1 files changed, 0 insertions, 342 deletions
diff --git a/drivers/staging/hv/Connection.c b/drivers/staging/hv/Connection.c
deleted file mode 100644
index e0ea9cf90f03..000000000000
--- a/drivers/staging/hv/Connection.c
+++ /dev/null
@@ -1,342 +0,0 @@
-/*
- *
- * Copyright (c) 2009, Microsoft Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Authors:
- *   Haiyang Zhang <haiyangz@microsoft.com>
- *   Hank Janssen  <hjanssen@microsoft.com>
- *
- */
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include "osd.h"
-#include "logging.h"
-#include "VmbusPrivate.h"
-
-
-struct VMBUS_CONNECTION gVmbusConnection = {
-	.ConnectState		= Disconnected,
-	.NextGpadlHandle	= ATOMIC_INIT(0xE1E10),
-};
-
-/**
- * VmbusConnect - Sends a connect request on the partition service connection
- */
-int VmbusConnect(void)
-{
-	int ret = 0;
-	struct vmbus_channel_msginfo *msgInfo = NULL;
-	struct vmbus_channel_initiate_contact *msg;
-	unsigned long flags;
-
-	DPRINT_ENTER(VMBUS);
-
-	/* Make sure we are not connecting or connected */
-	if (gVmbusConnection.ConnectState != Disconnected)
-		return -1;
-
-	/* Initialize the vmbus connection */
-	gVmbusConnection.ConnectState = Connecting;
-	gVmbusConnection.WorkQueue = create_workqueue("hv_vmbus_con");
-	if (!gVmbusConnection.WorkQueue) {
-		ret = -1;
-		goto Cleanup;
-	}
-
-	INIT_LIST_HEAD(&gVmbusConnection.ChannelMsgList);
-	spin_lock_init(&gVmbusConnection.channelmsg_lock);
-
-	INIT_LIST_HEAD(&gVmbusConnection.ChannelList);
-	spin_lock_init(&gVmbusConnection.channel_lock);
-
-	/*
-	 * Setup the vmbus event connection for channel interrupt
-	 * abstraction stuff
-	 */
-	gVmbusConnection.InterruptPage = osd_PageAlloc(1);
-	if (gVmbusConnection.InterruptPage == NULL) {
-		ret = -1;
-		goto Cleanup;
-	}
-
-	gVmbusConnection.RecvInterruptPage = gVmbusConnection.InterruptPage;
-	gVmbusConnection.SendInterruptPage =
-		(void *)((unsigned long)gVmbusConnection.InterruptPage +
-			(PAGE_SIZE >> 1));
-
-	/*
-	 * Setup the monitor notification facility. The 1st page for
-	 * parent->child and the 2nd page for child->parent
-	 */
-	gVmbusConnection.MonitorPages = osd_PageAlloc(2);
-	if (gVmbusConnection.MonitorPages == NULL) {
-		ret = -1;
-		goto Cleanup;
-	}
-
-	msgInfo = kzalloc(sizeof(*msgInfo) +
-			  sizeof(struct vmbus_channel_initiate_contact),
-			  GFP_KERNEL);
-	if (msgInfo == NULL) {
-		ret = -1;
-		goto Cleanup;
-	}
-
-	msgInfo->WaitEvent = osd_WaitEventCreate();
-	msg = (struct vmbus_channel_initiate_contact *)msgInfo->Msg;
-
-	msg->Header.MessageType = ChannelMessageInitiateContact;
-	msg->VMBusVersionRequested = VMBUS_REVISION_NUMBER;
-	msg->InterruptPage = virt_to_phys(gVmbusConnection.InterruptPage);
-	msg->MonitorPage1 = virt_to_phys(gVmbusConnection.MonitorPages);
-	msg->MonitorPage2 = virt_to_phys(
-			(void *)((unsigned long)gVmbusConnection.MonitorPages +
-				 PAGE_SIZE));
-
-	/*
-	 * Add to list before we send the request since we may
-	 * receive the response before returning from this routine
-	 */
-	spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
-	list_add_tail(&msgInfo->MsgListEntry,
-		      &gVmbusConnection.ChannelMsgList);
-
-	spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags);
-
-	DPRINT_DBG(VMBUS, "Vmbus connection - interrupt pfn %llx, "
-		   "monitor1 pfn %llx,, monitor2 pfn %llx",
-		   msg->InterruptPage, msg->MonitorPage1, msg->MonitorPage2);
-
-	DPRINT_DBG(VMBUS, "Sending channel initiate msg...");
-	ret = VmbusPostMessage(msg,
-			       sizeof(struct vmbus_channel_initiate_contact));
-	if (ret != 0) {
-		list_del(&msgInfo->MsgListEntry);
-		goto Cleanup;
-	}
-
-	/* Wait for the connection response */
-	osd_WaitEventWait(msgInfo->WaitEvent);
-
-	list_del(&msgInfo->MsgListEntry);
-
-	/* Check if successful */
-	if (msgInfo->Response.VersionResponse.VersionSupported) {
-		DPRINT_INFO(VMBUS, "Vmbus connected!!");
-		gVmbusConnection.ConnectState = Connected;
-
-	} else {
-		DPRINT_ERR(VMBUS, "Vmbus connection failed!!..."
-			   "current version (%d) not supported",
-			   VMBUS_REVISION_NUMBER);
-		ret = -1;
-		goto Cleanup;
-	}
-
-	kfree(msgInfo->WaitEvent);
-	kfree(msgInfo);
-	DPRINT_EXIT(VMBUS);
-
-	return 0;
-
-Cleanup:
-	gVmbusConnection.ConnectState = Disconnected;
-
-	if (gVmbusConnection.WorkQueue)
-		destroy_workqueue(gVmbusConnection.WorkQueue);
-
-	if (gVmbusConnection.InterruptPage) {
-		osd_PageFree(gVmbusConnection.InterruptPage, 1);
-		gVmbusConnection.InterruptPage = NULL;
-	}
-
-	if (gVmbusConnection.MonitorPages) {
-		osd_PageFree(gVmbusConnection.MonitorPages, 2);
-		gVmbusConnection.MonitorPages = NULL;
-	}
-
-	if (msgInfo) {
-		kfree(msgInfo->WaitEvent);
-		kfree(msgInfo);
-	}
-
-	DPRINT_EXIT(VMBUS);
-
-	return ret;
-}
-
-/**
- * VmbusDisconnect - Sends a disconnect request on the partition service connection
- */
-int VmbusDisconnect(void)
-{
-	int ret = 0;
-	struct vmbus_channel_message_header *msg;
-
-	DPRINT_ENTER(VMBUS);
-
-	/* Make sure we are connected */
-	if (gVmbusConnection.ConnectState != Connected)
-		return -1;
-
-	msg = kzalloc(sizeof(struct vmbus_channel_message_header), GFP_KERNEL);
-
-	msg->MessageType = ChannelMessageUnload;
-
-	ret = VmbusPostMessage(msg,
-			       sizeof(struct vmbus_channel_message_header));
-	if (ret != 0)
-		goto Cleanup;
-
-	osd_PageFree(gVmbusConnection.InterruptPage, 1);
-
-	/* TODO: iterate thru the msg list and free up */
-	destroy_workqueue(gVmbusConnection.WorkQueue);
-
-	gVmbusConnection.ConnectState = Disconnected;
-
-	DPRINT_INFO(VMBUS, "Vmbus disconnected!!");
-
-Cleanup:
-	kfree(msg);
-	DPRINT_EXIT(VMBUS);
-	return ret;
-}
-
-/**
- * GetChannelFromRelId - Get the channel object given its child relative id (ie channel id)
- */
-struct vmbus_channel *GetChannelFromRelId(u32 relId)
-{
-	struct vmbus_channel *channel;
-	struct vmbus_channel *foundChannel  = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&gVmbusConnection.channel_lock, flags);
-	list_for_each_entry(channel, &gVmbusConnection.ChannelList, ListEntry) {
-		if (channel->OfferMsg.ChildRelId == relId) {
-			foundChannel = channel;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags);
-
-	return foundChannel;
-}
-
-/**
- * VmbusProcessChannelEvent - Process a channel event notification
- */
-static void VmbusProcessChannelEvent(void *context)
-{
-	struct vmbus_channel *channel;
-	u32 relId = (u32)(unsigned long)context;
-
-	ASSERT(relId > 0);
-
-	/*
-	 * Find the channel based on this relid and invokes the
-	 * channel callback to process the event
-	 */
-	channel = GetChannelFromRelId(relId);
-
-	if (channel) {
-		VmbusChannelOnChannelEvent(channel);
-		/*
-		 * WorkQueueQueueWorkItem(channel->dataWorkQueue,
-		 * 			  VmbusChannelOnChannelEvent,
-		 * 			  (void*)channel);
-		 */
-	} else {
-		DPRINT_ERR(VMBUS, "channel not found for relid - %d.", relId);
-	}
-}
-
-/**
- * VmbusOnEvents - Handler for events
- */
-void VmbusOnEvents(void)
-{
-	int dword;
-	int maxdword = MAX_NUM_CHANNELS_SUPPORTED >> 5;
-	int bit;
-	int relid;
-	u32 *recvInterruptPage = gVmbusConnection.RecvInterruptPage;
-
-	DPRINT_ENTER(VMBUS);
-
-	/* Check events */
-	if (recvInterruptPage) {
-		for (dword = 0; dword < maxdword; dword++) {
-			if (recvInterruptPage[dword]) {
-				for (bit = 0; bit < 32; bit++) {
-					if (test_and_clear_bit(bit, (unsigned long *)&recvInterruptPage[dword])) {
-						relid = (dword << 5) + bit;
-						DPRINT_DBG(VMBUS, "event detected for relid - %d", relid);
-
-						if (relid == 0) {
-							/* special case - vmbus channel protocol msg */
-							DPRINT_DBG(VMBUS, "invalid relid - %d", relid);
-							continue;
-						} else {
-							/* QueueWorkItem(VmbusProcessEvent, (void*)relid); */
-							/* ret = WorkQueueQueueWorkItem(gVmbusConnection.workQueue, VmbusProcessChannelEvent, (void*)relid); */
-							VmbusProcessChannelEvent((void *)(unsigned long)relid);
-						}
-					}
-				}
-			}
-		 }
-	}
-	DPRINT_EXIT(VMBUS);
-
-	return;
-}
-
-/**
- * VmbusPostMessage - Send a msg on the vmbus's message connection
- */
-int VmbusPostMessage(void *buffer, size_t bufferLen)
-{
-	union hv_connection_id connId;
-
-	connId.Asu32 = 0;
-	connId.u.Id = VMBUS_MESSAGE_CONNECTION_ID;
-	return HvPostMessage(connId, 1, buffer, bufferLen);
-}
-
-/**
- * VmbusSetEvent - Send an event notification to the parent
- */
-int VmbusSetEvent(u32 childRelId)
-{
-	int ret = 0;
-
-	DPRINT_ENTER(VMBUS);
-
-	/* Each u32 represents 32 channels */
-	set_bit(childRelId & 31,
-		(unsigned long *)gVmbusConnection.SendInterruptPage +
-		(childRelId >> 5));
-
-	ret = HvSignalEvent();
-
-	DPRINT_EXIT(VMBUS);
-
-	return ret;
-}