Staging: hv: coding style cleanups on Vmbus.c
It's now much nicer and cleaner. Cc: Hank Janssen <hjanssen@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
parent
fd8b85eae9
commit
772ec4e208
1 changed files with 108 additions and 305 deletions
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@ -1,5 +1,4 @@
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/*
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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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@ -20,7 +19,6 @@
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* Hank Janssen <hjanssen@microsoft.com>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include "osd.h"
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@ -28,12 +26,10 @@
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#include "VersionInfo.h"
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#include "VmbusPrivate.h"
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static const char *gDriverName = "vmbus";
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/* Globals */
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static const char* gDriverName="vmbus";
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/* Windows vmbus does not defined this.
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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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@ -53,106 +49,61 @@ static const struct hv_guid gVmbusDeviceId = {
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};
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static struct hv_driver *gDriver; /* vmbus driver object */
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static struct hv_device* gDevice; /* vmbus root device */
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/* Internal routines */
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static struct hv_device *gDevice; /* vmbus root device */
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static void VmbusGetChannelInterface(struct vmbus_channel_interface *Interface);
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static void VmbusGetChannelInfo(struct hv_device *DeviceObject,
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struct hv_device_info *DeviceInfo);
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static void VmbusGetChannelOffers(void);
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static int VmbusOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo);
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static int VmbusOnDeviceRemove(struct hv_device *dev);
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static void VmbusOnCleanup(struct hv_driver *drv);
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static int VmbusOnISR(struct hv_driver *drv);
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static void VmbusOnMsgDPC(struct hv_driver *drv);
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static void VmbusOnEventDPC(struct hv_driver *drv);
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static void
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VmbusGetChannelInfo(
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struct hv_device *DeviceObject,
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struct hv_device_info *DeviceInfo
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);
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static void
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VmbusGetChannelOffers(
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void
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);
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static int
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VmbusOnDeviceAdd(
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struct hv_device *Device,
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void *AdditionalInfo
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);
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static int
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VmbusOnDeviceRemove(
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struct hv_device *dev
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);
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static void
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VmbusOnCleanup(
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struct hv_driver *drv
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);
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static int
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VmbusOnISR(
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struct hv_driver *drv
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);
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static void
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VmbusOnMsgDPC(
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struct hv_driver *drv
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);
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static void
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VmbusOnEventDPC(
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struct hv_driver *drv
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);
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/*++;
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Name:
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VmbusInitialize()
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Description:
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Main entry point
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--*/
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int
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VmbusInitialize(
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struct hv_driver *drv
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)
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/**
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* VmbusInitialize - Main entry point
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*/
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int VmbusInitialize(struct hv_driver *drv)
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{
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struct vmbus_driver *driver = (struct vmbus_driver *)drv;
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int ret=0;
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int ret;
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DPRINT_ENTER(VMBUS);
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DPRINT_INFO(VMBUS, "+++++++ Build Date=%s %s +++++++", VersionDate, VersionTime);
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DPRINT_INFO(VMBUS, "+++++++ Build Description=%s +++++++", VersionDesc);
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DPRINT_INFO(VMBUS, "+++++++ Vmbus supported version = %d +++++++", VMBUS_REVISION_NUMBER);
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DPRINT_INFO(VMBUS, "+++++++ Vmbus using SINT %d +++++++", VMBUS_MESSAGE_SINT);
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DPRINT_DBG(VMBUS, "sizeof(VMBUS_CHANNEL_PACKET_PAGE_BUFFER)=%zd, sizeof(VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER)=%zd",
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sizeof(struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER), sizeof(struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER));
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DPRINT_INFO(VMBUS, "+++++++ Build Date=%s %s +++++++",
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VersionDate, VersionTime);
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DPRINT_INFO(VMBUS, "+++++++ Build Description=%s +++++++",
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VersionDesc);
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DPRINT_INFO(VMBUS, "+++++++ Vmbus supported version = %d +++++++",
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VMBUS_REVISION_NUMBER);
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DPRINT_INFO(VMBUS, "+++++++ Vmbus using SINT %d +++++++",
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VMBUS_MESSAGE_SINT);
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DPRINT_DBG(VMBUS, "sizeof(VMBUS_CHANNEL_PACKET_PAGE_BUFFER)=%zd, "
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"sizeof(VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER)=%zd",
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sizeof(struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER),
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sizeof(struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER));
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drv->name = gDriverName;
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memcpy(&drv->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
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/* Setup dispatch table */
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driver->Base.OnDeviceAdd = VmbusOnDeviceAdd;
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driver->Base.OnDeviceRemove = VmbusOnDeviceRemove;
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driver->Base.OnCleanup = VmbusOnCleanup;
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driver->OnIsr = VmbusOnISR;
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driver->OnMsgDpc = VmbusOnMsgDPC;
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driver->OnEventDpc = VmbusOnEventDPC;
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driver->GetChannelOffers = VmbusGetChannelOffers;
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driver->GetChannelInterface = VmbusGetChannelInterface;
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driver->GetChannelInfo = VmbusGetChannelInfo;
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driver->Base.OnDeviceAdd = VmbusOnDeviceAdd;
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driver->Base.OnDeviceRemove = VmbusOnDeviceRemove;
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driver->Base.OnCleanup = VmbusOnCleanup;
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driver->OnIsr = VmbusOnISR;
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driver->OnMsgDpc = VmbusOnMsgDPC;
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driver->OnEventDpc = VmbusOnEventDPC;
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driver->GetChannelOffers = VmbusGetChannelOffers;
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driver->GetChannelInterface = VmbusGetChannelInterface;
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driver->GetChannelInfo = VmbusGetChannelInfo;
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/* Hypervisor initialization...setup hypercall page..etc */
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ret = HvInit();
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if (ret != 0)
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{
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DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x", ret);
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}
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DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x",
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ret);
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gDriver = drv;
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DPRINT_EXIT(VMBUS);
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@ -160,93 +111,49 @@ VmbusInitialize(
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return ret;
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}
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/*++;
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Name:
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VmbusGetChannelOffers()
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Description:
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Retrieve the channel offers from the parent partition
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--*/
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static void
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VmbusGetChannelOffers(void)
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/**
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* VmbusGetChannelOffers - Retrieve the channel offers from the parent partition
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*/
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static void VmbusGetChannelOffers(void)
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{
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DPRINT_ENTER(VMBUS);
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VmbusChannelRequestOffers();
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DPRINT_EXIT(VMBUS);
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}
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/*++;
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Name:
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VmbusGetChannelInterface()
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Description:
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Get the channel interface
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--*/
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/**
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* VmbusGetChannelInterface - Get the channel interface
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*/
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static void VmbusGetChannelInterface(struct vmbus_channel_interface *Interface)
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{
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GetChannelInterface(Interface);
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}
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/*++;
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Name:
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VmbusGetChannelInfo()
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Description:
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Get the device info for the specified device object
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--*/
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static void
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VmbusGetChannelInfo(
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struct hv_device *DeviceObject,
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struct hv_device_info *DeviceInfo
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)
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/**
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* VmbusGetChannelInfo - Get the device info for the specified device object
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*/
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static void VmbusGetChannelInfo(struct hv_device *DeviceObject,
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struct hv_device_info *DeviceInfo)
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{
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GetChannelInfo(DeviceObject, DeviceInfo);
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}
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/*++
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Name:
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VmbusCreateChildDevice()
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Description:
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Creates the child device on the bus that represents the channel offer
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--*/
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/**
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* VmbusCreateChildDevice - Creates the child device on the bus that represents the channel offer
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*/
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struct hv_device *VmbusChildDeviceCreate(struct hv_guid *DeviceType,
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struct hv_guid *DeviceInstance,
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void *Context)
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{
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struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
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return vmbusDriver->OnChildDeviceCreate(
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DeviceType,
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DeviceInstance,
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Context);
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return vmbusDriver->OnChildDeviceCreate(DeviceType, DeviceInstance,
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Context);
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}
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/*++
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Name:
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VmbusChildDeviceAdd()
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Description:
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Registers the child device with the vmbus
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--*/
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/**
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* VmbusChildDeviceAdd - Registers the child device with the vmbus
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*/
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int VmbusChildDeviceAdd(struct hv_device *ChildDevice)
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{
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struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
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@ -254,16 +161,9 @@ int VmbusChildDeviceAdd(struct hv_device *ChildDevice)
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return vmbusDriver->OnChildDeviceAdd(gDevice, ChildDevice);
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}
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/*++
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Name:
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VmbusChildDeviceRemove()
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Description:
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Unregisters the child device from the vmbus
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--*/
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/**
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* VmbusChildDeviceRemove Unregisters the child device from the vmbus
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*/
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void VmbusChildDeviceRemove(struct hv_device *ChildDevice)
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{
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struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
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@ -271,52 +171,21 @@ void VmbusChildDeviceRemove(struct hv_device *ChildDevice)
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vmbusDriver->OnChildDeviceRemove(ChildDevice);
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}
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/*++
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Name:
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VmbusChildDeviceDestroy()
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Description:
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Release the child device from the vmbus
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--*/
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/* **************
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void
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VmbusChildDeviceDestroy(
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struct hv_device *ChildDevice
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)
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/**
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* VmbusOnDeviceAdd - Callback when the root bus device is added
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*/
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static int VmbusOnDeviceAdd(struct hv_device *dev, void *AdditionalInfo)
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{
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struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver;
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vmbusDriver->OnChildDeviceDestroy(ChildDevice);
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}
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************* */
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/*++
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Name:
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VmbusOnDeviceAdd()
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Description:
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Callback when the root bus device is added
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--*/
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static int
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VmbusOnDeviceAdd(
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struct hv_device *dev,
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void *AdditionalInfo
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)
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{
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u32 *irqvector = (u32*) AdditionalInfo;
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int ret=0;
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u32 *irqvector = AdditionalInfo;
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int ret;
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DPRINT_ENTER(VMBUS);
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gDevice = dev;
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memcpy(&gDevice->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
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memcpy(&gDevice->deviceInstance, &gVmbusDeviceId, sizeof(struct hv_guid));
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memcpy(&gDevice->deviceInstance, &gVmbusDeviceId,
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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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@ -331,91 +200,52 @@ VmbusOnDeviceAdd(
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return ret;
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}
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/*++
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Name:
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VmbusOnDeviceRemove()
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Description:
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Callback when the root bus device is removed
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--*/
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static int VmbusOnDeviceRemove(
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struct hv_device *dev
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)
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/**
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* VmbusOnDeviceRemove - Callback when the root bus device is removed
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*/
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static int VmbusOnDeviceRemove(struct hv_device *dev)
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{
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int ret=0;
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int ret = 0;
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DPRINT_ENTER(VMBUS);
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VmbusChannelReleaseUnattachedChannels();
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VmbusDisconnect();
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HvSynicCleanup();
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DPRINT_EXIT(VMBUS);
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return ret;
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}
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/*++
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Name:
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VmbusOnCleanup()
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Description:
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Perform any cleanup when the driver is removed
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--*/
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static void
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VmbusOnCleanup(
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struct hv_driver *drv
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)
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/**
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* VmbusOnCleanup - Perform any cleanup when the driver is removed
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*/
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static void VmbusOnCleanup(struct hv_driver *drv)
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{
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/* struct vmbus_driver *driver = (struct vmbus_driver *)drv; */
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DPRINT_ENTER(VMBUS);
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HvCleanup();
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DPRINT_EXIT(VMBUS);
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}
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/*++
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Name:
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VmbusOnMsgDPC()
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Description:
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DPC routine to handle messages from the hypervisior
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--*/
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static void
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VmbusOnMsgDPC(
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struct hv_driver *drv
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)
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/**
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* VmbusOnMsgDPC - DPC routine to handle messages from the hypervisior
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*/
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static void VmbusOnMsgDPC(struct hv_driver *drv)
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{
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void *page_addr = gHvContext.synICMessagePage[0];
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struct hv_message *msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
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struct hv_message *msg = (struct hv_message *)page_addr +
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VMBUS_MESSAGE_SINT;
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struct hv_message *copied;
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while (1)
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{
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if (msg->Header.MessageType == HvMessageTypeNone) /* no msg */
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{
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while (1) {
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if (msg->Header.MessageType == HvMessageTypeNone) {
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/* no msg */
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break;
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}
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else
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{
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} else {
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copied = kmalloc(sizeof(*copied), GFP_ATOMIC);
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if (copied == NULL)
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{
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continue;
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}
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memcpy(copied, msg, sizeof(*copied));
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osd_schedule_callback(gVmbusConnection.WorkQueue,
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@ -434,8 +264,7 @@ VmbusOnMsgDPC(
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*/
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mb();
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if (msg->Header.MessageFlags.MessagePending)
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{
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if (msg->Header.MessageFlags.MessagePending) {
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/*
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* This will cause message queue rescan to
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* possibly deliver another msg from the
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@ -446,68 +275,44 @@ VmbusOnMsgDPC(
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}
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}
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/*++
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Name:
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VmbusOnEventDPC()
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Description:
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DPC routine to handle events from the hypervisior
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--*/
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static void
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VmbusOnEventDPC(
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struct hv_driver* drv
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)
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/**
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* VmbusOnEventDPC - DPC routine to handle events from the hypervisior
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*/
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static void VmbusOnEventDPC(struct hv_driver *drv)
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{
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/* TODO: Process any events */
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VmbusOnEvents();
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}
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/*++
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Name:
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VmbusOnISR()
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Description:
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ISR routine
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--*/
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static int
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VmbusOnISR(
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struct hv_driver *drv
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)
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/**
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* VmbusOnISR - ISR routine
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*/
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static int VmbusOnISR(struct hv_driver *drv)
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{
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/* struct vmbus_driver *driver = (struct vmbus_driver *)drv; */
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int ret=0;
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/* struct page* page; */
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int ret = 0;
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void *page_addr;
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struct hv_message *msg;
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union hv_synic_event_flags *event;
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|
||||
/* 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;
|
||||
}
|
||||
|
|
@ -515,5 +320,3 @@ VmbusOnISR(
|
|||
DPRINT_EXIT(VMBUS);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* eof */
|
||||
|
|
|
|||
Loading…
Reference in a new issue