Greg Kroah-Hartman | e2be04c | 2017-11-01 15:09:13 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */ |
Ian Campbell | f711628 | 2009-02-06 19:21:19 -0800 | [diff] [blame] | 2 | /****************************************************************************** |
| 3 | * evtchn.h |
| 4 | * |
| 5 | * Interface to /dev/xen/evtchn. |
| 6 | * |
| 7 | * Copyright (c) 2003-2005, K A Fraser |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License version 2 |
| 11 | * as published by the Free Software Foundation; or, when distributed |
| 12 | * separately from the Linux kernel or incorporated into other |
| 13 | * software packages, subject to the following license: |
| 14 | * |
| 15 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 16 | * of this source file (the "Software"), to deal in the Software without |
| 17 | * restriction, including without limitation the rights to use, copy, modify, |
| 18 | * merge, publish, distribute, sublicense, and/or sell copies of the Software, |
| 19 | * and to permit persons to whom the Software is furnished to do so, subject to |
| 20 | * the following conditions: |
| 21 | * |
| 22 | * The above copyright notice and this permission notice shall be included in |
| 23 | * all copies or substantial portions of the Software. |
| 24 | * |
| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 28 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 29 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 30 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 31 | * IN THE SOFTWARE. |
| 32 | */ |
| 33 | |
| 34 | #ifndef __LINUX_PUBLIC_EVTCHN_H__ |
| 35 | #define __LINUX_PUBLIC_EVTCHN_H__ |
| 36 | |
| 37 | /* |
| 38 | * Bind a fresh port to VIRQ @virq. |
| 39 | * Return allocated port. |
| 40 | */ |
| 41 | #define IOCTL_EVTCHN_BIND_VIRQ \ |
| 42 | _IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq)) |
| 43 | struct ioctl_evtchn_bind_virq { |
| 44 | unsigned int virq; |
| 45 | }; |
| 46 | |
| 47 | /* |
| 48 | * Bind a fresh port to remote <@remote_domain, @remote_port>. |
| 49 | * Return allocated port. |
| 50 | */ |
| 51 | #define IOCTL_EVTCHN_BIND_INTERDOMAIN \ |
| 52 | _IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain)) |
| 53 | struct ioctl_evtchn_bind_interdomain { |
| 54 | unsigned int remote_domain, remote_port; |
| 55 | }; |
| 56 | |
| 57 | /* |
| 58 | * Allocate a fresh port for binding to @remote_domain. |
| 59 | * Return allocated port. |
| 60 | */ |
| 61 | #define IOCTL_EVTCHN_BIND_UNBOUND_PORT \ |
| 62 | _IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port)) |
| 63 | struct ioctl_evtchn_bind_unbound_port { |
| 64 | unsigned int remote_domain; |
| 65 | }; |
| 66 | |
| 67 | /* |
| 68 | * Unbind previously allocated @port. |
| 69 | */ |
| 70 | #define IOCTL_EVTCHN_UNBIND \ |
| 71 | _IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind)) |
| 72 | struct ioctl_evtchn_unbind { |
| 73 | unsigned int port; |
| 74 | }; |
| 75 | |
| 76 | /* |
| 77 | * Unbind previously allocated @port. |
| 78 | */ |
| 79 | #define IOCTL_EVTCHN_NOTIFY \ |
| 80 | _IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify)) |
| 81 | struct ioctl_evtchn_notify { |
| 82 | unsigned int port; |
| 83 | }; |
| 84 | |
| 85 | /* Clear and reinitialise the event buffer. Clear error condition. */ |
| 86 | #define IOCTL_EVTCHN_RESET \ |
| 87 | _IOC(_IOC_NONE, 'E', 5, 0) |
| 88 | |
David Vrabel | fbc872c | 2016-07-11 15:45:51 +0100 | [diff] [blame] | 89 | /* |
| 90 | * Restrict this file descriptor so that it can only be used to bind |
| 91 | * new interdomain events from one domain. |
| 92 | * |
| 93 | * Once a file descriptor has been restricted it cannot be |
| 94 | * de-restricted, and must be closed and re-opened. Event channels |
| 95 | * which were bound before restricting remain bound afterwards, and |
| 96 | * can be notified as usual. |
| 97 | */ |
| 98 | #define IOCTL_EVTCHN_RESTRICT_DOMID \ |
| 99 | _IOC(_IOC_NONE, 'E', 6, sizeof(struct ioctl_evtchn_restrict_domid)) |
| 100 | struct ioctl_evtchn_restrict_domid { |
| 101 | domid_t domid; |
| 102 | }; |
| 103 | |
Ian Campbell | f711628 | 2009-02-06 19:21:19 -0800 | [diff] [blame] | 104 | #endif /* __LINUX_PUBLIC_EVTCHN_H__ */ |