/*
- *
* Copyright (c) 2009, Microsoft Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* Hank Janssen <hjanssen@microsoft.com>
*
*/
-
#include <linux/kernel.h>
#include <linux/mm.h>
#include "osd.h"
#include "VersionInfo.h"
#include "VmbusPrivate.h"
+static const char *gDriverName = "vmbus";
-/* Globals */
-
-static const char* gDriverName="vmbus";
-
-/* Windows vmbus does not defined this.
+/*
+ * Windows vmbus does not defined this.
* We defined this to be consistent with other devices
*/
/* {c5295816-f63a-4d5f-8d1a-4daf999ca185} */
};
static struct hv_driver *gDriver; /* vmbus driver object */
-static struct hv_device* gDevice; /* vmbus root device */
-
-
-
-/* Internal routines */
-
+static struct hv_device *gDevice; /* vmbus root device */
static void VmbusGetChannelInterface(struct vmbus_channel_interface *Interface);
-
-static void
-VmbusGetChannelInfo(
- struct hv_device *DeviceObject,
- struct hv_device_info *DeviceInfo
- );
-
-static void
-VmbusGetChannelOffers(
- void
- );
-
-static int
-VmbusOnDeviceAdd(
- struct hv_device *Device,
- void *AdditionalInfo
- );
-
-static int
-VmbusOnDeviceRemove(
- struct hv_device *dev
- );
-
-static void
-VmbusOnCleanup(
- struct hv_driver *drv
- );
-
-static int
-VmbusOnISR(
- struct hv_driver *drv
- );
-
-static void
-VmbusOnMsgDPC(
- struct hv_driver *drv
- );
-
-static void
-VmbusOnEventDPC(
- struct hv_driver *drv
- );
-
-/*++;
-
-Name:
- VmbusInitialize()
-
-Description:
- Main entry point
-
---*/
-int
-VmbusInitialize(
- struct hv_driver *drv
- )
+static void VmbusGetChannelInfo(struct hv_device *DeviceObject,
+ struct hv_device_info *DeviceInfo);
+static void VmbusGetChannelOffers(void);
+static int VmbusOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo);
+static int VmbusOnDeviceRemove(struct hv_device *dev);
+static void VmbusOnCleanup(struct hv_driver *drv);
+static int VmbusOnISR(struct hv_driver *drv);
+static void VmbusOnMsgDPC(struct hv_driver *drv);
+static void VmbusOnEventDPC(struct hv_driver *drv);
+
+/**
+ * VmbusInitialize - Main entry point
+ */
+int VmbusInitialize(struct hv_driver *drv)
{
struct vmbus_driver *driver = (struct vmbus_driver *)drv;
- int ret=0;
+ int ret;
DPRINT_ENTER(VMBUS);
- DPRINT_INFO(VMBUS, "+++++++ Build Date=%s %s +++++++", VersionDate, VersionTime);
- DPRINT_INFO(VMBUS, "+++++++ Build Description=%s +++++++", VersionDesc);
-
- 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_MULITPAGE_BUFFER));
+ DPRINT_INFO(VMBUS, "+++++++ Build Date=%s %s +++++++",
+ VersionDate, VersionTime);
+ DPRINT_INFO(VMBUS, "+++++++ Build Description=%s +++++++",
+ VersionDesc);
+ 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_MULITPAGE_BUFFER));
drv->name = gDriverName;
memcpy(&drv->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
/* Setup dispatch table */
- driver->Base.OnDeviceAdd = VmbusOnDeviceAdd;
- driver->Base.OnDeviceRemove = VmbusOnDeviceRemove;
- driver->Base.OnCleanup = VmbusOnCleanup;
- driver->OnIsr = VmbusOnISR;
- driver->OnMsgDpc = VmbusOnMsgDPC;
- driver->OnEventDpc = VmbusOnEventDPC;
- driver->GetChannelOffers = VmbusGetChannelOffers;
- driver->GetChannelInterface = VmbusGetChannelInterface;
- driver->GetChannelInfo = VmbusGetChannelInfo;
+ driver->Base.OnDeviceAdd = VmbusOnDeviceAdd;
+ driver->Base.OnDeviceRemove = VmbusOnDeviceRemove;
+ driver->Base.OnCleanup = VmbusOnCleanup;
+ driver->OnIsr = VmbusOnISR;
+ driver->OnMsgDpc = VmbusOnMsgDPC;
+ driver->OnEventDpc = VmbusOnEventDPC;
+ driver->GetChannelOffers = VmbusGetChannelOffers;
+ driver->GetChannelInterface = VmbusGetChannelInterface;
+ driver->GetChannelInfo = VmbusGetChannelInfo;
/* Hypervisor initialization...setup hypercall page..etc */
ret = HvInit();
if (ret != 0)
- {
- DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x", ret);
- }
-
+ DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x",
+ ret);
gDriver = drv;
DPRINT_EXIT(VMBUS);
return ret;
}
-
-/*++;
-
-Name:
- VmbusGetChannelOffers()
-
-Description:
- Retrieve the channel offers from the parent partition
-
---*/
-
-static void
-VmbusGetChannelOffers(void)
+/**
+ * VmbusGetChannelOffers - Retrieve the channel offers from the parent partition
+ */
+static void VmbusGetChannelOffers(void)
{
DPRINT_ENTER(VMBUS);
VmbusChannelRequestOffers();
DPRINT_EXIT(VMBUS);
}
-
-/*++;
-
-Name:
- VmbusGetChannelInterface()
-
-Description:
- Get the channel interface
-
---*/
+/**
+ * VmbusGetChannelInterface - Get the channel interface
+ */
static void VmbusGetChannelInterface(struct vmbus_channel_interface *Interface)
{
GetChannelInterface(Interface);
}
-
-/*++;
-
-Name:
- VmbusGetChannelInfo()
-
-Description:
- Get the device info for the specified device object
-
---*/
-static void
-VmbusGetChannelInfo(
- struct hv_device *DeviceObject,
- struct hv_device_info *DeviceInfo
- )
+/**
+ * VmbusGetChannelInfo - Get the device info for the specified device object
+ */
+static void VmbusGetChannelInfo(struct hv_device *DeviceObject,
+ struct hv_device_info *DeviceInfo)
{
GetChannelInfo(DeviceObject, DeviceInfo);
}
-
-
-/*++
-
-Name:
- VmbusCreateChildDevice()
-
-Description:
- Creates the child device on the bus that represents the channel offer
-
---*/
-
+/**
+ * VmbusCreateChildDevice - Creates the child device on the bus that represents the channel offer
+ */
struct hv_device *VmbusChildDeviceCreate(struct hv_guid *DeviceType,
struct hv_guid *DeviceInstance,
void *Context)
{
struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
- return vmbusDriver->OnChildDeviceCreate(
- DeviceType,
- DeviceInstance,
- Context);
+ return vmbusDriver->OnChildDeviceCreate(DeviceType, DeviceInstance,
+ Context);
}
-
-/*++
-
-Name:
- VmbusChildDeviceAdd()
-
-Description:
- Registers the child device with the vmbus
-
---*/
+/**
+ * VmbusChildDeviceAdd - Registers the child device with the vmbus
+ */
int VmbusChildDeviceAdd(struct hv_device *ChildDevice)
{
struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
return vmbusDriver->OnChildDeviceAdd(gDevice, ChildDevice);
}
-
-/*++
-
-Name:
- VmbusChildDeviceRemove()
-
-Description:
- Unregisters the child device from the vmbus
-
---*/
+/**
+ * VmbusChildDeviceRemove Unregisters the child device from the vmbus
+ */
void VmbusChildDeviceRemove(struct hv_device *ChildDevice)
{
struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
vmbusDriver->OnChildDeviceRemove(ChildDevice);
}
-/*++
-
-Name:
- VmbusChildDeviceDestroy()
-
-Description:
- Release the child device from the vmbus
-
---*/
-
-/* **************
-void
-VmbusChildDeviceDestroy(
-struct hv_device *ChildDevice
-)
-{
- struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
-
- vmbusDriver->OnChildDeviceDestroy(ChildDevice);
-}
-************* */
-
-/*++
-
-Name:
- VmbusOnDeviceAdd()
-
-Description:
- Callback when the root bus device is added
-
---*/
-static int
-VmbusOnDeviceAdd(
- struct hv_device *dev,
- void *AdditionalInfo
- )
+/**
+ * VmbusOnDeviceAdd - Callback when the root bus device is added
+ */
+static int VmbusOnDeviceAdd(struct hv_device *dev, void *AdditionalInfo)
{
- u32 *irqvector = (u32*) AdditionalInfo;
- int ret=0;
+ u32 *irqvector = AdditionalInfo;
+ int ret;
DPRINT_ENTER(VMBUS);
gDevice = dev;
memcpy(&gDevice->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
- memcpy(&gDevice->deviceInstance, &gVmbusDeviceId, sizeof(struct hv_guid));
+ memcpy(&gDevice->deviceInstance, &gVmbusDeviceId,
+ sizeof(struct hv_guid));
/* strcpy(dev->name, "vmbus"); */
/* SynIC setup... */
return ret;
}
-
-/*++
-
-Name:
- VmbusOnDeviceRemove()
-
-Description:
- Callback when the root bus device is removed
-
---*/
-static int VmbusOnDeviceRemove(
- struct hv_device *dev
- )
+/**
+ * VmbusOnDeviceRemove - Callback when the root bus device is removed
+ */
+static int VmbusOnDeviceRemove(struct hv_device *dev)
{
- int ret=0;
+ int ret = 0;
DPRINT_ENTER(VMBUS);
-
VmbusChannelReleaseUnattachedChannels();
-
VmbusDisconnect();
-
HvSynicCleanup();
-
DPRINT_EXIT(VMBUS);
return ret;
}
-
-/*++
-
-Name:
- VmbusOnCleanup()
-
-Description:
- Perform any cleanup when the driver is removed
-
---*/
-static void
-VmbusOnCleanup(
- struct hv_driver *drv
- )
+/**
+ * VmbusOnCleanup - Perform any cleanup when the driver is removed
+ */
+static void VmbusOnCleanup(struct hv_driver *drv)
{
/* struct vmbus_driver *driver = (struct vmbus_driver *)drv; */
DPRINT_ENTER(VMBUS);
-
HvCleanup();
-
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusOnMsgDPC()
-
-Description:
- DPC routine to handle messages from the hypervisior
-
---*/
-static void
-VmbusOnMsgDPC(
- struct hv_driver *drv
- )
+/**
+ * VmbusOnMsgDPC - DPC routine to handle messages from the hypervisior
+ */
+static void VmbusOnMsgDPC(struct hv_driver *drv)
{
void *page_addr = gHvContext.synICMessagePage[0];
-
- struct hv_message *msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
+ struct hv_message *msg = (struct hv_message *)page_addr +
+ VMBUS_MESSAGE_SINT;
struct hv_message *copied;
- while (1)
- {
- if (msg->Header.MessageType == HvMessageTypeNone) /* no msg */
- {
+
+ while (1) {
+ if (msg->Header.MessageType == HvMessageTypeNone) {
+ /* no msg */
break;
- }
- else
- {
+ } else {
copied = kmalloc(sizeof(*copied), GFP_ATOMIC);
if (copied == NULL)
- {
continue;
- }
memcpy(copied, msg, sizeof(*copied));
osd_schedule_callback(gVmbusConnection.WorkQueue,
*/
mb();
- if (msg->Header.MessageFlags.MessagePending)
- {
+ if (msg->Header.MessageFlags.MessagePending) {
/*
* This will cause message queue rescan to
* possibly deliver another msg from the
}
}
-/*++
-
-Name:
- VmbusOnEventDPC()
-
-Description:
- DPC routine to handle events from the hypervisior
-
---*/
-static void
-VmbusOnEventDPC(
- struct hv_driver* drv
- )
+/**
+ * VmbusOnEventDPC - DPC routine to handle events from the hypervisior
+ */
+static void VmbusOnEventDPC(struct hv_driver *drv)
{
/* TODO: Process any events */
VmbusOnEvents();
}
-
-/*++
-
-Name:
- VmbusOnISR()
-
-Description:
- ISR routine
-
---*/
-static int
-VmbusOnISR(
- struct hv_driver *drv
- )
+/**
+ * VmbusOnISR - ISR routine
+ */
+static int VmbusOnISR(struct hv_driver *drv)
{
- /* struct vmbus_driver *driver = (struct vmbus_driver *)drv; */
-
- int ret=0;
- /* struct page* page; */
+ int ret = 0;
void *page_addr;
struct hv_message *msg;
union hv_synic_event_flags *event;
- /* page = SynICMessagePage[0]; */
- /* page_addr = page_address(page); */
page_addr = gHvContext.synICMessagePage[0];
msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
DPRINT_ENTER(VMBUS);
/* Check if there are actual msgs to be process */
- if (msg->Header.MessageType != HvMessageTypeNone)
- {
- DPRINT_DBG(VMBUS, "received msg type %d size %d", msg->Header.MessageType, msg->Header.PayloadSize);
+ if (msg->Header.MessageType != HvMessageTypeNone) {
+ DPRINT_DBG(VMBUS, "received msg type %d size %d",
+ msg->Header.MessageType,
+ msg->Header.PayloadSize);
ret |= 0x1;
- }
+ }
/* TODO: Check if there are events to be process */
page_addr = gHvContext.synICEventPage[0];
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]))
- {
+ if (test_and_clear_bit(0, (unsigned long *) &event->Flags32[0])) {
DPRINT_DBG(VMBUS, "received event %d", event->Flags32[0]);
ret |= 0x2;
}
DPRINT_EXIT(VMBUS);
return ret;
}
-
-/* eof */
projects / platform / kernel / linux-stable.git / commitdiff