/* $OpenBSD: bus.h,v 1.4 1999/11/09 04:13:54 rahnds Exp $ */ /* * Copyright (c) 1997 Per Fogelstrom. All rights reserved. * Copyright (c) 1996 Niklas Hallqvist. 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. 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. */ #ifndef _MACHINE_BUS_H_ #define _MACHINE_BUS_H_ #include #ifdef __STDC__ #define CAT(a,b) a##b #define CAT3(a,b,c) a##b##c #else #define CAT(a,b) a/**/b #define CAT3(a,b,c) a/**/b/**/c #endif /* * Bus access types. */ typedef u_int32_t bus_addr_t; typedef u_int32_t bus_size_t; typedef u_int32_t bus_space_handle_t; typedef struct ppc_bus_space *bus_space_tag_t; struct ppc_bus_space { u_int32_t bus_base; u_int8_t bus_reverse; /* Reverse bytes */ }; #define POWERPC_BUS_TAG_BASE(x) ((x)->bus_base) extern struct ppc_bus_space ppc_isa_io, ppc_isa_mem; /* * Access methods for bus resources */ int bus_space_map __P((bus_space_tag_t t, bus_addr_t addr, bus_size_t size, int cacheable, bus_space_handle_t *bshp)); void bus_space_unmap __P((bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)); int bus_space_subregion __P((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_read(n,m) \ static __inline CAT3(u_int,m,_t) \ CAT(bus_space_read_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ bus_addr_t ba) \ { \ if(bst->bus_reverse) \ return CAT3(in,m,rb)((volatile CAT3(u_int,m,_t) *)(bsh + (ba))); \ else \ return CAT(in,m)((volatile CAT3(u_int,m,_t) *)(bsh + (ba))); \ } bus_space_read(1,8) bus_space_read(2,16) bus_space_read(4,32) #define bus_space_read_8 !!! bus_space_read_8 unimplemented !!! #define bus_space_write(n,m) \ static __inline void \ CAT(bus_space_write_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ bus_addr_t ba, CAT3(u_int,m,_t) x) \ { \ if(bst->bus_reverse) \ CAT3(out,m,rb)((volatile CAT3(u_int,m,_t) *)(bsh + (ba)), x); \ else \ CAT(out,m)((volatile CAT3(u_int,m,_t) *)(bsh + (ba)), x); \ } bus_space_write(1,8) bus_space_write(2,16) bus_space_write(4,32) #define bus_space_write_8 !!! bus_space_write_8 unimplemented !!! #define bus_space_read_multi(n, m) \ static __inline void \ CAT(bus_space_read_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ bus_size_t ba, CAT3(u_int,m,_t) *buf, bus_size_t cnt) \ { \ while (cnt--) \ *buf++ = CAT(bus_space_read_,n)(bst, bsh, ba); \ } bus_space_read_multi(1,8) bus_space_read_multi(2,16) bus_space_read_multi(4,32) #define bus_space_read_multi_8 !!! bus_space_read_multi_8 not implemented !!! #define bus_space_write_multi_8 !!! bus_space_write_multi_8 not implemented !!! #define bus_space_write_multi(n, m) \ static __inline void \ CAT(bus_space_write_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ bus_size_t ba, const CAT3(u_int,m,_t) *buf, bus_size_t cnt) \ { \ while (cnt--) \ CAT(bus_space_write_,n)(bst, bsh, ba, *buf++); \ } bus_space_write_multi(1,8) bus_space_write_multi(2,16) bus_space_write_multi(4,32) #define bus_space_write_multi_8 !!! bus_space_write_multi_8 not implemented !!! /* These are OpenBSD extensions to the general NetBSD bus interface. */ void bus_space_read_raw_multi_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, u_int8_t *dst, bus_size_t size); void bus_space_read_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, u_int16_t *dst, bus_size_t size); void bus_space_read_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, u_int32_t *dst, bus_size_t size); void bus_space_write_raw_multi_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, const u_int8_t *src, bus_size_t size); void bus_space_write_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, const u_int16_t *src, bus_size_t size); void bus_space_write_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t ba, const u_int32_t *src, bus_size_t size); #define bus_space_read_raw_multi_8 \ !!! bus_space_read_raw_multi_8 not implemented !!! #define bus_space_write_raw_multi_8 \ !!! bus_space_write_raw_multi_8 not implemented !!! /* XXX placeholders */ typedef void *bus_dma_tag_t; typedef void *bus_dmamap_t; #endif /* _MACHINE_BUS_H_ */