2009-07-14 01:02:34 +02:00
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/*
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* Copyright (c) 2009, Microsoft Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Authors:
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* Haiyang Zhang <haiyangz@microsoft.com>
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* Hank Janssen <hjanssen@microsoft.com>
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/irq.h>
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#include <linux/interrupt.h>
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#include <linux/sysctl.h>
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2010-02-26 01:42:10 +01:00
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#include <linux/pci.h>
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2010-02-26 01:43:15 +01:00
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#include <linux/dmi.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 09:04:11 +01:00
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#include <linux/slab.h>
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2010-05-29 01:22:44 +02:00
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#include <linux/completion.h>
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2010-05-06 07:52:28 +02:00
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#include "version_info.h"
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2011-02-11 19:00:12 +01:00
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#include "hv_api.h"
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2009-08-29 01:22:59 +02:00
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#include "logging.h"
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2009-08-20 01:21:28 +02:00
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#include "vmbus.h"
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2010-10-21 01:07:11 +02:00
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#include "channel.h"
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2010-12-02 20:59:22 +01:00
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#include "vmbus_private.h"
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2009-07-14 01:02:34 +02:00
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2009-07-27 22:47:24 +02:00
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/* FIXME! We need to do this dynamically for PIC and APIC system */
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2009-09-02 16:11:14 +02:00
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#define VMBUS_IRQ 0x5
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#define VMBUS_IRQ_VECTOR IRQ5_VECTOR
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2009-07-27 22:47:24 +02:00
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/* Main vmbus driver data structure */
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2009-07-14 01:02:34 +02:00
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struct vmbus_driver_context {
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2009-09-02 16:11:14 +02:00
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struct bus_type bus;
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struct tasklet_struct msg_dpc;
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struct tasklet_struct event_dpc;
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2009-07-14 01:02:34 +02:00
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2009-07-27 22:47:24 +02:00
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/* The bus root device */
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2011-03-07 22:35:48 +01:00
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struct hv_device device_ctx;
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2009-07-14 01:02:34 +02:00
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};
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static int vmbus_match(struct device *device, struct device_driver *driver);
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static int vmbus_probe(struct device *device);
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static int vmbus_remove(struct device *device);
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static void vmbus_shutdown(struct device *device);
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static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env);
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static void vmbus_msg_dpc(unsigned long data);
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static void vmbus_event_dpc(unsigned long data);
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2009-09-02 16:11:14 +02:00
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static irqreturn_t vmbus_isr(int irq, void *dev_id);
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2009-07-14 01:02:34 +02:00
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static void vmbus_device_release(struct device *device);
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static void vmbus_bus_release(struct device *device);
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2009-09-02 16:11:14 +02:00
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static ssize_t vmbus_show_device_attr(struct device *dev,
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struct device_attribute *dev_attr,
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char *buf);
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2009-07-14 01:02:34 +02:00
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2009-09-02 16:11:14 +02:00
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unsigned int vmbus_loglevel = (ALL_MODULES << 16 | INFO_LVL);
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2009-07-14 01:02:34 +02:00
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EXPORT_SYMBOL(vmbus_loglevel);
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2009-09-02 16:11:14 +02:00
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/* (ALL_MODULES << 16 | DEBUG_LVL_ENTEREXIT); */
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/* (((VMBUS | VMBUS_DRV)<<16) | DEBUG_LVL_ENTEREXIT); */
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2009-07-14 01:02:34 +02:00
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static int vmbus_irq = VMBUS_IRQ;
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2009-07-27 22:47:24 +02:00
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/* Set up per device attributes in /sys/bus/vmbus/devices/<bus device> */
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2009-07-14 01:02:34 +02:00
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static struct device_attribute vmbus_device_attrs[] = {
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__ATTR(id, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(state, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(class_id, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(device_id, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(monitor_id, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(server_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(server_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(server_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(client_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(client_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(client_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(out_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(out_read_index, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(out_write_index, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(out_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(out_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(in_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(in_read_index, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(in_write_index, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(in_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR(in_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL),
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__ATTR_NULL
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};
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2009-07-27 22:47:24 +02:00
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/* The one and only one */
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2011-01-26 21:12:09 +01:00
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static struct vmbus_driver_context vmbus_drv = {
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2009-09-02 16:11:14 +02:00
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.bus.name = "vmbus",
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.bus.match = vmbus_match,
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.bus.shutdown = vmbus_shutdown,
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.bus.remove = vmbus_remove,
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.bus.probe = vmbus_probe,
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.bus.uevent = vmbus_uevent,
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.bus.dev_attrs = vmbus_device_attrs,
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2009-07-14 01:02:34 +02:00
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};
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2011-01-26 21:12:09 +01:00
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static const char *driver_name = "hyperv";
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2010-12-02 20:59:22 +01:00
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/*
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* Windows vmbus does not defined this.
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* We defined this to be consistent with other devices
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*/
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/* {c5295816-f63a-4d5f-8d1a-4daf999ca185} */
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2011-01-26 21:12:09 +01:00
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static const struct hv_guid device_type = {
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2010-12-02 20:59:22 +01:00
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.data = {
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0x16, 0x58, 0x29, 0xc5, 0x3a, 0xf6, 0x5f, 0x4d,
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0x8d, 0x1a, 0x4d, 0xaf, 0x99, 0x9c, 0xa1, 0x85
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}
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};
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/* {ac3760fc-9adf-40aa-9427-a70ed6de95c5} */
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2011-01-26 21:12:09 +01:00
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static const struct hv_guid device_id = {
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2010-12-02 20:59:22 +01:00
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.data = {
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0xfc, 0x60, 0x37, 0xac, 0xdf, 0x9a, 0xaa, 0x40,
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0x94, 0x27, 0xa7, 0x0e, 0xd6, 0xde, 0x95, 0xc5
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}
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};
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2011-01-26 21:12:09 +01:00
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static struct hv_device *vmbus_device; /* vmbus root device */
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2010-12-02 20:59:22 +01:00
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/*
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2011-01-26 21:12:10 +01:00
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* vmbus_child_dev_add - Registers the child device with the vmbus
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2010-12-02 20:59:22 +01:00
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*/
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2011-01-26 21:12:10 +01:00
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int vmbus_child_dev_add(struct hv_device *child_dev)
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2010-12-02 20:59:22 +01:00
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{
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2011-01-26 21:12:09 +01:00
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return vmbus_child_device_register(vmbus_device, child_dev);
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2010-12-02 20:59:22 +01:00
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}
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/*
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2011-01-26 21:12:10 +01:00
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* vmbus_dev_add - Callback when the root bus device is added
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2010-12-02 20:59:22 +01:00
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*/
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2011-01-26 21:12:10 +01:00
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static int vmbus_dev_add(struct hv_device *dev, void *info)
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2010-12-02 20:59:22 +01:00
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{
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2011-01-26 21:12:09 +01:00
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u32 *irqvector = info;
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2010-12-02 20:59:22 +01:00
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int ret;
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2011-01-26 21:12:09 +01:00
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vmbus_device = dev;
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2010-12-02 20:59:22 +01:00
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2011-01-26 21:12:11 +01:00
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memcpy(&vmbus_device->dev_type, &device_type, sizeof(struct hv_guid));
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memcpy(&vmbus_device->dev_instance, &device_id,
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2010-12-02 20:59:22 +01:00
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sizeof(struct hv_guid));
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/* strcpy(dev->name, "vmbus"); */
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/* SynIC setup... */
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on_each_cpu(hv_synic_init, (void *)irqvector, 1);
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/* Connect to VMBus in the root partition */
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2011-01-26 21:12:08 +01:00
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ret = vmbus_connect();
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2010-12-02 20:59:22 +01:00
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/* VmbusSendEvent(device->localPortId+1); */
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return ret;
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}
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/*
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2011-01-26 21:12:10 +01:00
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* vmbus_dev_rm - Callback when the root bus device is removed
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2010-12-02 20:59:22 +01:00
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*/
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2011-01-26 21:12:10 +01:00
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static int vmbus_dev_rm(struct hv_device *dev)
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2010-12-02 20:59:22 +01:00
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{
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int ret = 0;
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vmbus_release_unattached_channels();
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2011-01-26 21:12:08 +01:00
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vmbus_disconnect();
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2010-12-02 20:59:22 +01:00
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on_each_cpu(hv_synic_cleanup, NULL, 1);
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return ret;
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}
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/*
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2011-01-26 21:12:10 +01:00
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* vmbus_cleanup - Perform any cleanup when the driver is removed
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2010-12-02 20:59:22 +01:00
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*/
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2011-03-10 23:04:29 +01:00
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static void vmbus_cleanup(void)
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2010-12-02 20:59:22 +01:00
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{
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hv_cleanup();
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}
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2010-12-15 19:48:08 +01:00
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struct onmessage_work_context {
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struct work_struct work;
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struct hv_message msg;
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};
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static void vmbus_onmessage_work(struct work_struct *work)
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{
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struct onmessage_work_context *ctx;
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ctx = container_of(work, struct onmessage_work_context,
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work);
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vmbus_onmessage(&ctx->msg);
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kfree(ctx);
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}
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2010-12-02 20:59:22 +01:00
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/*
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* vmbus_on_msg_dpc - DPC routine to handle messages from the hypervisior
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*/
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2010-12-02 21:11:25 +01:00
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static void vmbus_on_msg_dpc(struct hv_driver *drv)
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2010-12-02 20:59:22 +01:00
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{
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int cpu = smp_processor_id();
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void *page_addr = hv_context.synic_message_page[cpu];
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struct hv_message *msg = (struct hv_message *)page_addr +
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VMBUS_MESSAGE_SINT;
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2010-12-15 19:48:08 +01:00
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struct onmessage_work_context *ctx;
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2010-12-02 20:59:22 +01:00
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while (1) {
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if (msg->header.message_type == HVMSG_NONE) {
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/* no msg */
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break;
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} else {
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2010-12-15 19:48:08 +01:00
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ctx = kmalloc(sizeof(*ctx), GFP_ATOMIC);
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if (ctx == NULL)
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2010-12-02 20:59:22 +01:00
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continue;
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2010-12-15 19:48:08 +01:00
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INIT_WORK(&ctx->work, vmbus_onmessage_work);
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memcpy(&ctx->msg, msg, sizeof(*msg));
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2011-01-26 21:12:14 +01:00
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queue_work(vmbus_connection.work_queue, &ctx->work);
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2010-12-02 20:59:22 +01:00
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}
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msg->header.message_type = HVMSG_NONE;
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/*
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* Make sure the write to MessageType (ie set to
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* HVMSG_NONE) happens before we read the
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* MessagePending and EOMing. Otherwise, the EOMing
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|
|
|
* will not deliver any more messages since there is
|
|
|
|
* no empty slot
|
|
|
|
*/
|
|
|
|
mb();
|
|
|
|
|
|
|
|
if (msg->header.message_flags.msg_pending) {
|
|
|
|
/*
|
|
|
|
* This will cause message queue rescan to
|
|
|
|
* possibly deliver another msg from the
|
|
|
|
* hypervisor
|
|
|
|
*/
|
|
|
|
wrmsrl(HV_X64_MSR_EOM, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* vmbus_on_isr - ISR routine
|
|
|
|
*/
|
2010-12-02 21:11:25 +01:00
|
|
|
static int vmbus_on_isr(struct hv_driver *drv)
|
2010-12-02 20:59:22 +01:00
|
|
|
{
|
|
|
|
int ret = 0;
|
|
|
|
int cpu = smp_processor_id();
|
|
|
|
void *page_addr;
|
|
|
|
struct hv_message *msg;
|
|
|
|
union hv_synic_event_flags *event;
|
|
|
|
|
|
|
|
page_addr = hv_context.synic_message_page[cpu];
|
|
|
|
msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
|
|
|
|
|
|
|
|
/* Check if there are actual msgs to be process */
|
|
|
|
if (msg->header.message_type != HVMSG_NONE) {
|
|
|
|
DPRINT_DBG(VMBUS, "received msg type %d size %d",
|
|
|
|
msg->header.message_type,
|
|
|
|
msg->header.payload_size);
|
|
|
|
ret |= 0x1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* TODO: Check if there are events to be process */
|
|
|
|
page_addr = hv_context.synic_event_page[cpu];
|
|
|
|
event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT;
|
|
|
|
|
|
|
|
/* Since we are a child, we only need to check bit 0 */
|
|
|
|
if (test_and_clear_bit(0, (unsigned long *) &event->flags32[0])) {
|
|
|
|
DPRINT_DBG(VMBUS, "received event %d", event->flags32[0]);
|
|
|
|
ret |= 0x2;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-10-21 01:07:11 +02:00
|
|
|
static void get_channel_info(struct hv_device *device,
|
|
|
|
struct hv_device_info *info)
|
|
|
|
{
|
|
|
|
struct vmbus_channel_debug_info debug_info;
|
|
|
|
|
2010-10-21 18:05:27 +02:00
|
|
|
if (!device->channel)
|
2010-10-21 01:07:11 +02:00
|
|
|
return;
|
|
|
|
|
2010-10-21 18:05:27 +02:00
|
|
|
vmbus_get_debug_info(device->channel, &debug_info);
|
2010-10-21 01:07:11 +02:00
|
|
|
|
2011-01-26 21:12:11 +01:00
|
|
|
info->chn_id = debug_info.relid;
|
|
|
|
info->chn_state = debug_info.state;
|
|
|
|
memcpy(&info->chn_type, &debug_info.interfacetype,
|
2010-10-21 01:07:11 +02:00
|
|
|
sizeof(struct hv_guid));
|
2011-01-26 21:12:11 +01:00
|
|
|
memcpy(&info->chn_instance, &debug_info.interface_instance,
|
2010-10-21 01:07:11 +02:00
|
|
|
sizeof(struct hv_guid));
|
|
|
|
|
2011-01-26 21:12:11 +01:00
|
|
|
info->monitor_id = debug_info.monitorid;
|
2010-10-21 01:07:11 +02:00
|
|
|
|
2011-01-26 21:12:11 +01:00
|
|
|
info->server_monitor_pending = debug_info.servermonitor_pending;
|
|
|
|
info->server_monitor_latency = debug_info.servermonitor_latency;
|
|
|
|
info->server_monitor_conn_id = debug_info.servermonitor_connectionid;
|
2010-10-21 01:07:11 +02:00
|
|
|
|
2011-01-26 21:12:11 +01:00
|
|
|
info->client_monitor_pending = debug_info.clientmonitor_pending;
|
|
|
|
info->client_monitor_latency = debug_info.clientmonitor_latency;
|
|
|
|
info->client_monitor_conn_id = debug_info.clientmonitor_connectionid;
|
2010-10-21 01:07:11 +02:00
|
|
|
|
2011-01-26 21:12:11 +01:00
|
|
|
info->inbound.int_mask = debug_info.inbound.current_interrupt_mask;
|
|
|
|
info->inbound.read_idx = debug_info.inbound.current_read_index;
|
|
|
|
info->inbound.write_idx = debug_info.inbound.current_write_index;
|
|
|
|
info->inbound.bytes_avail_toread =
|
|
|
|
debug_info.inbound.bytes_avail_toread;
|
|
|
|
info->inbound.bytes_avail_towrite =
|
2010-11-08 23:04:45 +01:00
|
|
|
debug_info.inbound.bytes_avail_towrite;
|
|
|
|
|
2011-01-26 21:12:11 +01:00
|
|
|
info->outbound.int_mask =
|
2010-11-08 23:04:45 +01:00
|
|
|
debug_info.outbound.current_interrupt_mask;
|
2011-01-26 21:12:11 +01:00
|
|
|
info->outbound.read_idx = debug_info.outbound.current_read_index;
|
|
|
|
info->outbound.write_idx = debug_info.outbound.current_write_index;
|
|
|
|
info->outbound.bytes_avail_toread =
|
2010-11-08 23:04:45 +01:00
|
|
|
debug_info.outbound.bytes_avail_toread;
|
2011-01-26 21:12:11 +01:00
|
|
|
info->outbound.bytes_avail_towrite =
|
2010-11-08 23:04:45 +01:00
|
|
|
debug_info.outbound.bytes_avail_towrite;
|
2010-10-21 01:07:11 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_show_device_attr - Show the device attribute in sysfs.
|
|
|
|
*
|
|
|
|
* This is invoked when user does a
|
|
|
|
* "cat /sys/bus/vmbus/devices/<busdevice>/<attr name>"
|
|
|
|
*/
|
|
|
|
static ssize_t vmbus_show_device_attr(struct device *dev,
|
|
|
|
struct device_attribute *dev_attr,
|
|
|
|
char *buf)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *device_ctx = device_to_hv_device(dev);
|
2009-08-20 21:17:36 +02:00
|
|
|
struct hv_device_info device_info;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-08-20 21:17:36 +02:00
|
|
|
memset(&device_info, 0, sizeof(struct hv_device_info));
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-07 22:35:48 +01:00
|
|
|
get_channel_info(device_ctx, &device_info);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
if (!strcmp(dev_attr->attr.name, "class_id")) {
|
|
|
|
return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-"
|
|
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x}\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.chn_type.data[3],
|
|
|
|
device_info.chn_type.data[2],
|
|
|
|
device_info.chn_type.data[1],
|
|
|
|
device_info.chn_type.data[0],
|
|
|
|
device_info.chn_type.data[5],
|
|
|
|
device_info.chn_type.data[4],
|
|
|
|
device_info.chn_type.data[7],
|
|
|
|
device_info.chn_type.data[6],
|
|
|
|
device_info.chn_type.data[8],
|
|
|
|
device_info.chn_type.data[9],
|
|
|
|
device_info.chn_type.data[10],
|
|
|
|
device_info.chn_type.data[11],
|
|
|
|
device_info.chn_type.data[12],
|
|
|
|
device_info.chn_type.data[13],
|
|
|
|
device_info.chn_type.data[14],
|
|
|
|
device_info.chn_type.data[15]);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "device_id")) {
|
|
|
|
return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-"
|
|
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x}\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.chn_instance.data[3],
|
|
|
|
device_info.chn_instance.data[2],
|
|
|
|
device_info.chn_instance.data[1],
|
|
|
|
device_info.chn_instance.data[0],
|
|
|
|
device_info.chn_instance.data[5],
|
|
|
|
device_info.chn_instance.data[4],
|
|
|
|
device_info.chn_instance.data[7],
|
|
|
|
device_info.chn_instance.data[6],
|
|
|
|
device_info.chn_instance.data[8],
|
|
|
|
device_info.chn_instance.data[9],
|
|
|
|
device_info.chn_instance.data[10],
|
|
|
|
device_info.chn_instance.data[11],
|
|
|
|
device_info.chn_instance.data[12],
|
|
|
|
device_info.chn_instance.data[13],
|
|
|
|
device_info.chn_instance.data[14],
|
|
|
|
device_info.chn_instance.data[15]);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "state")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.chn_state);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "id")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.chn_id);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "out_intr_mask")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.outbound.int_mask);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "out_read_index")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.outbound.read_idx);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "out_write_index")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.outbound.write_idx);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "out_read_bytes_avail")) {
|
|
|
|
return sprintf(buf, "%d\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.outbound.bytes_avail_toread);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "out_write_bytes_avail")) {
|
|
|
|
return sprintf(buf, "%d\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.outbound.bytes_avail_towrite);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "in_intr_mask")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.inbound.int_mask);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "in_read_index")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.inbound.read_idx);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "in_write_index")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.inbound.write_idx);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "in_read_bytes_avail")) {
|
|
|
|
return sprintf(buf, "%d\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.inbound.bytes_avail_toread);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "in_write_bytes_avail")) {
|
|
|
|
return sprintf(buf, "%d\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.inbound.bytes_avail_towrite);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "monitor_id")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.monitor_id);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "server_monitor_pending")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.server_monitor_pending);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "server_monitor_latency")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.server_monitor_latency);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "server_monitor_conn_id")) {
|
|
|
|
return sprintf(buf, "%d\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.server_monitor_conn_id);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "client_monitor_pending")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.client_monitor_pending);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "client_monitor_latency")) {
|
2011-01-26 21:12:11 +01:00
|
|
|
return sprintf(buf, "%d\n", device_info.client_monitor_latency);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else if (!strcmp(dev_attr->attr.name, "client_monitor_conn_id")) {
|
|
|
|
return sprintf(buf, "%d\n",
|
2011-01-26 21:12:11 +01:00
|
|
|
device_info.client_monitor_conn_id);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else {
|
2009-07-14 01:02:34 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_bus_init -Main vmbus driver initialization routine.
|
|
|
|
*
|
|
|
|
* Here, we
|
2010-03-11 23:51:23 +01:00
|
|
|
* - initialize the vmbus driver context
|
|
|
|
* - setup various driver entry points
|
|
|
|
* - invoke the vmbus hv main init routine
|
|
|
|
* - get the irq resource
|
|
|
|
* - invoke the vmbus to add the vmbus root device
|
|
|
|
* - setup the vmbus root device
|
|
|
|
* - retrieve the channel offers
|
2009-09-02 16:11:14 +02:00
|
|
|
*/
|
2010-12-02 21:04:00 +01:00
|
|
|
static int vmbus_bus_init(void)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2011-01-26 21:12:09 +01:00
|
|
|
struct vmbus_driver_context *vmbus_drv_ctx = &vmbus_drv;
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *dev_ctx = &vmbus_drv.device_ctx;
|
2009-09-02 16:11:14 +02:00
|
|
|
int ret;
|
|
|
|
unsigned int vector;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2010-12-02 21:08:08 +01:00
|
|
|
DPRINT_INFO(VMBUS, "+++++++ HV Driver version = %s +++++++",
|
|
|
|
HV_DRV_VERSION);
|
|
|
|
DPRINT_INFO(VMBUS, "+++++++ Vmbus supported version = %d +++++++",
|
|
|
|
VMBUS_REVISION_NUMBER);
|
|
|
|
DPRINT_INFO(VMBUS, "+++++++ Vmbus using SINT %d +++++++",
|
|
|
|
VMBUS_MESSAGE_SINT);
|
|
|
|
DPRINT_DBG(VMBUS, "sizeof(vmbus_channel_packet_page_buffer)=%zd, "
|
|
|
|
"sizeof(VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER)=%zd",
|
|
|
|
sizeof(struct vmbus_channel_packet_page_buffer),
|
|
|
|
sizeof(struct vmbus_channel_packet_multipage_buffer));
|
|
|
|
|
|
|
|
|
|
|
|
/* Hypervisor initialization...setup hypercall page..etc */
|
|
|
|
ret = hv_init();
|
2009-09-02 16:11:14 +02:00
|
|
|
if (ret != 0) {
|
2010-12-02 21:08:08 +01:00
|
|
|
DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x",
|
|
|
|
ret);
|
2009-07-14 01:02:34 +02:00
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-03-10 23:03:51 +01:00
|
|
|
vmbus_drv_ctx->bus.name = driver_name;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Initialize the bus context */
|
2009-09-02 16:11:14 +02:00
|
|
|
tasklet_init(&vmbus_drv_ctx->msg_dpc, vmbus_msg_dpc,
|
2011-03-10 23:03:51 +01:00
|
|
|
(unsigned long)NULL);
|
2009-09-02 16:11:14 +02:00
|
|
|
tasklet_init(&vmbus_drv_ctx->event_dpc, vmbus_event_dpc,
|
2011-03-10 23:03:51 +01:00
|
|
|
(unsigned long)NULL);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-10 23:03:51 +01:00
|
|
|
/* Now, register the bus with LDM */
|
2009-07-27 22:47:35 +02:00
|
|
|
ret = bus_register(&vmbus_drv_ctx->bus);
|
2009-09-02 16:11:14 +02:00
|
|
|
if (ret) {
|
2009-07-27 22:47:35 +02:00
|
|
|
ret = -1;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Get the interrupt resource */
|
2009-09-02 16:11:14 +02:00
|
|
|
ret = request_irq(vmbus_irq, vmbus_isr, IRQF_SAMPLE_RANDOM,
|
2011-03-10 23:03:51 +01:00
|
|
|
driver_name, NULL);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
if (ret != 0) {
|
|
|
|
DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to request IRQ %d",
|
|
|
|
vmbus_irq);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
bus_unregister(&vmbus_drv_ctx->bus);
|
|
|
|
|
|
|
|
ret = -1;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
vector = VMBUS_IRQ_VECTOR;
|
|
|
|
|
|
|
|
DPRINT_INFO(VMBUS_DRV, "irq 0x%x vector 0x%x", vmbus_irq, vector);
|
|
|
|
|
2011-03-10 23:03:51 +01:00
|
|
|
/* Add the root device */
|
2011-03-07 22:35:48 +01:00
|
|
|
memset(dev_ctx, 0, sizeof(struct hv_device));
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-10 23:03:51 +01:00
|
|
|
ret = vmbus_dev_add(dev_ctx, &vector);
|
2009-09-02 16:11:14 +02:00
|
|
|
if (ret != 0) {
|
|
|
|
DPRINT_ERR(VMBUS_DRV,
|
|
|
|
"ERROR - Unable to add vmbus root device");
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
free_irq(vmbus_irq, NULL);
|
|
|
|
|
|
|
|
bus_unregister(&vmbus_drv_ctx->bus);
|
|
|
|
|
|
|
|
ret = -1;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
2009-07-27 22:47:24 +02:00
|
|
|
/* strcpy(dev_ctx->device.bus_id, dev_ctx->device_obj.name); */
|
2009-07-14 02:09:34 +02:00
|
|
|
dev_set_name(&dev_ctx->device, "vmbus_0_0");
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* No need to bind a driver to the root device. */
|
2009-07-14 01:02:34 +02:00
|
|
|
dev_ctx->device.parent = NULL;
|
2009-09-02 16:11:14 +02:00
|
|
|
/* NULL; vmbus_remove() does not get invoked */
|
|
|
|
dev_ctx->device.bus = &vmbus_drv_ctx->bus;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Setup the device dispatch table */
|
2009-07-14 01:02:34 +02:00
|
|
|
dev_ctx->device.release = vmbus_bus_release;
|
|
|
|
|
2011-03-10 23:03:51 +01:00
|
|
|
/* register the root device */
|
2009-07-27 22:47:36 +02:00
|
|
|
ret = device_register(&dev_ctx->device);
|
2009-09-02 16:11:14 +02:00
|
|
|
if (ret) {
|
|
|
|
DPRINT_ERR(VMBUS_DRV,
|
|
|
|
"ERROR - Unable to register vmbus root device");
|
2009-07-27 22:47:36 +02:00
|
|
|
|
|
|
|
free_irq(vmbus_irq, NULL);
|
|
|
|
bus_unregister(&vmbus_drv_ctx->bus);
|
|
|
|
|
|
|
|
ret = -1;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
2010-12-02 17:50:58 +01:00
|
|
|
vmbus_request_offers();
|
2010-05-29 01:22:44 +02:00
|
|
|
wait_for_completion(&hv_channel_ready);
|
|
|
|
|
2009-07-14 01:02:34 +02:00
|
|
|
cleanup:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_bus_exit - Terminate the vmbus driver.
|
|
|
|
*
|
|
|
|
* This routine is opposite of vmbus_bus_init()
|
|
|
|
*/
|
2009-07-29 18:04:51 +02:00
|
|
|
static void vmbus_bus_exit(void)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2011-01-26 21:12:09 +01:00
|
|
|
struct vmbus_driver_context *vmbus_drv_ctx = &vmbus_drv;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *dev_ctx = &vmbus_drv.device_ctx;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Remove the root device */
|
2011-03-10 23:03:51 +01:00
|
|
|
vmbus_dev_rm(dev_ctx);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-10 23:04:29 +01:00
|
|
|
vmbus_cleanup();
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Unregister the root bus device */
|
2009-07-14 01:02:34 +02:00
|
|
|
device_unregister(&dev_ctx->device);
|
|
|
|
|
|
|
|
bus_unregister(&vmbus_drv_ctx->bus);
|
|
|
|
|
|
|
|
free_irq(vmbus_irq, NULL);
|
|
|
|
|
|
|
|
tasklet_kill(&vmbus_drv_ctx->msg_dpc);
|
|
|
|
tasklet_kill(&vmbus_drv_ctx->event_dpc);
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
/**
|
2010-03-04 23:11:00 +01:00
|
|
|
* vmbus_child_driver_register() - Register a vmbus's child driver
|
2011-03-07 22:23:43 +01:00
|
|
|
* @drv: Pointer to driver structure you want to register
|
2010-03-04 23:11:00 +01:00
|
|
|
*
|
|
|
|
*
|
|
|
|
* Registers the given driver with Linux through the 'driver_register()' call
|
|
|
|
* And sets up the hyper-v vmbus handling for this driver.
|
|
|
|
* It will return the state of the 'driver_register()' call.
|
|
|
|
*
|
|
|
|
* Mainly used by Hyper-V drivers.
|
2009-09-02 16:11:14 +02:00
|
|
|
*/
|
2011-03-07 22:23:43 +01:00
|
|
|
int vmbus_child_driver_register(struct device_driver *drv)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2009-07-27 22:47:36 +02:00
|
|
|
int ret;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_INFO(VMBUS_DRV, "child driver (%p) registering - name %s",
|
2011-03-07 22:23:43 +01:00
|
|
|
drv, drv->name);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* The child driver on this vmbus */
|
2011-03-07 22:23:43 +01:00
|
|
|
drv->bus = &vmbus_drv.bus;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-07 22:23:43 +01:00
|
|
|
ret = driver_register(drv);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2010-12-02 17:50:58 +01:00
|
|
|
vmbus_request_offers();
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:36 +02:00
|
|
|
return ret;
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(vmbus_child_driver_register);
|
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
/**
|
2010-03-04 23:11:00 +01:00
|
|
|
* vmbus_child_driver_unregister() - Unregister a vmbus's child driver
|
2011-03-07 22:24:23 +01:00
|
|
|
* @drv: Pointer to driver structure you want to un-register
|
2010-03-04 23:11:00 +01:00
|
|
|
*
|
|
|
|
*
|
|
|
|
* Un-register the given driver with Linux through the 'driver_unregister()'
|
|
|
|
* call. And ungegisters the driver from the Hyper-V vmbus handler.
|
|
|
|
*
|
|
|
|
* Mainly used by Hyper-V drivers.
|
2009-09-02 16:11:14 +02:00
|
|
|
*/
|
2011-03-07 22:24:23 +01:00
|
|
|
void vmbus_child_driver_unregister(struct device_driver *drv)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_INFO(VMBUS_DRV, "child driver (%p) unregistering - name %s",
|
2011-03-07 22:24:23 +01:00
|
|
|
drv, drv->name);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-07 22:24:23 +01:00
|
|
|
driver_unregister(drv);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2011-03-07 22:24:23 +01:00
|
|
|
drv->bus = NULL;
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(vmbus_child_driver_unregister);
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
|
|
|
* vmbus_child_device_create - Creates and registers a new child device
|
|
|
|
* on the vmbus.
|
2009-09-02 16:11:14 +02:00
|
|
|
*/
|
2010-12-02 17:22:41 +01:00
|
|
|
struct hv_device *vmbus_child_device_create(struct hv_guid *type,
|
|
|
|
struct hv_guid *instance,
|
|
|
|
struct vmbus_channel *channel)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2009-07-28 17:32:53 +02:00
|
|
|
struct hv_device *child_device_obj;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Allocate the new child device */
|
2011-03-07 22:35:48 +01:00
|
|
|
child_device_obj = kzalloc(sizeof(struct hv_device), GFP_KERNEL);
|
|
|
|
if (!child_device_obj) {
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_ERR(VMBUS_DRV,
|
|
|
|
"unable to allocate device_context for child device");
|
2009-07-14 01:02:34 +02:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
DPRINT_DBG(VMBUS_DRV, "child device (%p) allocated - "
|
2009-09-02 16:11:14 +02:00
|
|
|
"type {%02x%02x%02x%02x-%02x%02x-%02x%02x-"
|
|
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x},"
|
|
|
|
"id {%02x%02x%02x%02x-%02x%02x-%02x%02x-"
|
|
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x}",
|
2011-03-07 22:35:48 +01:00
|
|
|
&child_device_obj->device,
|
2009-08-20 01:18:56 +02:00
|
|
|
type->data[3], type->data[2], type->data[1], type->data[0],
|
|
|
|
type->data[5], type->data[4], type->data[7], type->data[6],
|
|
|
|
type->data[8], type->data[9], type->data[10], type->data[11],
|
|
|
|
type->data[12], type->data[13], type->data[14], type->data[15],
|
2009-09-02 16:11:14 +02:00
|
|
|
instance->data[3], instance->data[2],
|
|
|
|
instance->data[1], instance->data[0],
|
|
|
|
instance->data[5], instance->data[4],
|
|
|
|
instance->data[7], instance->data[6],
|
|
|
|
instance->data[8], instance->data[9],
|
|
|
|
instance->data[10], instance->data[11],
|
|
|
|
instance->data[12], instance->data[13],
|
|
|
|
instance->data[14], instance->data[15]);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2010-10-21 18:05:27 +02:00
|
|
|
child_device_obj->channel = channel;
|
2011-01-26 21:12:11 +01:00
|
|
|
memcpy(&child_device_obj->dev_type, type, sizeof(struct hv_guid));
|
|
|
|
memcpy(&child_device_obj->dev_instance, instance,
|
2009-09-02 16:11:14 +02:00
|
|
|
sizeof(struct hv_guid));
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
|
|
|
|
return child_device_obj;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_child_device_register - Register the child device on the specified bus
|
|
|
|
*/
|
2010-12-02 18:16:04 +01:00
|
|
|
int vmbus_child_device_register(struct hv_device *root_device_obj,
|
|
|
|
struct hv_device *child_device_obj)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2009-09-02 16:11:14 +02:00
|
|
|
int ret = 0;
|
2011-03-07 22:35:48 +01:00
|
|
|
|
2009-07-29 23:00:12 +02:00
|
|
|
static atomic_t device_num = ATOMIC_INIT(0);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_DBG(VMBUS_DRV, "child device (%p) registering",
|
2011-03-07 22:35:48 +01:00
|
|
|
child_device_obj);
|
2009-07-27 22:47:24 +02:00
|
|
|
|
2009-10-23 20:14:24 +02:00
|
|
|
/* Set the device name. Otherwise, device_register() will fail. */
|
2011-03-07 22:35:48 +01:00
|
|
|
dev_set_name(&child_device_obj->device, "vmbus_0_%d",
|
2009-09-02 16:11:14 +02:00
|
|
|
atomic_inc_return(&device_num));
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* The new device belongs to this bus */
|
2011-03-07 22:35:48 +01:00
|
|
|
child_device_obj->device.bus = &vmbus_drv.bus; /* device->dev.bus; */
|
|
|
|
child_device_obj->device.parent = &root_device_obj->device;
|
|
|
|
child_device_obj->device.release = vmbus_device_release;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
/*
|
|
|
|
* Register with the LDM. This will kick off the driver/device
|
|
|
|
* binding...which will eventually call vmbus_match() and vmbus_probe()
|
|
|
|
*/
|
2011-03-07 22:35:48 +01:00
|
|
|
ret = device_register(&child_device_obj->device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* vmbus_probe() error does not get propergate to device_register(). */
|
2011-03-07 22:35:48 +01:00
|
|
|
ret = child_device_obj->probe_error;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
if (ret)
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_ERR(VMBUS_DRV, "unable to register child device (%p)",
|
2011-03-07 22:35:48 +01:00
|
|
|
&child_device_obj->device);
|
2009-07-14 01:02:34 +02:00
|
|
|
else
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_INFO(VMBUS_DRV, "child device (%p) registered",
|
2011-03-07 22:35:48 +01:00
|
|
|
&child_device_obj->device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
|
|
|
* vmbus_child_device_unregister - Remove the specified child device
|
|
|
|
* from the vmbus.
|
2009-09-02 16:11:14 +02:00
|
|
|
*/
|
2010-12-02 17:34:45 +01:00
|
|
|
void vmbus_child_device_unregister(struct hv_device *device_obj)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_INFO(VMBUS_DRV, "unregistering child device (%p)",
|
2011-03-07 22:35:48 +01:00
|
|
|
&device_obj->device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
/*
|
|
|
|
* Kick off the process of unregistering the device.
|
|
|
|
* This will call vmbus_remove() and eventually vmbus_device_release()
|
|
|
|
*/
|
2011-03-07 22:35:48 +01:00
|
|
|
device_unregister(&device_obj->device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_INFO(VMBUS_DRV, "child device (%p) unregistered",
|
2011-03-07 22:35:48 +01:00
|
|
|
&device_obj->device);
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_uevent - add uevent for our device
|
|
|
|
*
|
|
|
|
* This routine is invoked when a device is added or removed on the vmbus to
|
|
|
|
* generate a uevent to udev in the userspace. The udev will then look at its
|
|
|
|
* rule and the uevent generated here to load the appropriate driver
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env)
|
|
|
|
{
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *dev = device_to_hv_device(device);
|
2009-07-14 01:02:34 +02:00
|
|
|
int ret;
|
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_INFO(VMBUS_DRV, "generating uevent - VMBUS_DEVICE_CLASS_GUID={"
|
|
|
|
"%02x%02x%02x%02x-%02x%02x-%02x%02x-"
|
|
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x}",
|
2011-03-07 22:35:10 +01:00
|
|
|
dev->dev_type.data[3], dev->dev_type.data[2],
|
|
|
|
dev->dev_type.data[1], dev->dev_type.data[0],
|
|
|
|
dev->dev_type.data[5], dev->dev_type.data[4],
|
|
|
|
dev->dev_type.data[7], dev->dev_type.data[6],
|
|
|
|
dev->dev_type.data[8], dev->dev_type.data[9],
|
|
|
|
dev->dev_type.data[10],
|
|
|
|
dev->dev_type.data[11],
|
|
|
|
dev->dev_type.data[12],
|
|
|
|
dev->dev_type.data[13],
|
|
|
|
dev->dev_type.data[14],
|
|
|
|
dev->dev_type.data[15]);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
ret = add_uevent_var(env, "VMBUS_DEVICE_CLASS_GUID={"
|
|
|
|
"%02x%02x%02x%02x-%02x%02x-%02x%02x-"
|
|
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x}",
|
2011-03-07 22:35:10 +01:00
|
|
|
dev->dev_type.data[3],
|
|
|
|
dev->dev_type.data[2],
|
|
|
|
dev->dev_type.data[1],
|
|
|
|
dev->dev_type.data[0],
|
|
|
|
dev->dev_type.data[5],
|
|
|
|
dev->dev_type.data[4],
|
|
|
|
dev->dev_type.data[7],
|
|
|
|
dev->dev_type.data[6],
|
|
|
|
dev->dev_type.data[8],
|
|
|
|
dev->dev_type.data[9],
|
|
|
|
dev->dev_type.data[10],
|
|
|
|
dev->dev_type.data[11],
|
|
|
|
dev->dev_type.data[12],
|
|
|
|
dev->dev_type.data[13],
|
|
|
|
dev->dev_type.data[14],
|
|
|
|
dev->dev_type.data[15]);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
ret = add_uevent_var(env, "VMBUS_DEVICE_DEVICE_GUID={"
|
|
|
|
"%02x%02x%02x%02x-%02x%02x-%02x%02x-"
|
|
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x}",
|
2011-03-07 22:35:30 +01:00
|
|
|
dev->dev_instance.data[3],
|
|
|
|
dev->dev_instance.data[2],
|
|
|
|
dev->dev_instance.data[1],
|
|
|
|
dev->dev_instance.data[0],
|
|
|
|
dev->dev_instance.data[5],
|
|
|
|
dev->dev_instance.data[4],
|
|
|
|
dev->dev_instance.data[7],
|
|
|
|
dev->dev_instance.data[6],
|
|
|
|
dev->dev_instance.data[8],
|
|
|
|
dev->dev_instance.data[9],
|
|
|
|
dev->dev_instance.data[10],
|
|
|
|
dev->dev_instance.data[11],
|
|
|
|
dev->dev_instance.data[12],
|
|
|
|
dev->dev_instance.data[13],
|
|
|
|
dev->dev_instance.data[14],
|
|
|
|
dev->dev_instance.data[15]);
|
2009-07-14 01:02:34 +02:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_match - Attempt to match the specified device to the specified driver
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static int vmbus_match(struct device *device, struct device_driver *driver)
|
|
|
|
{
|
2009-09-02 16:11:14 +02:00
|
|
|
int match = 0;
|
2011-03-07 22:32:31 +01:00
|
|
|
struct hv_driver *drv = drv_to_hv_drv(driver);
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *device_ctx = device_to_hv_device(device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* We found our driver ? */
|
2011-03-07 22:35:48 +01:00
|
|
|
if (memcmp(&device_ctx->dev_type, &drv->dev_type,
|
2009-09-02 16:11:14 +02:00
|
|
|
sizeof(struct hv_guid)) == 0) {
|
|
|
|
|
2011-03-07 22:35:48 +01:00
|
|
|
device_ctx->drv = drv->priv;
|
2009-09-02 16:11:14 +02:00
|
|
|
DPRINT_INFO(VMBUS_DRV,
|
|
|
|
"device object (%p) set to driver object (%p)",
|
2011-03-07 22:35:48 +01:00
|
|
|
&device_ctx,
|
|
|
|
device_ctx->drv);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
match = 1;
|
|
|
|
}
|
|
|
|
return match;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_probe_failed_cb - Callback when a driver probe failed in vmbus_probe()
|
|
|
|
*
|
|
|
|
* We need a callback because we cannot invoked device_unregister() inside
|
|
|
|
* vmbus_probe() since vmbus_probe() may be invoked inside device_register()
|
|
|
|
* i.e. we cannot call device_unregister() inside device_register()
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static void vmbus_probe_failed_cb(struct work_struct *context)
|
|
|
|
{
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *device_ctx = (struct hv_device *)context;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
/*
|
|
|
|
* Kick off the process of unregistering the device.
|
|
|
|
* This will call vmbus_remove() and eventually vmbus_device_release()
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
device_unregister(&device_ctx->device);
|
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* put_device(&device_ctx->device); */
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_probe - Add the new vmbus's child device
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static int vmbus_probe(struct device *child_device)
|
|
|
|
{
|
2009-09-02 16:11:14 +02:00
|
|
|
int ret = 0;
|
2011-03-07 22:32:31 +01:00
|
|
|
struct hv_driver *drv =
|
|
|
|
drv_to_hv_drv(child_device->driver);
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *dev = device_to_hv_device(child_device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Let the specific open-source driver handles the probe if it can */
|
2011-03-07 22:32:31 +01:00
|
|
|
if (drv->driver.probe) {
|
2011-03-07 22:35:48 +01:00
|
|
|
ret = dev->probe_error =
|
2011-03-07 22:32:31 +01:00
|
|
|
drv->driver.probe(child_device);
|
2009-09-02 16:11:14 +02:00
|
|
|
if (ret != 0) {
|
|
|
|
DPRINT_ERR(VMBUS_DRV, "probe() failed for device %s "
|
|
|
|
"(%p) on driver %s (%d)...",
|
|
|
|
dev_name(child_device), child_device,
|
|
|
|
child_device->driver->name, ret);
|
|
|
|
|
2011-03-07 22:34:27 +01:00
|
|
|
INIT_WORK(&dev->probe_failed_work_item,
|
2009-09-02 16:11:14 +02:00
|
|
|
vmbus_probe_failed_cb);
|
2011-03-07 22:34:27 +01:00
|
|
|
schedule_work(&dev->probe_failed_work_item);
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
2009-09-02 16:11:14 +02:00
|
|
|
} else {
|
|
|
|
DPRINT_ERR(VMBUS_DRV, "probe() method not set for driver - %s",
|
|
|
|
child_device->driver->name);
|
2009-07-14 01:02:34 +02:00
|
|
|
ret = -1;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_remove - Remove a vmbus device
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static int vmbus_remove(struct device *child_device)
|
|
|
|
{
|
2009-09-02 16:11:14 +02:00
|
|
|
int ret;
|
2011-03-07 22:32:31 +01:00
|
|
|
struct hv_driver *drv;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Special case root bus device */
|
2009-09-02 16:11:14 +02:00
|
|
|
if (child_device->parent == NULL) {
|
|
|
|
/*
|
|
|
|
* No-op since it is statically defined and handle in
|
|
|
|
* vmbus_bus_exit()
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
if (child_device->driver) {
|
2011-03-07 22:32:31 +01:00
|
|
|
drv = drv_to_hv_drv(child_device->driver);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
/*
|
|
|
|
* Let the specific open-source driver handles the removal if
|
|
|
|
* it can
|
|
|
|
*/
|
2011-03-07 22:32:31 +01:00
|
|
|
if (drv->driver.remove) {
|
|
|
|
ret = drv->driver.remove(child_device);
|
2009-09-02 16:11:14 +02:00
|
|
|
} else {
|
|
|
|
DPRINT_ERR(VMBUS_DRV,
|
|
|
|
"remove() method not set for driver - %s",
|
|
|
|
child_device->driver->name);
|
2009-07-14 01:02:34 +02:00
|
|
|
ret = -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_shutdown - Shutdown a vmbus device
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static void vmbus_shutdown(struct device *child_device)
|
|
|
|
{
|
2011-03-07 22:32:31 +01:00
|
|
|
struct hv_driver *drv;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Special case root bus device */
|
2009-09-02 16:11:14 +02:00
|
|
|
if (child_device->parent == NULL) {
|
|
|
|
/*
|
|
|
|
* No-op since it is statically defined and handle in
|
|
|
|
* vmbus_bus_exit()
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* The device may not be attached yet */
|
2010-07-23 00:14:04 +02:00
|
|
|
if (!child_device->driver)
|
2009-07-14 01:02:34 +02:00
|
|
|
return;
|
|
|
|
|
2011-03-07 22:32:31 +01:00
|
|
|
drv = drv_to_hv_drv(child_device->driver);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Let the specific open-source driver handles the removal if it can */
|
2011-03-07 22:32:31 +01:00
|
|
|
if (drv->driver.shutdown)
|
|
|
|
drv->driver.shutdown(child_device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_bus_release - Final callback release of the vmbus root device
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static void vmbus_bus_release(struct device *device)
|
|
|
|
{
|
2009-09-02 05:12:58 +02:00
|
|
|
/* FIXME */
|
|
|
|
/* Empty release functions are a bug, or a major sign
|
|
|
|
* of a problem design, this MUST BE FIXED! */
|
|
|
|
dev_err(device, "%s needs to be fixed!\n", __func__);
|
|
|
|
WARN_ON(1);
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_device_release - Final callback release of the vmbus child device
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static void vmbus_device_release(struct device *device)
|
|
|
|
{
|
2011-03-07 22:35:48 +01:00
|
|
|
struct hv_device *device_ctx = device_to_hv_device(device);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
kfree(device_ctx);
|
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* !!DO NOT REFERENCE device_ctx anymore at this point!! */
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2009-09-02 16:11:14 +02:00
|
|
|
* vmbus_msg_dpc - Tasklet routine to handle hypervisor messages
|
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static void vmbus_msg_dpc(unsigned long data)
|
|
|
|
{
|
2010-12-02 18:42:18 +01:00
|
|
|
struct hv_driver *driver = (struct hv_driver *)data;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Call to bus driver to handle interrupt */
|
2010-12-02 18:42:18 +01:00
|
|
|
vmbus_on_msg_dpc(driver);
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
|
2010-03-04 23:11:00 +01:00
|
|
|
/*
|
2010-12-02 17:44:48 +01:00
|
|
|
* vmbus_event_dpc - Tasklet routine to handle hypervisor events
|
2009-09-02 16:11:14 +02:00
|
|
|
*/
|
2009-07-14 01:02:34 +02:00
|
|
|
static void vmbus_event_dpc(unsigned long data)
|
|
|
|
{
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Call to bus driver to handle interrupt */
|
2011-01-26 21:12:08 +01:00
|
|
|
vmbus_on_event();
|
2009-07-14 01:02:34 +02:00
|
|
|
}
|
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
static irqreturn_t vmbus_isr(int irq, void *dev_id)
|
2009-07-14 01:02:34 +02:00
|
|
|
{
|
2009-09-02 16:11:14 +02:00
|
|
|
int ret;
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Call to bus driver to handle interrupt */
|
2011-03-10 23:03:51 +01:00
|
|
|
ret = vmbus_on_isr(NULL);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-07-27 22:47:24 +02:00
|
|
|
/* Schedules a dpc if necessary */
|
2009-09-02 16:11:14 +02:00
|
|
|
if (ret > 0) {
|
|
|
|
if (test_bit(0, (unsigned long *)&ret))
|
2011-01-26 21:12:09 +01:00
|
|
|
tasklet_schedule(&vmbus_drv.msg_dpc);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
2009-09-02 16:11:14 +02:00
|
|
|
if (test_bit(1, (unsigned long *)&ret))
|
2011-01-26 21:12:09 +01:00
|
|
|
tasklet_schedule(&vmbus_drv.event_dpc);
|
2009-07-14 01:02:34 +02:00
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
2009-09-02 16:11:14 +02:00
|
|
|
} else {
|
2009-07-14 01:02:34 +02:00
|
|
|
return IRQ_NONE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-02-26 01:43:15 +01:00
|
|
|
static struct dmi_system_id __initdata microsoft_hv_dmi_table[] = {
|
|
|
|
{
|
|
|
|
.ident = "Hyper-V",
|
|
|
|
.matches = {
|
|
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
|
|
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
|
|
|
|
DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"),
|
|
|
|
},
|
|
|
|
},
|
|
|
|
{ },
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(dmi, microsoft_hv_dmi_table);
|
|
|
|
|
2009-07-14 01:02:34 +02:00
|
|
|
static int __init vmbus_init(void)
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{
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DPRINT_INFO(VMBUS_DRV,
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"Vmbus initializing.... current log level 0x%x (%x,%x)",
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vmbus_loglevel, HIWORD(vmbus_loglevel), LOWORD(vmbus_loglevel));
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2009-09-02 16:11:14 +02:00
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/* Todo: it is used for loglevel, to be ported to new kernel. */
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2009-07-14 01:02:34 +02:00
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2010-02-26 01:43:15 +01:00
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if (!dmi_check_system(microsoft_hv_dmi_table))
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return -ENODEV;
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2010-12-02 21:04:00 +01:00
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return vmbus_bus_init();
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2009-07-14 01:02:34 +02:00
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}
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static void __exit vmbus_exit(void)
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{
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vmbus_bus_exit();
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2009-09-02 16:11:14 +02:00
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/* Todo: it is used for loglevel, to be ported to new kernel. */
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2009-07-14 01:02:34 +02:00
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}
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2010-02-26 01:42:10 +01:00
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/*
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* We use a PCI table to determine if we should autoload this driver This is
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* needed by distro tools to determine if the hyperv drivers should be
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* installed and/or configured. We don't do anything else with the table, but
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* it needs to be present.
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*/
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2010-05-20 10:39:38 +02:00
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static const struct pci_device_id microsoft_hv_pci_table[] = {
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2010-02-26 01:42:10 +01:00
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{ PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table);
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2009-09-02 16:11:14 +02:00
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MODULE_LICENSE("GPL");
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2010-02-12 00:02:42 +01:00
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MODULE_VERSION(HV_DRV_VERSION);
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2009-07-14 01:02:34 +02:00
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module_param(vmbus_irq, int, S_IRUGO);
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module_param(vmbus_loglevel, int, S_IRUGO);
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module_init(vmbus_init);
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module_exit(vmbus_exit);
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