594 lines
20 KiB
C
594 lines
20 KiB
C
/* $NetBSD: bus.h,v 1.20 1998/02/04 07:36:10 thorpej Exp $ */
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/*-
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* Copyright (c) 1997, 1998 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 Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* 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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/*
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* Copyright (c) 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef _ALPHA_BUS_H_
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#define _ALPHA_BUS_H_
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#ifndef __BUS_SPACE_COMPAT_OLDDEFS
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#define __BUS_SPACE_COMPAT_OLDDEFS
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#endif
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/*
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* Addresses (in bus space).
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*/
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typedef u_long bus_addr_t;
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typedef u_long bus_size_t;
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/*
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* Access methods for bus space.
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*/
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typedef struct alpha_bus_space *bus_space_tag_t;
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typedef u_long bus_space_handle_t;
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struct alpha_bus_space {
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/* cookie */
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void *abs_cookie;
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/* mapping/unmapping */
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int (*abs_map) __P((void *, bus_addr_t, bus_size_t,
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int, bus_space_handle_t *));
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void (*abs_unmap) __P((void *, bus_space_handle_t,
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bus_size_t));
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int (*abs_subregion) __P((void *, bus_space_handle_t,
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bus_size_t, bus_size_t, bus_space_handle_t *));
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/* allocation/deallocation */
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int (*abs_alloc) __P((void *, bus_addr_t, bus_addr_t,
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bus_size_t, bus_size_t, bus_size_t, int,
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bus_addr_t *, bus_space_handle_t *));
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void (*abs_free) __P((void *, bus_space_handle_t,
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bus_size_t));
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/* barrier */
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void (*abs_barrier) __P((void *, bus_space_handle_t,
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bus_size_t, bus_size_t, int));
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/* read (single) */
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u_int8_t (*abs_r_1) __P((void *, bus_space_handle_t,
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bus_size_t));
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u_int16_t (*abs_r_2) __P((void *, bus_space_handle_t,
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bus_size_t));
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u_int32_t (*abs_r_4) __P((void *, bus_space_handle_t,
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bus_size_t));
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u_int64_t (*abs_r_8) __P((void *, bus_space_handle_t,
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bus_size_t));
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/* read multiple */
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void (*abs_rm_1) __P((void *, bus_space_handle_t,
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bus_size_t, u_int8_t *, bus_size_t));
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void (*abs_rm_2) __P((void *, bus_space_handle_t,
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bus_size_t, u_int16_t *, bus_size_t));
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void (*abs_rm_4) __P((void *, bus_space_handle_t,
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bus_size_t, u_int32_t *, bus_size_t));
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void (*abs_rm_8) __P((void *, bus_space_handle_t,
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bus_size_t, u_int64_t *, bus_size_t));
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/* read region */
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void (*abs_rr_1) __P((void *, bus_space_handle_t,
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bus_size_t, u_int8_t *, bus_size_t));
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void (*abs_rr_2) __P((void *, bus_space_handle_t,
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bus_size_t, u_int16_t *, bus_size_t));
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void (*abs_rr_4) __P((void *, bus_space_handle_t,
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bus_size_t, u_int32_t *, bus_size_t));
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void (*abs_rr_8) __P((void *, bus_space_handle_t,
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bus_size_t, u_int64_t *, bus_size_t));
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/* write (single) */
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void (*abs_w_1) __P((void *, bus_space_handle_t,
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bus_size_t, u_int8_t));
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void (*abs_w_2) __P((void *, bus_space_handle_t,
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bus_size_t, u_int16_t));
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void (*abs_w_4) __P((void *, bus_space_handle_t,
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bus_size_t, u_int32_t));
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void (*abs_w_8) __P((void *, bus_space_handle_t,
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bus_size_t, u_int64_t));
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/* write multiple */
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void (*abs_wm_1) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int8_t *, bus_size_t));
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void (*abs_wm_2) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int16_t *, bus_size_t));
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void (*abs_wm_4) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int32_t *, bus_size_t));
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void (*abs_wm_8) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int64_t *, bus_size_t));
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/* write region */
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void (*abs_wr_1) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int8_t *, bus_size_t));
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void (*abs_wr_2) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int16_t *, bus_size_t));
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void (*abs_wr_4) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int32_t *, bus_size_t));
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void (*abs_wr_8) __P((void *, bus_space_handle_t,
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bus_size_t, const u_int64_t *, bus_size_t));
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/* set multiple */
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void (*abs_sm_1) __P((void *, bus_space_handle_t,
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bus_size_t, u_int8_t, bus_size_t));
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void (*abs_sm_2) __P((void *, bus_space_handle_t,
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bus_size_t, u_int16_t, bus_size_t));
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void (*abs_sm_4) __P((void *, bus_space_handle_t,
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bus_size_t, u_int32_t, bus_size_t));
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void (*abs_sm_8) __P((void *, bus_space_handle_t,
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bus_size_t, u_int64_t, bus_size_t));
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/* set region */
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void (*abs_sr_1) __P((void *, bus_space_handle_t,
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bus_size_t, u_int8_t, bus_size_t));
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void (*abs_sr_2) __P((void *, bus_space_handle_t,
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bus_size_t, u_int16_t, bus_size_t));
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void (*abs_sr_4) __P((void *, bus_space_handle_t,
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bus_size_t, u_int32_t, bus_size_t));
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void (*abs_sr_8) __P((void *, bus_space_handle_t,
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bus_size_t, u_int64_t, bus_size_t));
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/* copy */
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void (*abs_c_1) __P((void *, bus_space_handle_t, bus_size_t,
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bus_space_handle_t, bus_size_t, bus_size_t));
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void (*abs_c_2) __P((void *, bus_space_handle_t, bus_size_t,
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bus_space_handle_t, bus_size_t, bus_size_t));
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void (*abs_c_4) __P((void *, bus_space_handle_t, bus_size_t,
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bus_space_handle_t, bus_size_t, bus_size_t));
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void (*abs_c_8) __P((void *, bus_space_handle_t, bus_size_t,
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bus_space_handle_t, bus_size_t, bus_size_t));
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};
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/*
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* Utility macros; INTERNAL USE ONLY.
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*/
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#define __abs_c(a,b) __CONCAT(a,b)
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#define __abs_opname(op,size) __abs_c(__abs_c(__abs_c(abs_,op),_),size)
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#define __abs_rs(sz, t, h, o) \
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(*(t)->__abs_opname(r,sz))((t)->abs_cookie, h, o)
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#define __abs_ws(sz, t, h, o, v) \
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(*(t)->__abs_opname(w,sz))((t)->abs_cookie, h, o, v)
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#ifndef DEBUG
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#define __abs_nonsingle(type, sz, t, h, o, a, c) \
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(*(t)->__abs_opname(type,sz))((t)->abs_cookie, h, o, a, c)
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#else
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#define __abs_nonsingle(type, sz, t, h, o, a, c) \
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do { \
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if (((unsigned long)a & (sz - 1)) != 0) \
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panic("bus non-single %d-byte unaligned (to %p) at %s:%d", \
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sz, a, __FILE__, __LINE__); \
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(*(t)->__abs_opname(type,sz))((t)->abs_cookie, h, o, a, c); \
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} while (0)
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#endif
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#define __abs_set(type, sz, t, h, o, v, c) \
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(*(t)->__abs_opname(type,sz))((t)->abs_cookie, h, o, v, c)
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#define __abs_copy(sz, t, h1, o1, h2, o2, cnt) \
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(*(t)->__abs_opname(c,sz))((t)->abs_cookie, h1, o1, h2, o2, cnt)
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/*
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* Mapping and unmapping operations.
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*/
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#define bus_space_map(t, a, s, f, hp) \
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(*(t)->abs_map)((t)->abs_cookie, (a), (s), (f), (hp))
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#define bus_space_unmap(t, h, s) \
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(*(t)->abs_unmap)((t)->abs_cookie, (h), (s))
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#define bus_space_subregion(t, h, o, s, hp) \
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(*(t)->abs_subregion)((t)->abs_cookie, (h), (o), (s), (hp))
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#define BUS_SPACE_MAP_CACHEABLE 0x01
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#define BUS_SPACE_MAP_LINEAR 0x02
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/*
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* Allocation and deallocation operations.
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*/
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#define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \
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(*(t)->abs_alloc)((t)->abs_cookie, (rs), (re), (s), (a), (b), \
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(f), (ap), (hp))
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#define bus_space_free(t, h, s) \
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(*(t)->abs_free)((t)->abs_cookie, (h), (s))
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/*
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* Bus barrier operations.
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*/
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#define bus_space_barrier(t, h, o, l, f) \
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(*(t)->abs_barrier)((t)->abs_cookie, (h), (o), (l), (f))
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#define BUS_SPACE_BARRIER_READ 0x01
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#define BUS_SPACE_BARRIER_WRITE 0x02
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#ifdef __BUS_SPACE_COMPAT_OLDDEFS
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/* compatibility definitions; deprecated */
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#define BUS_BARRIER_READ BUS_SPACE_BARRIER_READ
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#define BUS_BARRIER_WRITE BUS_SPACE_BARRIER_WRITE
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#endif
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/*
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* Bus read (single) operations.
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*/
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#define bus_space_read_1(t, h, o) __abs_rs(1,(t),(h),(o))
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#define bus_space_read_2(t, h, o) __abs_rs(2,(t),(h),(o))
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#define bus_space_read_4(t, h, o) __abs_rs(4,(t),(h),(o))
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#define bus_space_read_8(t, h, o) __abs_rs(8,(t),(h),(o))
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/*
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* Bus read multiple operations.
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*/
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#define bus_space_read_multi_1(t, h, o, a, c) \
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__abs_nonsingle(rm,1,(t),(h),(o),(a),(c))
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#define bus_space_read_multi_2(t, h, o, a, c) \
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__abs_nonsingle(rm,2,(t),(h),(o),(a),(c))
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#define bus_space_read_multi_4(t, h, o, a, c) \
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__abs_nonsingle(rm,4,(t),(h),(o),(a),(c))
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#define bus_space_read_multi_8(t, h, o, a, c) \
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__abs_nonsingle(rm,8,(t),(h),(o),(a),(c))
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/*
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* Bus read region operations.
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*/
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#define bus_space_read_region_1(t, h, o, a, c) \
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__abs_nonsingle(rr,1,(t),(h),(o),(a),(c))
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#define bus_space_read_region_2(t, h, o, a, c) \
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__abs_nonsingle(rr,2,(t),(h),(o),(a),(c))
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#define bus_space_read_region_4(t, h, o, a, c) \
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__abs_nonsingle(rr,4,(t),(h),(o),(a),(c))
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#define bus_space_read_region_8(t, h, o, a, c) \
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__abs_nonsingle(rr,8,(t),(h),(o),(a),(c))
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/*
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* Bus write (single) operations.
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*/
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#define bus_space_write_1(t, h, o, v) __abs_ws(1,(t),(h),(o),(v))
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#define bus_space_write_2(t, h, o, v) __abs_ws(2,(t),(h),(o),(v))
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#define bus_space_write_4(t, h, o, v) __abs_ws(4,(t),(h),(o),(v))
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#define bus_space_write_8(t, h, o, v) __abs_ws(8,(t),(h),(o),(v))
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/*
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* Bus write multiple operations.
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*/
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#define bus_space_write_multi_1(t, h, o, a, c) \
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__abs_nonsingle(wm,1,(t),(h),(o),(a),(c))
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#define bus_space_write_multi_2(t, h, o, a, c) \
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__abs_nonsingle(wm,2,(t),(h),(o),(a),(c))
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#define bus_space_write_multi_4(t, h, o, a, c) \
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__abs_nonsingle(wm,4,(t),(h),(o),(a),(c))
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#define bus_space_write_multi_8(t, h, o, a, c) \
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__abs_nonsingle(wm,8,(t),(h),(o),(a),(c))
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/*
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* Bus write region operations.
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*/
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#define bus_space_write_region_1(t, h, o, a, c) \
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__abs_nonsingle(wr,1,(t),(h),(o),(a),(c))
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#define bus_space_write_region_2(t, h, o, a, c) \
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__abs_nonsingle(wr,2,(t),(h),(o),(a),(c))
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#define bus_space_write_region_4(t, h, o, a, c) \
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__abs_nonsingle(wr,4,(t),(h),(o),(a),(c))
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#define bus_space_write_region_8(t, h, o, a, c) \
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__abs_nonsingle(wr,8,(t),(h),(o),(a),(c))
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/*
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* Set multiple operations.
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*/
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#define bus_space_set_multi_1(t, h, o, v, c) \
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__abs_set(sm,1,(t),(h),(o),(v),(c))
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#define bus_space_set_multi_2(t, h, o, v, c) \
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__abs_set(sm,2,(t),(h),(o),(v),(c))
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#define bus_space_set_multi_4(t, h, o, v, c) \
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__abs_set(sm,4,(t),(h),(o),(v),(c))
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#define bus_space_set_multi_8(t, h, o, v, c) \
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__abs_set(sm,8,(t),(h),(o),(v),(c))
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/*
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* Set region operations.
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*/
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#define bus_space_set_region_1(t, h, o, v, c) \
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__abs_set(sr,1,(t),(h),(o),(v),(c))
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#define bus_space_set_region_2(t, h, o, v, c) \
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__abs_set(sr,2,(t),(h),(o),(v),(c))
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#define bus_space_set_region_4(t, h, o, v, c) \
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__abs_set(sr,4,(t),(h),(o),(v),(c))
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#define bus_space_set_region_8(t, h, o, v, c) \
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__abs_set(sr,8,(t),(h),(o),(v),(c))
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/*
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* Copy region operations.
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*/
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#define bus_space_copy_region_1(t, h1, o1, h2, o2, c) \
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__abs_copy(1, (t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_region_2(t, h1, o1, h2, o2, c) \
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__abs_copy(2, (t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_region_4(t, h1, o1, h2, o2, c) \
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__abs_copy(4, (t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_region_8(t, h1, o1, h2, o2, c) \
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__abs_copy(8, (t), (h1), (o1), (h2), (o2), (c))
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#ifdef __BUS_SPACE_COMPAT_OLDDEFS
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/* compatibility definitions; deprecated */
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#define bus_space_copy_1(t, h1, o1, h2, o2, c) \
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bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_2(t, h1, o1, h2, o2, c) \
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bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_4(t, h1, o1, h2, o2, c) \
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bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
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#define bus_space_copy_8(t, h1, o1, h2, o2, c) \
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bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Bus DMA methods.
|
|
*/
|
|
|
|
/*
|
|
* Flags used in various bus DMA methods.
|
|
*/
|
|
#define BUS_DMA_WAITOK 0x00 /* safe to sleep (pseudo-flag) */
|
|
#define BUS_DMA_NOWAIT 0x01 /* not safe to sleep */
|
|
#define BUS_DMA_ALLOCNOW 0x02 /* perform resource allocation now */
|
|
#define BUS_DMA_COHERENT 0x04 /* hint: map memory DMA coherent */
|
|
#define BUS_DMA_BUS1 0x10 /* placeholders for bus functions... */
|
|
#define BUS_DMA_BUS2 0x20
|
|
#define BUS_DMA_BUS3 0x40
|
|
#define BUS_DMA_BUS4 0x80
|
|
|
|
/*
|
|
* Private flags stored in the DMA map.
|
|
*/
|
|
#define DMAMAP_HAS_SGMAP 0x80000000 /* sgva/len are valid */
|
|
|
|
/* Forwards needed by prototypes below. */
|
|
struct mbuf;
|
|
struct uio;
|
|
|
|
/*
|
|
* Operations performed by bus_dmamap_sync().
|
|
*/
|
|
#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
|
|
#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
|
|
#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
|
|
#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
|
|
|
|
/*
|
|
* alpha_bus_t
|
|
*
|
|
* Busses supported by NetBSD/alpha, used by internal
|
|
* utility functions. NOT TO BE USED BY MACHINE-INDEPENDENT
|
|
* CODE!
|
|
*/
|
|
typedef enum {
|
|
ALPHA_BUS_TURBOCHANNEL,
|
|
ALPHA_BUS_PCI,
|
|
ALPHA_BUS_EISA,
|
|
ALPHA_BUS_ISA,
|
|
ALPHA_BUS_TLSB,
|
|
} alpha_bus_t;
|
|
|
|
typedef struct alpha_bus_dma_tag *bus_dma_tag_t;
|
|
typedef struct alpha_bus_dmamap *bus_dmamap_t;
|
|
|
|
/*
|
|
* bus_dma_segment_t
|
|
*
|
|
* Describes a single contiguous DMA transaction. Values
|
|
* are suitable for programming into DMA registers.
|
|
*/
|
|
struct alpha_bus_dma_segment {
|
|
bus_addr_t ds_addr; /* DMA address */
|
|
bus_size_t ds_len; /* length of transfer */
|
|
};
|
|
typedef struct alpha_bus_dma_segment bus_dma_segment_t;
|
|
|
|
/*
|
|
* bus_dma_tag_t
|
|
*
|
|
* A machine-dependent opaque type describing the implementation of
|
|
* DMA for a given bus.
|
|
*/
|
|
struct alpha_bus_dma_tag {
|
|
void *_cookie; /* cookie used in the guts */
|
|
|
|
/*
|
|
* Internal-use only utility methods. NOT TO BE USED BY
|
|
* MACHINE-INDEPENDENT CODE!
|
|
*/
|
|
bus_dma_tag_t (*_get_tag) __P((bus_dma_tag_t, alpha_bus_t));
|
|
|
|
/*
|
|
* DMA mapping methods.
|
|
*/
|
|
int (*_dmamap_create) __P((bus_dma_tag_t, bus_size_t, int,
|
|
bus_size_t, bus_size_t, int, bus_dmamap_t *));
|
|
void (*_dmamap_destroy) __P((bus_dma_tag_t, bus_dmamap_t));
|
|
int (*_dmamap_load) __P((bus_dma_tag_t, bus_dmamap_t, void *,
|
|
bus_size_t, struct proc *, int));
|
|
int (*_dmamap_load_mbuf) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct mbuf *, int));
|
|
int (*_dmamap_load_uio) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct uio *, int));
|
|
int (*_dmamap_load_raw) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_dma_segment_t *, int, bus_size_t, int));
|
|
void (*_dmamap_unload) __P((bus_dma_tag_t, bus_dmamap_t));
|
|
void (*_dmamap_sync) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_addr_t, bus_size_t, int));
|
|
|
|
/*
|
|
* DMA memory utility functions.
|
|
*/
|
|
int (*_dmamem_alloc) __P((bus_dma_tag_t, bus_size_t, bus_size_t,
|
|
bus_size_t, bus_dma_segment_t *, int, int *, int));
|
|
void (*_dmamem_free) __P((bus_dma_tag_t,
|
|
bus_dma_segment_t *, int));
|
|
int (*_dmamem_map) __P((bus_dma_tag_t, bus_dma_segment_t *,
|
|
int, size_t, caddr_t *, int));
|
|
void (*_dmamem_unmap) __P((bus_dma_tag_t, caddr_t, size_t));
|
|
int (*_dmamem_mmap) __P((bus_dma_tag_t, bus_dma_segment_t *,
|
|
int, int, int, int));
|
|
};
|
|
|
|
#define alphabus_dma_get_tag(t, b) \
|
|
(*(t)->_get_tag)(t, b)
|
|
|
|
#define bus_dmamap_create(t, s, n, m, b, f, p) \
|
|
(*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
|
|
#define bus_dmamap_destroy(t, p) \
|
|
(*(t)->_dmamap_destroy)((t), (p))
|
|
#define bus_dmamap_load(t, m, b, s, p, f) \
|
|
(*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
|
|
#define bus_dmamap_load_mbuf(t, m, b, f) \
|
|
(*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
|
|
#define bus_dmamap_load_uio(t, m, u, f) \
|
|
(*(t)->_dmamap_load_uio)((t), (m), (u), (f))
|
|
#define bus_dmamap_load_raw(t, m, sg, n, s, f) \
|
|
(*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
|
|
#define bus_dmamap_unload(t, p) \
|
|
(*(t)->_dmamap_unload)((t), (p))
|
|
#define bus_dmamap_sync(t, p, o, l, ops) \
|
|
(*(t)->_dmamap_sync)((t), (p), (o), (l), (ops))
|
|
#define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
|
|
(*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f))
|
|
#define bus_dmamem_free(t, sg, n) \
|
|
(*(t)->_dmamem_free)((t), (sg), (n))
|
|
#define bus_dmamem_map(t, sg, n, s, k, f) \
|
|
(*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f))
|
|
#define bus_dmamem_unmap(t, k, s) \
|
|
(*(t)->_dmamem_unmap)((t), (k), (s))
|
|
#define bus_dmamem_mmap(t, sg, n, o, p, f) \
|
|
(*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f))
|
|
|
|
/*
|
|
* bus_dmamap_t
|
|
*
|
|
* Describes a DMA mapping.
|
|
*/
|
|
struct alpha_bus_dmamap {
|
|
/*
|
|
* PRIVATE MEMBERS: not for use my machine-independent code.
|
|
*/
|
|
bus_size_t _dm_size; /* largest DMA transfer mappable */
|
|
int _dm_segcnt; /* number of segs this map can map */
|
|
bus_size_t _dm_maxsegsz; /* largest possible segment */
|
|
bus_size_t _dm_boundary; /* don't cross this */
|
|
int _dm_flags; /* misc. flags */
|
|
|
|
/*
|
|
* This is used only for SGMAP-mapped DMA, but we keep it
|
|
* here to avoid pointless indirection.
|
|
*/
|
|
int _dm_pteidx; /* PTE index */
|
|
int _dm_ptecnt; /* PTE count */
|
|
u_long _dm_sgva; /* allocated sgva */
|
|
bus_size_t _dm_sgvalen; /* svga length */
|
|
|
|
/*
|
|
* PUBLIC MEMBERS: these are used by machine-independent code.
|
|
*/
|
|
bus_size_t dm_mapsize; /* size of the mapping */
|
|
int dm_nsegs; /* # valid segments in mapping */
|
|
bus_dma_segment_t dm_segs[1]; /* segments; variable length */
|
|
};
|
|
|
|
#ifdef _ALPHA_BUS_DMA_PRIVATE
|
|
int _bus_dmamap_create __P((bus_dma_tag_t, bus_size_t, int, bus_size_t,
|
|
bus_size_t, int, bus_dmamap_t *));
|
|
void _bus_dmamap_destroy __P((bus_dma_tag_t, bus_dmamap_t));
|
|
|
|
int _bus_dmamap_load_direct_common __P((bus_dma_tag_t, bus_dmamap_t,
|
|
void *, bus_size_t, struct proc *, int, bus_addr_t));
|
|
int _bus_dmamap_load_mbuf_direct_common __P((bus_dma_tag_t,
|
|
bus_dmamap_t, struct mbuf *, int, bus_addr_t));
|
|
int _bus_dmamap_load_uio_direct_common __P((bus_dma_tag_t,
|
|
bus_dmamap_t, struct uio *, int, bus_addr_t));
|
|
int _bus_dmamap_load_raw_direct_common __P((bus_dma_tag_t,
|
|
bus_dmamap_t, bus_dma_segment_t *, int, bus_size_t,
|
|
int, bus_addr_t));
|
|
|
|
void _bus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t));
|
|
void _bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
|
|
bus_size_t, int));
|
|
|
|
int _bus_dmamem_alloc __P((bus_dma_tag_t tag, bus_size_t size,
|
|
bus_size_t alignment, bus_size_t boundary,
|
|
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags));
|
|
void _bus_dmamem_free __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs));
|
|
int _bus_dmamem_map __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs, size_t size, caddr_t *kvap, int flags));
|
|
void _bus_dmamem_unmap __P((bus_dma_tag_t tag, caddr_t kva,
|
|
size_t size));
|
|
int _bus_dmamem_mmap __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs, int off, int prot, int flags));
|
|
#endif /* _ALPHA_BUS_DMA_PRIVATE */
|
|
|
|
#endif /* _ALPHA_BUS_H_ */
|