diff options
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/gntalloc.h | 82 | ||||
| -rw-r--r-- | include/xen/gntdev.h | 150 |
2 files changed, 0 insertions, 232 deletions
diff --git a/include/xen/gntalloc.h b/include/xen/gntalloc.h deleted file mode 100644 index 76bd580..0000000 --- a/include/xen/gntalloc.h +++ /dev/null @@ -1,82 +0,0 @@ -/****************************************************************************** - * gntalloc.h - * - * Interface to /dev/xen/gntalloc. - * - * Author: Daniel De Graaf <dgdegra@tycho.nsa.gov> - * - * This file is in the public domain. - */ - -#ifndef __LINUX_PUBLIC_GNTALLOC_H__ -#define __LINUX_PUBLIC_GNTALLOC_H__ - -/* - * Allocates a new page and creates a new grant reference. - */ -#define IOCTL_GNTALLOC_ALLOC_GREF \ -_IOC(_IOC_NONE, 'G', 5, sizeof(struct ioctl_gntalloc_alloc_gref)) -struct ioctl_gntalloc_alloc_gref { - /* IN parameters */ - /* The ID of the domain to be given access to the grants. */ - uint16_t domid; - /* Flags for this mapping */ - uint16_t flags; - /* Number of pages to map */ - uint32_t count; - /* OUT parameters */ - /* The offset to be used on a subsequent call to mmap(). */ - uint64_t index; - /* The grant references of the newly created grant, one per page */ - /* Variable size, depending on count */ - uint32_t gref_ids[1]; -}; - -#define GNTALLOC_FLAG_WRITABLE 1 - -/* - * Deallocates the grant reference, allowing the associated page to be freed if - * no other domains are using it. - */ -#define IOCTL_GNTALLOC_DEALLOC_GREF \ -_IOC(_IOC_NONE, 'G', 6, sizeof(struct ioctl_gntalloc_dealloc_gref)) -struct ioctl_gntalloc_dealloc_gref { - /* IN parameters */ - /* The offset returned in the map operation */ - uint64_t index; - /* Number of references to unmap */ - uint32_t count; -}; - -/* - * Sets up an unmap notification within the page, so that the other side can do - * cleanup if this side crashes. Required to implement cross-domain robust - * mutexes or close notification on communication channels. - * - * Each mapped page only supports one notification; multiple calls referring to - * the same page overwrite the previous notification. You must clear the - * notification prior to the IOCTL_GNTALLOC_DEALLOC_GREF if you do not want it - * to occur. - */ -#define IOCTL_GNTALLOC_SET_UNMAP_NOTIFY \ -_IOC(_IOC_NONE, 'G', 7, sizeof(struct ioctl_gntalloc_unmap_notify)) -struct ioctl_gntalloc_unmap_notify { - /* IN parameters */ - /* Offset in the file descriptor for a byte within the page (same as - * used in mmap). If using UNMAP_NOTIFY_CLEAR_BYTE, this is the byte to - * be cleared. Otherwise, it can be any byte in the page whose - * notification we are adjusting. - */ - uint64_t index; - /* Action(s) to take on unmap */ - uint32_t action; - /* Event channel to notify */ - uint32_t event_channel_port; -}; - -/* Clear (set to zero) the byte specified by index */ -#define UNMAP_NOTIFY_CLEAR_BYTE 0x1 -/* Send an interrupt on the indicated event channel */ -#define UNMAP_NOTIFY_SEND_EVENT 0x2 - -#endif /* __LINUX_PUBLIC_GNTALLOC_H__ */ diff --git a/include/xen/gntdev.h b/include/xen/gntdev.h deleted file mode 100644 index 5304bd3..0000000 --- a/include/xen/gntdev.h +++ /dev/null @@ -1,150 +0,0 @@ -/****************************************************************************** - * gntdev.h - * - * Interface to /dev/xen/gntdev. - * - * Copyright (c) 2007, D G Murray - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation; or, when distributed - * separately from the Linux kernel or incorporated into other - * software packages, subject to the following license: - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this source file (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, modify, - * merge, publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ - -#ifndef __LINUX_PUBLIC_GNTDEV_H__ -#define __LINUX_PUBLIC_GNTDEV_H__ - -struct ioctl_gntdev_grant_ref { - /* The domain ID of the grant to be mapped. */ - uint32_t domid; - /* The grant reference of the grant to be mapped. */ - uint32_t ref; -}; - -/* - * Inserts the grant references into the mapping table of an instance - * of gntdev. N.B. This does not perform the mapping, which is deferred - * until mmap() is called with @index as the offset. - */ -#define IOCTL_GNTDEV_MAP_GRANT_REF \ -_IOC(_IOC_NONE, 'G', 0, sizeof(struct ioctl_gntdev_map_grant_ref)) -struct ioctl_gntdev_map_grant_ref { - /* IN parameters */ - /* The number of grants to be mapped. */ - uint32_t count; - uint32_t pad; - /* OUT parameters */ - /* The offset to be used on a subsequent call to mmap(). */ - uint64_t index; - /* Variable IN parameter. */ - /* Array of grant references, of size @count. */ - struct ioctl_gntdev_grant_ref refs[1]; -}; - -/* - * Removes the grant references from the mapping table of an instance of - * of gntdev. N.B. munmap() must be called on the relevant virtual address(es) - * before this ioctl is called, or an error will result. - */ -#define IOCTL_GNTDEV_UNMAP_GRANT_REF \ -_IOC(_IOC_NONE, 'G', 1, sizeof(struct ioctl_gntdev_unmap_grant_ref)) -struct ioctl_gntdev_unmap_grant_ref { - /* IN parameters */ - /* The offset was returned by the corresponding map operation. */ - uint64_t index; - /* The number of pages to be unmapped. */ - uint32_t count; - uint32_t pad; -}; - -/* - * Returns the offset in the driver's address space that corresponds - * to @vaddr. This can be used to perform a munmap(), followed by an - * UNMAP_GRANT_REF ioctl, where no state about the offset is retained by - * the caller. The number of pages that were allocated at the same time as - * @vaddr is returned in @count. - * - * N.B. Where more than one page has been mapped into a contiguous range, the - * supplied @vaddr must correspond to the start of the range; otherwise - * an error will result. It is only possible to munmap() the entire - * contiguously-allocated range at once, and not any subrange thereof. - */ -#define IOCTL_GNTDEV_GET_OFFSET_FOR_VADDR \ -_IOC(_IOC_NONE, 'G', 2, sizeof(struct ioctl_gntdev_get_offset_for_vaddr)) -struct ioctl_gntdev_get_offset_for_vaddr { - /* IN parameters */ - /* The virtual address of the first mapped page in a range. */ - uint64_t vaddr; - /* OUT parameters */ - /* The offset that was used in the initial mmap() operation. */ - uint64_t offset; - /* The number of pages mapped in the VM area that begins at @vaddr. */ - uint32_t count; - uint32_t pad; -}; - -/* - * Sets the maximum number of grants that may mapped at once by this gntdev - * instance. - * - * N.B. This must be called before any other ioctl is performed on the device. - */ -#define IOCTL_GNTDEV_SET_MAX_GRANTS \ -_IOC(_IOC_NONE, 'G', 3, sizeof(struct ioctl_gntdev_set_max_grants)) -struct ioctl_gntdev_set_max_grants { - /* IN parameter */ - /* The maximum number of grants that may be mapped at once. */ - uint32_t count; -}; - -/* - * Sets up an unmap notification within the page, so that the other side can do - * cleanup if this side crashes. Required to implement cross-domain robust - * mutexes or close notification on communication channels. - * - * Each mapped page only supports one notification; multiple calls referring to - * the same page overwrite the previous notification. You must clear the - * notification prior to the IOCTL_GNTALLOC_DEALLOC_GREF if you do not want it - * to occur. - */ -#define IOCTL_GNTDEV_SET_UNMAP_NOTIFY \ -_IOC(_IOC_NONE, 'G', 7, sizeof(struct ioctl_gntdev_unmap_notify)) -struct ioctl_gntdev_unmap_notify { - /* IN parameters */ - /* Offset in the file descriptor for a byte within the page (same as - * used in mmap). If using UNMAP_NOTIFY_CLEAR_BYTE, this is the byte to - * be cleared. Otherwise, it can be any byte in the page whose - * notification we are adjusting. - */ - uint64_t index; - /* Action(s) to take on unmap */ - uint32_t action; - /* Event channel to notify */ - uint32_t event_channel_port; -}; - -/* Clear (set to zero) the byte specified by index */ -#define UNMAP_NOTIFY_CLEAR_BYTE 0x1 -/* Send an interrupt on the indicated event channel */ -#define UNMAP_NOTIFY_SEND_EVENT 0x2 - -#endif /* __LINUX_PUBLIC_GNTDEV_H__ */ |
