1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2017 The FreeBSD Foundation 5 * 6 * This software was developed by Landon Fuller under sponsorship from 7 * the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 16 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 17 * redistribution must be conditioned upon including a substantially 18 * similar Disclaimer requirement for further binary redistribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 23 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 24 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 25 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 28 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGES. 31 * 32 * $FreeBSD$ 33 */ 34 35 #ifndef _BHND_EROM_BHND_EROMVAR_H_ 36 #define _BHND_EROM_BHND_EROMVAR_H_ 37 38 #include <sys/param.h> 39 40 #include "bhnd_erom.h" 41 42 /* forward declarations */ 43 struct bhnd_erom_io; 44 struct bhnd_erom_iobus; 45 46 /** @see bhnd_erom_io_map() */ 47 typedef int (bhnd_erom_io_map_t)(struct bhnd_erom_io *eio, 48 bhnd_addr_t addr, bhnd_size_t size); 49 50 /** @see bhnd_erom_io_tell() */ 51 typedef int (bhnd_erom_io_tell_t)(struct bhnd_erom_io *eio, 52 bhnd_addr_t *addr, bhnd_size_t *size); 53 54 /** @see bhnd_erom_io_read() */ 55 typedef uint32_t (bhnd_erom_io_read_t)(struct bhnd_erom_io *eio, 56 bhnd_size_t offset, u_int width); 57 58 /** @see bhnd_erom_io_fini() */ 59 typedef void (bhnd_erom_io_fini_t)(struct bhnd_erom_io *eio); 60 61 int bhnd_erom_read_chipid(struct bhnd_erom_io *eio, 62 struct bhnd_chipid *cid); 63 64 /** 65 * Abstract EROM bus I/O support. 66 */ 67 struct bhnd_erom_io { 68 bhnd_erom_io_map_t *map; /**< @see bhnd_erom_io_map() */ 69 bhnd_erom_io_tell_t *tell; /**< @see bhnd_erom_io_tell() */ 70 bhnd_erom_io_read_t *read; /**< @see bhnd_erom_io_read() */ 71 bhnd_erom_io_fini_t *fini; /**< @see bhnd_erom_io_fini(). May be NULL */ 72 }; 73 74 /** 75 * EROM bus handle/tag I/O instance state. 76 */ 77 struct bhnd_erom_iobus { 78 struct bhnd_erom_io eio; 79 bhnd_addr_t addr; /**< the address of @p bsh */ 80 bhnd_size_t size; /**< the size of @p bsh */ 81 bus_space_tag_t bst; /**< bus space tag */ 82 bus_space_handle_t bsh; /**< bus space handle mapping the full enumeration space */ 83 bool mapped; /**< if a mapping is active */ 84 bus_size_t offset; /**< the current mapped offset within bsh */ 85 bus_size_t limit; /**< the current mapped size relative to offset */ 86 }; 87 88 #endif /* _BHND_EROM_BHND_EROMVAR_H_ */ 89