669 lines
16 KiB
C
669 lines
16 KiB
C
/* Driver for Realtek RTS51xx USB card reader
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*
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* Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* wwang (wei_wang@realsil.com.cn)
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* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
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*/
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#include <linux/module.h>
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#include <linux/blkdev.h>
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#include <linux/kthread.h>
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#include <linux/sched.h>
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#include <linux/workqueue.h>
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#include <linux/kernel.h>
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#include <linux/version.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <linux/cdrom.h>
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#include <linux/usb.h>
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#include <linux/slab.h>
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#include <linux/usb_usual.h>
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#include "usb.h"
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#include "transport.h"
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#include "protocol.h"
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#include "debug.h"
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MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
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MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
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MODULE_LICENSE("GPL");
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MODULE_VERSION("1.03");
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static int auto_delink_en = 1;
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module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
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struct rts51x_status {
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u16 vid;
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u16 pid;
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u8 cur_lun;
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u8 card_type;
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u8 total_lun;
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u16 fw_ver;
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u8 phy_exist;
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u8 multi_flag;
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u8 multi_card;
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u8 log_exist;
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union {
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u8 detailed_type1;
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u8 detailed_type2;
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} detailed_type;
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u8 function[2];
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};
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struct rts51x_chip {
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u16 vendor_id;
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u16 product_id;
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char max_lun;
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struct rts51x_status *status;
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int status_len;
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u32 flag;
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};
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/* flag definition */
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#define FLIDX_AUTO_DELINK 0x01
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#define SCSI_LUN(srb) ((srb)->device->lun)
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/* Bit Operation */
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#define SET_BIT(data, idx) ((data) |= 1 << (idx))
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#define CLR_BIT(data, idx) ((data) &= ~(1 << (idx)))
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#define CHK_BIT(data, idx) ((data) & (1 << (idx)))
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#define SET_AUTO_DELINK(chip) ((chip)->flag |= FLIDX_AUTO_DELINK)
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#define CLR_AUTO_DELINK(chip) ((chip)->flag &= ~FLIDX_AUTO_DELINK)
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#define CHK_AUTO_DELINK(chip) ((chip)->flag & FLIDX_AUTO_DELINK)
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#define RTS51X_GET_VID(chip) ((chip)->vendor_id)
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#define RTS51X_GET_PID(chip) ((chip)->product_id)
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#define FW_VERSION(chip) ((chip)->status[0].fw_ver)
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#define STATUS_LEN(chip) ((chip)->status_len)
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/* Check card reader function */
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#define SUPPORT_DETAILED_TYPE1(chip) \
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CHK_BIT((chip)->status[0].function[0], 1)
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#define SUPPORT_OT(chip) \
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CHK_BIT((chip)->status[0].function[0], 2)
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#define SUPPORT_OC(chip) \
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CHK_BIT((chip)->status[0].function[0], 3)
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#define SUPPORT_AUTO_DELINK(chip) \
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CHK_BIT((chip)->status[0].function[0], 4)
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#define SUPPORT_SDIO(chip) \
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CHK_BIT((chip)->status[0].function[1], 0)
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#define SUPPORT_DETAILED_TYPE2(chip) \
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CHK_BIT((chip)->status[0].function[1], 1)
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#define CHECK_PID(chip, pid) (RTS51X_GET_PID(chip) == (pid))
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#define CHECK_FW_VER(chip, fw_ver) (FW_VERSION(chip) == (fw_ver))
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#define CHECK_ID(chip, pid, fw_ver) \
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(CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver)))
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static int init_realtek_cr(struct us_data *us);
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/*
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* The table of devices
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*/
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#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
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vendorName, productName, useProtocol, useTransport, \
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initFunction, flags) \
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{\
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USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
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.driver_info = (flags)|(USB_US_TYPE_STOR<<24)\
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}
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static const struct usb_device_id realtek_cr_ids[] = {
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# include "unusual_realtek.h"
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
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#undef UNUSUAL_DEV
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/*
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* The flags table
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*/
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#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
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vendor_name, product_name, use_protocol, use_transport, \
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init_function, Flags) \
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{ \
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.vendorName = vendor_name, \
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.productName = product_name, \
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.useProtocol = use_protocol, \
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.useTransport = use_transport, \
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.initFunction = init_function, \
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}
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static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
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# include "unusual_realtek.h"
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{} /* Terminating entry */
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};
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#undef UNUSUAL_DEV
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static int rts51x_bulk_transport(struct us_data *us, u8 lun,
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u8 *cmd, int cmd_len, u8 *buf, int buf_len,
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enum dma_data_direction dir, int *act_len)
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{
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struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
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struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
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int result;
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unsigned int residue;
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unsigned int cswlen;
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unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
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/* set up the command wrapper */
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bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
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bcb->DataTransferLength = cpu_to_le32(buf_len);
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bcb->Flags = (dir == DMA_FROM_DEVICE) ? 1 << 7 : 0;
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bcb->Tag = ++us->tag;
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bcb->Lun = lun;
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bcb->Length = cmd_len;
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/* copy the command payload */
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memset(bcb->CDB, 0, sizeof(bcb->CDB));
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memcpy(bcb->CDB, cmd, bcb->Length);
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/* send it to out endpoint */
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result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
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bcb, cbwlen, NULL);
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if (result != USB_STOR_XFER_GOOD)
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return USB_STOR_TRANSPORT_ERROR;
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/* DATA STAGE */
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/* send/receive data payload, if there is any */
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if (buf && buf_len) {
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unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
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us->recv_bulk_pipe : us->send_bulk_pipe;
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result = usb_stor_bulk_transfer_buf(us, pipe,
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buf, buf_len, NULL);
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if (result == USB_STOR_XFER_ERROR)
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return USB_STOR_TRANSPORT_ERROR;
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}
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/* get CSW for device status */
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result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
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bcs, US_BULK_CS_WRAP_LEN, &cswlen);
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if (result != USB_STOR_XFER_GOOD)
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return USB_STOR_TRANSPORT_ERROR;
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/* check bulk status */
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if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
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US_DEBUGP("Signature mismatch: got %08X, expecting %08X\n",
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le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
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return USB_STOR_TRANSPORT_ERROR;
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}
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residue = bcs->Residue;
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if (bcs->Tag != us->tag)
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return USB_STOR_TRANSPORT_ERROR;
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/* try to compute the actual residue, based on how much data
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* was really transferred and what the device tells us */
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if (residue)
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residue = residue < buf_len ? residue : buf_len;
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if (act_len)
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*act_len = buf_len - residue;
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/* based on the status code, we report good or bad */
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switch (bcs->Status) {
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case US_BULK_STAT_OK:
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/* command good -- note that data could be short */
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return USB_STOR_TRANSPORT_GOOD;
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case US_BULK_STAT_FAIL:
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/* command failed */
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return USB_STOR_TRANSPORT_FAILED;
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case US_BULK_STAT_PHASE:
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/* phase error -- note that a transport reset will be
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* invoked by the invoke_transport() function
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*/
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return USB_STOR_TRANSPORT_ERROR;
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}
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/* we should never get here, but if we do, we're in trouble */
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return USB_STOR_TRANSPORT_ERROR;
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}
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/* Determine what the maximum LUN supported is */
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static int rts51x_get_max_lun(struct us_data *us)
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{
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int result;
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/* issue the command */
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us->iobuf[0] = 0;
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result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
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US_BULK_GET_MAX_LUN,
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USB_DIR_IN | USB_TYPE_CLASS |
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USB_RECIP_INTERFACE,
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0, us->ifnum, us->iobuf, 1, 10 * HZ);
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US_DEBUGP("GetMaxLUN command result is %d, data is %d\n",
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result, us->iobuf[0]);
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/* if we have a successful request, return the result */
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if (result > 0)
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return us->iobuf[0];
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return 0;
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}
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static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
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{
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int retval;
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u8 cmnd[12] = { 0 };
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US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
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cmnd[0] = 0xF0;
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cmnd[1] = 0x0D;
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cmnd[2] = (u8) (addr >> 8);
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cmnd[3] = (u8) addr;
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cmnd[4] = (u8) (len >> 8);
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cmnd[5] = (u8) len;
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retval = rts51x_bulk_transport(us, 0, cmnd, 12,
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data, len, DMA_FROM_DEVICE, NULL);
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if (retval != USB_STOR_TRANSPORT_GOOD)
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return -EIO;
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return 0;
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}
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static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
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{
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int retval;
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u8 cmnd[12] = { 0 };
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US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
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cmnd[0] = 0xF0;
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cmnd[1] = 0x0E;
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cmnd[2] = (u8) (addr >> 8);
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cmnd[3] = (u8) addr;
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cmnd[4] = (u8) (len >> 8);
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cmnd[5] = (u8) len;
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retval = rts51x_bulk_transport(us, 0, cmnd, 12,
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data, len, DMA_TO_DEVICE, NULL);
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if (retval != USB_STOR_TRANSPORT_GOOD)
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return -EIO;
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return 0;
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}
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static int rts51x_read_status(struct us_data *us,
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u8 lun, u8 *status, int len, int *actlen)
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{
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int retval;
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u8 cmnd[12] = { 0 };
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US_DEBUGP("%s, lun = %d\n", __func__, lun);
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cmnd[0] = 0xF0;
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cmnd[1] = 0x09;
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retval = rts51x_bulk_transport(us, lun, cmnd, 12,
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status, len, DMA_FROM_DEVICE, actlen);
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if (retval != USB_STOR_TRANSPORT_GOOD)
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return -EIO;
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return 0;
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}
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static int rts51x_check_status(struct us_data *us, u8 lun)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
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int retval;
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u8 buf[16];
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retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
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if (retval < 0)
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return -EIO;
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US_DEBUGP("chip->status_len = %d\n", chip->status_len);
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chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
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chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
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chip->status[lun].cur_lun = buf[4];
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chip->status[lun].card_type = buf[5];
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chip->status[lun].total_lun = buf[6];
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chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
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chip->status[lun].phy_exist = buf[9];
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chip->status[lun].multi_flag = buf[10];
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chip->status[lun].multi_card = buf[11];
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chip->status[lun].log_exist = buf[12];
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if (chip->status_len == 16) {
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chip->status[lun].detailed_type.detailed_type1 = buf[13];
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chip->status[lun].function[0] = buf[14];
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chip->status[lun].function[1] = buf[15];
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}
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return 0;
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}
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static int enable_oscillator(struct us_data *us)
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{
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int retval;
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u8 value;
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retval = rts51x_read_mem(us, 0xFE77, &value, 1);
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if (retval < 0)
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return -EIO;
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value |= 0x04;
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retval = rts51x_write_mem(us, 0xFE77, &value, 1);
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if (retval < 0)
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return -EIO;
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retval = rts51x_read_mem(us, 0xFE77, &value, 1);
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if (retval < 0)
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return -EIO;
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if (!(value & 0x04))
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return -EIO;
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return 0;
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}
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static int do_config_autodelink(struct us_data *us, int enable, int force)
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{
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int retval;
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u8 value;
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retval = rts51x_read_mem(us, 0xFE47, &value, 1);
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if (retval < 0)
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return -EIO;
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if (enable) {
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if (force)
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value |= 0x03;
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else
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value |= 0x01;
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} else {
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value &= ~0x03;
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}
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US_DEBUGP("In %s,set 0xfe47 to 0x%x\n", __func__, value);
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retval = rts51x_write_mem(us, 0xFE47, &value, 1);
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if (retval < 0)
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return -EIO;
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return 0;
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}
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static int config_autodelink_after_power_on(struct us_data *us)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
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int retval;
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u8 value;
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if (!CHK_AUTO_DELINK(chip))
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return 0;
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retval = rts51x_read_mem(us, 0xFE47, &value, 1);
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if (retval < 0)
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return -EIO;
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if (auto_delink_en) {
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CLR_BIT(value, 0);
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CLR_BIT(value, 1);
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SET_BIT(value, 2);
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if (CHECK_ID(chip, 0x0138, 0x3882))
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CLR_BIT(value, 2);
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SET_BIT(value, 7);
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retval = rts51x_write_mem(us, 0xFE47, &value, 1);
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if (retval < 0)
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return -EIO;
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retval = enable_oscillator(us);
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if (retval == 0)
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(void)do_config_autodelink(us, 1, 0);
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} else {
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/* Autodelink controlled by firmware */
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SET_BIT(value, 2);
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if (CHECK_ID(chip, 0x0138, 0x3882))
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CLR_BIT(value, 2);
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if (CHECK_ID(chip, 0x0159, 0x5889) ||
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CHECK_ID(chip, 0x0138, 0x3880)) {
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CLR_BIT(value, 0);
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CLR_BIT(value, 7);
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}
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retval = rts51x_write_mem(us, 0xFE47, &value, 1);
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if (retval < 0)
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return -EIO;
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if (CHECK_ID(chip, 0x0159, 0x5888)) {
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value = 0xFF;
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retval = rts51x_write_mem(us, 0xFE79, &value, 1);
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if (retval < 0)
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return -EIO;
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value = 0x01;
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retval = rts51x_write_mem(us, 0x48, &value, 1);
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if (retval < 0)
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return -EIO;
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}
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}
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return 0;
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}
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|
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static int config_autodelink_before_power_down(struct us_data *us)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
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int retval;
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u8 value;
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|
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if (!CHK_AUTO_DELINK(chip))
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return 0;
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if (auto_delink_en) {
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retval = rts51x_read_mem(us, 0xFE77, &value, 1);
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if (retval < 0)
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|
return -EIO;
|
|
|
|
SET_BIT(value, 2);
|
|
retval = rts51x_write_mem(us, 0xFE77, &value, 1);
|
|
if (retval < 0)
|
|
return -EIO;
|
|
|
|
if (CHECK_ID(chip, 0x0159, 0x5888)) {
|
|
value = 0x01;
|
|
retval = rts51x_write_mem(us, 0x48, &value, 1);
|
|
if (retval < 0)
|
|
return -EIO;
|
|
}
|
|
|
|
retval = rts51x_read_mem(us, 0xFE47, &value, 1);
|
|
if (retval < 0)
|
|
return -EIO;
|
|
|
|
SET_BIT(value, 0);
|
|
if (CHECK_ID(chip, 0x0138, 0x3882))
|
|
SET_BIT(value, 2);
|
|
retval = rts51x_write_mem(us, 0xFE77, &value, 1);
|
|
if (retval < 0)
|
|
return -EIO;
|
|
} else {
|
|
if (CHECK_ID(chip, 0x0159, 0x5889) ||
|
|
CHECK_ID(chip, 0x0138, 0x3880) ||
|
|
CHECK_ID(chip, 0x0138, 0x3882)) {
|
|
retval = rts51x_read_mem(us, 0xFE47, &value, 1);
|
|
if (retval < 0)
|
|
return -EIO;
|
|
|
|
if (CHECK_ID(chip, 0x0159, 0x5889) ||
|
|
CHECK_ID(chip, 0x0138, 0x3880)) {
|
|
SET_BIT(value, 0);
|
|
SET_BIT(value, 7);
|
|
}
|
|
|
|
if (CHECK_ID(chip, 0x0138, 0x3882))
|
|
SET_BIT(value, 2);
|
|
|
|
retval = rts51x_write_mem(us, 0xFE47, &value, 1);
|
|
if (retval < 0)
|
|
return -EIO;
|
|
}
|
|
|
|
if (CHECK_ID(chip, 0x0159, 0x5888)) {
|
|
value = 0x01;
|
|
retval = rts51x_write_mem(us, 0x48, &value, 1);
|
|
if (retval < 0)
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void realtek_cr_destructor(void *extra)
|
|
{
|
|
struct rts51x_chip *chip = (struct rts51x_chip *)extra;
|
|
|
|
if (!chip)
|
|
return;
|
|
|
|
kfree(chip->status);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static void realtek_pm_hook(struct us_data *us, int pm_state)
|
|
{
|
|
if (pm_state == US_SUSPEND)
|
|
(void)config_autodelink_before_power_down(us);
|
|
}
|
|
#endif
|
|
|
|
static int init_realtek_cr(struct us_data *us)
|
|
{
|
|
struct rts51x_chip *chip;
|
|
int size, i, retval;
|
|
|
|
chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL);
|
|
if (!chip)
|
|
return -ENOMEM;
|
|
|
|
us->extra = chip;
|
|
us->extra_destructor = realtek_cr_destructor;
|
|
#ifdef CONFIG_PM
|
|
us->suspend_resume_hook = realtek_pm_hook;
|
|
#endif
|
|
|
|
us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
|
|
|
|
US_DEBUGP("chip->max_lun = %d\n", chip->max_lun);
|
|
|
|
size = (chip->max_lun + 1) * sizeof(struct rts51x_status);
|
|
chip->status = kzalloc(size, GFP_KERNEL);
|
|
if (!chip->status)
|
|
goto INIT_FAIL;
|
|
|
|
for (i = 0; i <= (int)(chip->max_lun); i++) {
|
|
retval = rts51x_check_status(us, (u8) i);
|
|
if (retval < 0)
|
|
goto INIT_FAIL;
|
|
}
|
|
|
|
if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
|
|
CHECK_FW_VER(chip, 0x5901))
|
|
SET_AUTO_DELINK(chip);
|
|
if (STATUS_LEN(chip) == 16) {
|
|
if (SUPPORT_AUTO_DELINK(chip))
|
|
SET_AUTO_DELINK(chip);
|
|
}
|
|
|
|
US_DEBUGP("chip->flag = 0x%x\n", chip->flag);
|
|
|
|
(void)config_autodelink_after_power_on(us);
|
|
|
|
return 0;
|
|
|
|
INIT_FAIL:
|
|
if (us->extra) {
|
|
kfree(chip->status);
|
|
kfree(us->extra);
|
|
us->extra = NULL;
|
|
}
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static int realtek_cr_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct us_data *us;
|
|
int result;
|
|
|
|
US_DEBUGP("Probe Realtek Card Reader!\n");
|
|
|
|
result = usb_stor_probe1(&us, intf, id,
|
|
(id - realtek_cr_ids) +
|
|
realtek_cr_unusual_dev_list);
|
|
if (result)
|
|
return result;
|
|
|
|
result = usb_stor_probe2(us);
|
|
|
|
return result;
|
|
}
|
|
|
|
static struct usb_driver realtek_cr_driver = {
|
|
.name = "ums-realtek",
|
|
.probe = realtek_cr_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 = realtek_cr_ids,
|
|
.soft_unbind = 1,
|
|
};
|
|
|
|
static int __init realtek_cr_init(void)
|
|
{
|
|
return usb_register(&realtek_cr_driver);
|
|
}
|
|
|
|
static void __exit realtek_cr_exit(void)
|
|
{
|
|
usb_deregister(&realtek_cr_driver);
|
|
}
|
|
|
|
module_init(realtek_cr_init);
|
|
module_exit(realtek_cr_exit);
|