number of blocks
- numblocks = info->capacity >> (info->blockshift + info->pageshift);
- // read 64 bytes for every block (actually 1 << CONTROL_SHIFT)
- // but only use a 64 KB buffer
- // buffer size used must be a multiple of (1 << CONTROL_SHIFT)
- #define SDDR09_READ_MAP_BUFSZ 65536
- alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT);
- alloc_len = (alloc_blocks << CONTROL_SHIFT);
- buffer = kmalloc(alloc_len, GFP_NOIO);
- if (buffer == NULL) {
- printk(KERN_WARNING "sddr09_read_map: out of memory\n");
- result = -1;
- goto done;
- }
- buffer_end = buffer + alloc_len;
- #undef SDDR09_READ_MAP_BUFSZ
- kfree(info->lba_to_pba);
- 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) {
- printk(KERN_WARNING "sddr09_read_map: out of memory\n");
- result = -1;
- goto done;
- }
- for (i = 0; i < numblocks; i++)
- info->lba_to_pba[i] = info->pba_to_lba[i] = UNDEF;
- /*
- * Define lba-pba translation table
- */
- ptr = buffer_end;
- for (i = 0; i < numblocks; i++) {
- ptr += (1 << CONTROL_SHIFT);
- if (ptr >= buffer_end) {
- unsigned long address;
- address = i << (info->pageshift + info->blockshift);
- result = sddr09_read_control(
- us, address>>1,
- min(alloc_blocks, numblocks - i),
- buffer, 0);
- if (result) {
- result = -1;
- goto done;
- }
- ptr = buffer;
- }
- if (i == 0 || i == 1) {
- info->pba_to_lba[i] = UNUSABLE;
- continue;
- }
- /* special PBAs have control field 0^16 */
- for (j = 0; j < 16; j++)
- if (ptr[j] != 0)
- goto nonz;
- info->pba_to_lba[i] = UNUSABLE;
- printk(KERN_WARNING "sddr09: PBA %d has no logical mapping\n",
- i);
- continue;
- nonz:
- /* unwritten PBAs have control field FF^16 */
- for (j = 0; j < 16; j++)
- if (ptr[j] != 0xff)
- goto nonff;
- continue;
- nonff:
- /* normal PBAs start with six FFs */
- if (j < 6) {
- printk(KERN_WARNING
- "sddr09: PBA %d has no logical mapping: "
- "reserved area = %02X%02X%02X%02X "
- "data status %02X block status %02X\n",
- i, ptr[0], ptr[1], ptr[2], ptr[3],
- ptr[4], ptr[5]);
- info->pba_to_lba[i] = UNUSABLE;
- continue;
- }
- if ((ptr[6] >> 4) != 0x01) {
- printk(KERN_WARNING
- "sddr09: PBA %d has invalid address field "
- "%02X%02X/%02X%02X\n",
- i, ptr[6], ptr[7], ptr[11], ptr[12]);
- info->pba_to_lba[i] = UNUSABLE;
- continue;
- }
- /* check even parity */
- if (parity[ptr[6] ^ ptr[7]]) {
- printk(KERN_WARNING
- "sddr09: Bad parity in LBA for block %d"
- " (%02X %02X)\n", i, ptr[6], ptr[7]);
- info->pba_to_lba[i] = UNUSABLE;
- continue;
- }
- lba = short_pack(ptr[7], ptr[6]);
- 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. This allows for 24 bad
- * or special physical blocks per zone.
- */
- if (lba >= 1000) {
- printk(KERN_WARNING
- "sddr09: Bad low LBA %d for block %d\n",
- lba, i);
- goto possibly_erase;
- }
- lba += 1000*(i/0x400);
- if (info->lba_to_pba[lba] != UNDEF) {
- printk(KERN_WARNING
- "sddr09: LBA %d seen for PBA %d and %d\n",
- lba, info->lba_to_pba[lba], i);
- goto possibly_erase;
- }
- info->pba_to_lba[i] = lba;
- info->lba_to_pba[lba] = i;
- continue;
- possibly_erase:
- if (erase_bad_lba_entries) {
- unsigned long address;
- address = (i << (info->pageshift + info->blockshift));
- sddr09_erase(us, address>>1);
- info->pba_to_lba[i] = UNDEF;
- } else
- info->pba_to_lba[i] = UNUSABLE;
- }
- /*
- * Approximate capacity. This is not entirely correct yet,
- * since a zone with less than 1000 usable pages leads to
- * missing LBAs. Especially if it is the last zone, some
- * LBAs can be past capacity.
- */
- lbact = 0;
- for (i = 0; i < numblocks; i += 1024) {
- int ct = 0;
- for (j = 0; j < 1024 && i+j < numblocks; j++) {
- if (info->pba_to_lba[i+j] != UNUSABLE) {
- if (ct >= 1000)
- info->pba_to_lba[i+j] = SPARE;
- else
- ct++;
- }
- }
- lbact += ct;
- }
- info->lbact = lbact;
- usb_stor_dbg(us, "Found %d LBA's\n", lbact);
- result = 0;
- done:
- if (result != 0) {
- kfree(info->lba_to_pba);
- kfree(info->pba_to_lba);
- info->lba_to_pba = NULL;
- info->pba_to_lba = NULL;
- }
- kfree(buffer);
- return result;
- }
- static void
- sddr09_card_info_destructor(void *extra) {
- struct sddr09_card_info *info = (struct sddr09_card_info *)extra;
- if (!info)
- return;
- kfree(info->lba_to_pba);
- kfree(info->pba_to_lba);
- }
- static int
- sddr09_common_init(struct us_data *us) {
- int result;
- /* set the configuration -- STALL is an acceptable response here */
- if (us->pusb_dev->actconfig->desc.bConfigurationValue != 1) {
- usb_stor_dbg(us, "active config #%d != 1 ??\n",
- us->pusb_dev->actconfig->desc.bConfigurationValue);
- return -EINVAL;
- }
- result = usb_reset_configuration(us->pusb_dev);
- usb_stor_dbg(us, "Result of usb_reset_configuration is %d\n", result);
- if (result == -EPIPE) {
- usb_stor_dbg(us, "-- stall on control interface\n");
- } else if (result != 0) {
- /* it's not a stall, but another error -- time to bail */
- usb_stor_dbg(us, "-- Unknown error. Rejecting device\n");
- return -EINVAL;
- }
- us->extra = kzalloc(sizeof(struct sddr09_card_info), GFP_NOIO);
- if (!us->extra)
- return -ENOMEM;
- us->extra_destructor = sddr09_card_info_destructor;
- nand_init_ecc();
- return 0;
- }
- /*
- * This is needed at a very early stage. If this is not listed in the
- * unusual devices list but called from here then LUN 0 of the combo reader
- * is not recognized. But I do not know what precisely these calls do.
- */
- static int
- usb_stor_sddr09_dpcm_init(struct us_data *us) {
- int result;
- unsigned char *data = us->iobuf;
- result = sddr09_common_init(us);
- if (result)
- return result;
- result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2);
- if (result) {
- usb_stor_dbg(us, "send_command fails\n");
- return result;
- }
- usb_stor_dbg(us, "%02X %02X\n", data[0], data[1]);
- // get 07 02
- result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2);
- if (result) {
- usb_stor_dbg(us, "2nd send_command fails\n");
- return result;
- }
- usb_stor_dbg(us, "%02X %02X\n", data[0], data[1]);
- // get 07 00
- result = sddr09_request_sense(us, data, 18);
- if (result == 0 && data[2] != 0) {
- int j;
- for (j=0; j<18; j++)
- printk(" %02X", data[j]);
- printk("\n");
- // get 70 00 00 00 00 00 00 * 00 00 00 00 00 00
- // 70: current command
- // sense key 0, sense code 0, extd sense code 0
- // additional transfer length * = sizeof(data) - 7
- // Or: 70 00 06 00 00 00 00 0b 00 00 00 00 28 00 00 00 00 00
- // sense key 06, sense code 28: unit attention,
- // not ready to ready transition
- }
- // test unit ready
- return 0; /* not result */
- }
- /*
- * Transport for the Microtech DPCM-USB
- */
- static int dpcm_transport(struct scsi_cmnd *srb, struct us_data *us)
- {
- int ret;
- usb_stor_dbg(us, "LUN=%d\n", (u8)srb->device->lun);
- switch (srb->device->lun) {
- case 0:
- /*
- * LUN 0 corresponds to the CompactFlash card reader.
- */
- ret = usb_stor_CB_transport(srb, us);
- break;
- case 1:
- /*
- * LUN 1 corresponds to the SmartMedia card reader.
- */
- /*
- * Set the LUN to 0 (just in case).
- */
- srb->device->lun = 0;
- ret = sddr09_transport(srb, us);
- srb->device->lun = 1;
- break;
- default:
- usb_stor_dbg(us, "Invalid LUN %d\n", (u8)srb->device->lun);
- ret = USB_STOR_TRANSPORT_ERROR;
- break;
- }
- return ret;
- }
- /*
- * Transport for the Sandisk SDDR-09
- */
- static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us)
- {
- static unsigned char sensekey = 0, sensecode = 0;
- static unsigned char havefakesense = 0;
- int result, i;
- unsigned char *ptr = us->iobuf;
- unsigned long capacity;
- unsigned int page, pages;
- struct sddr09_card_info *info;
- static unsigned char inquiry_response[8] = {
- 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00
- };
- /* note: no block descriptor support */
- static unsigned char mode_page_01[19] = {
- 0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00,
- 0x01, 0x0A,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- };
- info = (struct sddr09_card_info *)us->extra;
- if (srb->cmnd[0] == REQUEST_SENSE && havefakesense) {
- /* for a faked command, we have to follow with a faked sense */
- memset(ptr, 0, 18);
- ptr[0] = 0x70;
- ptr[2] = sensekey;
- ptr[7] = 11;
- ptr[12] = sensecode;
- usb_stor_set_xfer_buf(ptr, 18, srb);
- sensekey = sensecode = havefakesense = 0;
- return USB_STOR_TRANSPORT_GOOD;
- }
- havefakesense = 1;
- /* Dummy up a response for INQUIRY since SDDR09 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;
- }
- if (srb->cmnd[0] == READ_CAPACITY) {
- struct nand_flash_dev *cardinfo;
- sddr09_get_wp(us, info); /* read WP bit */
- cardinfo = sddr09_get_cardinfo(us, info->flags);
- if (!cardinfo) {
- /* probably no media */
- init_error:
- sensekey = 0x02; /* not ready */
- sensecode = 0x3a; /* medium not present */
- return USB_STOR_TRANSPORT_FAILED;
- }
- info->capacity = (1 << cardinfo->chipshift);
- info->pageshift = cardinfo->pageshift;
- info->pagesize = (1 << info->pageshift);
- info->blockshift = cardinfo->blockshift;
- info->blocksize = (1 << info->blockshift);
- info->blockmask = info->blocksize - 1;
- // map initialization, must follow get_cardinfo()
- if (sddr09_read_map(us)) {
- /* probably out of memory */
- goto init_error;
- }
- // Report capacity
- capacity = (info->lbact << info->blockshift) - 1;
- ((__be32 *) ptr)[0] = cpu_to_be32(capacity);
- // Report page size
- ((__be32 *) ptr)[1] = cpu_to_be32(info->pagesize);
- usb_stor_set_xfer_buf(ptr, 8, srb);
- return USB_STOR_TRANSPORT_GOOD;
- }
- if (srb->cmnd[0] == MODE_SENSE_10) {
- int modepage = (srb->cmnd[2] & 0x3F);
- /* They ask for the Read/Write error recovery page,
- or for all pages. */
- /* %% We should check DBD %% */
- if (modepage == 0x01 || modepage == 0x3F) {
- usb_stor_dbg(us, "Dummy up request for mode page 0x%x\n",
- modepage);
- memcpy(ptr, mode_page_01, sizeof(mode_page_01));
- ((__be16*)ptr)[0] = cpu_to_be16(sizeof(mode_page_01) - 2);
- ptr[3] = (info->flags & SDDR09_WP) ? 0x80 : 0;
- usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb);
- return USB_STOR_TRANSPORT_GOOD;
- }
- sensekey = 0x05; /* illegal request */
- sensecode = 0x24; /* invalid field in CDB */
- return USB_STOR_TRANSPORT_FAILED;
- }
- if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)
- return USB_STOR_TRANSPORT_GOOD;
- havefakesense = 0;
- 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]);
- usb_stor_dbg(us, "READ_10: read page %d pagect %d\n",
- page, pages);
- result = sddr09_read_data(us, page, pages);
- return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
- USB_STOR_TRANSPORT_ERROR);
- }
- if (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]);
- usb_stor_dbg(us, "WRITE_10: write page %d pagect %d\n",
- page, pages);
- result = sddr09_write_data(us, page, pages);
- return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
- USB_STOR_TRANSPORT_ERROR);
- }
- /* catch-all for all other commands, except
- * pass TEST_UNIT_READY and REQUEST_SENSE through
- */
- if (srb->cmnd[0] != TEST_UNIT_READY &&
- srb->cmnd[0] != REQUEST_SENSE) {
- sensekey = 0x05; /* illegal request */
- sensecode = 0x20; /* invalid command */
- havefakesense = 1;
- return USB_STOR_TRANSPORT_FAILED;
- }
- for (; srb->cmd_len<12; srb->cmd_len++)
- srb->cmnd[srb->cmd_len] = 0;
- srb->cmnd[1] = LUNBITS;
- ptr[0] = 0;
- for (i=0; i<12; i++)
- sprintf(ptr+strlen(ptr), "%02X ", srb->cmnd[i]);
- usb_stor_dbg(us, "Send control for command %s\n", ptr);
- result = sddr09_send_scsi_command(us, srb->cmnd, 12);
- if (result) {
- usb_stor_dbg(us, "sddr09_send_scsi_command returns %d\n",
- result);
- return USB_STOR_TRANSPORT_ERROR;
- }
- if (scsi_bufflen(srb) == 0)
- return USB_STOR_TRANSPORT_GOOD;
- if (srb->sc_data_direction == DMA_TO_DEVICE ||
- srb->sc_data_direction == DMA_FROM_DEVICE) {
- unsigned int pipe = (srb->sc_data_direction == DMA_TO_DEVICE)
- ? us->send_bulk_pipe : us->recv_bulk_pipe;
- usb_stor_dbg(us, "%s %d bytes\n",
- (srb->sc_data_direction == DMA_TO_DEVICE) ?
- "sending" : "receiving",
- scsi_bufflen(srb));
- result = usb_stor_bulk_srb(us, pipe, srb);
- return (result == USB_STOR_XFER_GOOD ?
- USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
- }
- return USB_STOR_TRANSPORT_GOOD;
- }
- /*
- * Initialization routine for the sddr09 subdriver
- */
- static int
- usb_stor_sddr09_init(struct us_data *us) {
- return sddr09_common_init(us);
- }
- static struct scsi_host_template sddr09_host_template;
- static int sddr09_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 - sddr09_usb_ids) + sddr09_unusual_dev_list,
- &sddr09_host_template);
- if (result)
- return result;
- if (us->protocol == USB_PR_DPCM_USB) {
- us->transport_name = "Control/Bulk-EUSB/SDDR09";
- us->transport = dpcm_transport;
- us->transport_reset = usb_stor_CB_reset;
- us->max_lun = 1;
- } else {
- us->transport_name = "EUSB/SDDR09";
- us->transport = sddr09_transport;
- us->transport_reset = usb_stor_CB_reset;
- us->max_lun = 0;
- }
- result = usb_stor_probe2(us);
- return result;
- }
- static struct usb_driver sddr09_driver = {
- .name = DRV_NAME,
- .probe = sddr09_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 = sddr09_usb_ids,
- .soft_unbind = 1,
- .no_dynamic_id = 1,
- };
- module_usb_stor_driver(sddr09_driver, sddr09_host_template, DRV_NAME);
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