+++ /dev/null
-/*
- *
- * 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 = -ENOMEM;
- goto Cleanup;
- }
-
- msgInfo->WaitEvent = osd_WaitEventCreate();
- if (!msgInfo->WaitEvent) {
- ret = -ENOMEM;
- goto Cleanup;
- }
-
- 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);
- if (!msg)
- return -ENOMEM;
-
- 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;
-}
obj-$(CONFIG_HYPERV_UTILS) += hv_utils.o
hv_vmbus-objs := vmbus_drv.o osd.o \
- Vmbus.o hv.o Connection.o channel.o \
+ Vmbus.o hv.o connection.o channel.o \
ChannelMgmt.o ChannelInterface.o RingBuffer.o
hv_storvsc-objs := storvsc_drv.o StorVsc.o
hv_blkvsc-objs := blkvsc_drv.o BlkVsc.o
--- /dev/null
+/*
+ *
+ * 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 = -ENOMEM;
+ goto Cleanup;
+ }
+
+ msgInfo->WaitEvent = osd_WaitEventCreate();
+ if (!msgInfo->WaitEvent) {
+ ret = -ENOMEM;
+ goto Cleanup;
+ }
+
+ 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);
+ if (!msg)
+ return -ENOMEM;
+
+ 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;
+}
projects / linux-2.6-block.git / commitdiff