134 lines
4.5 KiB
C
134 lines
4.5 KiB
C
/* $NetBSD: cacvar.h,v 1.11 2005/02/27 00:27:01 perry 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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#ifndef _IC_CACVAR_H_
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#define _IC_CACVAR_H_
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#define CAC_MAX_CCBS 20
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#define CAC_MAX_XFER (0xffff * 512)
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#define CAC_SG_SIZE 32
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#define cac_inb(sc, port) \
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bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, port)
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#define cac_inw(sc, port) \
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bus_space_read_2((sc)->sc_iot, (sc)->sc_ioh, port)
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#define cac_inl(sc, port) \
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bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, port)
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#define cac_outb(sc, port, val) \
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bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, port, val)
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#define cac_outw(sc, port, val) \
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bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, port, val)
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#define cac_outl(sc, port, val) \
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bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, port, val)
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/*
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* Stupid macros to deal with alignment/endianness issues.
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*/
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#define CAC_GET1(x) \
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(((u_char *)&(x))[0])
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#define CAC_GET2(x) \
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(((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8))
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#define CAC_GET4(x) \
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((((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8)) | \
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(((u_char *)&(x))[0] << 16 | (((u_char *)&(x))[1] << 24)))
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struct cac_softc;
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struct cac_ccb;
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struct cac_context {
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void (*cc_handler)(struct device *, void *, int);
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struct device *cc_dv;
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void *cc_context;
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};
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struct cac_ccb {
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/* Data the controller will touch - 276 bytes */
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struct cac_hdr ccb_hdr;
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struct cac_req ccb_req;
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struct cac_sgb ccb_seg[CAC_SG_SIZE];
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/* Data the controller won't touch */
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int ccb_flags;
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int ccb_datasize;
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paddr_t ccb_paddr;
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bus_dmamap_t ccb_dmamap_xfer;
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SIMPLEQ_ENTRY(cac_ccb) ccb_chain;
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struct cac_context ccb_context;
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};
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#define CAC_CCB_DATA_IN 0x0001 /* Map describes inbound xfer */
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#define CAC_CCB_DATA_OUT 0x0002 /* Map describes outbound xfer */
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#define CAC_CCB_ACTIVE 0x0004 /* Command submitted to controller */
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struct cac_linkage {
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struct cac_ccb *(*cl_completed)(struct cac_softc *);
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int (*cl_fifo_full)(struct cac_softc *);
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void (*cl_intr_enable)(struct cac_softc *, int);
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int (*cl_intr_pending)(struct cac_softc *);
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void (*cl_submit)(struct cac_softc *, struct cac_ccb *);
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};
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struct cac_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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int sc_nunits;
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void *sc_ih;
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caddr_t sc_ccbs;
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paddr_t sc_ccbs_paddr;
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SIMPLEQ_HEAD(, cac_ccb) sc_ccb_free;
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SIMPLEQ_HEAD(, cac_ccb) sc_ccb_queue;
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struct cac_linkage sc_cl;
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};
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struct cac_attach_args {
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int caca_unit;
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};
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int cac_cmd(struct cac_softc *, int, void *, int, int, int, int,
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struct cac_context *);
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int cac_init(struct cac_softc *, const char *, int);
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int cac_intr(void *);
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extern const struct cac_linkage cac_l0;
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#endif /* !_IC_CACVAR_H_ */
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