371 lines
11 KiB
C
371 lines
11 KiB
C
/* $NetBSD: bus.h,v 1.2 1997/02/11 07:37:41 scottr Exp $ */
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/*
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* Copyright "g" (c) 1997 Scott Reynolds. All rights reserved.
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* Copyright "g" (c) 1996 Jason R. Thorpe. All rights reserved.
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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 Scott Reynolds for the
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* NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MAC68K_BUS_H_
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#define _MAC68K_BUS_H_
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/*
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* Value for the mac68k bus space tag, not to be used directly by MI code.
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*/
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#define MAC68K_BUS_SPACE_MEM 0 /* space is mem space */
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/*
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* Bus address and size types
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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 resources and address space.
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*/
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typedef int bus_space_tag_t;
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typedef u_long bus_space_handle_t;
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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 t, bus_space_handle_t bsh,
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bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp));
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/*
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* u_intN_t bus_space_read_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset));
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*
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* Read a 1, 2, 4, or 8 byte quantity from bus space
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* described by tag/handle/offset.
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*/
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#define bus_space_read_1(t, h, o) \
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((void) t, (*(volatile u_int8_t *)((h) + (o))))
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#define bus_space_read_2(t, h, o) \
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((void) t, (*(volatile u_int16_t *)((h) + (o))))
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#define bus_space_read_4(t, h, o) \
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((void) t, (*(volatile u_int32_t *)((h) + (o))))
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#if 0 /* Cause a link error for bus_space_read_8 */
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#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
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#endif
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/*
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* void bus_space_read_multi_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* u_intN_t *addr, size_t count));
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*
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* Read `count' 1, 2, 4, or 8 byte quantities from bus space
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* described by tag/handle/offset and copy into buffer provided.
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*/
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#define bus_space_read_multi_1(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movb a0@,a1@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_read_multi_2(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movw a0@,a1@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_read_multi_4(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movl a0@,a1@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#if 0 /* Cause a link error for bus_space_read_multi_8 */
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#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
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#endif
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/*
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* void bus_space_read_region_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* u_intN_t *addr, size_t count));
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*
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* Read `count' 1, 2, 4, or 8 byte quantities from bus space
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* described by tag/handle and starting at `offset' and copy into
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* buffer provided.
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*/
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#define bus_space_read_region_1(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movb a0@+,a1@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_read_region_2(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movw a0@+,a1@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_read_region_4(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movl a0@+,a1@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#if 0 /* Cause a link error for bus_space_read_region_8 */
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#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
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#endif
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/*
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* void bus_space_write_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* u_intN_t value));
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*
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* Write the 1, 2, 4, or 8 byte value `value' to bus space
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* described by tag/handle/offset.
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*/
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#define bus_space_write_1(t, h, o, v) \
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((void) t, ((void)(*(volatile u_int8_t *)((h) + (o)) = (v))))
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#define bus_space_write_2(t, h, o, v) \
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((void) t, ((void)(*(volatile u_int16_t *)((h) + (o)) = (v))))
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#define bus_space_write_4(t, h, o, v) \
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((void) t, ((void)(*(volatile u_int32_t *)((h) + (o)) = (v))))
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#if 0 /* Cause a link error for bus_space_write_8 */
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#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
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#endif
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/*
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* void bus_space_write_multi_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* const u_intN_t *addr, size_t count));
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*
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* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
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* provided to bus space described by tag/handle/offset.
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*/
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#define bus_space_write_multi_1(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movb a1@+,a0@ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_write_multi_2(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movw a1@+,a0@ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_write_multi_4(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movl a1@+,a0@ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#if 0 /* Cause a link error for bus_space_write_8 */
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#define bus_space_write_multi_8(t, h, o, a, c) \
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!!! bus_space_write_multi_8 unimplimented !!!
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#endif
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/*
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* void bus_space_write_region_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* const u_intN_t *addr, size_t count));
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*
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* Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
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* to bus space described by tag/handle starting at `offset'.
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*/
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#define bus_space_write_region_1(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movb a1@+,a0@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_write_region_2(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movw a1@+,a0@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#define bus_space_write_region_4(t, h, o, a, c) do { \
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__asm __volatile (" \
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movl %0,a0 ; \
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movl %1,a1 ; \
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movl %2,d0 ; \
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1: movl a1@+,a0@+ ; \
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subql #1,d0 ; \
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jne 1b" : \
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: \
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"r" ((h) + (o)), "g" (a), "g" (c) : \
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"a0","a1","d0"); \
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} while (0);
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#if 0 /* Cause a link error for bus_space_write_region_8 */
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#define bus_space_write_region_8 \
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!!! bus_space_write_region_8 unimplemented !!!
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#endif
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/*
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* void bus_space_set_multi_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
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* size_t count));
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*
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* Write the 1, 2, 4, or 8 byte value `val' to bus space described
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* by tag/handle/offset `count' times.
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*/
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/* XXX IMPLEMENT bus_space_set_multi_N() XXX */
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/*
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* void bus_space_set_region_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
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* size_t count));
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*
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* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
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* by tag/handle starting at `offset'.
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*/
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/* XXX IMPLEMENT bus_space_set_region_N() XXX */
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/*
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* void bus_space_copy_N __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh1, bus_size_t off1,
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* bus_space_handle_t bsh2, bus_size_t off2,
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* size_t count));
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*
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* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
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* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
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*/
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/* XXX IMPLEMENT bus_space_copy_N() XXX */
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/*
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* Bus read/write barrier methods.
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*
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* void bus_space_barrier __P((bus_space_tag_t tag,
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* bus_space_handle_t bsh, bus_size_t offset,
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* bus_size_t len, int flags));
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*
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* Note: the 680x0 does not currently require barriers, but we must
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* provide the flags to MI code.
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*/
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#define bus_space_barrier(t, h, o, l, f) \
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((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
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#define BUS_BARRIER_READ 0x01 /* force read barrier */
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#define BUS_BARRIER_WRITE 0x02 /* force write barrier */
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/*
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* Machine-dependent extensions.
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*/
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int bus_probe __P((bus_space_tag_t t, bus_space_handle_t bsh,
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bus_size_t offset, int sz));
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#endif /* _MAC68K_BUS_H_ */
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