124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
/* $NetBSD: ahavar.h,v 1.8 1998/08/15 10:51:17 mycroft Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center.
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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 by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
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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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#include <sys/queue.h>
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/*
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* Mail box defs etc.
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* these could be bigger but we need the aha_softc to fit on a single page..
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*/
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#define AHA_MBX_SIZE 16 /* mail box size (MAX 255 MBxs) */
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/* don't need that many really */
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#define AHA_CCB_MAX 16 /* store up to 16 CCBs at one time */
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#define CCB_HASH_SIZE 16 /* hash table size for phystokv */
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#define CCB_HASH_SHIFT 9
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#define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
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#define aha_nextmbx(wmb, mbx, mbio) \
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if ((wmb) == &(mbx)->mbio[AHA_MBX_SIZE - 1]) \
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(wmb) = &(mbx)->mbio[0]; \
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else \
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(wmb)++;
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struct aha_mbx {
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struct aha_mbx_out mbo[AHA_MBX_SIZE];
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struct aha_mbx_in mbi[AHA_MBX_SIZE];
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struct aha_mbx_out *cmbo; /* Collection Mail Box out */
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struct aha_mbx_out *tmbo; /* Target Mail Box out */
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struct aha_mbx_in *tmbi; /* Target Mail Box in */
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};
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struct aha_control {
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struct aha_mbx ac_mbx; /* all our mailboxes */
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struct aha_ccb ac_ccbs[AHA_CCB_MAX]; /* all our control blocks */
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};
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struct aha_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_dma_tag_t sc_dmat;
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bus_dmamap_t sc_dmamap_control; /* maps the control structures */
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void *sc_ih;
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struct aha_control *sc_control; /* control structures */
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#define wmbx (&sc->sc_control->ac_mbx)
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struct aha_ccb *sc_ccbhash[CCB_HASH_SIZE];
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TAILQ_HEAD(, aha_ccb) sc_free_ccb, sc_waiting_ccb;
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int sc_mbofull;
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struct scsipi_link sc_link; /* prototype for devs */
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LIST_HEAD(, scsipi_xfer) sc_queue;
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struct scsipi_xfer *sc_queuelast;
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char sc_model[18],
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sc_firmware[4];
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};
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/*
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* Offset of a Mail Box In from the beginning of the control DMA mapping.
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*/
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#define AHA_MBI_OFF(m) (offsetof(struct aha_control, ac_mbx.mbi[0]) + \
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(((u_long)(m)) - ((u_long)&wmbx->mbi[0])))
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/*
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* Offset of a Mail Box Out from the beginning of the control DMA mapping.
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*/
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#define AHA_MBO_OFF(m) (offsetof(struct aha_control, ac_mbx.mbo[0]) + \
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(((u_long)(m)) - ((u_long)&wmbx->mbo[0])))
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/*
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* Offset of a CCB from the beginning of the control DMA mapping.
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*/
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#define AHA_CCB_OFF(c) (offsetof(struct aha_control, ac_ccbs[0]) + \
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(((u_long)(c)) - ((u_long)&sc->sc_control->ac_ccbs[0])))
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struct aha_probe_data {
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int sc_irq, sc_drq;
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int sc_scsi_dev; /* adapters scsi id */
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};
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int aha_find __P((bus_space_tag_t, bus_space_handle_t,
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struct aha_probe_data *));
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void aha_attach __P((struct aha_softc *, struct aha_probe_data *));
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int aha_intr __P((void *));
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