NetBSD/sys/dev/ic/bhavar.h

80 lines
3.1 KiB
C

/* $NetBSD: bhavar.h,v 1.2 1996/09/01 00:54:38 mycroft Exp $ */
/*
* Copyright (c) 1994, 1996 Charles M. Hannum. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
/*
* Mail box defs etc.
* these could be bigger but we need the bha_softc to fit on a single page..
*/
#define BHA_MBX_SIZE 32 /* mail box size (MAX 255 MBxs) */
/* don't need that many really */
#define BHA_CCB_MAX 32 /* store up to 32 CCBs at one time */
#define CCB_HASH_SIZE 32 /* hash table size for phystokv */
#define CCB_HASH_SHIFT 9
#define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
#define bha_nextmbx(wmb, mbx, mbio) \
if ((wmb) == &(mbx)->mbio[BHA_MBX_SIZE - 1]) \
(wmb) = &(mbx)->mbio[0]; \
else \
(wmb)++;
struct bha_mbx {
struct bha_mbx_out mbo[BHA_MBX_SIZE];
struct bha_mbx_in mbi[BHA_MBX_SIZE];
struct bha_mbx_out *cmbo; /* Collection Mail Box out */
struct bha_mbx_out *tmbo; /* Target Mail Box out */
struct bha_mbx_in *tmbi; /* Target Mail Box in */
};
struct bha_softc {
struct device sc_dev;
bus_chipset_tag_t sc_bc;
bus_io_handle_t sc_ioh;
int sc_irq, sc_drq;
void *sc_ih;
char sc_model[7],
sc_firmware[6];
struct bha_mbx sc_mbx; /* all our mailboxes */
#define wmbx (&sc->sc_mbx)
struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE];
TAILQ_HEAD(, bha_ccb) sc_free_ccb, sc_waiting_ccb;
int sc_numccbs, sc_mbofull;
int sc_scsi_dev; /* adapters scsi id */
struct scsi_link sc_link; /* prototype for devs */
};
int bha_find __P((bus_chipset_tag_t, bus_io_handle_t, struct bha_softc *));
void bha_attach __P((struct bha_softc *));
int bha_intr __P((void *));