- 根目录:
- drivers
- staging
- rts5139
- ms_mg.c
/* Driver for Realtek RTS51xx USB card reader
*
* Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Author:
* wwang (wei_wang@realsil.com.cn)
* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
* Maintainer:
* Edwin Rong (edwin_rong@realsil.com.cn)
* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
*/
#include <linux/blkdev.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include "debug.h"
#include "trace.h"
#include "rts51x.h"
#include "rts51x_transport.h"
#include "rts51x_scsi.h"
#include "rts51x_card.h"
#include "ms.h"
#ifdef SUPPORT_MAGIC_GATE
static int mg_check_int_error(struct rts51x_chip *chip)
{
u8 value;
rts51x_read_register(chip, MS_TRANS_CFG, &value);
if (value & (INT_ERR | INT_CMDNK))
TRACE_RET(chip, STATUS_FAIL);
return STATUS_SUCCESS;
}
static int mg_send_ex_cmd(struct rts51x_chip *chip, u8 cmd, u8 entry_num)
{
int retval, i;
u8 data[8];
data[0] = cmd;
data[1] = 0;
data[2] = 0;
data[3] = 0;
data[4] = 0;
data[5] = 0;
data[6] = entry_num;
data[7] = 0;
for (i = 0; i < MS_MAX_RETRY_COUNT; i++) {
retval =
ms_write_bytes(chip, PRO_EX_SET_CMD, 7, WAIT_INT, data, 8);
if (retval == STATUS_SUCCESS)
break;
}
if (i == MS_MAX_RETRY_COUNT)
TRACE_RET(chip, STATUS_FAIL);
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, STATUS_FAIL);
return STATUS_SUCCESS;
}
int mg_set_tpc_para_sub(struct rts51x_chip *chip, int type, u8 mg_entry_num)
{
int retval;
u8 buf[6];
RTS51X_DEBUGP("--%s--\n", __func__);
if (type == 0)
retval = ms_set_rw_reg_addr(chip, 0, 0, Pro_TPCParm, 1);
else
retval = ms_set_rw_reg_addr(chip, 0, 0, Pro_DataCount1, 6);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
buf[0] = 0;
buf[1] = 0;
if (type == 1) {
buf[2] = 0;
buf[3] = 0;
buf[4] = 0;
buf[5] = mg_entry_num;
}
retval =
ms_write_bytes(chip, PRO_WRITE_REG, (type == 0) ? 1 : 6,
NO_WAIT_INT, buf, 6);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
/**
* Get MagciGate ID and set Leaf ID to medium.
* After receiving this SCSI command, adapter shall fulfill 2 tasks
* below in order:
* 1. send GET_ID TPC command to get MagicGate ID and hold it till
* Response&challenge CMD.
* 2. send SET_ID TPC command to medium with Leaf ID released by host
* in this SCSI CMD.
*/
int rts51x_mg_set_leaf_id(struct scsi_cmnd *srb, struct rts51x_chip *chip)
{
int retval;
int i;
unsigned int lun = SCSI_LUN(srb);
u8 buf1[32], buf2[12];
RTS51X_DEBUGP("--%s--\n", __func__);
if (scsi_bufflen(srb) < 12) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MEDIA_INVALID_CMD_FIELD);
TRACE_RET(chip, STATUS_FAIL);
}
rts51x_ms_cleanup_work(chip);
retval = ms_switch_clock(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = mg_send_ex_cmd(chip, MG_SET_LID, 0);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_ESTAB);
TRACE_RET(chip, retval);
}
memset(buf1, 0, 32);
rts51x_get_xfer_buf(buf2, min(12, (int)scsi_bufflen(srb)), srb);
for (i = 0; i < 8; i++)
buf1[8 + i] = buf2[4 + i];
retval =
ms_write_bytes(chip, PRO_WRITE_SHORT_DATA, 32, WAIT_INT, buf1, 32);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_ESTAB);
TRACE_RET(chip, retval);
}
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_ESTAB);
TRACE_RET(chip, retval);
}
return STATUS_SUCCESS;
}
/**
* Send Local EKB to host.
* After receiving this SCSI command, adapter shall read the divided
* data(1536 bytes totally) from medium by using READ_LONG_DATA TPC
* for 3 times, and report data to host with data-length is 1052 bytes.
*/
int rts51x_mg_get_local_EKB(struct scsi_cmnd *srb, struct rts51x_chip *chip)
{
int retval = STATUS_FAIL;
int bufflen;
unsigned int lun = SCSI_LUN(srb);
u8 *buf = NULL;
RTS51X_DEBUGP("--%s--\n", __func__);
rts51x_ms_cleanup_work(chip);
retval = ms_switch_clock(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
buf = kmalloc(1540, GFP_KERNEL);
if (!buf)
TRACE_RET(chip, STATUS_NOMEM);
buf[0] = 0x04;
buf[1] = 0x1A;
buf[2] = 0x00;
buf[3] = 0x00;
retval = mg_send_ex_cmd(chip, MG_GET_LEKB, 0);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_GOTO(chip, GetEKBFinish);
}
retval = ms_transfer_data(chip, MS_TM_AUTO_READ, PRO_READ_LONG_DATA,
3, WAIT_INT, 0, 0, buf + 4, 1536);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
rts51x_write_register(chip, CARD_STOP, MS_STOP | MS_CLR_ERR,
MS_STOP | MS_CLR_ERR);
TRACE_GOTO(chip, GetEKBFinish);
}
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_GOTO(chip, GetEKBFinish);
}
bufflen = min(1052, (int)scsi_bufflen(srb));
rts51x_set_xfer_buf(buf, bufflen, srb);
GetEKBFinish:
kfree(buf);
return retval;
}
/**
* Send challenge(host) to medium.
* After receiving this SCSI command, adapter shall sequentially issues
* TPC commands to the medium for writing 8-bytes data as challenge
* by host within a short data packet.
*/
int rts51x_mg_chg(struct scsi_cmnd *srb, struct rts51x_chip *chip)
{
struct ms_info *ms_card = &(chip->ms_card);
int retval;
int bufflen;
int i;
unsigned int lun = SCSI_LUN(srb);
u8 buf[32], tmp;
RTS51X_DEBUGP("--%s--\n", __func__);
rts51x_ms_cleanup_work(chip);
retval = ms_switch_clock(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = mg_send_ex_cmd(chip, MG_GET_ID, 0);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_INCOMPATIBLE_MEDIUM);
TRACE_RET(chip, retval);
}
retval =
ms_read_bytes(chip, PRO_READ_SHORT_DATA, 32, WAIT_INT, buf, 32);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_INCOMPATIBLE_MEDIUM);
TRACE_RET(chip, retval);
}
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_INCOMPATIBLE_MEDIUM);
TRACE_RET(chip, retval);
}
memcpy(ms_card->magic_gate_id, buf, 16);
for (i = 0; i < 2500; i++) {
RTS51X_READ_REG(chip, MS_TRANS_CFG, &tmp);
if (tmp &
(MS_INT_CED | MS_INT_CMDNK | MS_INT_BREQ | MS_INT_ERR))
break;
wait_timeout(1);
}
if (i == 2500) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_INCOMPATIBLE_MEDIUM);
TRACE_RET(chip, STATUS_FAIL);
}
retval = mg_send_ex_cmd(chip, MG_SET_RD, 0);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_INCOMPATIBLE_MEDIUM);
TRACE_RET(chip, retval);
}
bufflen = min(12, (int)scsi_bufflen(srb));
rts51x_get_xfer_buf(buf, bufflen, srb);
for (i = 0; i < 8; i++)
buf[i] = buf[4 + i];
for (i = 0; i < 24; i++)
buf[8 + i] = 0;
retval =
ms_write_bytes(chip, PRO_WRITE_SHORT_DATA, 32, WAIT_INT, buf, 32);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_INCOMPATIBLE_MEDIUM);
TRACE_RET(chip, retval);
}
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_INCOMPATIBLE_MEDIUM);
TRACE_RET(chip, retval);
}
ms_card->mg_auth = 0;
return STATUS_SUCCESS;
}
/**
* Send Response and Challenge data to host.
* After receiving this SCSI command, adapter shall communicates with
* the medium, get parameters(HRd, Rms, MagicGateID) by using READ_SHORT_DATA
* TPC and send the data to host according to certain format required by
* MG-R specification.
* The paremeter MagicGateID is the one that adapter has obtained from
* the medium by TPC commands in Set Leaf ID command phase previously.
*/
int rts51x_mg_get_rsp_chg(struct scsi_cmnd *srb, struct rts51x_chip *chip)
{
struct ms_info *ms_card = &(chip->ms_card);
int retval, i;
int bufflen;
unsigned int lun = SCSI_LUN(srb);
u8 buf1[32], buf2[36], tmp;
RTS51X_DEBUGP("--%s--\n", __func__);
rts51x_ms_cleanup_work(chip);
retval = ms_switch_clock(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = mg_send_ex_cmd(chip, MG_MAKE_RMS, 0);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_RET(chip, retval);
}
retval =
ms_read_bytes(chip, PRO_READ_SHORT_DATA, 32, WAIT_INT, buf1, 32);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_RET(chip, retval);
}
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_RET(chip, retval);
}
buf2[0] = 0x00;
buf2[1] = 0x22;
buf2[2] = 0x00;
buf2[3] = 0x00;
memcpy(buf2 + 4, ms_card->magic_gate_id, 16);
memcpy(buf2 + 20, buf1, 16);
bufflen = min(36, (int)scsi_bufflen(srb));
rts51x_set_xfer_buf(buf2, bufflen, srb);
for (i = 0; i < 2500; i++) {
RTS51X_READ_REG(chip, MS_TRANS_CFG, &tmp);
if (tmp & (MS_INT_CED | MS_INT_CMDNK |
MS_INT_BREQ | MS_INT_ERR))
break;
wait_timeout(1);
}
if (i == 2500) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_RET(chip, STATUS_FAIL);
}
return STATUS_SUCCESS;
}
/**
* Send response(host) to medium.
* After receiving this SCSI command, adapter shall sequentially
* issues TPC commands to the medium for writing 8-bytes data as
* challenge by host within a short data packet.
*/
int rts51x_mg_rsp(struct scsi_cmnd *srb, struct rts51x_chip *chip)
{
struct ms_info *ms_card = &(chip->ms_card);
int retval;
int i;
int bufflen;
unsigned int lun = SCSI_LUN(srb);
u8 buf[32];
RTS51X_DEBUGP("--%s--\n", __func__);
rts51x_ms_cleanup_work(chip);
retval = ms_switch_clock(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = mg_send_ex_cmd(chip, MG_MAKE_KSE, 0);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_RET(chip, retval);
}
bufflen = min(12, (int)scsi_bufflen(srb));
rts51x_get_xfer_buf(buf, bufflen, srb);
for (i = 0; i < 8; i++)
buf[i] = buf[4 + i];
for (i = 0; i < 24; i++)
buf[8 + i] = 0;
retval =
ms_write_bytes(chip, PRO_WRITE_SHORT_DATA, 32, WAIT_INT, buf, 32);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_RET(chip, retval);
}
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
TRACE_RET(chip, retval);
}
ms_card->mg_auth = 1;
return STATUS_SUCCESS;
}
/** * Send ICV data to host.
* After receiving this SCSI command, adapter shall read the divided
* data(1024 bytes totally) from medium by using READ_LONG_DATA TPC
* for 2 times, and report data to host with data-length is 1028 bytes.
*
* Since the extra 4 bytes data is just only a prefix to original data
* that read from medium, so that the 4-byte data pushed into Ring buffer
* precedes data transmission from medium to Ring buffer by DMA mechanism
* in order to get maximum performance and minimum code size simultaneously.
*/
int rts51x_mg_get_ICV(struct scsi_cmnd *srb, struct rts51x_chip *chip)
{
struct ms_info *ms_card = &(chip->ms_card);
int retval;
int bufflen;
unsigned int lun = SCSI_LUN(srb);
u8 *buf = NULL;
RTS51X_DEBUGP("--%s--\n", __func__);
rts51x_ms_cleanup_work(chip);
retval = ms_switch_clock(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
buf = kmalloc(1028, GFP_KERNEL);
if (!buf)
TRACE_RET(chip, STATUS_NOMEM);
buf[0] = 0x04;
buf[1] = 0x02;
buf[2] = 0x00;
buf[3] = 0x00;
retval = mg_send_ex_cmd(chip, MG_GET_IBD, ms_card->mg_entry_num);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MEDIA_UNRECOVER_READ_ERR);
TRACE_GOTO(chip, GetICVFinish);
}
retval = ms_transfer_data(chip, MS_TM_AUTO_READ, PRO_READ_LONG_DATA,
2, WAIT_INT, 0, 0, buf + 4, 1024);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MEDIA_UNRECOVER_READ_ERR);
rts51x_write_register(chip, CARD_STOP, MS_STOP | MS_CLR_ERR,
MS_STOP | MS_CLR_ERR);
TRACE_GOTO(chip, GetICVFinish);
}
retval = mg_check_int_error(chip);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MEDIA_UNRECOVER_READ_ERR);
TRACE_GOTO(chip, GetICVFinish);
}
bufflen = min(1028, (int)scsi_bufflen(srb));
rts51x_set_xfer_buf(buf, bufflen, srb);
GetICVFinish:
kfree(buf);
return retval;
}
/**
* Send ICV data to medium.
* After receiving this SCSI command, adapter shall receive 1028 bytes
* and write the later 1024 bytes to medium by WRITE_LONG_DATA TPC
* consecutively.
*
* Since the first 4-bytes data is just only a prefix to original data
* that sent by host, and it should be skipped by shifting DMA pointer
* before writing 1024 bytes to medium.
*/
int rts51x_mg_set_ICV(struct scsi_cmnd *srb, struct rts51x_chip *chip)
{
struct ms_info *ms_card = &(chip->ms_card);
int retval;
int bufflen;
#ifdef MG_SET_ICV_SLOW
int i;
#endif
unsigned int lun = SCSI_LUN(srb);
u8 *buf = NULL;
RTS51X_DEBUGP("--%s--\n", __func__);
rts51x_ms_cleanup_work(chip);
retval = ms_switch_clock(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
buf = kmalloc(1028, GFP_KERNEL);
if (!buf)
TRACE_RET(chip, STATUS_NOMEM);
bufflen = min(1028, (int)scsi_bufflen(srb));
rts51x_get_xfer_buf(buf, bufflen, srb);
retval = mg_send_ex_cmd(chip, MG_SET_IBD, ms_card->mg_entry_num);
if (retval != STATUS_SUCCESS) {
if (ms_card->mg_auth == 0) {
if ((buf[5] & 0xC0) != 0)
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_KEY_FAIL_NOT_ESTAB);
else
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_WRITE_ERR);
} else {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_WRITE_ERR);
}
TRACE_GOTO(chip, SetICVFinish);
}
#ifdef MG_SET_ICV_SLOW
for (i = 0; i < 2; i++) {
udelay(50);
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, MS_TPC, 0xFF,
PRO_WRITE_LONG_DATA);
rts51x_add_cmd(chip, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF,
WAIT_INT);
rts51x_trans_dma_enable(DMA_TO_DEVICE, chip, 512, DMA_512);
rts51x_add_cmd(chip, WRITE_REG_CMD, MS_TRANSFER, 0xFF,
MS_TRANSFER_START | MS_TM_NORMAL_WRITE);
rts51x_add_cmd(chip, CHECK_REG_CMD, MS_TRANSFER,
MS_TRANSFER_END, MS_TRANSFER_END);
retval = rts51x_send_cmd(chip, MODE_CDOR, 100);
if (retval != STATUS_SUCCESS) {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_WRITE_ERR);
TRACE_GOTO(chip, SetICVFinish);
}
retval = rts51x_transfer_data_rcc(chip, SND_BULK_PIPE(chip),
buf + 4 + i * 512, 512, 0,
NULL, 3000, STAGE_DO);
if (retval != STATUS_SUCCESS) {
rts51x_clear_ms_error(chip);
if (ms_card->mg_auth == 0) {
if ((buf[5] & 0xC0) != 0)
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_KEY_FAIL_NOT_ESTAB);
else
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_WRITE_ERR);
} else {
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_WRITE_ERR);
}
retval = STATUS_FAIL;
TRACE_GOTO(chip, SetICVFinish);
}
retval = rts51x_get_rsp(chip, 1, 3000);
if (CHECK_MS_TRANS_FAIL(chip, retval)
|| mg_check_int_error(chip)) {
rts51x_clear_ms_error(chip);
if (ms_card->mg_auth == 0) {
if ((buf[5] & 0xC0) != 0)
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_KEY_FAIL_NOT_ESTAB);
else
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_WRITE_ERR);
} else {
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_WRITE_ERR);
}
retval = STATUS_FAIL;
TRACE_GOTO(chip, SetICVFinish);
}
}
#else
retval = ms_transfer_data(chip, MS_TM_AUTO_WRITE, PRO_WRITE_LONG_DATA,
2, WAIT_INT, 0, 0, buf + 4, 1024);
if (retval != STATUS_SUCCESS) {
rts51x_clear_ms_error(chip);
if (ms_card->mg_auth == 0) {
if ((buf[5] & 0xC0) != 0)
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_KEY_FAIL_NOT_ESTAB);
else
rts51x_set_sense_type(chip, lun,
SENSE_TYPE_MG_WRITE_ERR);
} else {
rts51x_set_sense_type(chip, lun, SENSE_TYPE_MG_WRITE_ERR);
}
TRACE_GOTO(chip, SetICVFinish);
}
#endif
SetICVFinish:
kfree(buf);
return retval;
}
#endif /* SUPPORT_MAGIC_GATE */