1#- 2# Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org> 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions 6# are met: 7# 1. Redistributions of source code must retain the above copyright 8# notice, this list of conditions and the following disclaimer. 9# 2. Redistributions in binary form must reproduce the above copyright 10# notice, this list of conditions and the following disclaimer in the 11# documentation and/or other materials provided with the distribution. 12# 13# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23# SUCH DAMAGE. 24# 25# 26 27INTERFACE nvmem; 28 29# 30# Default implementations of some methods. 31# 32CODE { 33 static int 34 null_nvmem_read(device_t dev __unused, uint32_t offset __unused, uint32_t size __unused, uint8_t *buffer __unused) 35 { 36 37 return (ENXIO); 38 } 39 40 static int 41 null_nvmem_write(device_t dev __unused, uint32_t offset __unused, uint32_t size __unused, uint8_t *buffer __unused) 42 { 43 44 return (ENXIO); 45 } 46}; 47 48# 49# Read 50# 51METHOD int read { 52 device_t dev; 53 uint32_t offset; 54 uint32_t size; 55 uint8_t *buffer; 56} DEFAULT null_nvmem_read; 57 58# 59# Write 60# 61METHOD int write { 62 device_t dev; 63 uint32_t offset; 64 uint32_t size; 65 uint8_t *buffer; 66} DEFAULT null_nvmem_write; 67