28b1691f4d
was sent to developers, but will eventually become a man page or
something), i noticed a few in various names:
(1) _map and _alloc should take a flags argument, rather than a
'cacheable' boolean.
(2) BUS_BARRIER_* flags should be BUS_SPACE_BARRIER_*.
(3) bus_space_copy_* should be bus_space_copy_region_* for consistency
with other region ops.
Fix all of these (in a backward-compatible way, at least for now). Redefine
internal usees of those names to use the new names. Also, while at it,
clean up the copy functions (remove unnecessary variables) and make sure
that they and other functions conform to the spec.
586 lines
20 KiB
C
586 lines
20 KiB
C
/* $NetBSD: bus.h,v 1.14 1997/07/23 07:47:51 cgd Exp $ */
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/*-
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* Copyright (c) 1997 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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#define __BUS_SPACE_COMPAT_OLDDEFS
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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))
|
|
#define bus_space_copy_4(t, h1, o1, h2, o2, c) \
|
|
bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c))
|
|
#define bus_space_copy_8(t, h1, o1, h2, o2, c) \
|
|
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_DMAMEM_NOSYNC 0x04 /* map memory to not require sync */
|
|
#define BUS_DMA_BUS1 0x10 /* placeholders for bus functions... */
|
|
#define BUS_DMA_BUS2 0x20
|
|
#define BUS_DMA_BUS3 0x40
|
|
#define BUS_DMA_BUS4 0x80
|
|
|
|
/* Forwards needed by prototypes below. */
|
|
struct mbuf;
|
|
struct uio;
|
|
struct alpha_sgmap_cookie;
|
|
|
|
/*
|
|
* bus_dmasync_op_t
|
|
*
|
|
* Operations performed by bus_dmamap_sync().
|
|
*/
|
|
typedef enum {
|
|
BUS_DMASYNC_PREREAD,
|
|
BUS_DMASYNC_POSTREAD,
|
|
BUS_DMASYNC_PREWRITE,
|
|
BUS_DMASYNC_POSTWRITE,
|
|
} bus_dmasync_op_t;
|
|
|
|
/*
|
|
* 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_dmasync_op_t));
|
|
|
|
/*
|
|
* 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) \
|
|
(void)((t)->_dmamap_sync ? \
|
|
(*(t)->_dmamap_sync)((t), (p), (o)) : (void)0)
|
|
|
|
#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 */
|
|
|
|
/* SGMAP cookie used for SGMAP-mapped DMA */
|
|
struct alpha_sgmap_cookie *_dm_sgcookie;
|
|
|
|
/*
|
|
* PUBLIC MEMBERS: these are used by machine-independent code.
|
|
*/
|
|
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_dmasync_op_t));
|
|
|
|
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_ */
|