/* $FreeBSD$ */ /* $NecBSD: busio.h,v 3.25.4.2.2.1 2000/06/12 03:53:08 honda Exp $ */ /* $NetBSD: bus.h,v 1.12 1997/10/01 08:25:15 fvdl Exp $ */ /* * [NetBSD for NEC PC-98 series] * Copyright (c) 1997, 1998 * NetBSD/pc98 porting staff. All rights reserved. * * [Ported for FreeBSD] * Copyright (c) 2001 * TAKAHASHI Yoshihiro. 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. */ /* * Copyright (c) 1997, 1998 * Naofumi HONDA. All rights reserved. * * This module support generic bus address relocation mechanism. * To reduce a function call overhead, we employ pascal call methods. */ #ifndef _I386_BUS_PC98_H_ #define _I386_BUS_PC98_H_ #include #include /* * Bus address and size types */ typedef u_int bus_addr_t; typedef u_int bus_size_t; #define BUS_SPACE_MAXSIZE_24BIT 0xFFFFFF #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF #define BUS_SPACE_MAXSIZE 0xFFFFFFFF #define BUS_SPACE_MAXADDR_24BIT 0xFFFFFF #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF #define BUS_SPACE_MAXADDR 0xFFFFFFFF #define BUS_SPACE_UNRESTRICTED (~0) #define BUS_SPACE_IAT_MAXSIZE 33 /* * Access methods for bus resources and address space. */ struct resource; /* * bus space tag */ #define _PASCAL_CALL (void) #define _BUS_SPACE_CALL_FUNCS_TAB(NAME,TYPE,BWN) \ NAME##_space_read_##BWN, \ NAME##_space_read_multi_##BWN, \ NAME##_space_read_region_##BWN, \ NAME##_space_write_##BWN, \ NAME##_space_write_multi_##BWN, \ NAME##_space_write_region_##BWN, \ NAME##_space_set_multi_##BWN, \ NAME##_space_set_region_##BWN, \ NAME##_space_copy_region_##BWN #define _BUS_SPACE_CALL_FUNCS_PROTO(NAME,TYPE,BWN) \ TYPE NAME##_space_read_##BWN _PASCAL_CALL; \ void NAME##_space_read_multi_##BWN _PASCAL_CALL; \ void NAME##_space_read_region_##BWN _PASCAL_CALL; \ void NAME##_space_write_##BWN _PASCAL_CALL; \ void NAME##_space_write_multi_##BWN _PASCAL_CALL; \ void NAME##_space_write_region_##BWN _PASCAL_CALL; \ void NAME##_space_set_multi_##BWN _PASCAL_CALL; \ void NAME##_space_set_region_##BWN _PASCAL_CALL; \ void NAME##_space_copy_region_##BWN _PASCAL_CALL; #define _BUS_SPACE_CALL_FUNCS(NAME,TYPE,BWN) \ TYPE (* NAME##_read_##BWN) _PASCAL_CALL; \ void (* NAME##_read_multi_##BWN) _PASCAL_CALL; \ void (* NAME##_read_region_##BWN) _PASCAL_CALL; \ void (* NAME##_write_##BWN) _PASCAL_CALL; \ void (* NAME##_write_multi_##BWN) _PASCAL_CALL; \ void (* NAME##_write_region_##BWN) _PASCAL_CALL; \ void (* NAME##_set_multi_##BWN) _PASCAL_CALL; \ void (* NAME##_set_region_##BWN) _PASCAL_CALL; \ void (* NAME##_copy_region_##BWN) _PASCAL_CALL; struct bus_space_access_methods { /* 8 bits access methods */ _BUS_SPACE_CALL_FUNCS(bs,u_int8_t,1) /* 16 bits access methods */ _BUS_SPACE_CALL_FUNCS(bs,u_int16_t,2) /* 32 bits access methods */ _BUS_SPACE_CALL_FUNCS(bs,u_int32_t,4) }; struct bus_space_tag { #define BUS_SPACE_IO 0 #define BUS_SPACE_MEM 1 u_int bs_tag; /* bus space flags */ struct bus_space_access_methods bs_da; /* direct access */ struct bus_space_access_methods bs_ra; /* relocate access */ #if 0 struct bus_space_access_methods bs_ida; /* indexed direct access */ #endif }; typedef struct bus_space_tag *bus_space_tag_t; /* * Values for the i386 bus space tag, not to be used directly by MI code. */ extern struct bus_space_tag SBUS_io_space_tag; extern struct bus_space_tag SBUS_mem_space_tag; #define I386_BUS_SPACE_IO (&SBUS_io_space_tag) #define I386_BUS_SPACE_MEM (&SBUS_mem_space_tag) /* * bus space handle */ struct bus_space_handle { bus_addr_t bsh_base; size_t bsh_sz; bus_addr_t bsh_iat[BUS_SPACE_IAT_MAXSIZE]; size_t bsh_maxiatsz; size_t bsh_iatsz; struct resource **bsh_res; size_t bsh_ressz; struct bus_space_access_methods bsh_bam; }; typedef struct bus_space_handle *bus_space_handle_t; /* * Allocate/Free bus_space_handle */ int i386_bus_space_handle_alloc(bus_space_tag_t t, bus_addr_t bpa, bus_size_t size, bus_space_handle_t *bshp); void i386_bus_space_handle_free(bus_space_tag_t t, bus_space_handle_t bsh, size_t size); /* * int bus_space_map (bus_space_tag_t t, bus_addr_t addr, * bus_size_t size, int flag, bus_space_handle_t *bshp); * * Map a region of bus space. */ int i386_memio_map(bus_space_tag_t t, bus_addr_t addr, bus_size_t size, int flag, bus_space_handle_t *bshp); #define bus_space_map(t, a, s, f, hp) \ i386_memio_map((t), (a), (s), (f), (hp)) /* * int bus_space_unmap (bus_space_tag_t t, * bus_space_handle_t bsh, bus_size_t size); * * Unmap a region of bus space. */ void i386_memio_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size); #define bus_space_unmap(t, h, s) \ i386_memio_unmap((t), (h), (s)) /* * 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 i386_memio_subregion(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp); #define bus_space_subregion(t, h, o, s, nhp) \ i386_memio_subregion((t), (h), (o), (s), (nhp)) /* * 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 i386_memio_free(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size); #define bus_space_free(t, h, s) \ i386_memio_free((t), (h), (s)) /* * Access methods for bus resources and address space. */ #define _BUS_ACCESS_METHODS_PROTO(TYPE,BWN) \ static __inline TYPE bus_space_read_##BWN \ (bus_space_tag_t, bus_space_handle_t, bus_size_t offset); \ static __inline void bus_space_read_multi_##BWN \ (bus_space_tag_t, bus_space_handle_t, \ bus_size_t, TYPE *, size_t); \ static __inline void bus_space_read_region_##BWN \ (bus_space_tag_t, bus_space_handle_t, \ bus_size_t, TYPE *, size_t); \ static __inline void bus_space_write_##BWN \ (bus_space_tag_t, bus_space_handle_t, bus_size_t, TYPE); \ static __inline void bus_space_write_multi_##BWN \ (bus_space_tag_t, bus_space_handle_t, \ bus_size_t, const TYPE *, size_t); \ static __inline void bus_space_write_region_##BWN \ (bus_space_tag_t, bus_space_handle_t, \ bus_size_t, const TYPE *, size_t); \ static __inline void bus_space_set_multi_##BWN \ (bus_space_tag_t, bus_space_handle_t, bus_size_t, TYPE, size_t);\ static __inline void bus_space_set_region_##BWN \ (bus_space_tag_t, bus_space_handle_t, bus_size_t, TYPE, size_t);\ static __inline void bus_space_copy_region_##BWN \ (bus_space_tag_t, bus_space_handle_t, bus_size_t, \ bus_space_handle_t, bus_size_t, size_t); _BUS_ACCESS_METHODS_PROTO(u_int8_t,1) _BUS_ACCESS_METHODS_PROTO(u_int16_t,2) _BUS_ACCESS_METHODS_PROTO(u_int32_t,4) /* * read methods */ #define _BUS_SPACE_READ(TYPE,BWN) \ static __inline TYPE \ bus_space_read_##BWN (tag, bsh, offset) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ { \ register TYPE result; \ \ __asm __volatile("call *%2" \ :"=a" (result), \ "=d" (offset) \ :"o" (bsh->bsh_bam.bs_read_##BWN), \ "b" (bsh), \ "1" (offset) \ ); \ \ return result; \ } _BUS_SPACE_READ(u_int8_t,1) _BUS_SPACE_READ(u_int16_t,2) _BUS_SPACE_READ(u_int32_t,4) /* * write methods */ #define _BUS_SPACE_WRITE(TYPE,BWN) \ static __inline void \ bus_space_write_##BWN (tag, bsh, offset, val) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ TYPE val; \ { \ \ __asm __volatile("call *%1" \ :"=d" (offset) \ :"o" (bsh->bsh_bam.bs_write_##BWN), \ "a" (val), \ "b" (bsh), \ "0" (offset) \ ); \ } _BUS_SPACE_WRITE(u_int8_t,1) _BUS_SPACE_WRITE(u_int16_t,2) _BUS_SPACE_WRITE(u_int32_t,4) /* * multi read */ #define _BUS_SPACE_READ_MULTI(TYPE,BWN) \ static __inline void \ bus_space_read_multi_##BWN (tag, bsh, offset, buf, cnt) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ TYPE *buf; \ size_t cnt; \ { \ \ __asm __volatile("call *%3" \ :"=c" (cnt), \ "=d" (offset), \ "=D" (buf) \ :"o" (bsh->bsh_bam.bs_read_multi_##BWN), \ "b" (bsh), \ "0" (cnt), \ "1" (offset), \ "2" (buf) \ :"memory"); \ } _BUS_SPACE_READ_MULTI(u_int8_t,1) _BUS_SPACE_READ_MULTI(u_int16_t,2) _BUS_SPACE_READ_MULTI(u_int32_t,4) /* * multi write */ #define _BUS_SPACE_WRITE_MULTI(TYPE,BWN) \ static __inline void \ bus_space_write_multi_##BWN (tag, bsh, offset, buf, cnt) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ const TYPE *buf; \ size_t cnt; \ { \ \ __asm __volatile("call *%3" \ :"=c" (cnt), \ "=d" (offset), \ "=S" (buf) \ :"o" (bsh->bsh_bam.bs_write_multi_##BWN), \ "b" (bsh), \ "0" (cnt), \ "1" (offset), \ "2" (buf) \ ); \ } _BUS_SPACE_WRITE_MULTI(u_int8_t,1) _BUS_SPACE_WRITE_MULTI(u_int16_t,2) _BUS_SPACE_WRITE_MULTI(u_int32_t,4) /* * region read */ #define _BUS_SPACE_READ_REGION(TYPE,BWN) \ static __inline void \ bus_space_read_region_##BWN (tag, bsh, offset, buf, cnt) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ TYPE *buf; \ size_t cnt; \ { \ \ __asm __volatile("call *%3" \ :"=c" (cnt), \ "=d" (offset), \ "=D" (buf) \ :"o" (bsh->bsh_bam.bs_read_region_##BWN), \ "b" (bsh), \ "0" (cnt), \ "1" (offset), \ "2" (buf) \ :"memory"); \ } _BUS_SPACE_READ_REGION(u_int8_t,1) _BUS_SPACE_READ_REGION(u_int16_t,2) _BUS_SPACE_READ_REGION(u_int32_t,4) /* * region write */ #define _BUS_SPACE_WRITE_REGION(TYPE,BWN) \ static __inline void \ bus_space_write_region_##BWN (tag, bsh, offset, buf, cnt) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ const TYPE *buf; \ size_t cnt; \ { \ \ __asm __volatile("call *%3" \ :"=c" (cnt), \ "=d" (offset), \ "=S" (buf) \ :"o" (bsh->bsh_bam.bs_write_region_##BWN), \ "b" (bsh), \ "0" (cnt), \ "1" (offset), \ "2" (buf) \ ); \ } _BUS_SPACE_WRITE_REGION(u_int8_t,1) _BUS_SPACE_WRITE_REGION(u_int16_t,2) _BUS_SPACE_WRITE_REGION(u_int32_t,4) /* * multi set */ #define _BUS_SPACE_SET_MULTI(TYPE,BWN) \ static __inline void \ bus_space_set_multi_##BWN (tag, bsh, offset, val, cnt) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ TYPE val; \ size_t cnt; \ { \ \ __asm __volatile("call *%2" \ :"=c" (cnt), \ "=d" (offset) \ :"o" (bsh->bsh_bam.bs_set_multi_##BWN), \ "a" (val), \ "b" (bsh), \ "0" (cnt), \ "1" (offset) \ ); \ } _BUS_SPACE_SET_MULTI(u_int8_t,1) _BUS_SPACE_SET_MULTI(u_int16_t,2) _BUS_SPACE_SET_MULTI(u_int32_t,4) /* * region set */ #define _BUS_SPACE_SET_REGION(TYPE,BWN) \ static __inline void \ bus_space_set_region_##BWN (tag, bsh, offset, val, cnt) \ bus_space_tag_t tag; \ bus_space_handle_t bsh; \ bus_size_t offset; \ TYPE val; \ size_t cnt; \ { \ \ __asm __volatile("call *%2" \ :"=c" (cnt), \ "=d" (offset) \ :"o" (bsh->bsh_bam.bs_set_region_##BWN), \ "a" (val), \ "b" (bsh), \ "0" (cnt), \ "1" (offset) \ ); \ } _BUS_SPACE_SET_REGION(u_int8_t,1) _BUS_SPACE_SET_REGION(u_int16_t,2) _BUS_SPACE_SET_REGION(u_int32_t,4) /* * copy */ #define _BUS_SPACE_COPY_REGION(BWN) \ static __inline void \ bus_space_copy_region_##BWN (tag, sbsh, src, dbsh, dst, cnt) \ bus_space_tag_t tag; \ bus_space_handle_t sbsh; \ bus_size_t src; \ bus_space_handle_t dbsh; \ bus_size_t dst; \ size_t cnt; \ { \ \ if (dbsh->bsh_bam.bs_copy_region_1 != sbsh->bsh_bam.bs_copy_region_1) \ panic("bus_space_copy_region: funcs mismatch (ENOSUPPORT)");\ \ __asm __volatile("call *%3" \ :"=c" (cnt), \ "=S" (src), \ "=D" (dst) \ :"o" (dbsh->bsh_bam.bs_copy_region_##BWN), \ "a" (sbsh), \ "b" (dbsh), \ "0" (cnt), \ "1" (src), \ "2" (dst) \ ); \ } _BUS_SPACE_COPY_REGION(1) _BUS_SPACE_COPY_REGION(2) _BUS_SPACE_COPY_REGION(4) /* * 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 that BUS_SPACE_BARRIER_WRITE doesn't do anything other than * prevent reordering by the compiler; all Intel x86 processors currently * retire operations outside the CPU in program order. */ #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ static __inline void bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags) { if (flags & BUS_SPACE_BARRIER_READ) __asm __volatile("lock; addl $0,0(%%esp)" : : : "memory"); else __asm __volatile("" : : : "memory"); } #endif /* _I386_BUS_PC98_H_ */