1 /* $NetBSD: io-mapping.h,v 1.13 2021/12/19 12:28:04 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _LINUX_IO_MAPPING_H_ 33 #define _LINUX_IO_MAPPING_H_ 34 35 #include <sys/types.h> 36 37 #include <sys/bus.h> 38 39 #define bus_space_io_mapping_init_wc linux_bus_space_io_mapping_init_wc 40 #define bus_space_io_mapping_create_wc linux_bus_space_io_mapping_create_wc 41 #define io_mapping_fini linux_io_mapping_fini 42 #define io_mapping_free linux_io_mapping_free 43 #define io_mapping_map_wc linux_io_mapping_map_wc 44 #define io_mapping_unmap linux_io_mapping_unmap 45 #define io_mapping_map_atomic_wc linux_io_mapping_map_atomic_wc 46 #define io_mapping_unmap_atomic linux_io_mapping_unmap_atomic 47 48 struct io_mapping { 49 bus_space_tag_t diom_bst; 50 bus_addr_t base; /* Linux API */ 51 bus_size_t size; /* Linux API */ 52 vaddr_t diom_va; 53 bool diom_atomic; 54 }; 55 56 bool bus_space_io_mapping_init_wc(bus_space_tag_t, struct io_mapping *, 57 bus_addr_t, bus_size_t); 58 void io_mapping_fini(struct io_mapping *); 59 60 struct io_mapping *bus_space_io_mapping_create_wc(bus_space_tag_t, bus_addr_t, 61 bus_size_t); 62 void io_mapping_free(struct io_mapping *); 63 64 void *io_mapping_map_wc(struct io_mapping *, bus_addr_t, bus_size_t); 65 void io_mapping_unmap(struct io_mapping *, void *, bus_size_t); 66 67 void *io_mapping_map_atomic_wc(struct io_mapping *, bus_addr_t); 68 void io_mapping_unmap_atomic(struct io_mapping *, void *); 69 70 #endif /* _LINUX_IO_MAPPING_H_ */ 71