/* $NetBSD: bus_space.h,v 1.2 2014/03/18 18:20:41 riastradh 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. * Modified for evbcf by Steve Woodford. */ #ifndef _EVBCF_BUS_SPACE_H_ #define _EVBCF_BUS_SPACE_H_ /* * Addresses (in bus space). */ typedef u_long bus_addr_t; typedef u_long bus_size_t; /* * 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; 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)) #if 0 /* Cause a link error for bus_space_peek_8 */ #define bus_space_peek_8(t, h, o, vp) \ (*((t)->bs_peek_8))((t)->bs_cookie, (h), (o), (vp)) #endif /* * 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)) #if 0 /* Cause a link error for bus_space_poke_8 */ #define bus_space_poke_8(t, h, o, v) \ (*((t)->bs_poke_8))((t)->bs_cookie, (h), (o), (v)) #endif /* * 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"); \ } 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) \ 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); #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_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 __COLDFIRE_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)); \ } \ } __COLDFIRE_copy_region_N(1) __COLDFIRE_copy_region_N(2) __COLDFIRE_copy_region_N(4) #if 0 /* Cause a link error for bus_space_copy_8 */ #define bus_space_copy_8 \ !!! bus_space_copy_8 unimplemented !!! #endif #undef __COLDFIRE_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: Coldfire 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 _COLDFIRE_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 /* _COLDFIRE_BUS_SPACE_PRIVATE */ #endif /* _EVBCF_BUS_SPACE_H_ */