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rts51x.h
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/* Driver for Realtek RTS51xx USB card reader
* Header file
*
* 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
*/
#ifndef __RTS51X_H
#define __RTS51X_H
#include <linux/usb.h>
#include <linux/usb_usual.h>
#include <linux/blkdev.h>
#include <linux/completion.h>
#include <linux/mutex.h>
#include <linux/cdrom.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_devinfo.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
#define DRIVER_VERSION "v1.05"
#define RTS51X_DESC "Realtek RTS5139/29 USB card reader driver"
#define RTS51X_NAME "rts5139"
#define RTS51X_CTL_THREAD "rts5139-control"
#define RTS51X_POLLING_THREAD "rts5139-polling"
#define POLLING_IN_THREAD
#define SUPPORT_FILE_OP
#define wait_timeout_x(task_state, msecs) \
do { \
set_current_state((task_state)); \
schedule_timeout((msecs) * HZ / 1000); \
} while (0)
#define wait_timeout(msecs) wait_timeout_x(TASK_INTERRUPTIBLE, (msecs))
#define SCSI_LUN(srb) ((srb)->device->lun)
/* Size of the DMA-mapped I/O buffer */
#define RTS51X_IOBUF_SIZE 1024
/* Dynamic bitflag definitions (dflags): used in set_bit() etc. */
#define FLIDX_URB_ACTIVE 0 /* current_urb is in use */
#define FLIDX_SG_ACTIVE 1 /* current_sg is in use */
#define FLIDX_ABORTING 2 /* abort is in progress */
#define FLIDX_DISCONNECTING 3 /* disconnect in progress */
#define FLIDX_RESETTING 4 /* device reset in progress */
#define FLIDX_TIMED_OUT 5 /* SCSI midlayer timed out */
struct rts51x_chip;
struct rts51x_usb {
/* The device we're working with
* It's important to note:
* (o) you must hold dev_mutex to change pusb_dev
*/
struct mutex dev_mutex; /* protect pusb_dev */
struct usb_device *pusb_dev; /* this usb_device */
struct usb_interface *pusb_intf; /* this interface */
unsigned long dflags; /* dynamic atomic bitflags */
unsigned int send_bulk_pipe; /* cached pipe values */
unsigned int recv_bulk_pipe;
unsigned int send_ctrl_pipe;
unsigned int recv_ctrl_pipe;
unsigned int recv_intr_pipe;
u8 ifnum; /* interface number */
u8 ep_bInterval; /* interrupt interval */
/* control and bulk communications data */
struct urb *current_urb; /* USB requests */
struct urb *intr_urb; /* Interrupt USB request */
struct usb_ctrlrequest *cr; /* control requests */
struct usb_sg_request current_sg; /* scatter-gather req. */
unsigned char *iobuf; /* I/O buffer */
dma_addr_t cr_dma; /* buffer DMA addresses */
dma_addr_t iobuf_dma;
struct task_struct *ctl_thread; /* the control thread */
struct task_struct *polling_thread; /* the polling thread */
/* mutual exclusion and synchronization structures */
struct completion cmnd_ready; /* to sleep thread on */
struct completion control_exit; /* control thread exit */
struct completion polling_exit; /* polling thread exit */
struct completion notify; /* thread begin/end */
};
extern struct usb_driver rts51x_driver;
static inline void get_current_time(u8 *timeval_buf, int buf_len)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0))
struct timespec64 tv;
# else
struct timeval tv;
# endif
if (!timeval_buf || (buf_len < 8))
return;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0))
ktime_get_real_ts64(&tv);
timeval_buf[0] = (u8) (tv.tv_sec >> 24);
timeval_buf[1] = (u8) (tv.tv_sec >> 16);
timeval_buf[2] = (u8) (tv.tv_sec >> 8);
timeval_buf[3] = (u8) (tv.tv_sec);
timeval_buf[4] = (u8) (tv.tv_nsec >> 24);
timeval_buf[5] = (u8) (tv.tv_nsec >> 16);
timeval_buf[6] = (u8) (tv.tv_nsec >> 8);
timeval_buf[7] = (u8) (tv.tv_nsec);
# else
gettimeofday(&tv);
timeval_buf[0] = (u8) (tv.tv_sec >> 24);
timeval_buf[1] = (u8) (tv.tv_sec >> 16);
timeval_buf[2] = (u8) (tv.tv_sec >> 8);
timeval_buf[3] = (u8) (tv.tv_sec);
timeval_buf[4] = (u8) (tv.tv_usec >> 24);
timeval_buf[5] = (u8) (tv.tv_usec >> 16);
timeval_buf[6] = (u8) (tv.tv_usec >> 8);
timeval_buf[7] = (u8) (tv.tv_usec);
# endif
}
#define SND_CTRL_PIPE(chip) ((chip)->usb->send_ctrl_pipe)
#define RCV_CTRL_PIPE(chip) ((chip)->usb->recv_ctrl_pipe)
#define SND_BULK_PIPE(chip) ((chip)->usb->send_bulk_pipe)
#define RCV_BULK_PIPE(chip) ((chip)->usb->recv_bulk_pipe)
#define RCV_INTR_PIPE(chip) ((chip)->usb->recv_intr_pipe)
/* The scsi_lock() and scsi_unlock() macros protect the sm_state and the
* single queue element srb for write access */
#define scsi_unlock(host) spin_unlock_irq(host->host_lock)
#define scsi_lock(host) spin_lock_irq(host->host_lock)
/* see https://github.com/torvalds/linux/commit/c2b71462d294cf517a0bc6e4fd6424d7cee5596f#diff-d81b85761c12e5ebdcaca4309ff73cfe */
#define GET_DEV_POWER_USAGE_COUNT(chip) \
atomic_read(&((chip)->usb->pusb_intf->dev.power.usage_count))
#define SET_DEV_POWER_USAGE_COUNT(chip, cnt) \
atomic_set(&((chip)->usb->pusb_intf->dev.power.usage_count), (cnt))
/* Compatible macros while we switch over */
static inline void *usb_buffer_alloc(struct usb_device *dev, size_t size,
gfp_t mem_flags, dma_addr_t *dma)
{
return usb_alloc_coherent(dev, size, mem_flags, dma);
}
static inline void usb_buffer_free(struct usb_device *dev, size_t size,
void *addr, dma_addr_t dma)
{
return usb_free_coherent(dev, size, addr, dma);
}
/* Convert between us_data and the corresponding Scsi_Host */
static inline struct Scsi_Host *rts51x_to_host(struct rts51x_chip *chip)
{
return container_of((void *)chip, struct Scsi_Host, hostdata);
}
static inline struct rts51x_chip *host_to_rts51x(struct Scsi_Host *host)
{
return (struct rts51x_chip *)(host->hostdata);
}
/* struct scsi_cmnd transfer buffer access utilities */
enum xfer_buf_dir { TO_XFER_BUF, FROM_XFER_BUF };
/* General routines provided by the usb-storage standard core */
#ifdef CONFIG_PM
void rts51x_try_to_exit_ss(struct rts51x_chip *chip);
int rts51x_suspend(struct usb_interface *iface, pm_message_t message);
int rts51x_resume(struct usb_interface *iface);
int rts51x_reset_resume(struct usb_interface *iface);
#else
#define rts51x_suspend NULL
#define rts51x_resume NULL
#define rts51x_reset_resume NULL
#endif
extern struct scsi_host_template rts51x_host_template;
#endif /* __RTS51X_H */