85b996c375
This includes stub domains support, but it should be considered experimental at this time. Stub domains hangs with serial ports, or more more than one virual disk (multiple virtual ethernet have not been tested).
110 lines
4.4 KiB
C
110 lines
4.4 KiB
C
$NetBSD: patch-tools_include_xen-sys_NetBSD_gntdev.h,v 1.1 2017/03/30 09:15:10 bouyer Exp $
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--- tools/include/xen-sys/NetBSD/gntdev.h.orig 2015-01-19 13:16:37.000000000 +0100
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+++ tools/include/xen-sys/NetBSD/gntdev.h 2015-01-19 13:16:37.000000000 +0100
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@@ -0,0 +1,105 @@
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+/******************************************************************************
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+ * gntdev.h
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+ *
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+ * Interface to /dev/xen/gntdev.
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+ *
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+ * Copyright (c) 2007, D G Murray
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License version 2
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+ * as published by the Free Software Foundation; or, when distributed
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+ * separately from the Linux kernel or incorporated into other
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+ * software packages, subject to the following license:
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this source file (the "Software"), to deal in the Software without
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+ * restriction, including without limitation the rights to use, copy, modify,
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+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
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+ * and to permit persons to whom the Software is furnished to do so, subject to
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+ * the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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+ * IN THE SOFTWARE.
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+ */
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+
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+#ifndef __NetBSD_PUBLIC_GNTDEV_H__
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+#define __NetBSD_PUBLIC_GNTDEV_H__
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+
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+struct ioctl_gntdev_grant_ref {
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+ /* The domain ID of the grant to be mapped. */
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+ uint32_t domid;
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+ /* The grant reference of the grant to be mapped. */
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+ uint32_t ref;
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+};
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+
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+/*
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+ * Inserts the grant references into the mapping table of an instance
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+ * of gntdev. N.B. This does not perform the mapping, which is deferred
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+ * until mmap() is called with @index as the offset.
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+ */
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+#define IOCTL_GNTDEV_MAP_GRANT_REF \
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+ _IOWR('G', 0, sizeof(struct ioctl_gntdev_map_grant_ref))
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+struct ioctl_gntdev_map_grant_ref {
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+ /* IN parameters */
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+ /* The number of grants to be mapped. */
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+ uint32_t count;
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+ uint32_t pad;
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+ /* OUT parameters */
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+ /* The offset to be used on a subsequent call to mmap(). */
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+ uint64_t index;
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+ /* Variable IN parameter. */
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+ /* Array of grant references, of size @count. */
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+ struct ioctl_gntdev_grant_ref refs[1];
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+};
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+
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+/*
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+ * Removes the grant references from the mapping table of an instance of
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+ * of gntdev. N.B. munmap() must be called on the relevant virtual address(es)
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+ * before this ioctl is called, or an error will result.
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+ */
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+#define IOCTL_GNTDEV_UNMAP_GRANT_REF \
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+ _IOW('G', 1, sizeof(struct ioctl_gntdev_unmap_grant_ref))
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+struct ioctl_gntdev_unmap_grant_ref {
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+ /* IN parameters */
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+ /* The offset was returned by the corresponding map operation. */
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+ uint64_t index;
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+ /* The number of pages to be unmapped. */
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+ uint32_t count;
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+ uint32_t pad;
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+};
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+
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+/*
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+ * Returns the offset in the driver's address space that corresponds
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+ * to @vaddr. This can be used to perform a munmap(), followed by an
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+ * UNMAP_GRANT_REF ioctl, where no state about the offset is retained by
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+ * the caller. The number of pages that were allocated at the same time as
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+ * @vaddr is returned in @count.
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+ *
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+ * N.B. Where more than one page has been mapped into a contiguous range, the
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+ * supplied @vaddr must correspond to the start of the range; otherwise
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+ * an error will result. It is only possible to munmap() the entire
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+ * contiguously-allocated range at once, and not any subrange thereof.
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+ */
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+#define IOCTL_GNTDEV_GET_OFFSET_FOR_VADDR \
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+ _IOWR('G', 2, sizeof(struct ioctl_gntdev_get_offset_for_vaddr))
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+struct ioctl_gntdev_get_offset_for_vaddr {
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+ /* IN parameters */
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+ /* The virtual address of the first mapped page in a range. */
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+ uint64_t vaddr;
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+ /* OUT parameters */
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+ /* The offset that was used in the initial mmap() operation. */
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+ uint64_t offset;
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+ /* The number of pages mapped in the VM area that begins at @vaddr. */
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+ uint32_t count;
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+ uint32_t pad;
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+};
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+
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+#endif /* __NetBSD_PUBLIC_GNTDEV_H__ */
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