/* $NetBSD: bus_space.h,v 1.18 2023/01/27 20:03:02 tsutsui 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.
*/
/*
* Lifted from the Next68k port.
* Modified for mvme68k by Steve Woodford.
*
* TODO: Support for VMEbus...
* (Do any existing VME card drivers use bus_space_* ?)
*/
#ifndef _MVME68K_BUS_SPACE_H_
#define _MVME68K_BUS_SPACE_H_
/*
* Addresses (in bus space).
*/
typedef u_long bus_addr_t;
typedef u_long bus_size_t;
#define PRIxBUSADDR "lx"
#define PRIxBUSSIZE "lx"
#define PRIuBUSSIZE "lu"
/*
* Access methods for bus resources and address space.
*/
struct mvme68k_bus_space_tag;
typedef struct mvme68k_bus_space_tag *bus_space_tag_t;
typedef u_long bus_space_handle_t;
#define PRIxBSH "lx"
struct mvme68k_bus_space_tag {
void *bs_cookie;
int (*bs_map)(void *, bus_addr_t, bus_size_t,
int, bus_space_handle_t *);
void (*bs_unmap)(void *, bus_space_handle_t, bus_size_t);
int (*bs_peek_1)(void *, bus_space_handle_t,
bus_size_t, uint8_t *);
int (*bs_peek_2)(void *, bus_space_handle_t,
bus_size_t, uint16_t *);
int (*bs_peek_4)(void *, bus_space_handle_t,
bus_size_t, uint32_t *);
#if 0
int (*bs_peek_8)(void *, bus_space_handle_t,
bus_size_t, uint64_t *);
#endif
int (*bs_poke_1)(void *, bus_space_handle_t,
bus_size_t, uint8_t);
int (*bs_poke_2)(void *, bus_space_handle_t,
bus_size_t, uint16_t);
int (*bs_poke_4)(void *, bus_space_handle_t,
bus_size_t, uint32_t);
#if 0
int (*bs_poke_8)(void *, bus_space_handle_t,
bus_size_t, uint64_t);
#endif
};
/*
* 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(tag, offset, size, flags, handlep) \
(*((tag)->bs_map))((tag)->bs_cookie, (offset), (size), (flags), (handlep))
/*
* Possible values for the 'flags' parameter of bus_space_map()
*/
#define BUS_SPACE_MAP_CACHEABLE 0x01
#define BUS_SPACE_MAP_LINEAR 0x02
#define BUS_SPACE_MAP_PREFETCHABLE 0x04
/*
* void bus_space_unmap(bus_space_tag_t t,
* bus_space_handle_t bsh, bus_size_t size);
*
* Unmap a region of bus space.
*/
#define bus_space_unmap(tag, handle, size) \
(*((tag)->bs_unmap))((tag)->bs_cookie, (handle), (size))
/*
* int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t h
* bus_addr_t offset, bus_size_t size, bus_space_handle_t *newh);
*
* Allocate a sub-region of an existing map
*/
#define bus_space_subregion(t, h, o, s, hp) \
((*(hp)=(h)+(o)), 0)
/*
* Allocation and deallocation operations.
*/
#define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \
(-1)
#define bus_space_free(t, h, s)
/*
* int bus_space_peek_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, uintN_t *valuep);
*
* Cautiously read 1, 2, 4 or 8 byte quantity from bus space described
* by tag/handle/offset.
* If no hardware responds to the read access, the function returns a
* non-zero value. Otherwise the value read is placed in `valuep'.
*/
#define bus_space_peek_1(t, h, o, vp) \
(*((t)->bs_peek_1))((t)->bs_cookie, (h), (o), (vp))
#define bus_space_peek_2(t, h, o, vp) \
(*((t)->bs_peek_2))((t)->bs_cookie, (h), (o), (vp))
#define bus_space_peek_4(t, h, o, vp) \
(*((t)->bs_peek_4))((t)->bs_cookie, (h), (o), (vp))
/*
* int bus_space_poke_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, uintN_t value);
*
* Cautiously write 1, 2, 4 or 8 byte quantity to bus space described
* by tag/handle/offset.
* If no hardware responds to the write access, the function returns a
* non-zero value.
*/
#define bus_space_poke_1(t, h, o, v) \
(*((t)->bs_poke_1))((t)->bs_cookie, (h), (o), (v))
#define bus_space_poke_2(t, h, o, v) \
(*((t)->bs_poke_2))((t)->bs_cookie, (h), (o), (v))
#define bus_space_poke_4(t, h, o, v) \
(*((t)->bs_poke_4))((t)->bs_cookie, (h), (o), (v))
/*
* 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) \
(*((volatile uint8_t *)(intptr_t)((h) + (o))))
#define bus_space_read_2(t,h,o) \
(*((volatile uint16_t *)(intptr_t)((h) + (o))))
#define bus_space_read_4(t,h,o) \
(*((volatile uint32_t *)(intptr_t)((h) + (o))))
/*
* 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","memory"); \
} 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","memory"); \
} 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","memory"); \
} while (0);
/*
* 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","memory"); \
} 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","memory"); \
} 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","memory"); \
} while (0);
/*
* 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) \
do { \
*((volatile uint8_t *)(intptr_t)((h) + (o))) = (v); \
} while (/*CONSTCOND*/0)
#define bus_space_write_2(t,h,o,v) \
do { \
*((volatile uint16_t *)(intptr_t)((h) + (o))) = (v); \
} while (/*CONSTCOND*/0)
#define bus_space_write_4(t,h,o,v) \
do { \
*((volatile uint32_t *)(intptr_t)((h) + (o))) = (v); \
} while (/*CONSTCOND*/0)
/*
* 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);
/*
* 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);
/*
* 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);
/*
* 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);
/*
* void bus_space_copy_N(bus_space_tag_t tag,
* bus_space_handle_t bsh1, bus_size_t off1,
* bus_space_handle_t bsh2, bus_size_t off2,
* 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 __MVME68K_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_size_t o1, \
bus_space_handle_t h2, \
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)); \
} \
}
__MVME68K_copy_region_N(1)
__MVME68K_copy_region_N(2)
__MVME68K_copy_region_N(4)
#undef __MVME68K_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)
#ifdef _MVME68K_BUS_SPACE_PRIVATE
extern int _bus_space_map(void *, bus_addr_t, bus_size_t,
int, bus_space_handle_t *);
extern void _bus_space_unmap(void *, bus_space_handle_t, bus_size_t);
extern int _bus_space_peek_1(void *, bus_space_handle_t,
bus_size_t, uint8_t *);
extern int _bus_space_peek_2(void *, bus_space_handle_t,
bus_size_t, uint16_t *);
extern int _bus_space_peek_4(void *, bus_space_handle_t,
bus_size_t, uint32_t *);
extern int _bus_space_poke_1(void *, bus_space_handle_t, bus_size_t, uint8_t);
extern int _bus_space_poke_2(void *, bus_space_handle_t, bus_size_t, uint16_t);
extern int _bus_space_poke_4(void *, bus_space_handle_t, bus_size_t, uint32_t);
#endif /* _MVME68K_BUS_SPACE_PRIVATE */
#endif /* _MVME68K_BUS_SPACE_H_ */