Merge branches 'for-linus/xen/dev-evtchn', 'for-linus/xen/xenbus', 'for-linus/xen/xenfs' and 'for-linus/xen/sys-hypervisor' into for-linus/xen/master
* for-linus/xen/dev-evtchn: xen/dev-evtchn: clean up locking in evtchn xen: export ioctl headers to userspace xen: add /dev/xen/evtchn driver xen: add irq_from_evtchn * for-linus/xen/xenbus: xen/xenbus: export xenbus_dev_changed xen: use device model for suspending xenbus devices xen: remove suspend_cancel hook * for-linus/xen/xenfs: xen: add "capabilities" file * for-linus/xen/sys-hypervisor: xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yet xen/sys/hypervisor: change writable_pt to features xen: add /sys/hypervisor support Conflicts: drivers/xen/Makefilewifi-calibration
Jeremy Fitzhardinge
commit
1943689c47
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|
@ -18,6 +18,16 @@ config XEN_SCRUB_PAGES
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secure, but slightly less efficient.
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If in doubt, say yes.
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config XEN_DEV_EVTCHN
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tristate "Xen /dev/xen/evtchn device"
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depends on XEN
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default y
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help
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The evtchn driver allows a userspace process to triger event
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channels and to receive notification of an event channel
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firing.
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If in doubt, say yes.
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config XENFS
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tristate "Xen filesystem"
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depends on XEN
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@ -41,3 +51,13 @@ config XEN_COMPAT_XENFS
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a xen platform.
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If in doubt, say yes.
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config XEN_SYS_HYPERVISOR
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bool "Create xen entries under /sys/hypervisor"
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depends on XEN && SYSFS
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select SYS_HYPERVISOR
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default y
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help
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Create entries under /sys/hypervisor describing the Xen
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hypervisor environment. When running native or in another
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virtual environment, /sys/hypervisor will still be present,
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but will have no xen contents.
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@ -4,4 +4,6 @@ obj-y += xenbus/
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obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o
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obj-$(CONFIG_XEN_XENCOMM) += xencomm.o
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obj-$(CONFIG_XEN_BALLOON) += balloon.o
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obj-$(CONFIG_XENFS) += xenfs/
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obj-$(CONFIG_XEN_DEV_EVTCHN) += evtchn.o
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obj-$(CONFIG_XENFS) += xenfs/
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obj-$(CONFIG_XEN_SYS_HYPERVISOR) += sys-hypervisor.o
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@ -151,6 +151,12 @@ static unsigned int evtchn_from_irq(unsigned irq)
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return info_for_irq(irq)->evtchn;
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}
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unsigned irq_from_evtchn(unsigned int evtchn)
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{
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return evtchn_to_irq[evtchn];
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}
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EXPORT_SYMBOL_GPL(irq_from_evtchn);
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static enum ipi_vector ipi_from_irq(unsigned irq)
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{
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struct irq_info *info = info_for_irq(irq);
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@ -0,0 +1,507 @@
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/******************************************************************************
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* evtchn.c
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*
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* Driver for receiving and demuxing event-channel signals.
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*
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* Copyright (c) 2004-2005, K A Fraser
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* Multi-process extensions Copyright (c) 2004, Steven Smith
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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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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/errno.h>
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#include <linux/miscdevice.h>
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#include <linux/major.h>
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#include <linux/proc_fs.h>
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#include <linux/stat.h>
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#include <linux/poll.h>
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#include <linux/irq.h>
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#include <linux/init.h>
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#include <linux/gfp.h>
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#include <linux/mutex.h>
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#include <linux/cpu.h>
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#include <xen/events.h>
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#include <xen/evtchn.h>
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#include <asm/xen/hypervisor.h>
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struct per_user_data {
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struct mutex bind_mutex; /* serialize bind/unbind operations */
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/* Notification ring, accessed via /dev/xen/evtchn. */
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#define EVTCHN_RING_SIZE (PAGE_SIZE / sizeof(evtchn_port_t))
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#define EVTCHN_RING_MASK(_i) ((_i)&(EVTCHN_RING_SIZE-1))
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evtchn_port_t *ring;
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unsigned int ring_cons, ring_prod, ring_overflow;
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struct mutex ring_cons_mutex; /* protect against concurrent readers */
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/* Processes wait on this queue when ring is empty. */
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wait_queue_head_t evtchn_wait;
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struct fasync_struct *evtchn_async_queue;
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const char *name;
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};
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/* Who's bound to each port? */
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static struct per_user_data *port_user[NR_EVENT_CHANNELS];
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static DEFINE_SPINLOCK(port_user_lock); /* protects port_user[] and ring_prod */
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irqreturn_t evtchn_interrupt(int irq, void *data)
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{
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unsigned int port = (unsigned long)data;
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struct per_user_data *u;
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spin_lock(&port_user_lock);
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u = port_user[port];
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disable_irq_nosync(irq);
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if ((u->ring_prod - u->ring_cons) < EVTCHN_RING_SIZE) {
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u->ring[EVTCHN_RING_MASK(u->ring_prod)] = port;
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wmb(); /* Ensure ring contents visible */
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if (u->ring_cons == u->ring_prod++) {
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wake_up_interruptible(&u->evtchn_wait);
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kill_fasync(&u->evtchn_async_queue,
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SIGIO, POLL_IN);
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}
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} else {
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u->ring_overflow = 1;
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}
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spin_unlock(&port_user_lock);
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return IRQ_HANDLED;
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}
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static ssize_t evtchn_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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int rc;
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unsigned int c, p, bytes1 = 0, bytes2 = 0;
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struct per_user_data *u = file->private_data;
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/* Whole number of ports. */
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count &= ~(sizeof(evtchn_port_t)-1);
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if (count == 0)
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return 0;
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if (count > PAGE_SIZE)
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count = PAGE_SIZE;
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for (;;) {
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mutex_lock(&u->ring_cons_mutex);
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rc = -EFBIG;
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if (u->ring_overflow)
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goto unlock_out;
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c = u->ring_cons;
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p = u->ring_prod;
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if (c != p)
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break;
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mutex_unlock(&u->ring_cons_mutex);
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if (file->f_flags & O_NONBLOCK)
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return -EAGAIN;
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rc = wait_event_interruptible(u->evtchn_wait,
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u->ring_cons != u->ring_prod);
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if (rc)
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return rc;
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}
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/* Byte lengths of two chunks. Chunk split (if any) is at ring wrap. */
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if (((c ^ p) & EVTCHN_RING_SIZE) != 0) {
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bytes1 = (EVTCHN_RING_SIZE - EVTCHN_RING_MASK(c)) *
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sizeof(evtchn_port_t);
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bytes2 = EVTCHN_RING_MASK(p) * sizeof(evtchn_port_t);
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} else {
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bytes1 = (p - c) * sizeof(evtchn_port_t);
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bytes2 = 0;
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}
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/* Truncate chunks according to caller's maximum byte count. */
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if (bytes1 > count) {
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bytes1 = count;
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bytes2 = 0;
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} else if ((bytes1 + bytes2) > count) {
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bytes2 = count - bytes1;
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}
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rc = -EFAULT;
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rmb(); /* Ensure that we see the port before we copy it. */
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if (copy_to_user(buf, &u->ring[EVTCHN_RING_MASK(c)], bytes1) ||
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((bytes2 != 0) &&
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copy_to_user(&buf[bytes1], &u->ring[0], bytes2)))
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goto unlock_out;
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u->ring_cons += (bytes1 + bytes2) / sizeof(evtchn_port_t);
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rc = bytes1 + bytes2;
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unlock_out:
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mutex_unlock(&u->ring_cons_mutex);
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return rc;
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}
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static ssize_t evtchn_write(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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int rc, i;
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evtchn_port_t *kbuf = (evtchn_port_t *)__get_free_page(GFP_KERNEL);
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struct per_user_data *u = file->private_data;
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if (kbuf == NULL)
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return -ENOMEM;
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/* Whole number of ports. */
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count &= ~(sizeof(evtchn_port_t)-1);
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rc = 0;
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if (count == 0)
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goto out;
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if (count > PAGE_SIZE)
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count = PAGE_SIZE;
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rc = -EFAULT;
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if (copy_from_user(kbuf, buf, count) != 0)
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goto out;
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spin_lock_irq(&port_user_lock);
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for (i = 0; i < (count/sizeof(evtchn_port_t)); i++)
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if ((kbuf[i] < NR_EVENT_CHANNELS) && (port_user[kbuf[i]] == u))
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enable_irq(irq_from_evtchn(kbuf[i]));
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spin_unlock_irq(&port_user_lock);
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rc = count;
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out:
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free_page((unsigned long)kbuf);
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return rc;
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}
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static int evtchn_bind_to_user(struct per_user_data *u, int port)
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{
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int rc = 0;
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/*
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* Ports are never reused, so every caller should pass in a
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* unique port.
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*
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* (Locking not necessary because we haven't registered the
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* interrupt handler yet, and our caller has already
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* serialized bind operations.)
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*/
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BUG_ON(port_user[port] != NULL);
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port_user[port] = u;
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rc = bind_evtchn_to_irqhandler(port, evtchn_interrupt, IRQF_DISABLED,
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u->name, (void *)(unsigned long)port);
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if (rc >= 0)
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rc = 0;
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return rc;
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}
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static void evtchn_unbind_from_user(struct per_user_data *u, int port)
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{
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int irq = irq_from_evtchn(port);
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unbind_from_irqhandler(irq, (void *)(unsigned long)port);
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/* make sure we unbind the irq handler before clearing the port */
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barrier();
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port_user[port] = NULL;
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}
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static long evtchn_ioctl(struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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int rc;
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struct per_user_data *u = file->private_data;
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void __user *uarg = (void __user *) arg;
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/* Prevent bind from racing with unbind */
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mutex_lock(&u->bind_mutex);
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switch (cmd) {
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case IOCTL_EVTCHN_BIND_VIRQ: {
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struct ioctl_evtchn_bind_virq bind;
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struct evtchn_bind_virq bind_virq;
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rc = -EFAULT;
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if (copy_from_user(&bind, uarg, sizeof(bind)))
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break;
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||||
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||||
bind_virq.virq = bind.virq;
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||||
bind_virq.vcpu = 0;
|
||||
rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
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||||
&bind_virq);
|
||||
if (rc != 0)
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break;
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||||
|
||||
rc = evtchn_bind_to_user(u, bind_virq.port);
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||||
if (rc == 0)
|
||||
rc = bind_virq.port;
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||||
break;
|
||||
}
|
||||
|
||||
case IOCTL_EVTCHN_BIND_INTERDOMAIN: {
|
||||
struct ioctl_evtchn_bind_interdomain bind;
|
||||
struct evtchn_bind_interdomain bind_interdomain;
|
||||
|
||||
rc = -EFAULT;
|
||||
if (copy_from_user(&bind, uarg, sizeof(bind)))
|
||||
break;
|
||||
|
||||
bind_interdomain.remote_dom = bind.remote_domain;
|
||||
bind_interdomain.remote_port = bind.remote_port;
|
||||
rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_interdomain,
|
||||
&bind_interdomain);
|
||||
if (rc != 0)
|
||||
break;
|
||||
|
||||
rc = evtchn_bind_to_user(u, bind_interdomain.local_port);
|
||||
if (rc == 0)
|
||||
rc = bind_interdomain.local_port;
|
||||
break;
|
||||
}
|
||||
|
||||
case IOCTL_EVTCHN_BIND_UNBOUND_PORT: {
|
||||
struct ioctl_evtchn_bind_unbound_port bind;
|
||||
struct evtchn_alloc_unbound alloc_unbound;
|
||||
|
||||
rc = -EFAULT;
|
||||
if (copy_from_user(&bind, uarg, sizeof(bind)))
|
||||
break;
|
||||
|
||||
alloc_unbound.dom = DOMID_SELF;
|
||||
alloc_unbound.remote_dom = bind.remote_domain;
|
||||
rc = HYPERVISOR_event_channel_op(EVTCHNOP_alloc_unbound,
|
||||
&alloc_unbound);
|
||||
if (rc != 0)
|
||||
break;
|
||||
|
||||
rc = evtchn_bind_to_user(u, alloc_unbound.port);
|
||||
if (rc == 0)
|
||||
rc = alloc_unbound.port;
|
||||
break;
|
||||
}
|
||||
|
||||
case IOCTL_EVTCHN_UNBIND: {
|
||||
struct ioctl_evtchn_unbind unbind;
|
||||
|
||||
rc = -EFAULT;
|
||||
if (copy_from_user(&unbind, uarg, sizeof(unbind)))
|
||||
break;
|
||||
|
||||
rc = -EINVAL;
|
||||
if (unbind.port >= NR_EVENT_CHANNELS)
|
||||
break;
|
||||
|
||||
spin_lock_irq(&port_user_lock);
|
||||
|
||||
rc = -ENOTCONN;
|
||||
if (port_user[unbind.port] != u) {
|
||||
spin_unlock_irq(&port_user_lock);
|
||||
break;
|
||||
}
|
||||
|
||||
evtchn_unbind_from_user(u, unbind.port);
|
||||
|
||||
spin_unlock_irq(&port_user_lock);
|
||||
|
||||
rc = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
case IOCTL_EVTCHN_NOTIFY: {
|
||||
struct ioctl_evtchn_notify notify;
|
||||
|
||||
rc = -EFAULT;
|
||||
if (copy_from_user(¬ify, uarg, sizeof(notify)))
|
||||
break;
|
||||
|
||||
if (notify.port >= NR_EVENT_CHANNELS) {
|
||||
rc = -EINVAL;
|
||||
} else if (port_user[notify.port] != u) {
|
||||
rc = -ENOTCONN;
|
||||
} else {
|
||||
notify_remote_via_evtchn(notify.port);
|
||||
rc = 0;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case IOCTL_EVTCHN_RESET: {
|
||||
/* Initialise the ring to empty. Clear errors. */
|
||||
mutex_lock(&u->ring_cons_mutex);
|
||||
spin_lock_irq(&port_user_lock);
|
||||
u->ring_cons = u->ring_prod = u->ring_overflow = 0;
|
||||
spin_unlock_irq(&port_user_lock);
|
||||
mutex_unlock(&u->ring_cons_mutex);
|
||||
rc = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
default:
|
||||
rc = -ENOSYS;
|
||||
break;
|
||||
}
|
||||
mutex_unlock(&u->bind_mutex);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static unsigned int evtchn_poll(struct file *file, poll_table *wait)
|
||||
{
|
||||
unsigned int mask = POLLOUT | POLLWRNORM;
|
||||
struct per_user_data *u = file->private_data;
|
||||
|
||||
poll_wait(file, &u->evtchn_wait, wait);
|
||||
if (u->ring_cons != u->ring_prod)
|
||||
mask |= POLLIN | POLLRDNORM;
|
||||
if (u->ring_overflow)
|
||||
mask = POLLERR;
|
||||
return mask;
|
||||
}
|
||||
|
||||
static int evtchn_fasync(int fd, struct file *filp, int on)
|
||||
{
|
||||
struct per_user_data *u = filp->private_data;
|
||||
return fasync_helper(fd, filp, on, &u->evtchn_async_queue);
|
||||
}
|
||||
|
||||
static int evtchn_open(struct inode *inode, struct file *filp)
|
||||
{
|
||||
struct per_user_data *u;
|
||||
|
||||
u = kzalloc(sizeof(*u), GFP_KERNEL);
|
||||
if (u == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
u->name = kasprintf(GFP_KERNEL, "evtchn:%s", current->comm);
|
||||
if (u->name == NULL) {
|
||||
kfree(u);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
init_waitqueue_head(&u->evtchn_wait);
|
||||
|
||||
u->ring = (evtchn_port_t *)__get_free_page(GFP_KERNEL);
|
||||
if (u->ring == NULL) {
|
||||
kfree(u->name);
|
||||
kfree(u);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
mutex_init(&u->bind_mutex);
|
||||
mutex_init(&u->ring_cons_mutex);
|
||||
|
||||
filp->private_data = u;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int evtchn_release(struct inode *inode, struct file *filp)
|
||||
{
|
||||
int i;
|
||||
struct per_user_data *u = filp->private_data;
|
||||
|
||||
spin_lock_irq(&port_user_lock);
|
||||
|
||||
free_page((unsigned long)u->ring);
|
||||
|
||||
for (i = 0; i < NR_EVENT_CHANNELS; i++) {
|
||||
if (port_user[i] != u)
|
||||
continue;
|
||||
|
||||
evtchn_unbind_from_user(port_user[i], i);
|
||||
}
|
||||
|
||||
spin_unlock_irq(&port_user_lock);
|
||||
|
||||
kfree(u->name);
|
||||
kfree(u);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct file_operations evtchn_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.read = evtchn_read,
|
||||
.write = evtchn_write,
|
||||
.unlocked_ioctl = evtchn_ioctl,
|
||||
.poll = evtchn_poll,
|
||||
.fasync = evtchn_fasync,
|
||||
.open = evtchn_open,
|
||||
.release = evtchn_release,
|
||||
};
|
||||
|
||||
static struct miscdevice evtchn_miscdev = {
|
||||
.minor = MISC_DYNAMIC_MINOR,
|
||||
.name = "evtchn",
|
||||
.fops = &evtchn_fops,
|
||||
};
|
||||
static int __init evtchn_init(void)
|
||||
{
|
||||
int err;
|
||||
|
||||
if (!xen_domain())
|
||||
return -ENODEV;
|
||||
|
||||
spin_lock_init(&port_user_lock);
|
||||
memset(port_user, 0, sizeof(port_user));
|
||||
|
||||
/* Create '/dev/misc/evtchn'. */
|
||||
err = misc_register(&evtchn_miscdev);
|
||||
if (err != 0) {
|
||||
printk(KERN_ALERT "Could not register /dev/misc/evtchn\n");
|
||||
return err;
|
||||
}
|
||||
|
||||
printk(KERN_INFO "Event-channel device installed.\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit evtchn_cleanup(void)
|
||||
{
|
||||
misc_deregister(&evtchn_miscdev);
|
||||
}
|
||||
|
||||
module_init(evtchn_init);
|
||||
module_exit(evtchn_cleanup);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -104,9 +104,8 @@ static void do_suspend(void)
|
|||
goto out;
|
||||
}
|
||||
|
||||
printk("suspending xenbus...\n");
|
||||
/* XXX use normal device tree? */
|
||||
xenbus_suspend();
|
||||
printk(KERN_DEBUG "suspending xenstore...\n");
|
||||
xs_suspend();
|
||||
|
||||
err = stop_machine(xen_suspend, &cancelled, cpumask_of(0));
|
||||
if (err) {
|
||||
|
|
@ -116,9 +115,9 @@ static void do_suspend(void)
|
|||
|
||||
if (!cancelled) {
|
||||
xen_arch_resume();
|
||||
xenbus_resume();
|
||||
xs_resume();
|
||||
} else
|
||||
xenbus_suspend_cancel();
|
||||
xs_suspend_cancel();
|
||||
|
||||
device_resume(PMSG_RESUME);
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,445 @@
|
|||
/*
|
||||
* copyright (c) 2006 IBM Corporation
|
||||
* Authored by: Mike D. Day <ncmike@us.ibm.com>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/kobject.h>
|
||||
|
||||
#include <asm/xen/hypervisor.h>
|
||||
#include <asm/xen/hypercall.h>
|
||||
|
||||
#include <xen/xenbus.h>
|
||||
#include <xen/interface/xen.h>
|
||||
#include <xen/interface/version.h>
|
||||
|
||||
#define HYPERVISOR_ATTR_RO(_name) \
|
||||
static struct hyp_sysfs_attr _name##_attr = __ATTR_RO(_name)
|
||||
|
||||
#define HYPERVISOR_ATTR_RW(_name) \
|
||||
static struct hyp_sysfs_attr _name##_attr = \
|
||||
__ATTR(_name, 0644, _name##_show, _name##_store)
|
||||
|
||||
struct hyp_sysfs_attr {
|
||||
struct attribute attr;
|
||||
ssize_t (*show)(struct hyp_sysfs_attr *, char *);
|
||||
ssize_t (*store)(struct hyp_sysfs_attr *, const char *, size_t);
|
||||
void *hyp_attr_data;
|
||||
};
|
||||
|
||||
static ssize_t type_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
return sprintf(buffer, "xen\n");
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(type);
|
||||
|
||||
static int __init xen_sysfs_type_init(void)
|
||||
{
|
||||
return sysfs_create_file(hypervisor_kobj, &type_attr.attr);
|
||||
}
|
||||
|
||||
static void xen_sysfs_type_destroy(void)
|
||||
{
|
||||
sysfs_remove_file(hypervisor_kobj, &type_attr.attr);
|
||||
}
|
||||
|
||||
/* xen version attributes */
|
||||
static ssize_t major_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int version = HYPERVISOR_xen_version(XENVER_version, NULL);
|
||||
if (version)
|
||||
return sprintf(buffer, "%d\n", version >> 16);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(major);
|
||||
|
||||
static ssize_t minor_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int version = HYPERVISOR_xen_version(XENVER_version, NULL);
|
||||
if (version)
|
||||
return sprintf(buffer, "%d\n", version & 0xff);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(minor);
|
||||
|
||||
static ssize_t extra_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret = -ENOMEM;
|
||||
char *extra;
|
||||
|
||||
extra = kmalloc(XEN_EXTRAVERSION_LEN, GFP_KERNEL);
|
||||
if (extra) {
|
||||
ret = HYPERVISOR_xen_version(XENVER_extraversion, extra);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%s\n", extra);
|
||||
kfree(extra);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(extra);
|
||||
|
||||
static struct attribute *version_attrs[] = {
|
||||
&major_attr.attr,
|
||||
&minor_attr.attr,
|
||||
&extra_attr.attr,
|
||||
NULL
|
||||
};
|
||||
|
||||
static struct attribute_group version_group = {
|
||||
.name = "version",
|
||||
.attrs = version_attrs,
|
||||
};
|
||||
|
||||
static int __init xen_sysfs_version_init(void)
|
||||
{
|
||||
return sysfs_create_group(hypervisor_kobj, &version_group);
|
||||
}
|
||||
|
||||
static void xen_sysfs_version_destroy(void)
|
||||
{
|
||||
sysfs_remove_group(hypervisor_kobj, &version_group);
|
||||
}
|
||||
|
||||
/* UUID */
|
||||
|
||||
static ssize_t uuid_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
char *vm, *val;
|
||||
int ret;
|
||||
extern int xenstored_ready;
|
||||
|
||||
if (!xenstored_ready)
|
||||
return -EBUSY;
|
||||
|
||||
vm = xenbus_read(XBT_NIL, "vm", "", NULL);
|
||||
if (IS_ERR(vm))
|
||||
return PTR_ERR(vm);
|
||||
val = xenbus_read(XBT_NIL, vm, "uuid", NULL);
|
||||
kfree(vm);
|
||||
if (IS_ERR(val))
|
||||
return PTR_ERR(val);
|
||||
ret = sprintf(buffer, "%s\n", val);
|
||||
kfree(val);
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(uuid);
|
||||
|
||||
static int __init xen_sysfs_uuid_init(void)
|
||||
{
|
||||
return sysfs_create_file(hypervisor_kobj, &uuid_attr.attr);
|
||||
}
|
||||
|
||||
static void xen_sysfs_uuid_destroy(void)
|
||||
{
|
||||
sysfs_remove_file(hypervisor_kobj, &uuid_attr.attr);
|
||||
}
|
||||
|
||||
/* xen compilation attributes */
|
||||
|
||||
static ssize_t compiler_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret = -ENOMEM;
|
||||
struct xen_compile_info *info;
|
||||
|
||||
info = kmalloc(sizeof(struct xen_compile_info), GFP_KERNEL);
|
||||
if (info) {
|
||||
ret = HYPERVISOR_xen_version(XENVER_compile_info, info);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%s\n", info->compiler);
|
||||
kfree(info);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(compiler);
|
||||
|
||||
static ssize_t compiled_by_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret = -ENOMEM;
|
||||
struct xen_compile_info *info;
|
||||
|
||||
info = kmalloc(sizeof(struct xen_compile_info), GFP_KERNEL);
|
||||
if (info) {
|
||||
ret = HYPERVISOR_xen_version(XENVER_compile_info, info);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%s\n", info->compile_by);
|
||||
kfree(info);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(compiled_by);
|
||||
|
||||
static ssize_t compile_date_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret = -ENOMEM;
|
||||
struct xen_compile_info *info;
|
||||
|
||||
info = kmalloc(sizeof(struct xen_compile_info), GFP_KERNEL);
|
||||
if (info) {
|
||||
ret = HYPERVISOR_xen_version(XENVER_compile_info, info);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%s\n", info->compile_date);
|
||||
kfree(info);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(compile_date);
|
||||
|
||||
static struct attribute *xen_compile_attrs[] = {
|
||||
&compiler_attr.attr,
|
||||
&compiled_by_attr.attr,
|
||||
&compile_date_attr.attr,
|
||||
NULL
|
||||
};
|
||||
|
||||
static struct attribute_group xen_compilation_group = {
|
||||
.name = "compilation",
|
||||
.attrs = xen_compile_attrs,
|
||||
};
|
||||
|
||||
int __init static xen_compilation_init(void)
|
||||
{
|
||||
return sysfs_create_group(hypervisor_kobj, &xen_compilation_group);
|
||||
}
|
||||
|
||||
static void xen_compilation_destroy(void)
|
||||
{
|
||||
sysfs_remove_group(hypervisor_kobj, &xen_compilation_group);
|
||||
}
|
||||
|
||||
/* xen properties info */
|
||||
|
||||
static ssize_t capabilities_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret = -ENOMEM;
|
||||
char *caps;
|
||||
|
||||
caps = kmalloc(XEN_CAPABILITIES_INFO_LEN, GFP_KERNEL);
|
||||
if (caps) {
|
||||
ret = HYPERVISOR_xen_version(XENVER_capabilities, caps);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%s\n", caps);
|
||||
kfree(caps);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(capabilities);
|
||||
|
||||
static ssize_t changeset_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret = -ENOMEM;
|
||||
char *cset;
|
||||
|
||||
cset = kmalloc(XEN_CHANGESET_INFO_LEN, GFP_KERNEL);
|
||||
if (cset) {
|
||||
ret = HYPERVISOR_xen_version(XENVER_changeset, cset);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%s\n", cset);
|
||||
kfree(cset);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(changeset);
|
||||
|
||||
static ssize_t virtual_start_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret = -ENOMEM;
|
||||
struct xen_platform_parameters *parms;
|
||||
|
||||
parms = kmalloc(sizeof(struct xen_platform_parameters), GFP_KERNEL);
|
||||
if (parms) {
|
||||
ret = HYPERVISOR_xen_version(XENVER_platform_parameters,
|
||||
parms);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%lx\n", parms->virt_start);
|
||||
kfree(parms);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(virtual_start);
|
||||
|
||||
static ssize_t pagesize_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = HYPERVISOR_xen_version(XENVER_pagesize, NULL);
|
||||
if (ret > 0)
|
||||
ret = sprintf(buffer, "%x\n", ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(pagesize);
|
||||
|
||||
static ssize_t xen_feature_show(int index, char *buffer)
|
||||
{
|
||||
ssize_t ret;
|
||||
struct xen_feature_info info;
|
||||
|
||||
info.submap_idx = index;
|
||||
ret = HYPERVISOR_xen_version(XENVER_get_features, &info);
|
||||
if (!ret)
|
||||
ret = sprintf(buffer, "%08x", info.submap);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static ssize_t features_show(struct hyp_sysfs_attr *attr, char *buffer)
|
||||
{
|
||||
ssize_t len;
|
||||
int i;
|
||||
|
||||
len = 0;
|
||||
for (i = XENFEAT_NR_SUBMAPS-1; i >= 0; i--) {
|
||||
int ret = xen_feature_show(i, buffer + len);
|
||||
if (ret < 0) {
|
||||
if (len == 0)
|
||||
len = ret;
|
||||
break;
|
||||
}
|
||||
len += ret;
|
||||
}
|
||||
if (len > 0)
|
||||
buffer[len++] = '\n';
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
HYPERVISOR_ATTR_RO(features);
|
||||
|
||||
static struct attribute *xen_properties_attrs[] = {
|
||||
&capabilities_attr.attr,
|
||||
&changeset_attr.attr,
|
||||
&virtual_start_attr.attr,
|
||||
&pagesize_attr.attr,
|
||||
&features_attr.attr,
|
||||
NULL
|
||||
};
|
||||
|
||||
static struct attribute_group xen_properties_group = {
|
||||
.name = "properties",
|
||||
.attrs = xen_properties_attrs,
|
||||
};
|
||||
|
||||
static int __init xen_properties_init(void)
|
||||
{
|
||||
return sysfs_create_group(hypervisor_kobj, &xen_properties_group);
|
||||
}
|
||||
|
||||
static void xen_properties_destroy(void)
|
||||
{
|
||||
sysfs_remove_group(hypervisor_kobj, &xen_properties_group);
|
||||
}
|
||||
|
||||
static int __init hyper_sysfs_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (!xen_domain())
|
||||
return -ENODEV;
|
||||
|
||||
ret = xen_sysfs_type_init();
|
||||
if (ret)
|
||||
goto out;
|
||||
ret = xen_sysfs_version_init();
|
||||
if (ret)
|
||||
goto version_out;
|
||||
ret = xen_compilation_init();
|
||||
if (ret)
|
||||
goto comp_out;
|
||||
ret = xen_sysfs_uuid_init();
|
||||
if (ret)
|
||||
goto uuid_out;
|
||||
ret = xen_properties_init();
|
||||
if (ret)
|
||||
goto prop_out;
|
||||
|
||||
goto out;
|
||||
|
||||
prop_out:
|
||||
xen_sysfs_uuid_destroy();
|
||||
uuid_out:
|
||||
xen_compilation_destroy();
|
||||
comp_out:
|
||||
xen_sysfs_version_destroy();
|
||||
version_out:
|
||||
xen_sysfs_type_destroy();
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit hyper_sysfs_exit(void)
|
||||
{
|
||||
xen_properties_destroy();
|
||||
xen_compilation_destroy();
|
||||
xen_sysfs_uuid_destroy();
|
||||
xen_sysfs_version_destroy();
|
||||
xen_sysfs_type_destroy();
|
||||
|
||||
}
|
||||
module_init(hyper_sysfs_init);
|
||||
module_exit(hyper_sysfs_exit);
|
||||
|
||||
static ssize_t hyp_sysfs_show(struct kobject *kobj,
|
||||
struct attribute *attr,
|
||||
char *buffer)
|
||||
{
|
||||
struct hyp_sysfs_attr *hyp_attr;
|
||||
hyp_attr = container_of(attr, struct hyp_sysfs_attr, attr);
|
||||
if (hyp_attr->show)
|
||||
return hyp_attr->show(hyp_attr, buffer);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t hyp_sysfs_store(struct kobject *kobj,
|
||||
struct attribute *attr,
|
||||
const char *buffer,
|
||||
size_t len)
|
||||
{
|
||||
struct hyp_sysfs_attr *hyp_attr;
|
||||
hyp_attr = container_of(attr, struct hyp_sysfs_attr, attr);
|
||||
if (hyp_attr->store)
|
||||
return hyp_attr->store(hyp_attr, buffer, len);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct sysfs_ops hyp_sysfs_ops = {
|
||||
.show = hyp_sysfs_show,
|
||||
.store = hyp_sysfs_store,
|
||||
};
|
||||
|
||||
static struct kobj_type hyp_sysfs_kobj_type = {
|
||||
.sysfs_ops = &hyp_sysfs_ops,
|
||||
};
|
||||
|
||||
static int __init hypervisor_subsys_init(void)
|
||||
{
|
||||
if (!xen_domain())
|
||||
return -ENODEV;
|
||||
|
||||
hypervisor_kobj->ktype = &hyp_sysfs_kobj_type;
|
||||
return 0;
|
||||
}
|
||||
device_initcall(hypervisor_subsys_init);
|
||||
|
|
@ -71,6 +71,9 @@ static int xenbus_probe_frontend(const char *type, const char *name);
|
|||
|
||||
static void xenbus_dev_shutdown(struct device *_dev);
|
||||
|
||||
static int xenbus_dev_suspend(struct device *dev, pm_message_t state);
|
||||
static int xenbus_dev_resume(struct device *dev);
|
||||
|
||||
/* If something in array of ids matches this device, return it. */
|
||||
static const struct xenbus_device_id *
|
||||
match_device(const struct xenbus_device_id *arr, struct xenbus_device *dev)
|
||||
|
|
@ -188,6 +191,9 @@ static struct xen_bus_type xenbus_frontend = {
|
|||
.remove = xenbus_dev_remove,
|
||||
.shutdown = xenbus_dev_shutdown,
|
||||
.dev_attrs = xenbus_dev_attrs,
|
||||
|
||||
.suspend = xenbus_dev_suspend,
|
||||
.resume = xenbus_dev_resume,
|
||||
},
|
||||
};
|
||||
|
||||
|
|
@ -654,6 +660,7 @@ void xenbus_dev_changed(const char *node, struct xen_bus_type *bus)
|
|||
|
||||
kfree(root);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(xenbus_dev_changed);
|
||||
|
||||
static void frontend_changed(struct xenbus_watch *watch,
|
||||
const char **vec, unsigned int len)
|
||||
|
|
@ -669,7 +676,7 @@ static struct xenbus_watch fe_watch = {
|
|||
.callback = frontend_changed,
|
||||
};
|
||||
|
||||
static int suspend_dev(struct device *dev, void *data)
|
||||
static int xenbus_dev_suspend(struct device *dev, pm_message_t state)
|
||||
{
|
||||
int err = 0;
|
||||
struct xenbus_driver *drv;
|
||||
|
|
@ -682,35 +689,14 @@ static int suspend_dev(struct device *dev, void *data)
|
|||
drv = to_xenbus_driver(dev->driver);
|
||||
xdev = container_of(dev, struct xenbus_device, dev);
|
||||
if (drv->suspend)
|
||||
err = drv->suspend(xdev);
|
||||
err = drv->suspend(xdev, state);
|
||||
if (err)
|
||||
printk(KERN_WARNING
|
||||
"xenbus: suspend %s failed: %i\n", dev_name(dev), err);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int suspend_cancel_dev(struct device *dev, void *data)
|
||||
{
|
||||
int err = 0;
|
||||
struct xenbus_driver *drv;
|
||||
struct xenbus_device *xdev;
|
||||
|
||||
DPRINTK("");
|
||||
|
||||
if (dev->driver == NULL)
|
||||
return 0;
|
||||
drv = to_xenbus_driver(dev->driver);
|
||||
xdev = container_of(dev, struct xenbus_device, dev);
|
||||
if (drv->suspend_cancel)
|
||||
err = drv->suspend_cancel(xdev);
|
||||
if (err)
|
||||
printk(KERN_WARNING
|
||||
"xenbus: suspend_cancel %s failed: %i\n",
|
||||
dev_name(dev), err);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int resume_dev(struct device *dev, void *data)
|
||||
static int xenbus_dev_resume(struct device *dev)
|
||||
{
|
||||
int err;
|
||||
struct xenbus_driver *drv;
|
||||
|
|
@ -755,33 +741,6 @@ static int resume_dev(struct device *dev, void *data)
|
|||
return 0;
|
||||
}
|
||||
|
||||
void xenbus_suspend(void)
|
||||
{
|
||||
DPRINTK("");
|
||||
|
||||
bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, suspend_dev);
|
||||
xenbus_backend_suspend(suspend_dev);
|
||||
xs_suspend();
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(xenbus_suspend);
|
||||
|
||||
void xenbus_resume(void)
|
||||
{
|
||||
xb_init_comms();
|
||||
xs_resume();
|
||||
bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, resume_dev);
|
||||
xenbus_backend_resume(resume_dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(xenbus_resume);
|
||||
|
||||
void xenbus_suspend_cancel(void)
|
||||
{
|
||||
xs_suspend_cancel();
|
||||
bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, suspend_cancel_dev);
|
||||
xenbus_backend_resume(suspend_cancel_dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(xenbus_suspend_cancel);
|
||||
|
||||
/* A flag to determine if xenstored is 'ready' (i.e. has started) */
|
||||
int xenstored_ready = 0;
|
||||
|
||||
|
|
|
|||
|
|
@ -673,6 +673,8 @@ void xs_resume(void)
|
|||
struct xenbus_watch *watch;
|
||||
char token[sizeof(watch) * 2 + 1];
|
||||
|
||||
xb_init_comms();
|
||||
|
||||
mutex_unlock(&xs_state.response_mutex);
|
||||
mutex_unlock(&xs_state.request_mutex);
|
||||
up_write(&xs_state.transaction_mutex);
|
||||
|
|
|
|||
|
|
@ -20,10 +20,27 @@
|
|||
MODULE_DESCRIPTION("Xen filesystem");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
static ssize_t capabilities_read(struct file *file, char __user *buf,
|
||||
size_t size, loff_t *off)
|
||||
{
|
||||
char *tmp = "";
|
||||
|
||||
if (xen_initial_domain())
|
||||
tmp = "control_d\n";
|
||||
|
||||
return simple_read_from_buffer(buf, size, off, tmp, strlen(tmp));
|
||||
}
|
||||
|
||||
static const struct file_operations capabilities_file_ops = {
|
||||
.read = capabilities_read,
|
||||
};
|
||||
|
||||
static int xenfs_fill_super(struct super_block *sb, void *data, int silent)
|
||||
{
|
||||
static struct tree_descr xenfs_files[] = {
|
||||
[2] = {"xenbus", &xenbus_file_ops, S_IRUSR|S_IWUSR},
|
||||
[1] = {},
|
||||
{ "xenbus", &xenbus_file_ops, S_IRUSR|S_IWUSR },
|
||||
{ "capabilities", &capabilities_file_ops, S_IRUGO },
|
||||
{""},
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -8,3 +8,4 @@ header-y += mtd/
|
|||
header-y += rdma/
|
||||
header-y += video/
|
||||
header-y += drm/
|
||||
header-y += xen/
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
header-y += evtchn.h
|
||||
|
|
@ -53,4 +53,7 @@ bool xen_test_irq_pending(int irq);
|
|||
irq will be disabled so it won't deliver an interrupt. */
|
||||
void xen_poll_irq(int irq);
|
||||
|
||||
/* Determine the IRQ which is bound to an event channel */
|
||||
unsigned irq_from_evtchn(unsigned int evtchn);
|
||||
|
||||
#endif /* _XEN_EVENTS_H */
|
||||
|
|
|
|||
|
|
@ -0,0 +1,88 @@
|
|||
/******************************************************************************
|
||||
* evtchn.h
|
||||
*
|
||||
* Interface to /dev/xen/evtchn.
|
||||
*
|
||||
* Copyright (c) 2003-2005, K A Fraser
|
||||
*
|
||||
* 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_EVTCHN_H__
|
||||
#define __LINUX_PUBLIC_EVTCHN_H__
|
||||
|
||||
/*
|
||||
* Bind a fresh port to VIRQ @virq.
|
||||
* Return allocated port.
|
||||
*/
|
||||
#define IOCTL_EVTCHN_BIND_VIRQ \
|
||||
_IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq))
|
||||
struct ioctl_evtchn_bind_virq {
|
||||
unsigned int virq;
|
||||
};
|
||||
|
||||
/*
|
||||
* Bind a fresh port to remote <@remote_domain, @remote_port>.
|
||||
* Return allocated port.
|
||||
*/
|
||||
#define IOCTL_EVTCHN_BIND_INTERDOMAIN \
|
||||
_IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain))
|
||||
struct ioctl_evtchn_bind_interdomain {
|
||||
unsigned int remote_domain, remote_port;
|
||||
};
|
||||
|
||||
/*
|
||||
* Allocate a fresh port for binding to @remote_domain.
|
||||
* Return allocated port.
|
||||
*/
|
||||
#define IOCTL_EVTCHN_BIND_UNBOUND_PORT \
|
||||
_IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port))
|
||||
struct ioctl_evtchn_bind_unbound_port {
|
||||
unsigned int remote_domain;
|
||||
};
|
||||
|
||||
/*
|
||||
* Unbind previously allocated @port.
|
||||
*/
|
||||
#define IOCTL_EVTCHN_UNBIND \
|
||||
_IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind))
|
||||
struct ioctl_evtchn_unbind {
|
||||
unsigned int port;
|
||||
};
|
||||
|
||||
/*
|
||||
* Unbind previously allocated @port.
|
||||
*/
|
||||
#define IOCTL_EVTCHN_NOTIFY \
|
||||
_IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify))
|
||||
struct ioctl_evtchn_notify {
|
||||
unsigned int port;
|
||||
};
|
||||
|
||||
/* Clear and reinitialise the event buffer. Clear error condition. */
|
||||
#define IOCTL_EVTCHN_RESET \
|
||||
_IOC(_IOC_NONE, 'E', 5, 0)
|
||||
|
||||
#endif /* __LINUX_PUBLIC_EVTCHN_H__ */
|
||||
|
|
@ -57,4 +57,7 @@ struct xen_feature_info {
|
|||
/* Declares the features reported by XENVER_get_features. */
|
||||
#include "features.h"
|
||||
|
||||
/* arg == NULL; returns host memory page size. */
|
||||
#define XENVER_pagesize 7
|
||||
|
||||
#endif /* __XEN_PUBLIC_VERSION_H__ */
|
||||
|
|
|
|||
|
|
@ -91,8 +91,7 @@ struct xenbus_driver {
|
|||
void (*otherend_changed)(struct xenbus_device *dev,
|
||||
enum xenbus_state backend_state);
|
||||
int (*remove)(struct xenbus_device *dev);
|
||||
int (*suspend)(struct xenbus_device *dev);
|
||||
int (*suspend_cancel)(struct xenbus_device *dev);
|
||||
int (*suspend)(struct xenbus_device *dev, pm_message_t state);
|
||||
int (*resume)(struct xenbus_device *dev);
|
||||
int (*uevent)(struct xenbus_device *, char **, int, char *, int);
|
||||
struct device_driver driver;
|
||||
|
|
|
|||
Loading…
Reference in New Issue