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Diffstat (limited to 'include/xen/gntdev.h')
| -rw-r--r-- | include/xen/gntdev.h | 150 | 
1 files changed, 0 insertions, 150 deletions
diff --git a/include/xen/gntdev.h b/include/xen/gntdev.h deleted file mode 100644 index 5304bd3c84c..00000000000 --- 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__ */  | 
