NetBSD-5.0.2/sys/arch/news68k/include/bus.h
/* $NetBSD: bus.h,v 1.8 2008/04/28 20:23:30 martin Exp $ */
/*-
* Copyright (c) 1996, 1997, 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) 1997 Scott Reynolds. All rights reserved.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/* bus_space(9) functions for news68k. Just taken from hp300. */
#ifndef _NEWS68K_BUS_H_
#define _NEWS68K_BUS_H_
/*
* Values for the news68k bus space tag, not to be used directly by MI code.
*/
#define NEWS68K_BUS_SPACE_INTIO 0 /* space is intio space */
#define NEWS68K_BUS_SPACE_EIO 1 /* space is eio space */
/*
* Bus address and size types
*/
typedef u_long bus_addr_t;
typedef u_long bus_size_t;
/*
* Access methods for bus resources and address space.
*/
typedef int bus_space_tag_t;
typedef u_long bus_space_handle_t;
/*
* int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
* bus_size_t size, int flags, bus_space_handle_t *bshp);
*
* Map a region of bus space.
*/
#define BUS_SPACE_MAP_CACHEABLE 0x01
#define BUS_SPACE_MAP_LINEAR 0x02
#define BUS_SPACE_MAP_PREFETCHABLE 0x04
int bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t,
int, bus_space_handle_t *);
/*
* void bus_space_unmap(bus_space_tag_t t,
* bus_space_handle_t bsh, bus_size_t size);
*
* Unmap a region of bus space.
*/
void bus_space_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t);
/*
* int bus_space_subregion(bus_space_tag_t t,
* bus_space_handle_t bsh, bus_size_t offset, bus_size_t size,
* bus_space_handle_t *nbshp);
*
* Get a new handle for a subregion of an already-mapped area of bus space.
*/
int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp);
/*
* int bus_space_alloc(bus_space_tag_t t, bus_addr_t, rstart,
* bus_addr_t rend, bus_size_t size, bus_size_t align,
* bus_size_t boundary, int flags, bus_addr_t *addrp,
* bus_space_handle_t *bshp);
*
* Allocate a region of bus space.
*/
int bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart,
bus_addr_t rend, bus_size_t size, bus_size_t align,
bus_size_t boundary, int cacheable, bus_addr_t *addrp,
bus_space_handle_t *bshp);
/*
* int bus_space_free(bus_space_tag_t t,
* bus_space_handle_t bsh, bus_size_t size);
*
* Free a region of bus space.
*/
void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t size);
/*
* int news68k_bus_space_probe(bus_space_tag_t t,
* bus_space_handle_t bsh, bus_size_t offset, int sz);
*
* Probe the bus at t/bsh/offset, using sz as the size of the load.
*
* This is a machine-dependent extension, and is not to be used by
* machine-independent code.
*/
int news68k_bus_space_probe(bus_space_tag_t t,
bus_space_handle_t bsh, bus_size_t offset, int sz);
/*
* uintN_t bus_space_read_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset);
*
* Read a 1, 2, 4, or 8 byte quantity from bus space
* described by tag/handle/offset.
*/
#define bus_space_read_1(t, h, o) \
((void) t, (*(volatile uint8_t *)((h) + (o))))
#define bus_space_read_2(t, h, o) \
((void) t, (*(volatile uint16_t *)((h) + (o))))
#define bus_space_read_4(t, h, o) \
((void) t, (*(volatile uint32_t *)((h) + (o))))
#if 0 /* Cause a link error for bus_space_read_8 */
#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
#endif
/*
* void bus_space_read_multi_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* uintN_t *addr, size_t count);
*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle/offset and copy into buffer provided.
*/
#define bus_space_read_multi_1(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movb %%a0@,%%a1@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_read_multi_2(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movw %%a0@,%%a1@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_read_multi_4(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movl %%a0@,%%a1@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#if 0 /* Cause a link error for bus_space_read_multi_8 */
#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
#endif
/*
* void bus_space_read_region_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* uintN_t *addr, size_t count);
*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle and starting at `offset' and copy into
* buffer provided.
*/
#define bus_space_read_region_1(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movb %%a0@+,%%a1@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_read_region_2(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movw %%a0@+,%%a1@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_read_region_4(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movl %%a0@+,%%a1@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#if 0 /* Cause a link error for bus_space_read_region_8 */
#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
#endif
/*
* void bus_space_write_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* uintN_t value);
*
* Write the 1, 2, 4, or 8 byte value `value' to bus space
* described by tag/handle/offset.
*/
#define bus_space_write_1(t, h, o, v) \
((void) t, ((void)(*(volatile uint8_t *)((h) + (o)) = (v))))
#define bus_space_write_2(t, h, o, v) \
((void) t, ((void)(*(volatile uint16_t *)((h) + (o)) = (v))))
#define bus_space_write_4(t, h, o, v) \
((void) t, ((void)(*(volatile uint32_t *)((h) + (o)) = (v))))
#if 0 /* Cause a link error for bus_space_write_8 */
#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
#endif
/*
* void bus_space_write_multi_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* const uintN_t *addr, size_t count);
*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
* provided to bus space described by tag/handle/offset.
*/
#define bus_space_write_multi_1(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movb %%a1@+,%%a0@ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_write_multi_2(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movw %%a1@+,%%a0@ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_write_multi_4(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movl %%a1@+,%%a0@ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#if 0 /* Cause a link error for bus_space_write_8 */
#define bus_space_write_multi_8(t, h, o, a, c) \
!!! bus_space_write_multi_8 unimplimented !!!
#endif
/*
* void bus_space_write_region_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* const uintN_t *addr, size_t count);
*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
* to bus space described by tag/handle starting at `offset'.
*/
#define bus_space_write_region_1(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movb %%a1@+,%%a0@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_write_region_2(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movw %%a1@+,%%a0@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#define bus_space_write_region_4(t, h, o, a, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%a1 ; \
movl %2,%%d0 ; \
1: movl %%a1@+,%%a0@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (a), "g" (c) : \
"%a0","%a1","%d0"); \
} while (0)
#if 0 /* Cause a link error for bus_space_write_region_8 */
#define bus_space_write_region_8 \
!!! bus_space_write_region_8 unimplemented !!!
#endif
/*
* void bus_space_set_multi_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, uintN_t val,
* size_t count);
*
* Write the 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle/offset `count' times.
*/
#define bus_space_set_multi_1(t, h, o, val, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%d1 ; \
movl %2,%%d0 ; \
1: movb %%d1,%%a0@ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (val), "g" (c) : \
"%a0","%d0","%d1"); \
} while (0)
#define bus_space_set_multi_2(t, h, o, val, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%d1 ; \
movl %2,%%d0 ; \
1: movw %%d1,%%a0@ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (val), "g" (c) : \
"%a0","%d0","%d1"); \
} while (0)
#define bus_space_set_multi_4(t, h, o, val, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%d1 ; \
movl %2,%%d0 ; \
1: movl %%d1,%%a0@ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (val), "g" (c) : \
"%a0","%d0","%d1"); \
} while (0)
#if 0 /* Cause a link error for bus_space_set_multi_8 */
#define bus_space_set_multi_8 \
!!! bus_space_set_multi_8 unimplemented !!!
#endif
/*
* void bus_space_set_region_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, uintN_t val,
* size_t count);
*
* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle starting at `offset'.
*/
#define bus_space_set_region_1(t, h, o, val, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%d1 ; \
movl %2,%%d0 ; \
1: movb %%d1,%%a0@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (val), "g" (c) : \
"%a0","%d0","%d1"); \
} while (0)
#define bus_space_set_region_2(t, h, o, val, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%d1 ; \
movl %2,%%d0 ; \
1: movw %%d1,%%a0@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (val), "g" (c) : \
"%a0","%d0","%d1"); \
} while (0)
#define bus_space_set_region_4(t, h, o, val, c) do { \
(void) t; \
__asm volatile (" \
movl %0,%%a0 ; \
movl %1,%%d1 ; \
movl %2,%%d0 ; \
1: movl %%d1,%%a0@+ ; \
subql #1,%%d0 ; \
jne 1b" : \
: \
"r" ((h) + (o)), "g" (val), "g" (c) : \
"%a0","%d0","%d1"); \
} while (0)
#if 0 /* Cause a link error for bus_space_set_region_8 */
#define bus_space_set_region_8 \
!!! bus_space_set_region_8 unimplemented !!!
#endif
/*
* void bus_space_copy_region_N(bus_space_tag_t tag,
* bus_space_handle_t bsh1, bus_size_t off1,
* bus_space_handle_t bsh2, bus_size_t off2,
* bus_size_t count);
*
* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
*/
#define __NEWS68K_copy_region_N(BYTES) \
static __inline void __CONCAT(bus_space_copy_region_,BYTES) \
(bus_space_tag_t, \
bus_space_handle_t bsh1, bus_size_t off1, \
bus_space_handle_t bsh2, bus_size_t off2, \
bus_size_t count); \
\
static __inline void \
__CONCAT(bus_space_copy_region_,BYTES)(bus_space_tag_t t, \
bus_space_handle_t h1, bus_space_handle_t h2, \
bus_size_t o1, bus_size_t o2, bus_size_t c) \
{ \
bus_size_t o; \
\
if ((h1 + o1) >= (h2 + o2)) { \
/* src after dest: copy forward */ \
for (o = 0; c != 0; c--, o += BYTES) \
__CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
__CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
} else { \
/* dest after src: copy backwards */ \
for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \
__CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
__CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
} \
}
__NEWS68K_copy_region_N(1)
__NEWS68K_copy_region_N(2)
__NEWS68K_copy_region_N(4)
#if 0 /* Cause a link error for bus_space_copy_region_8 */
#define bus_space_copy_region_8 \
!!! bus_space_copy_region_8 unimplemented !!!
#endif
#undef __NEWS68K_copy_region_N
/*
* Bus read/write barrier methods.
*
* void bus_space_barrier(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* bus_size_t len, int flags);
*
* Note: the 680x0 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 */
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
#endif /* _NEWS68K_BUS_H_ */