NetBSD-5.0.2/sys/arch/atari/include/bus.h
/* $NetBSD: bus.h,v 1.37 2008/04/28 20:23:15 martin Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#ifndef _ATARI_BUS_H_
#define _ATARI_BUS_H_
/*
* I/O addresses (in bus space)
*/
typedef u_long bus_io_addr_t;
typedef u_long bus_io_size_t;
/*
* Memory addresses (in bus space)
*/
typedef u_long bus_addr_t;
typedef u_long bus_size_t;
#define __BUS_SPACE_HAS_STREAM_METHODS
/*
* Access methods for bus resources and address space.
*/
typedef struct atari_bus_space *bus_space_tag_t;
typedef u_long bus_space_handle_t;
#define BUS_SPACE_MAP_CACHEABLE 0x01
#define BUS_SPACE_MAP_LINEAR 0x02
#define BUS_SPACE_MAP_PREFETCHABLE 0x04
int bus_space_alloc __P((bus_space_tag_t, bus_addr_t, bus_addr_t,
bus_size_t, bus_size_t, bus_size_t, int,
bus_addr_t *, bus_space_handle_t *));
int bus_space_map __P((bus_space_tag_t, bus_addr_t, bus_size_t,
int, bus_space_handle_t *));
void bus_space_unmap __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
int bus_space_subregion __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, bus_size_t, bus_space_handle_t *));
/*
* Tag allocation
*/
bus_space_tag_t beb_alloc_bus_space_tag __P((bus_space_tag_t));
bus_space_tag_t leb_alloc_bus_space_tag __P((bus_space_tag_t));
/*
* XXX
*/
bus_space_tag_t mb_alloc_bus_space_tag __P((void));
void mb_free_bus_space_tag __P((bus_space_tag_t));
/*
* Structure containing functions and other feature-data that might differ
* between the various bus spaces on the atari. Currently 'known' bus
* spaces are: ISA, PCI, VME and 'mainbus'.
*/
struct atari_bus_space {
u_long base;
/* XXX Next 2 lines can be turned into an opaque cookie */
int stride;
int wo_1, wo_2, wo_4, wo_8;
/* Autoconf detection stuff */
int (*abs_p_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
int (*abs_p_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
int (*abs_p_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
int (*abs_p_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
/* read (single) */
u_int8_t (*abs_r_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
u_int16_t (*abs_r_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
u_int32_t (*abs_r_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
u_int64_t (*abs_r_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
/* read (single) stream */
u_int8_t (*abs_rs_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
u_int16_t (*abs_rs_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
u_int32_t (*abs_rs_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
u_int64_t (*abs_rs_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t));
/* read multiple */
void (*abs_rm_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t *, bus_size_t));
void (*abs_rm_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t *, bus_size_t));
void (*abs_rm_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t *, bus_size_t));
void (*abs_rm_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t *, bus_size_t));
/* read multiple stream */
void (*abs_rms_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t *, bus_size_t));
void (*abs_rms_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t *, bus_size_t));
void (*abs_rms_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t *, bus_size_t));
void (*abs_rms_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t *, bus_size_t));
/* read region */
void (*abs_rr_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t *, bus_size_t));
void (*abs_rr_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t *, bus_size_t));
void (*abs_rr_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t *, bus_size_t));
void (*abs_rr_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t *, bus_size_t));
/* read region stream */
void (*abs_rrs_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t *, bus_size_t));
void (*abs_rrs_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t *, bus_size_t));
void (*abs_rrs_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t *, bus_size_t));
void (*abs_rrs_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t *, bus_size_t));
/* write (single) */
void (*abs_w_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t));
void (*abs_w_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t));
void (*abs_w_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t));
void (*abs_w_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t));
/* write (single) stream */
void (*abs_ws_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t));
void (*abs_ws_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t));
void (*abs_ws_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t));
void (*abs_ws_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t));
/* write multiple */
void (*abs_wm_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t));
void (*abs_wm_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t));
void (*abs_wm_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t));
void (*abs_wm_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t));
/* write multiple stream */
void (*abs_wms_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t));
void (*abs_wms_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t));
void (*abs_wms_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t));
void (*abs_wms_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t));
/* write region */
void (*abs_wr_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t));
void (*abs_wr_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t));
void (*abs_wr_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t));
void (*abs_wr_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t));
/* write region stream */
void (*abs_wrs_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t));
void (*abs_wrs_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t));
void (*abs_wrs_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t));
void (*abs_wrs_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t));
/* set multiple */
void (*abs_sm_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t, bus_size_t));
void (*abs_sm_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t, bus_size_t));
void (*abs_sm_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t, bus_size_t));
void (*abs_sm_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t, bus_size_t));
/* set region */
void (*abs_sr_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int8_t, bus_size_t));
void (*abs_sr_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int16_t, bus_size_t));
void (*abs_sr_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int32_t, bus_size_t));
void (*abs_sr_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, u_int64_t, bus_size_t));
#if 0 /* See comment on __abs_copy below */
/* copy */
void (*abs_c_1) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, bus_space_handle_t, bus_size_t,
bus_size_t));
void (*abs_c_2) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, bus_space_handle_t, bus_size_t,
bus_size_t));
void (*abs_c_4) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, bus_space_handle_t, bus_size_t,
bus_size_t));
void (*abs_c_8) __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, bus_space_handle_t, bus_size_t,
bus_size_t));
#endif
};
/*
* Utility macros; INTERNAL USE ONLY.
*/
#define __abs_c(a,b) __CONCAT(a,b)
#define __abs_opname(op,size) __abs_c(__abs_c(__abs_c(abs_,op),_),size)
#define __abs_p(sz, t, h, o) \
(*(t)->__abs_opname(p,sz))(t, h, o)
#define __abs_rs(sz, t, h, o) \
(*(t)->__abs_opname(r,sz))(t, h, o)
#define __abs_rss(sz, t, h, o) \
(*(t)->__abs_opname(rs,sz))(t, h, o)
#define __abs_ws(sz, t, h, o, v) \
(*(t)->__abs_opname(w,sz))(t, h, o, v)
#define __abs_wss(sz, t, h, o, v) \
(*(t)->__abs_opname(ws,sz))(t, h, o, v)
#define __abs_nonsingle(type, sz, t, h, o, a, c) \
(*(t)->__abs_opname(type,sz))(t, h, o, a, c)
#define __abs_set(type, sz, t, h, o, v, c) \
(*(t)->__abs_opname(type,sz))(t, h, o, v, c)
/*
* No swaps needed and no other trickery, so it should be possible
* to shortcut these to memcpy() directly [ leo 19990107 ]
*/
#if 0
#define __abs_copy(sz, t, h1, o1, h2, o2, cnt) \
(*(t)->__abs_opname(c,sz))(t, h1, o1, h2, o2, cnt)
#else
#define __abs_copy(sz, t, h1, o1, h2, o2, cnt) do { \
memcpy((void*)(h2 + o2), (void *)(h1 + o1), sz * cnt); \
(void)t; \
} while (0)
#endif
/*
* Check accesibility of the location for various sized bus accesses
*/
#define bus_space_peek_1(t, h, o) __abs_p(1,(t),(h),(o))
#define bus_space_peek_2(t, h, o) __abs_p(2,(t),(h),(o))
#define bus_space_peek_4(t, h, o) __abs_p(4,(t),(h),(o))
#define bus_space_peek_8(t, h, o) __abs_p(8,(t),(h),(o))
/*
* Bus read (single) operations.
*/
#define bus_space_read_1(t, h, o) __abs_rs(1,(t),(h),(o))
#define bus_space_read_2(t, h, o) __abs_rs(2,(t),(h),(o))
#define bus_space_read_4(t, h, o) __abs_rs(4,(t),(h),(o))
#define bus_space_read_8(t, h, o) __abs_rs(8,(t),(h),(o))
/*
* Bus read (single) stream operations.
*/
#define bus_space_read_stream_1(t, h, o) __abs_rss(1,(t),(h),(o))
#define bus_space_read_stream_2(t, h, o) __abs_rss(2,(t),(h),(o))
#define bus_space_read_stream_4(t, h, o) __abs_rss(4,(t),(h),(o))
#define bus_space_read_stream_8(t, h, o) __abs_rss(8,(t),(h),(o))
/*
* Bus read multiple operations.
*/
#define bus_space_read_multi_1(t, h, o, a, c) \
__abs_nonsingle(rm,1,(t),(h),(o),(a),(c))
#define bus_space_read_multi_2(t, h, o, a, c) \
__abs_nonsingle(rm,2,(t),(h),(o),(a),(c))
#define bus_space_read_multi_4(t, h, o, a, c) \
__abs_nonsingle(rm,4,(t),(h),(o),(a),(c))
#define bus_space_read_multi_8(t, h, o, a, c) \
__abs_nonsingle(rm,8,(t),(h),(o),(a),(c))
/*
* Bus read multiple stream operations.
*/
#define bus_space_read_multi_stream_1(t, h, o, a, c) \
__abs_nonsingle(rms,1,(t),(h),(o),(a),(c))
#define bus_space_read_multi_stream_2(t, h, o, a, c) \
__abs_nonsingle(rms,2,(t),(h),(o),(a),(c))
#define bus_space_read_multi_stream_4(t, h, o, a, c) \
__abs_nonsingle(rms,4,(t),(h),(o),(a),(c))
#define bus_space_read_multi_stream_8(t, h, o, a, c) \
__abs_nonsingle(rms,8,(t),(h),(o),(a),(c))
/*
* Bus read region operations.
*/
#define bus_space_read_region_1(t, h, o, a, c) \
__abs_nonsingle(rr,1,(t),(h),(o),(a),(c))
#define bus_space_read_region_2(t, h, o, a, c) \
__abs_nonsingle(rr,2,(t),(h),(o),(a),(c))
#define bus_space_read_region_4(t, h, o, a, c) \
__abs_nonsingle(rr,4,(t),(h),(o),(a),(c))
#define bus_space_read_region_8(t, h, o, a, c) \
__abs_nonsingle(rr,8,(t),(h),(o),(a),(c))
/*
* Bus read region stream operations.
*/
#define bus_space_read_region_stream_1(t, h, o, a, c) \
__abs_nonsingle(rrs,1,(t),(h),(o),(a),(c))
#define bus_space_read_region_stream_2(t, h, o, a, c) \
__abs_nonsingle(rrs,2,(t),(h),(o),(a),(c))
#define bus_space_read_region_stream_4(t, h, o, a, c) \
__abs_nonsingle(rrs,4,(t),(h),(o),(a),(c))
#define bus_space_read_region_stream_8(t, h, o, a, c) \
__abs_nonsingle(rrs,8,(t),(h),(o),(a),(c))
/*
* Bus write (single) operations.
*/
#define bus_space_write_1(t, h, o, v) __abs_ws(1,(t),(h),(o),(v))
#define bus_space_write_2(t, h, o, v) __abs_ws(2,(t),(h),(o),(v))
#define bus_space_write_4(t, h, o, v) __abs_ws(4,(t),(h),(o),(v))
#define bus_space_write_8(t, h, o, v) __abs_ws(8,(t),(h),(o),(v))
/*
* Bus write (single) stream operations.
*/
#define bus_space_write_stream_1(t, h, o, v) __abs_wss(1,(t),(h),(o),(v))
#define bus_space_write_stream_2(t, h, o, v) __abs_wss(2,(t),(h),(o),(v))
#define bus_space_write_stream_4(t, h, o, v) __abs_wss(4,(t),(h),(o),(v))
#define bus_space_write_stream_8(t, h, o, v) __abs_wss(8,(t),(h),(o),(v))
/*
* Bus write multiple operations.
*/
#define bus_space_write_multi_1(t, h, o, a, c) \
__abs_nonsingle(wm,1,(t),(h),(o),(a),(c))
#define bus_space_write_multi_2(t, h, o, a, c) \
__abs_nonsingle(wm,2,(t),(h),(o),(a),(c))
#define bus_space_write_multi_4(t, h, o, a, c) \
__abs_nonsingle(wm,4,(t),(h),(o),(a),(c))
#define bus_space_write_multi_8(t, h, o, a, c) \
__abs_nonsingle(wm,8,(t),(h),(o),(a),(c))
/*
* Bus write multiple stream operations.
*/
#define bus_space_write_multi_stream_1(t, h, o, a, c) \
__abs_nonsingle(wms,1,(t),(h),(o),(a),(c))
#define bus_space_write_multi_stream_2(t, h, o, a, c) \
__abs_nonsingle(wms,2,(t),(h),(o),(a),(c))
#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))
/*
* void *bus_space_vaddr __P((bus_space_tag_t, bus_space_handle_t));
*
* Get the kernel virtual address for the mapped bus space.
* Only allowed for regions mapped with BUS_SPACE_MAP_LINEAR.
* (XXX not enforced)
*/
#define bus_space_vaddr(t, h) ((void)(t), (void *)(h))
/*
* paddr_t bus_space_mmap __P((bus_space_tag_t t, bus_addr_t base,
* off_t offset, int prot, int flags));
*
* Mmap an area of bus space.
*/
paddr_t bus_space_mmap __P((bus_space_tag_t, bus_addr_t, off_t,
int, int));
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
/*
* Bus read/write barrier methods.
*
* void bus_space_barrier __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* bus_size_t len, int flags));
*
* Note: the Atari does not currently require barriers, but we must
* provide the flags to MI code.
*/
#define bus_space_barrier(t, h, o, l, f) \
((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
/*
* Flags used in various bus DMA methods.
*/
#define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */
#define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */
#define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */
#define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */
#define BUS_DMA_STREAMING 0x008 /* hint: sequential, unidirectional */
#define BUS_DMA_BUS1 0x010 /* placeholders for bus functions... */
#define BUS_DMA_BUS2 0x020
#define BUS_DMA_BUS3 0x040
#define BUS_DMA_BUS4 0x080
#define BUS_DMA_READ 0x100 /* mapping is device -> memory only */
#define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */
#define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */
/* 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 */
typedef struct atari_bus_dma_tag *bus_dma_tag_t;
typedef struct atari_bus_dmamap *bus_dmamap_t;
#define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0)
/*
* 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_dma_tag_t
*
* A machine-dependent opaque type describing the implementation of
* DMA for a given bus.
*/
struct atari_bus_dma_tag {
/*
* The `bounce threshold' is checked while we are loading
* the DMA map. If the physical address of the segment
* exceeds the threshold, an error will be returned. The
* caller can then take whatever action is necessary to
* bounce the transfer. If this value is 0, it will be
* ignored.
*/
bus_addr_t _bounce_thresh;
/*
* The next value can be used to compensate for a constant
* displacement between the address space view of the CPU
* and the devices on the bus.
*/
int32_t _displacement;
/*
* 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));
};
#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) \
(void)((t)->_dmamap_sync ? \
(*(t)->_dmamap_sync)((t), (p), (o), (l), (ops)) : (void)0)
#define bus_dmatag_subregion(t, mna, mxa, nt, f) EOPNOTSUPP
#define bus_dmatag_destroy(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_maxmaxsegsz; /* fixed largest possible segment */
bus_size_t _dm_boundary; /* don't cross this */
bus_addr_t _dm_bounce_thresh; /* bounce threshold; see tag */
int _dm_flags; /* misc. flags */
void *_dm_cookie; /* cookie for bus-specific funcs */
/*
* PUBLIC MEMBERS: these are used by machine-independent code.
*/
bus_size_t dm_maxsegsz; /* largest possible segment */
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 _ATARI_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 __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));
#endif /* _ATARI_BUS_DMA_PRIVATE */
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));
int bus_dmamem_alloc_range __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,
paddr_t low, paddr_t high));
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, void **kvap, int flags));
void bus_dmamem_unmap __P((bus_dma_tag_t tag, void *kva,
size_t size));
paddr_t bus_dmamem_mmap __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
int nsegs, off_t off, int prot, int flags));
#endif /* _ATARI_BUS_H_ */