96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/* $NetBSD: iopaauvar.h,v 1.4 2002/08/04 02:26:18 thorpej Exp $ */
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/*
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* Copyright (c) 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _XSCALE_IOPAAUVAR_H_
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#define _XSCALE_IOPAAUVAR_H_
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#include <sys/pool.h>
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#include <dev/dmover/dmovervar.h>
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#define AAU_MAX_INPUTS 8
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/*
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* Due to the way the AAU's descriptors work, the DMA segments for
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* the inputs and output must all be the same length. For now, we
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* will enforce this by requiring all I/O to be page aligned, and
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* and not let it cross a page boundary.
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*
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* We could easily shrink this to any power of two.
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*/
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#define AAU_IO_BOUNDARY 4096
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struct iopaau_softc {
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struct device sc_dev;
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struct dmover_backend sc_dmb;
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struct dmover_request *sc_running;
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bus_space_tag_t sc_st;
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bus_space_handle_t sc_sh;
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bus_dma_tag_t sc_dmat;
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void *sc_firstdesc;
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void *sc_lastdesc;
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uint32_t sc_firstdesc_pa;
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bus_dmamap_t sc_map_out;
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bus_dmamap_t sc_map_in[AAU_MAX_INPUTS];
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};
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struct iopaau_function {
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int (*af_setup)(struct iopaau_softc *, struct dmover_request *);
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struct pool_cache *af_desc_cache;
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};
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extern struct pool_cache iopaau_desc_4_cache;
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extern struct pool_cache iopaau_desc_8_cache;
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void iopaau_attach(struct iopaau_softc *);
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void iopaau_process(struct dmover_backend *);
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int iopaau_intr(void *);
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int iopaau_func_zero_setup(struct iopaau_softc *,
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struct dmover_request *);
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int iopaau_func_fill8_setup(struct iopaau_softc *,
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struct dmover_request *);
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int iopaau_func_xor_setup(struct iopaau_softc *,
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struct dmover_request *);
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void iopaau_desc_free(struct pool_cache *, void *);
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#endif /* _XSCALE_IOPAAUVAR_H_ */
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