NetBSD/sys/dev/ic/bhavar.h

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/* $NetBSD: bhavar.h,v 1.21 2001/05/03 20:34:54 ross Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
1998-08-15 14:51:16 +04:00
* 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.
*/
1996-09-01 04:54:34 +04:00
#include <sys/queue.h>
/* XXX adjust hash for large numbers of CCBs */
#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))
/*
* A CCB allocation group. Each group is a page size. We can find
* the allocation group for a CCB by truncating the CCB address to
* a page boundary, and the offset from the group's DMA mapping
* by taking the offset of the CCB into the page.
*/
#define BHA_CCBS_PER_GROUP ((PAGE_SIZE - sizeof(bus_dmamap_t)) / \
sizeof(struct bha_ccb))
struct bha_ccb_group {
bus_dmamap_t bcg_dmamap;
struct bha_ccb bcg_ccbs[1]; /* determined at run-time */
};
#define BHA_CCB_GROUP(ccb) \
(struct bha_ccb_group *)(trunc_page((vaddr_t)ccb))
#define BHA_CCB_OFFSET(ccb) ((vaddr_t)(ccb) & PAGE_MASK)
#define BHA_CCB_SYNC(sc, ccb, ops) \
do { \
struct bha_ccb_group *bcg = BHA_CCB_GROUP((ccb)); \
\
bus_dmamap_sync((sc)->sc_dmat, bcg->bcg_dmamap, \
BHA_CCB_OFFSET(ccb), sizeof(struct bha_ccb), (ops)); \
} while (0)
/*
* Offset in the DMA mapping for mailboxes.
* Since all mailboxes are allocated on a single DMA'able memory
* due to the hardware limitation, an offset of any mailboxes can be
* calculated using same expression.
*/
#define BHA_MBX_OFFSET(sc, mbx) ((u_long)(mbx) - (u_long)(sc)->sc_mbo)
#define BHA_MBI_SYNC(sc, mbi, ops) \
do { \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \
BHA_MBX_OFFSET((sc), (mbi)), sizeof(struct bha_mbx_in), (ops)); \
} while (0)
#define BHA_MBO_SYNC(sc, mbo, ops) \
do { \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \
BHA_MBX_OFFSET((sc), (mbo)), sizeof(struct bha_mbx_out), (ops)); \
} while (0)
struct bha_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_mbox; /* maps the mailboxes */
int sc_dmaflags; /* bus-specific dma map flags */
void *sc_ih;
int sc_scsi_id; /* host adapter SCSI ID */
int sc_flags;
#define BHAF_WIDE 0x01 /* device is wide */
#define BHAF_DIFFERENTIAL 0x02 /* device is differential */
#define BHAF_ULTRA 0x04 /* device is ultra-scsi */
#define BHAF_TAGGED_QUEUEING 0x08 /* device supports tagged queueing */
#define BHAF_WIDE_LUN 0x10 /* device supported wide lun CCBs */
#define BHAF_STRICT_ROUND_ROBIN 0x20 /* device supports strict RR mode */
int sc_max_dmaseg; /* maximum number of DMA segments */
int sc_max_ccbs; /* maximum number of CCBs (HW) */
int sc_cur_ccbs; /* current number of CCBs */
int sc_disc_mask; /* mask of targets allowing discnnct */
int sc_ultra_mask; /* mask of targets allowing ultra */
int sc_fast_mask; /* mask of targets allowing fast */
int sc_sync_mask; /* mask of targets allowing sync */
int sc_wide_mask; /* mask of targets allowing wide */
int sc_tag_mask; /* mask of targets allowing t/q'ing */
/*
* In and Out mailboxes.
*/
struct bha_mbx_out *sc_mbo;
struct bha_mbx_in *sc_mbi;
struct bha_mbx_out *sc_cmbo; /* Collection Mail Box out */
struct bha_mbx_out *sc_tmbo; /* Target Mail Box out */
int sc_mbox_count; /* number of mailboxes */
int sc_mbofull; /* number of full Mail Box Out */
struct bha_mbx_in *sc_tmbi; /* Target Mail Box in */
struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE];
TAILQ_HEAD(, bha_ccb) sc_free_ccb,
sc_waiting_ccb,
sc_allocating_ccbs;
struct scsipi_adapter sc_adapter;
struct scsipi_channel sc_channel;
char sc_model[7],
sc_firmware[6];
};
struct bha_probe_data {
int sc_irq, sc_drq;
};
int bha_find __P((bus_space_tag_t, bus_space_handle_t));
int bha_inquire_config __P((bus_space_tag_t, bus_space_handle_t,
struct bha_probe_data *));
void bha_attach __P((struct bha_softc *));
int bha_info __P((struct bha_softc *));
int bha_intr __P((void *));
int bha_disable_isacompat __P((struct bha_softc *));
int bha_probe_inquiry __P((bus_space_tag_t, bus_space_handle_t,
struct bha_probe_data *));