100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
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/*-
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* Copyright (c) 2006-2007 Daniel Roethlisberger <daniel@roe.ch>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*#define CMX_DEBUG*/
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/*#define CMX_INTR*/
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#define CMX_MIN_RDLEN 10 /* min read length */
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#define CMX_MIN_WRLEN 5 /* min write length */
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#define CMX_BUFSZ 512 /* I/O block size */
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struct cmx_softc {
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device_t dev; /* pccard device */
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struct cdev *cdev; /* character device */
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struct resource *ioport; /* io port resource descriptor */
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int ioport_rid; /* io port resource identification */
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bus_space_tag_t bst; /* bus space tag */
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bus_space_handle_t bsh; /* bus space handle */
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#ifdef CMX_INTR
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struct resource* irq; /* irq resource descriptor */
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int irq_rid; /* irq resource identification */
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void *ih; /* intr handle */
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#endif
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struct mtx mtx; /* per-unit lock */
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struct callout ch; /* callout handle */
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struct selinfo sel; /* select/poll queue handle */
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int open; /* is chardev open? */
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int polling; /* are we polling? */
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int dying; /* are we detaching? */
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unsigned long timeout; /* response timeout */
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uint8_t buf[CMX_BUFSZ]; /* read/write buffer */
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};
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extern devclass_t cmx_devclass;
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void cmx_init_softc(device_t);
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int cmx_alloc_resources(device_t);
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void cmx_release_resources(device_t);
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int cmx_attach(device_t);
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int cmx_detach(device_t);
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#define CMX_READ_1(sc, off) \
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(bus_space_read_1((sc)->bst, (sc)->bsh, off))
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#define CMX_WRITE_1(sc, off, val) \
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(bus_space_write_1((sc)->bst, (sc)->bsh, off, val))
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#define cmx_read_BSR(sc) \
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CMX_READ_1(sc, REG_OFFSET_BSR)
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#define cmx_write_BSR(sc, val) \
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CMX_WRITE_1(sc, REG_OFFSET_BSR, val)
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#define cmx_read_SCR(sc) \
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CMX_READ_1(sc, REG_OFFSET_SCR)
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#define cmx_write_SCR(sc, val) \
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CMX_WRITE_1(sc, REG_OFFSET_SCR, val)
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#define cmx_read_DTR(sc) \
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CMX_READ_1(sc, REG_OFFSET_DTR)
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#define cmx_write_DTR(sc, val) \
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CMX_WRITE_1(sc, REG_OFFSET_DTR, val)
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#define cmx_test(byte, flags, test) \
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(((byte) & (flags)) == ((test) ? (flags) : 0))
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#define cmx_test_BSR(sc, flags, test) \
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cmx_test(cmx_read_BSR(sc), flags, test)
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#define CMX_LOCK(sc) mtx_lock(&(sc)->mtx)
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#define CMX_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
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#define CMX_LOCK_ASSERT(sc, what) mtx_assert(&(sc)->mtx, (what))
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