/** * @file * * @ingroup rtems_bsd_machine * * @brief TODO. * * File origin from FreeBSD 'sys/amd64/include/bus.h'. */ /*- * Copyright (c) 2009, 2010 embedded brains GmbH. All rights reserved. * * embedded brains GmbH * Obere Lagerstr. 30 * 82178 Puchheim * Germany * * * Copyright (c) KATO Takenori, 1999. * * All rights reserved. Unpublished rights reserved under the copyright * laws of Japan. * * 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 as * the first lines of this file unmodified. * 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) 1996, 1997 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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) 1996 Charles M. Hannum. All rights reserved. * Copyright (c) 1996 Christopher G. Demetriou. 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 _RTEMS_BSD_MACHINE_BUS_H_ #define _RTEMS_BSD_MACHINE_BUS_H_ #ifndef _RTEMS_BSD_MACHINE_RTEMS_BSD_CONFIG_H_ #error "the header file must be included first" #endif /* * Bus address alignment. */ #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) /* * Bus address maxima. */ #define BUS_SPACE_MAXADDR_24BIT 0xffffffU #define BUS_SPACE_MAXADDR_32BIT 0xffffffffU #define BUS_SPACE_MAXADDR 0xffffffffU #define BUS_SPACE_MAXSIZE_24BIT 0xffffffU #define BUS_SPACE_MAXSIZE_32BIT 0xffffffffU #define BUS_SPACE_MAXSIZE 0xffffffffU /* * Bus access. */ #define BUS_SPACE_UNRESTRICTED (~0U) /* * Bus read/write barrier method. */ #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ /* * Bus address and size types */ typedef unsigned int bus_addr_t; typedef unsigned int bus_size_t; /* * Access methods for bus resources and address space. */ typedef int bus_space_tag_t; typedef unsigned int bus_space_handle_t; /* * Map a region of device bus space into CPU virtual address space. */ static __inline int bus_space_map(bus_space_tag_t t __unused, bus_addr_t addr, bus_size_t size __unused, int flags __unused, bus_space_handle_t *bshp) { *bshp = addr; return (0); } /* * Unmap a region of device bus space. */ static __inline void bus_space_unmap(bus_space_tag_t bst __unused, bus_space_handle_t bsh __unused, bus_size_t size __unused) { /* Do nothing */ } /* * Get a new handle for a subregion of an already-mapped area of bus space. */ static __inline int bus_space_subregion(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t ofs, bus_size_t size, bus_space_handle_t *nbshp) { *nbshp = bsh + ofs; return (0); } /* * Allocate a region of memory that is accessible to devices in bus space. */ int bus_space_alloc(bus_space_tag_t bst __unused, 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); /* * Free a region of bus space accessible memory. */ void bus_space_free(bus_space_tag_t bst __unused, bus_space_handle_t bsh, bus_size_t size); #if defined(__i386__) #include #elif defined(__ppc__) #include #else #error "Bus space routines not implemented for this architecture!!" #endif #include #endif /* _RTEMS_BSD_MACHINE_BUS_H_ */