168 lines
6.0 KiB
C
168 lines
6.0 KiB
C
/* $NetBSD: bhavar.h,v 1.23 2005/12/11 12:21:26 christos Exp $ */
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/*-
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* Copyright (c) 1998, 1999 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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#ifndef _DEV_IC_BHAVAR_H_
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#define _DEV_IC_BHAVAR_H_
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#include <sys/queue.h>
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/* XXX adjust hash for large numbers of CCBs */
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#define CCB_HASH_SIZE 32 /* 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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/*
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* A CCB allocation group. Each group is a page size. We can find
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* the allocation group for a CCB by truncating the CCB address to
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* a page boundary, and the offset from the group's DMA mapping
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* by taking the offset of the CCB into the page.
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*/
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#define BHA_CCBS_PER_GROUP ((PAGE_SIZE - sizeof(bus_dmamap_t)) / \
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sizeof(struct bha_ccb))
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struct bha_ccb_group {
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bus_dmamap_t bcg_dmamap;
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struct bha_ccb bcg_ccbs[1]; /* determined at run-time */
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};
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#define BHA_CCB_GROUP(ccb) \
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(struct bha_ccb_group *)(trunc_page((vaddr_t)ccb))
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#define BHA_CCB_OFFSET(ccb) ((vaddr_t)(ccb) & PAGE_MASK)
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#define BHA_CCB_SYNC(sc, ccb, ops) \
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do { \
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struct bha_ccb_group *bcg = BHA_CCB_GROUP((ccb)); \
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\
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bus_dmamap_sync((sc)->sc_dmat, bcg->bcg_dmamap, \
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BHA_CCB_OFFSET(ccb), sizeof(struct bha_ccb), (ops)); \
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} while (0)
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/*
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* Offset in the DMA mapping for mailboxes.
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* Since all mailboxes are allocated on a single DMA'able memory
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* due to the hardware limitation, an offset of any mailboxes can be
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* calculated using same expression.
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*/
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#define BHA_MBX_OFFSET(sc, mbx) ((u_long)(mbx) - (u_long)(sc)->sc_mbo)
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#define BHA_MBI_SYNC(sc, mbi, ops) \
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do { \
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bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \
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BHA_MBX_OFFSET((sc), (mbi)), sizeof(struct bha_mbx_in), (ops)); \
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} while (0)
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#define BHA_MBO_SYNC(sc, mbo, ops) \
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do { \
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bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \
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BHA_MBX_OFFSET((sc), (mbo)), sizeof(struct bha_mbx_out), (ops)); \
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} while (0)
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struct bha_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_mbox; /* maps the mailboxes */
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int sc_dmaflags; /* bus-specific dma map flags */
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void *sc_ih;
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int sc_scsi_id; /* host adapter SCSI ID */
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int sc_flags;
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#define BHAF_WIDE 0x01 /* device is wide */
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#define BHAF_DIFFERENTIAL 0x02 /* device is differential */
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#define BHAF_ULTRA 0x04 /* device is ultra-scsi */
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#define BHAF_TAGGED_QUEUEING 0x08 /* device supports tagged queueing */
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#define BHAF_WIDE_LUN 0x10 /* device supported wide lun CCBs */
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#define BHAF_STRICT_ROUND_ROBIN 0x20 /* device supports strict RR mode */
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int sc_max_dmaseg; /* maximum number of DMA segments */
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int sc_max_ccbs; /* maximum number of CCBs (HW) */
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int sc_cur_ccbs; /* current number of CCBs */
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int sc_disc_mask; /* mask of targets allowing discnnct */
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int sc_ultra_mask; /* mask of targets allowing ultra */
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int sc_fast_mask; /* mask of targets allowing fast */
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int sc_sync_mask; /* mask of targets allowing sync */
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int sc_wide_mask; /* mask of targets allowing wide */
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int sc_tag_mask; /* mask of targets allowing t/q'ing */
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/*
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* In and Out mailboxes.
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*/
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struct bha_mbx_out *sc_mbo;
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struct bha_mbx_in *sc_mbi;
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struct bha_mbx_out *sc_cmbo; /* Collection Mail Box out */
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struct bha_mbx_out *sc_tmbo; /* Target Mail Box out */
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int sc_mbox_count; /* number of mailboxes */
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int sc_mbofull; /* number of full Mail Box Out */
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struct bha_mbx_in *sc_tmbi; /* Target Mail Box in */
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struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE];
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TAILQ_HEAD(, bha_ccb) sc_free_ccb,
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sc_waiting_ccb,
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sc_allocating_ccbs;
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struct scsipi_adapter sc_adapter;
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struct scsipi_channel sc_channel;
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char sc_model[7],
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sc_firmware[6];
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};
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struct bha_probe_data {
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int sc_irq, sc_drq;
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};
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int bha_find(bus_space_tag_t, bus_space_handle_t);
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int bha_inquire_config(bus_space_tag_t, bus_space_handle_t,
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struct bha_probe_data *);
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void bha_attach(struct bha_softc *);
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int bha_info(struct bha_softc *);
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int bha_intr(void *);
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int bha_disable_isacompat(struct bha_softc *);
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int bha_probe_inquiry(bus_space_tag_t, bus_space_handle_t,
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struct bha_probe_data *);
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#endif /* _DEV_IC_BHAVAR_H_ */
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