195 lines
6.3 KiB
C
195 lines
6.3 KiB
C
/* Driver for Realtek RTS51xx USB card reader
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* Header file
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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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* Maintainer:
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* Edwin Rong (edwin_rong@realsil.com.cn)
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* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
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*/
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#ifndef __RTS51X_H
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#define __RTS51X_H
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#include <linux/usb.h>
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#include <linux/usb_usual.h>
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#include <linux/blkdev.h>
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#include <linux/completion.h>
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#include <linux/mutex.h>
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#include <linux/cdrom.h>
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#include <linux/kernel.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 <scsi/scsi_devinfo.h>
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#include <scsi/scsi_eh.h>
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#include <scsi/scsi_host.h>
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#define DRIVER_VERSION "v1.04"
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#define RTS51X_DESC "Realtek RTS5139/29 USB card reader driver"
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#define RTS51X_NAME "rts5139"
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#define RTS51X_CTL_THREAD "rts5139-control"
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#define RTS51X_POLLING_THREAD "rts5139-polling"
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#define POLLING_IN_THREAD
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#define SUPPORT_FILE_OP
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#define wait_timeout_x(task_state, msecs) \
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do { \
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set_current_state((task_state)); \
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schedule_timeout((msecs) * HZ / 1000); \
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} while (0)
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#define wait_timeout(msecs) wait_timeout_x(TASK_INTERRUPTIBLE, (msecs))
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#define SCSI_LUN(srb) ((srb)->device->lun)
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/* Size of the DMA-mapped I/O buffer */
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#define RTS51X_IOBUF_SIZE 1024
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/* Dynamic bitflag definitions (dflags): used in set_bit() etc. */
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#define FLIDX_URB_ACTIVE 0 /* current_urb is in use */
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#define FLIDX_SG_ACTIVE 1 /* current_sg is in use */
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#define FLIDX_ABORTING 2 /* abort is in progress */
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#define FLIDX_DISCONNECTING 3 /* disconnect in progress */
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#define FLIDX_RESETTING 4 /* device reset in progress */
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#define FLIDX_TIMED_OUT 5 /* SCSI midlayer timed out */
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struct rts51x_chip;
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struct rts51x_usb {
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/* The device we're working with
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* It's important to note:
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* (o) you must hold dev_mutex to change pusb_dev
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*/
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struct mutex dev_mutex; /* protect pusb_dev */
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struct usb_device *pusb_dev; /* this usb_device */
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struct usb_interface *pusb_intf; /* this interface */
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unsigned long dflags; /* dynamic atomic bitflags */
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unsigned int send_bulk_pipe; /* cached pipe values */
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unsigned int recv_bulk_pipe;
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unsigned int send_ctrl_pipe;
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unsigned int recv_ctrl_pipe;
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unsigned int recv_intr_pipe;
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u8 ifnum; /* interface number */
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u8 ep_bInterval; /* interrupt interval */
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/* control and bulk communications data */
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struct urb *current_urb; /* USB requests */
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struct urb *intr_urb; /* Interrupt USB request */
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struct usb_ctrlrequest *cr; /* control requests */
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struct usb_sg_request current_sg; /* scatter-gather req. */
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unsigned char *iobuf; /* I/O buffer */
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dma_addr_t cr_dma; /* buffer DMA addresses */
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dma_addr_t iobuf_dma;
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struct task_struct *ctl_thread; /* the control thread */
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struct task_struct *polling_thread; /* the polling thread */
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/* mutual exclusion and synchronization structures */
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struct completion cmnd_ready; /* to sleep thread on */
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struct completion control_exit; /* control thread exit */
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struct completion polling_exit; /* polling thread exit */
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struct completion notify; /* thread begin/end */
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};
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extern struct usb_driver rts51x_driver;
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static inline void get_current_time(u8 *timeval_buf, int buf_len)
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{
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struct timeval tv;
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if (!timeval_buf || (buf_len < 8))
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return;
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do_gettimeofday(&tv);
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timeval_buf[0] = (u8) (tv.tv_sec >> 24);
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timeval_buf[1] = (u8) (tv.tv_sec >> 16);
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timeval_buf[2] = (u8) (tv.tv_sec >> 8);
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timeval_buf[3] = (u8) (tv.tv_sec);
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timeval_buf[4] = (u8) (tv.tv_usec >> 24);
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timeval_buf[5] = (u8) (tv.tv_usec >> 16);
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timeval_buf[6] = (u8) (tv.tv_usec >> 8);
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timeval_buf[7] = (u8) (tv.tv_usec);
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}
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#define SND_CTRL_PIPE(chip) ((chip)->usb->send_ctrl_pipe)
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#define RCV_CTRL_PIPE(chip) ((chip)->usb->recv_ctrl_pipe)
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#define SND_BULK_PIPE(chip) ((chip)->usb->send_bulk_pipe)
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#define RCV_BULK_PIPE(chip) ((chip)->usb->recv_bulk_pipe)
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#define RCV_INTR_PIPE(chip) ((chip)->usb->recv_intr_pipe)
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/* The scsi_lock() and scsi_unlock() macros protect the sm_state and the
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* single queue element srb for write access */
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#define scsi_unlock(host) spin_unlock_irq(host->host_lock)
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#define scsi_lock(host) spin_lock_irq(host->host_lock)
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#define GET_PM_USAGE_CNT(chip) \
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atomic_read(&((chip)->usb->pusb_intf->pm_usage_cnt))
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#define SET_PM_USAGE_CNT(chip, cnt) \
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atomic_set(&((chip)->usb->pusb_intf->pm_usage_cnt), (cnt))
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/* Compatible macros while we switch over */
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static inline void *usb_buffer_alloc(struct usb_device *dev, size_t size,
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gfp_t mem_flags, dma_addr_t *dma)
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{
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return usb_alloc_coherent(dev, size, mem_flags, dma);
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}
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static inline void usb_buffer_free(struct usb_device *dev, size_t size,
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void *addr, dma_addr_t dma)
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{
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return usb_free_coherent(dev, size, addr, dma);
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}
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/* Convert between us_data and the corresponding Scsi_Host */
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static inline struct Scsi_Host *rts51x_to_host(struct rts51x_chip *chip)
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{
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return container_of((void *)chip, struct Scsi_Host, hostdata);
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}
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static inline struct rts51x_chip *host_to_rts51x(struct Scsi_Host *host)
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{
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return (struct rts51x_chip *)(host->hostdata);
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}
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/* struct scsi_cmnd transfer buffer access utilities */
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enum xfer_buf_dir { TO_XFER_BUF, FROM_XFER_BUF };
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/* General routines provided by the usb-storage standard core */
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#ifdef CONFIG_PM
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void rts51x_try_to_exit_ss(struct rts51x_chip *chip);
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int rts51x_suspend(struct usb_interface *iface, pm_message_t message);
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int rts51x_resume(struct usb_interface *iface);
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int rts51x_reset_resume(struct usb_interface *iface);
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#else
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#define rts51x_suspend NULL
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#define rts51x_resume NULL
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#define rts51x_reset_resume NULL
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#endif
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extern struct scsi_host_template rts51x_host_template;
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#endif /* __RTS51X_H */
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