sys/dev/misc/cmx/cmxvar.h

root/sys/dev/misc/cmx/cmxvar.h
/*-
 * Copyright (c) 2006-2007 Daniel Roethlisberger <daniel@roe.ch>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/dev/cmx/cmxvar.h,v 1.1 2008/03/06 08:09:45 rink Exp $
 * $DragonFly: src/sys/dev/misc/cmx/cmxvar.h,v 1.1 2008/04/23 08:57:10 hasso Exp $
 */

/*#define       CMX_DEBUG*/
/*#define       CMX_INTR*/

#define CMX_MIN_RDLEN   10              /* min read length */
#define CMX_MIN_WRLEN   5               /* min write length */
#define CMX_BUFSZ       512             /* I/O block size */

struct cmx_softc {
        device_t dev;                   /* pccard device */
        struct cdev *cdev;              /* character device */

        struct resource *ioport;        /* io port resource descriptor */
        int ioport_rid;                 /* io port resource identification */

        bus_space_tag_t bst;            /* bus space tag */
        bus_space_handle_t bsh;         /* bus space handle */

#ifdef CMX_INTR
        struct resource* irq;           /* irq resource descriptor */
        int irq_rid;                    /* irq resource identification */
        void *ih;                       /* intr handle */
#endif

        struct lock mtx;                /* per-unit lock */
        struct callout ch;              /* callout handle */
        struct kqinfo kq;               /* select/poll/kq queue handle */

        int open;                       /* is chardev open? */
        int polling;                    /* are we polling? */
        int dying;                      /* are we detaching? */

        unsigned long timeout;          /* response timeout */

        uint8_t buf[CMX_BUFSZ];         /* read/write buffer */
};

extern devclass_t cmx_devclass;

void    cmx_init_softc(device_t);
int     cmx_alloc_resources(device_t);
void    cmx_release_resources(device_t);
int     cmx_attach(device_t);
int     cmx_detach(device_t);

#define CMX_READ_1(sc, off)                                             \
        (bus_space_read_1((sc)->bst, (sc)->bsh, off))
#define CMX_WRITE_1(sc, off, val)                                       \
        (bus_space_write_1((sc)->bst, (sc)->bsh, off, val))

#define cmx_read_BSR(sc)                                                \
        CMX_READ_1(sc, REG_OFFSET_BSR)
#define cmx_write_BSR(sc, val)                                          \
        CMX_WRITE_1(sc, REG_OFFSET_BSR, val)
#define cmx_read_SCR(sc)                                                \
        CMX_READ_1(sc, REG_OFFSET_SCR)
#define cmx_write_SCR(sc, val)                                          \
        CMX_WRITE_1(sc, REG_OFFSET_SCR, val)
#define cmx_read_DTR(sc)                                                \
        CMX_READ_1(sc, REG_OFFSET_DTR)
#define cmx_write_DTR(sc, val)                                          \
        CMX_WRITE_1(sc, REG_OFFSET_DTR, val)

#define cmx_test(byte, flags, test)                                     \
        (((byte) & (flags)) == ((test) ? (flags) : 0))

#define cmx_test_BSR(sc, flags, test)                                   \
        cmx_test(cmx_read_BSR(sc), flags, test)

#define CMX_LOCK(sc)                    lockmgr(&(sc)->mtx, LK_EXCLUSIVE);
#define CMX_UNLOCK(sc)                  lockmgr(&(sc)->mtx, LK_RELEASE);
#define CMX_LOCK_ASSERT(sc, what)
DragonflyBSD
