NetBSD/sys/dev/ic/ahavar.h

124 lines
4.5 KiB
C

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