580 lines
21 KiB
C
580 lines
21 KiB
C
/* $NetBSD: bus.h,v 1.14 1998/12/01 15:32:28 leo Exp $ */
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/*-
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* Copyright (c) 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 _ATARI_BUS_H_
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#define _ATARI_BUS_H_
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/*
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* I/O addresses (in bus space)
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*/
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typedef u_long bus_io_addr_t;
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typedef u_long bus_io_size_t;
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/*
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* Memory 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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#define __BUS_SPACE_HAS_STREAM_METHODS
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/*
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* Access methods for bus resources and address space.
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*/
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typedef struct atari_bus_space *bus_space_tag_t;
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typedef caddr_t bus_space_handle_t;
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#define BUS_SPACE_MAP_CACHEABLE 0x01
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#define BUS_SPACE_MAP_LINEAR 0x02
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int bus_space_map __P((bus_space_tag_t, bus_addr_t, bus_size_t,
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int, bus_space_handle_t *));
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void bus_space_unmap __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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int bus_space_subregion __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, bus_size_t, bus_space_handle_t *));
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/*
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* XXX
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*/
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bus_space_tag_t mb_alloc_bus_space_tag __P((void));
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void mb_free_bus_space_tag __P((bus_space_tag_t));
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/*
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* Structure containing functions and other feature-data that might differ
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* between the various bus spaces on the atari. Currently 'known' bus
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* spaces are: ISA, PCI, VME and 'mainbus'.
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*/
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struct atari_bus_space {
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u_long base;
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/* XXX Next 2 lines can be turned into an opaque cookie */
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int stride;
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int wo_1, wo_2, wo_4, wo_8;
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/* Autoconf detection stuff */
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int (*abs_p_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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int (*abs_p_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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int (*abs_p_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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int (*abs_p_8) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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/* read (single) */
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u_int8_t (*abs_r_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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u_int16_t (*abs_r_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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u_int32_t (*abs_r_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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u_int64_t (*abs_r_8) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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/* read (single) stream */
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u_int8_t (*abs_rs_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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u_int16_t (*abs_rs_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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u_int32_t (*abs_rs_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t));
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u_int64_t (*abs_rs_8) __P((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int64_t *, bus_size_t));
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/* read multiple stream */
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void (*abs_rms_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int8_t *, bus_size_t));
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void (*abs_rms_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int16_t *, bus_size_t));
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void (*abs_rms_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int32_t *, bus_size_t));
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void (*abs_rms_8) __P((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int64_t *, bus_size_t));
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/* read region stream */
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void (*abs_rrs_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int8_t *, bus_size_t));
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void (*abs_rrs_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int16_t *, bus_size_t));
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void (*abs_rrs_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int32_t *, bus_size_t));
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void (*abs_rrs_8) __P((bus_space_tag_t, 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((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int8_t));
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void (*abs_w_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int16_t));
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void (*abs_w_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int32_t));
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void (*abs_w_8) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int64_t));
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/* write (single) stream */
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void (*abs_ws_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int8_t));
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void (*abs_ws_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int16_t));
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void (*abs_ws_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, u_int32_t));
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void (*abs_ws_8) __P((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int64_t *, bus_size_t));
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/* write multiple stream */
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void (*abs_wms_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int8_t *, bus_size_t));
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void (*abs_wms_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int16_t *, bus_size_t));
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void (*abs_wms_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int32_t *, bus_size_t));
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void (*abs_wms_8) __P((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int64_t *, bus_size_t));
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/* write region stream */
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void (*abs_wrs_1) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int8_t *, bus_size_t));
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void (*abs_wrs_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int16_t *, bus_size_t));
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void (*abs_wrs_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, const u_int32_t *, bus_size_t));
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void (*abs_wrs_8) __P((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, 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((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, bus_space_handle_t, bus_size_t,
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bus_size_t));
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void (*abs_c_2) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, bus_space_handle_t, bus_size_t,
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bus_size_t));
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void (*abs_c_4) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, bus_space_handle_t, bus_size_t,
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bus_size_t));
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void (*abs_c_8) __P((bus_space_tag_t, bus_space_handle_t,
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bus_size_t, bus_space_handle_t, bus_size_t,
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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_p(sz, t, h, o) \
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(*(t)->__abs_opname(p,sz))(t, h, o)
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#define __abs_rs(sz, t, h, o) \
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(*(t)->__abs_opname(r,sz))(t, h, o)
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#define __abs_rss(sz, t, h, o) \
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(*(t)->__abs_opname(rs,sz))(t, h, o)
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#define __abs_ws(sz, t, h, o, v) \
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(*(t)->__abs_opname(w,sz))(t, h, o, v)
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#define __abs_wss(sz, t, h, o, v) \
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(*(t)->__abs_opname(ws,sz))(t, h, o, v)
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#define __abs_nonsingle(type, sz, t, h, o, a, c) \
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(*(t)->__abs_opname(type,sz))(t, h, o, a, c)
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#define __abs_set(type, sz, t, h, o, v, c) \
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(*(t)->__abs_opname(type,sz))(t, 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, h1, o1, h2, o2, cnt)
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/*
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* Check accesibility of the location for various sized bus accesses
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*/
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#define bus_space_peek_1(t, h, o) __abs_p(1,(t),(h),(o))
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#define bus_space_peek_2(t, h, o) __abs_p(2,(t),(h),(o))
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#define bus_space_peek_4(t, h, o) __abs_p(4,(t),(h),(o))
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#define bus_space_peek_8(t, h, o) __abs_p(8,(t),(h),(o))
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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 (single) stream operations.
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*/
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#define bus_space_read_stream_1(t, h, o) __abs_rss(1,(t),(h),(o))
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#define bus_space_read_stream_2(t, h, o) __abs_rss(2,(t),(h),(o))
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#define bus_space_read_stream_4(t, h, o) __abs_rss(4,(t),(h),(o))
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#define bus_space_read_stream_8(t, h, o) __abs_rss(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 multiple stream operations.
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*/
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#define bus_space_read_multi_stream_1(t, h, o, a, c) \
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__abs_nonsingle(rms,1,(t),(h),(o),(a),(c))
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#define bus_space_read_multi_stream_2(t, h, o, a, c) \
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__abs_nonsingle(rms,2,(t),(h),(o),(a),(c))
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#define bus_space_read_multi_stream_4(t, h, o, a, c) \
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__abs_nonsingle(rms,4,(t),(h),(o),(a),(c))
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#define bus_space_read_multi_stream_8(t, h, o, a, c) \
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__abs_nonsingle(rms,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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/*
|
|
* Bus read region stream operations.
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|
*/
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#define bus_space_read_region_stream_1(t, h, o, a, c) \
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__abs_nonsingle(rrs,1,(t),(h),(o),(a),(c))
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#define bus_space_read_region_stream_2(t, h, o, a, c) \
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__abs_nonsingle(rrs,2,(t),(h),(o),(a),(c))
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#define bus_space_read_region_stream_4(t, h, o, a, c) \
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|
__abs_nonsingle(rrs,4,(t),(h),(o),(a),(c))
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|
#define bus_space_read_region_stream_8(t, h, o, a, c) \
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__abs_nonsingle(rrs,8,(t),(h),(o),(a),(c))
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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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|
|
|
/*
|
|
* Bus write (single) stream operations.
|
|
*/
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|
#define bus_space_write_stream_1(t, h, o, v) __abs_wss(1,(t),(h),(o),(v))
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|
#define bus_space_write_stream_2(t, h, o, v) __abs_wss(2,(t),(h),(o),(v))
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|
#define bus_space_write_stream_4(t, h, o, v) __abs_wss(4,(t),(h),(o),(v))
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|
#define bus_space_write_stream_8(t, h, o, v) __abs_wss(8,(t),(h),(o),(v))
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|
|
|
|
|
/*
|
|
* Bus write multiple operations.
|
|
*/
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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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|
|
|
/*
|
|
* Bus write multiple stream operations.
|
|
*/
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|
#define bus_space_write_multi_stream_1(t, h, o, a, c) \
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|
__abs_nonsingle(wms,1,(t),(h),(o),(a),(c))
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|
#define bus_space_write_multi_stream_2(t, h, o, a, c) \
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|
__abs_nonsingle(wms,2,(t),(h),(o),(a),(c))
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|
#define bus_space_write_multi_stream_4(t, h, o, a, c) \
|
|
__abs_nonsingle(wms,4,(t),(h),(o),(a),(c))
|
|
#define bus_space_write_multi_stream_8(t, h, o, a, c) \
|
|
__abs_nonsingle(wms,8,(t),(h),(o),(a),(c))
|
|
|
|
|
|
/*
|
|
* Bus write region operations.
|
|
*/
|
|
#define bus_space_write_region_1(t, h, o, a, c) \
|
|
__abs_nonsingle(wr,1,(t),(h),(o),(a),(c))
|
|
#define bus_space_write_region_2(t, h, o, a, c) \
|
|
__abs_nonsingle(wr,2,(t),(h),(o),(a),(c))
|
|
#define bus_space_write_region_4(t, h, o, a, c) \
|
|
__abs_nonsingle(wr,4,(t),(h),(o),(a),(c))
|
|
#define bus_space_write_region_8(t, h, o, a, c) \
|
|
__abs_nonsingle(wr,8,(t),(h),(o),(a),(c))
|
|
|
|
/*
|
|
* Bus write region stream operations.
|
|
*/
|
|
#define bus_space_write_region_stream_1(t, h, o, a, c) \
|
|
__abs_nonsingle(wrs,1,(t),(h),(o),(a),(c))
|
|
#define bus_space_write_region_stream_2(t, h, o, a, c) \
|
|
__abs_nonsingle(wrs,2,(t),(h),(o),(a),(c))
|
|
#define bus_space_write_region_stream_4(t, h, o, a, c) \
|
|
__abs_nonsingle(wrs,4,(t),(h),(o),(a),(c))
|
|
#define bus_space_write_region_stream_8(t, h, o, a, c) \
|
|
__abs_nonsingle(wrs,8,(t),(h),(o),(a),(c))
|
|
|
|
|
|
/*
|
|
* Set multiple operations.
|
|
*/
|
|
#define bus_space_set_multi_1(t, h, o, v, c) \
|
|
__abs_set(sm,1,(t),(h),(o),(v),(c))
|
|
#define bus_space_set_multi_2(t, h, o, v, c) \
|
|
__abs_set(sm,2,(t),(h),(o),(v),(c))
|
|
#define bus_space_set_multi_4(t, h, o, v, c) \
|
|
__abs_set(sm,4,(t),(h),(o),(v),(c))
|
|
#define bus_space_set_multi_8(t, h, o, v, c) \
|
|
__abs_set(sm,8,(t),(h),(o),(v),(c))
|
|
|
|
|
|
/*
|
|
* Set region operations.
|
|
*/
|
|
#define bus_space_set_region_1(t, h, o, v, c) \
|
|
__abs_set(sr,1,(t),(h),(o),(v),(c))
|
|
#define bus_space_set_region_2(t, h, o, v, c) \
|
|
__abs_set(sr,2,(t),(h),(o),(v),(c))
|
|
#define bus_space_set_region_4(t, h, o, v, c) \
|
|
__abs_set(sr,4,(t),(h),(o),(v),(c))
|
|
#define bus_space_set_region_8(t, h, o, v, c) \
|
|
__abs_set(sr,8,(t),(h),(o),(v),(c))
|
|
|
|
|
|
/*
|
|
* Copy region operations.
|
|
*/
|
|
#define bus_space_copy_region_1(t, h1, o1, h2, o2, c) \
|
|
__abs_copy(1, (t), (h1), (o1), (h2), (o2), (c))
|
|
#define bus_space_copy_region_2(t, h1, o1, h2, o2, c) \
|
|
__abs_copy(2, (t), (h1), (o1), (h2), (o2), (c))
|
|
#define bus_space_copy_region_4(t, h1, o1, h2, o2, c) \
|
|
__abs_copy(4, (t), (h1), (o1), (h2), (o2), (c))
|
|
#define bus_space_copy_region_8(t, h1, o1, h2, o2, c) \
|
|
__abs_copy(8, (t), (h1), (o1), (h2), (o2), (c))
|
|
|
|
/*
|
|
* 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
|
|
|
|
/* 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 */
|
|
|
|
/*
|
|
* Tag values:
|
|
*/
|
|
#define BUS_ISA_DMA_TAG 0x00
|
|
#define BUS_PCI_DMA_TAG 0x01
|
|
|
|
typedef int bus_dma_tag_t;
|
|
typedef struct atari_bus_dmamap *bus_dmamap_t;
|
|
|
|
/*
|
|
* bus_dma_segment_t
|
|
*
|
|
* Describes a single contiguous DMA transaction. Values
|
|
* are suitable for programming into DMA registers.
|
|
*/
|
|
struct atari_bus_dma_segment {
|
|
bus_addr_t ds_addr; /* DMA address */
|
|
bus_size_t ds_len; /* length of transfer */
|
|
};
|
|
typedef struct atari_bus_dma_segment bus_dma_segment_t;
|
|
|
|
/*
|
|
* bus_dmamap_t
|
|
*
|
|
* Describes a DMA mapping.
|
|
*/
|
|
struct atari_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 */
|
|
|
|
/*
|
|
* 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 */
|
|
};
|
|
|
|
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 __P((bus_dma_tag_t, bus_dmamap_t, void *,
|
|
bus_size_t, struct proc *, int));
|
|
int bus_dmamap_load_mbuf __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct mbuf *, int));
|
|
int bus_dmamap_load_uio __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct uio *, int));
|
|
int bus_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_dma_segment_t *, int, bus_size_t, int));
|
|
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 /* _ATARI_BUS_H_ */
|