1 /* $NetBSD: ioport.h,v 1.8 2021/12/19 12:37:07 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_IOPORT_H_ 33 #define _LINUX_IOPORT_H_ 34 35 #include <sys/types.h> 36 #include <sys/bus.h> 37 38 #include <linux/types.h> 39 40 #define IORESOURCE_IO __BIT(0) 41 #define IORESOURCE_MEM __BIT(1) 42 #define IORESOURCE_IRQ __BIT(2) 43 #define IORESOURCE_UNSET __BIT(3) 44 45 struct resource { 46 bus_addr_t start; 47 bus_addr_t end; /* WARNING: Inclusive! */ 48 const char *name; 49 unsigned int flags; 50 bus_space_tag_t r_bst; /* This milk is not organic. */ 51 bus_space_handle_t r_bsh; 52 }; 53 54 #define DEFINE_RES_MEM(START, SIZE) \ 55 { .start = (START), .end = (START) + ((SIZE) - 1) } 56 57 static inline resource_size_t 58 resource_size(struct resource *resource) 59 { 60 return resource->end - resource->start + 1; 61 } 62 63 static inline bool 64 resource_contains(struct resource *r1, struct resource *r2) 65 { 66 if (r1->r_bst != r2->r_bst) 67 return false; 68 return r1->start <= r2->start && r2->end <= r1->end; 69 } 70 71 static inline void 72 release_resource(struct resource *resource) 73 { 74 bus_space_free(resource->r_bst, resource->r_bsh, 75 resource_size(resource)); 76 } 77 78 #endif /* _LINUX_IOPORT_H_ */ 79