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xenmem_if.m
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Editing: xenmem_if.m
#- # Copyright (c) 2015 Roger Pau Monné <royger@FreeBSD.org> # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # $FreeBSD$ # #include <sys/bus.h> INTERFACE xenmem; # # Default implementations of some methods. # CODE { static struct resource * xenmem_generic_alloc(device_t dev, device_t child, int *res_id, size_t size) { device_t parent; parent = device_get_parent(dev); if (parent == NULL) return (NULL); return (XENMEM_ALLOC(parent, child, res_id, size)); } static int xenmem_generic_free(device_t dev, device_t child, int res_id, struct resource *res) { device_t parent; parent = device_get_parent(dev); if (parent == NULL) return (ENXIO); return (XENMEM_FREE(parent, child, res_id, res)); } }; /** * @brief Request for unused physical memory regions. * * @param _dev the device whose child was being probed. * @param _child the child device which failed to probe. * @param _res_id a pointer to the resource identifier. * @param _size size of the required memory region. * * @returns the resource which was allocated or @c NULL if no * resource could be allocated. */ METHOD struct resource * alloc { device_t _dev; device_t _child; int *_res_id; size_t _size; } DEFAULT xenmem_generic_alloc; /** * @brief Free physical memory regions. * * @param _dev the device whose child was being probed. * @param _child the child device which failed to probe. * @param _res_id the resource identifier. * @param _res the resource. * * @returns 0 on success, otherwise an error code. */ METHOD int free { device_t _dev; device_t _child; int _res_id; struct resource *_res; } DEFAULT xenmem_generic_free;
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