1#- 2# Copyright (c) 2015 Roger Pau Monné <royger@FreeBSD.org> 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer. 10# 2. Redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution. 13# 14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24# SUCH DAMAGE. 25# 26# $FreeBSD$ 27# 28 29#include <sys/bus.h> 30 31INTERFACE xenmem; 32 33# 34# Default implementations of some methods. 35# 36CODE { 37 static struct resource * 38 xenmem_generic_alloc(device_t dev, device_t child, int *res_id, 39 size_t size) 40 { 41 device_t parent; 42 43 parent = device_get_parent(dev); 44 if (parent == NULL) 45 return (NULL); 46 return (XENMEM_ALLOC(parent, child, res_id, size)); 47 } 48 49 static int 50 xenmem_generic_free(device_t dev, device_t child, int res_id, 51 struct resource *res) 52 { 53 device_t parent; 54 55 parent = device_get_parent(dev); 56 if (parent == NULL) 57 return (ENXIO); 58 return (XENMEM_FREE(parent, child, res_id, res)); 59 } 60}; 61 62/** 63 * @brief Request for unused physical memory regions. 64 * 65 * @param _dev the device whose child was being probed. 66 * @param _child the child device which failed to probe. 67 * @param _res_id a pointer to the resource identifier. 68 * @param _size size of the required memory region. 69 * 70 * @returns the resource which was allocated or @c NULL if no 71 * resource could be allocated. 72 */ 73METHOD struct resource * alloc { 74 device_t _dev; 75 device_t _child; 76 int *_res_id; 77 size_t _size; 78} DEFAULT xenmem_generic_alloc; 79 80/** 81 * @brief Free physical memory regions. 82 * 83 * @param _dev the device whose child was being probed. 84 * @param _child the child device which failed to probe. 85 * @param _res_id the resource identifier. 86 * @param _res the resource. 87 * 88 * @returns 0 on success, otherwise an error code. 89 */ 90METHOD int free { 91 device_t _dev; 92 device_t _child; 93 int _res_id; 94 struct resource *_res; 95} DEFAULT xenmem_generic_free; 96