153 lines
5.5 KiB
C
153 lines
5.5 KiB
C
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/* $NetBSD: twevar.h,v 1.1 2000/10/19 14:11:31 ad Exp $ */
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/*-
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* Copyright (c) 2000 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 Andrew Doran.
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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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/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from FreeBSD: twevar.h,v 1.1 2000/05/24 23:35:23 msmith Exp
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*/
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#ifndef _PCI_TWEVAR_H_
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#define _PCI_TWEVAR_H_
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#include "locators.h"
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#ifndef TWE_MAX_QUEUECNT
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#define TWE_MAX_QUEUECNT 128 /* Maximum per-adapter queue count */
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#endif
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#ifndef TWE_MAX_PI_QUEUECNT
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#define TWE_MAX_PI_QUEUECNT 32 /* Maximum per-initiator queue count */
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#endif
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#if TWE_SG_SIZE > (((MAXPHYS + NBPG - 1) / NBPG) + 1)
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#define TWE_MAX_SEGS (((MAXPHYS + NBPG - 1) / NBPG) + 1)
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#else
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#define TWE_MAX_SEGS TWE_SG_SIZE
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#endif
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/* Per-controller state. */
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struct twe_softc {
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struct device sc_dv;
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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;
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void *sc_ih;
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caddr_t sc_cmds;
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bus_addr_t sc_cmds_paddr;
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struct twe_ccb *sc_ccbs;
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SIMPLEQ_HEAD(, twe_ccb) sc_ccb_queue;
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SLIST_HEAD(, twe_ccb) sc_ccb_freelist;
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int sc_ccb_waitcnt;
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u_int sc_dsize[TWE_MAX_UNITS];
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};
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/* Optional per-command context. */
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struct twe_context {
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void (*tx_handler)(struct twe_ccb *, int);
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void *tx_context;
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struct device *tx_dv;
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};
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/* Command control block. */
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struct twe_ccb {
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union {
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SIMPLEQ_ENTRY(twe_ccb) simpleq;
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SLIST_ENTRY(twe_ccb) slist;
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} ccb_chain;
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struct twe_cmd *ccb_cmd;
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int ccb_cmdid;
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int ccb_flags;
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void *ccb_data;
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int ccb_datasize;
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vaddr_t ccb_abuf;
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bus_dmamap_t ccb_dmamap_xfer;
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struct twe_context ccb_tx;
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};
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#define TWE_CCB_DATA_IN 0x01 /* Map describes inbound xfer */
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#define TWE_CCB_DATA_OUT 0x02 /* Map describes outbound xfer */
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#define TWE_CCB_COMPLETE 0x04 /* Command completed */
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#define TWE_CCB_ACTIVE 0x08 /* Command active */
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/* Per-initiator state. */
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struct twe_initiator {
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int ti_queuecnt;
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int ti_waitcnt;
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};
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struct twe_attach_args {
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int twea_unit;
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};
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#define tweacf_unit cf_loc[TWECF_UNIT]
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int twe_ccb_alloc(struct twe_softc *, struct twe_initiator *,
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struct twe_ccb **, int);
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void twe_ccb_enqueue(struct twe_softc *sc, struct twe_ccb *ccb);
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void twe_ccb_free(struct twe_softc *sc, struct twe_initiator *,
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struct twe_ccb *);
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int twe_ccb_map(struct twe_softc *, struct twe_ccb *);
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int twe_ccb_poll(struct twe_softc *, struct twe_ccb *, int);
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int twe_ccb_submit(struct twe_softc *, struct twe_ccb *);
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void twe_ccb_unmap(struct twe_softc *, struct twe_ccb *);
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#endif /* !_PCI_TWEVAR_H_ */
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