This patch is re-based on the latest linux-next tree.
From: K. Y. Srinivasan <ksrinivasan@xxxxxxxxxx>
Subject: The hv_utils module will be composed of more than one file;
rename hv_utils.c to accommodate this without changing the module name.
Signed-off-by: K. Y. Srinivasan <ksrinivasan@xxxxxxxxxx>
Index: linux.trees.git/drivers/staging/hv/Makefile
===================================================================
--- linux.trees.git.orig/drivers/staging/hv/Makefile 2010-12-07 07:04:41.000000000 -0500
+++ linux.trees.git/drivers/staging/hv/Makefile 2010-12-07 08:00:10.000000000 -0500
@@ -10,3 +10,4 @@ hv_vmbus-y := vmbus_drv.o osd.o \
hv_storvsc-y := storvsc_drv.o storvsc.o
hv_blkvsc-y := blkvsc_drv.o blkvsc.o
hv_netvsc-y := netvsc_drv.o netvsc.o rndis_filter.o
+hv_utils-y := hv_util.o
Index: linux.trees.git/drivers/staging/hv/hv_util.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux.trees.git/drivers/staging/hv/hv_util.c 2010-12-07 08:00:10.000000000 -0500
@@ -0,0 +1,308 @@
+/*
+ * Copyright (c) 2010, 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@xxxxxxxxxxxxx>
+ * Hank Janssen <hjanssen@xxxxxxxxxxxxx>
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/sysctl.h>
+#include <linux/reboot.h>
+#include <linux/dmi.h>
+#include <linux/pci.h>
+
+#include "logging.h"
+#include "osd.h"
+#include "vmbus.h"
+#include "vmbus_packet_format.h"
+#include "vmbus_channel_interface.h"
+#include "version_info.h"
+#include "channel.h"
+#include "vmbus_private.h"
+#include "vmbus_api.h"
+#include "utils.h"
+
+
+static void shutdown_onchannelcallback(void *context)
+{
+ struct vmbus_channel *channel = context;
+ u8 *buf;
+ u32 buflen, recvlen;
+ u64 requestid;
+ u8 execute_shutdown = false;
+
+ struct shutdown_msg_data *shutdown_msg;
+
+ struct icmsg_hdr *icmsghdrp;
+ struct icmsg_negotiate *negop = NULL;
+
+ buflen = PAGE_SIZE;
+ buf = kmalloc(buflen, GFP_ATOMIC);
+
+ vmbus_recvpacket(channel, buf, buflen, &recvlen, &requestid);
+
+ if (recvlen > 0) {
+ DPRINT_DBG(VMBUS, "shutdown packet: len=%d, requestid=%lld",
+ recvlen, requestid);
+
+ icmsghdrp = (struct icmsg_hdr *)&buf[
+ sizeof(struct vmbuspipe_hdr)];
+
+ if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
+ prep_negotiate_resp(icmsghdrp, negop, buf);
+ } else {
+ shutdown_msg = (struct shutdown_msg_data *)&buf[
+ sizeof(struct vmbuspipe_hdr) +
+ sizeof(struct icmsg_hdr)];
+
+ switch (shutdown_msg->flags) {
+ case 0:
+ case 1:
+ icmsghdrp->status = HV_S_OK;
+ execute_shutdown = true;
+
+ DPRINT_INFO(VMBUS, "Shutdown request received -"
+ " gracefull shutdown initiated");
+ break;
+ default:
+ icmsghdrp->status = HV_E_FAIL;
+ execute_shutdown = false;
+
+ DPRINT_INFO(VMBUS, "Shutdown request received -"
+ " Invalid request");
+ break;
+ };
+ }
+
+ icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
+ | ICMSGHDRFLAG_RESPONSE;
+
+ vmbus_sendpacket(channel, buf,
+ recvlen, requestid,
+ VmbusPacketTypeDataInBand, 0);
+ }
+
+ kfree(buf);
+
+ if (execute_shutdown == true)
+ orderly_poweroff(false);
+}
+
+/*
+ * Set guest time to host UTC time.
+ */
+static inline void do_adj_guesttime(u64 hosttime)
+{
+ s64 host_tns;
+ struct timespec host_ts;
+
+ host_tns = (hosttime - WLTIMEDELTA) * 100;
+ host_ts = ns_to_timespec(host_tns);
+
+ do_settimeofday(&host_ts);
+}
+
+/*
+ * Synchronize time with host after reboot, restore, etc.
+ *
+ * ICTIMESYNCFLAG_SYNC flag bit indicates reboot, restore events of the VM.
+ * After reboot the flag ICTIMESYNCFLAG_SYNC is included in the first time
+ * message after the timesync channel is opened. Since the hv_utils module is
+ * loaded after hv_vmbus, the first message is usually missed. The other
+ * thing is, systime is automatically set to emulated hardware clock which may
+ * not be UTC time or in the same time zone. So, to override these effects, we
+ * use the first 50 time samples for initial system time setting.
+ */
+static inline void adj_guesttime(u64 hosttime, u8 flags)
+{
+ static s32 scnt = 50;
+
+ if ((flags & ICTIMESYNCFLAG_SYNC) != 0) {
+ do_adj_guesttime(hosttime);
+ return;
+ }
+
+ if ((flags & ICTIMESYNCFLAG_SAMPLE) != 0 && scnt > 0) {
+ scnt--;
+ do_adj_guesttime(hosttime);
+ }
+}
+
+/*
+ * Time Sync Channel message handler.
+ */
+static void timesync_onchannelcallback(void *context)
+{
+ struct vmbus_channel *channel = context;
+ u8 *buf;
+ u32 buflen, recvlen;
+ u64 requestid;
+ struct icmsg_hdr *icmsghdrp;
+ struct ictimesync_data *timedatap;
+
+ buflen = PAGE_SIZE;
+ buf = kmalloc(buflen, GFP_ATOMIC);
+
+ vmbus_recvpacket(channel, buf, buflen, &recvlen, &requestid);
+
+ if (recvlen > 0) {
+ DPRINT_DBG(VMBUS, "timesync packet: recvlen=%d, requestid=%lld",
+ recvlen, requestid);
+
+ icmsghdrp = (struct icmsg_hdr *)&buf[
+ sizeof(struct vmbuspipe_hdr)];
+
+ if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
+ prep_negotiate_resp(icmsghdrp, NULL, buf);
+ } else {
+ timedatap = (struct ictimesync_data *)&buf[
+ sizeof(struct vmbuspipe_hdr) +
+ sizeof(struct icmsg_hdr)];
+ adj_guesttime(timedatap->parenttime, timedatap->flags);
+ }
+
+ icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
+ | ICMSGHDRFLAG_RESPONSE;
+
+ vmbus_sendpacket(channel, buf,
+ recvlen, requestid,
+ VmbusPacketTypeDataInBand, 0);
+ }
+
+ kfree(buf);
+}
+
+/*
+ * Heartbeat functionality.
+ * Every two seconds, Hyper-V send us a heartbeat request message.
+ * we respond to this message, and Hyper-V knows we are alive.
+ */
+static void heartbeat_onchannelcallback(void *context)
+{
+ struct vmbus_channel *channel = context;
+ u8 *buf;
+ u32 buflen, recvlen;
+ u64 requestid;
+ struct icmsg_hdr *icmsghdrp;
+ struct heartbeat_msg_data *heartbeat_msg;
+
+ buflen = PAGE_SIZE;
+ buf = kmalloc(buflen, GFP_ATOMIC);
+
+ vmbus_recvpacket(channel, buf, buflen, &recvlen, &requestid);
+
+ if (recvlen > 0) {
+ DPRINT_DBG(VMBUS, "heartbeat packet: len=%d, requestid=%lld",
+ recvlen, requestid);
+
+ icmsghdrp = (struct icmsg_hdr *)&buf[
+ sizeof(struct vmbuspipe_hdr)];
+
+ if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
+ prep_negotiate_resp(icmsghdrp, NULL, buf);
+ } else {
+ heartbeat_msg = (struct heartbeat_msg_data *)&buf[
+ sizeof(struct vmbuspipe_hdr) +
+ sizeof(struct icmsg_hdr)];
+
+ DPRINT_DBG(VMBUS, "heartbeat seq = %lld",
+ heartbeat_msg->seq_num);
+
+ heartbeat_msg->seq_num += 1;
+ }
+
+ icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
+ | ICMSGHDRFLAG_RESPONSE;
+
+ vmbus_sendpacket(channel, buf,
+ recvlen, requestid,
+ VmbusPacketTypeDataInBand, 0);
+ }
+
+ kfree(buf);
+}
+
+static const struct pci_device_id __initconst
+hv_utils_pci_table[] __maybe_unused = {
+ { PCI_DEVICE(0x1414, 0x5353) }, /* Hyper-V emulated VGA controller */
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, hv_utils_pci_table);
+
+
+static const struct dmi_system_id __initconst
+hv_utils_dmi_table[] __maybe_unused = {
+ {
+ .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, hv_utils_dmi_table);
+
+
+static int __init init_hyperv_utils(void)
+{
+ printk(KERN_INFO "Registering HyperV Utility Driver\n");
+
+ if (!dmi_check_system(hv_utils_dmi_table))
+ return -ENODEV;
+
+ hv_cb_utils[HV_SHUTDOWN_MSG].channel->onchannel_callback =
+ &shutdown_onchannelcallback;
+ hv_cb_utils[HV_SHUTDOWN_MSG].callback = &shutdown_onchannelcallback;
+
+ hv_cb_utils[HV_TIMESYNC_MSG].channel->onchannel_callback =
+ ×ync_onchannelcallback;
+ hv_cb_utils[HV_TIMESYNC_MSG].callback = ×ync_onchannelcallback;
+
+ hv_cb_utils[HV_HEARTBEAT_MSG].channel->onchannel_callback =
+ &heartbeat_onchannelcallback;
+ hv_cb_utils[HV_HEARTBEAT_MSG].callback = &heartbeat_onchannelcallback;
+
+ return 0;
+}
+
+static void exit_hyperv_utils(void)
+{
+ printk(KERN_INFO "De-Registered HyperV Utility Driver\n");
+
+ hv_cb_utils[HV_SHUTDOWN_MSG].channel->onchannel_callback =
+ &chn_cb_negotiate;
+ hv_cb_utils[HV_SHUTDOWN_MSG].callback = &chn_cb_negotiate;
+
+ hv_cb_utils[HV_TIMESYNC_MSG].channel->onchannel_callback =
+ &chn_cb_negotiate;
+ hv_cb_utils[HV_TIMESYNC_MSG].callback = &chn_cb_negotiate;
+
+ hv_cb_utils[HV_HEARTBEAT_MSG].channel->onchannel_callback =
+ &chn_cb_negotiate;
+ hv_cb_utils[HV_HEARTBEAT_MSG].callback = &chn_cb_negotiate;
+}
+
+module_init(init_hyperv_utils);
+module_exit(exit_hyperv_utils);
+
+MODULE_DESCRIPTION("Hyper-V Utilities");
+MODULE_VERSION(HV_DRV_VERSION);
+MODULE_LICENSE("GPL");
Index: linux.trees.git/drivers/staging/hv/hv_utils.c
===================================================================
--- linux.trees.git.orig/drivers/staging/hv/hv_utils.c 2010-12-07 07:04:41.000000000 -0500
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,308 +0,0 @@
-/*
- * Copyright (c) 2010, 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@xxxxxxxxxxxxx>
- * Hank Janssen <hjanssen@xxxxxxxxxxxxx>
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/sysctl.h>
-#include <linux/reboot.h>
-#include <linux/dmi.h>
-#include <linux/pci.h>
-
-#include "logging.h"
-#include "osd.h"
-#include "vmbus.h"
-#include "vmbus_packet_format.h"
-#include "vmbus_channel_interface.h"
-#include "version_info.h"
-#include "channel.h"
-#include "vmbus_private.h"
-#include "vmbus_api.h"
-#include "utils.h"
-
-
-static void shutdown_onchannelcallback(void *context)
-{
- struct vmbus_channel *channel = context;
- u8 *buf;
- u32 buflen, recvlen;
- u64 requestid;
- u8 execute_shutdown = false;
-
- struct shutdown_msg_data *shutdown_msg;
-
- struct icmsg_hdr *icmsghdrp;
- struct icmsg_negotiate *negop = NULL;
-
- buflen = PAGE_SIZE;
- buf = kmalloc(buflen, GFP_ATOMIC);
-
- vmbus_recvpacket(channel, buf, buflen, &recvlen, &requestid);
-
- if (recvlen > 0) {
- DPRINT_DBG(VMBUS, "shutdown packet: len=%d, requestid=%lld",
- recvlen, requestid);
-
- icmsghdrp = (struct icmsg_hdr *)&buf[
- sizeof(struct vmbuspipe_hdr)];
-
- if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
- prep_negotiate_resp(icmsghdrp, negop, buf);
- } else {
- shutdown_msg = (struct shutdown_msg_data *)&buf[
- sizeof(struct vmbuspipe_hdr) +
- sizeof(struct icmsg_hdr)];
-
- switch (shutdown_msg->flags) {
- case 0:
- case 1:
- icmsghdrp->status = HV_S_OK;
- execute_shutdown = true;
-
- DPRINT_INFO(VMBUS, "Shutdown request received -"
- " gracefull shutdown initiated");
- break;
- default:
- icmsghdrp->status = HV_E_FAIL;
- execute_shutdown = false;
-
- DPRINT_INFO(VMBUS, "Shutdown request received -"
- " Invalid request");
- break;
- };
- }
-
- icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
- | ICMSGHDRFLAG_RESPONSE;
-
- vmbus_sendpacket(channel, buf,
- recvlen, requestid,
- VmbusPacketTypeDataInBand, 0);
- }
-
- kfree(buf);
-
- if (execute_shutdown == true)
- orderly_poweroff(false);
-}
-
-/*
- * Set guest time to host UTC time.
- */
-static inline void do_adj_guesttime(u64 hosttime)
-{
- s64 host_tns;
- struct timespec host_ts;
-
- host_tns = (hosttime - WLTIMEDELTA) * 100;
- host_ts = ns_to_timespec(host_tns);
-
- do_settimeofday(&host_ts);
-}
-
-/*
- * Synchronize time with host after reboot, restore, etc.
- *
- * ICTIMESYNCFLAG_SYNC flag bit indicates reboot, restore events of the VM.
- * After reboot the flag ICTIMESYNCFLAG_SYNC is included in the first time
- * message after the timesync channel is opened. Since the hv_utils module is
- * loaded after hv_vmbus, the first message is usually missed. The other
- * thing is, systime is automatically set to emulated hardware clock which may
- * not be UTC time or in the same time zone. So, to override these effects, we
- * use the first 50 time samples for initial system time setting.
- */
-static inline void adj_guesttime(u64 hosttime, u8 flags)
-{
- static s32 scnt = 50;
-
- if ((flags & ICTIMESYNCFLAG_SYNC) != 0) {
- do_adj_guesttime(hosttime);
- return;
- }
-
- if ((flags & ICTIMESYNCFLAG_SAMPLE) != 0 && scnt > 0) {
- scnt--;
- do_adj_guesttime(hosttime);
- }
-}
-
-/*
- * Time Sync Channel message handler.
- */
-static void timesync_onchannelcallback(void *context)
-{
- struct vmbus_channel *channel = context;
- u8 *buf;
- u32 buflen, recvlen;
- u64 requestid;
- struct icmsg_hdr *icmsghdrp;
- struct ictimesync_data *timedatap;
-
- buflen = PAGE_SIZE;
- buf = kmalloc(buflen, GFP_ATOMIC);
-
- vmbus_recvpacket(channel, buf, buflen, &recvlen, &requestid);
-
- if (recvlen > 0) {
- DPRINT_DBG(VMBUS, "timesync packet: recvlen=%d, requestid=%lld",
- recvlen, requestid);
-
- icmsghdrp = (struct icmsg_hdr *)&buf[
- sizeof(struct vmbuspipe_hdr)];
-
- if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
- prep_negotiate_resp(icmsghdrp, NULL, buf);
- } else {
- timedatap = (struct ictimesync_data *)&buf[
- sizeof(struct vmbuspipe_hdr) +
- sizeof(struct icmsg_hdr)];
- adj_guesttime(timedatap->parenttime, timedatap->flags);
- }
-
- icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
- | ICMSGHDRFLAG_RESPONSE;
-
- vmbus_sendpacket(channel, buf,
- recvlen, requestid,
- VmbusPacketTypeDataInBand, 0);
- }
-
- kfree(buf);
-}
-
-/*
- * Heartbeat functionality.
- * Every two seconds, Hyper-V send us a heartbeat request message.
- * we respond to this message, and Hyper-V knows we are alive.
- */
-static void heartbeat_onchannelcallback(void *context)
-{
- struct vmbus_channel *channel = context;
- u8 *buf;
- u32 buflen, recvlen;
- u64 requestid;
- struct icmsg_hdr *icmsghdrp;
- struct heartbeat_msg_data *heartbeat_msg;
-
- buflen = PAGE_SIZE;
- buf = kmalloc(buflen, GFP_ATOMIC);
-
- vmbus_recvpacket(channel, buf, buflen, &recvlen, &requestid);
-
- if (recvlen > 0) {
- DPRINT_DBG(VMBUS, "heartbeat packet: len=%d, requestid=%lld",
- recvlen, requestid);
-
- icmsghdrp = (struct icmsg_hdr *)&buf[
- sizeof(struct vmbuspipe_hdr)];
-
- if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
- prep_negotiate_resp(icmsghdrp, NULL, buf);
- } else {
- heartbeat_msg = (struct heartbeat_msg_data *)&buf[
- sizeof(struct vmbuspipe_hdr) +
- sizeof(struct icmsg_hdr)];
-
- DPRINT_DBG(VMBUS, "heartbeat seq = %lld",
- heartbeat_msg->seq_num);
-
- heartbeat_msg->seq_num += 1;
- }
-
- icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
- | ICMSGHDRFLAG_RESPONSE;
-
- vmbus_sendpacket(channel, buf,
- recvlen, requestid,
- VmbusPacketTypeDataInBand, 0);
- }
-
- kfree(buf);
-}
-
-static const struct pci_device_id __initconst
-hv_utils_pci_table[] __maybe_unused = {
- { PCI_DEVICE(0x1414, 0x5353) }, /* Hyper-V emulated VGA controller */
- { 0 }
-};
-MODULE_DEVICE_TABLE(pci, hv_utils_pci_table);
-
-
-static const struct dmi_system_id __initconst
-hv_utils_dmi_table[] __maybe_unused = {
- {
- .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, hv_utils_dmi_table);
-
-
-static int __init init_hyperv_utils(void)
-{
- printk(KERN_INFO "Registering HyperV Utility Driver\n");
-
- if (!dmi_check_system(hv_utils_dmi_table))
- return -ENODEV;
-
- hv_cb_utils[HV_SHUTDOWN_MSG].channel->onchannel_callback =
- &shutdown_onchannelcallback;
- hv_cb_utils[HV_SHUTDOWN_MSG].callback = &shutdown_onchannelcallback;
-
- hv_cb_utils[HV_TIMESYNC_MSG].channel->onchannel_callback =
- ×ync_onchannelcallback;
- hv_cb_utils[HV_TIMESYNC_MSG].callback = ×ync_onchannelcallback;
-
- hv_cb_utils[HV_HEARTBEAT_MSG].channel->onchannel_callback =
- &heartbeat_onchannelcallback;
- hv_cb_utils[HV_HEARTBEAT_MSG].callback = &heartbeat_onchannelcallback;
-
- return 0;
-}
-
-static void exit_hyperv_utils(void)
-{
- printk(KERN_INFO "De-Registered HyperV Utility Driver\n");
-
- hv_cb_utils[HV_SHUTDOWN_MSG].channel->onchannel_callback =
- &chn_cb_negotiate;
- hv_cb_utils[HV_SHUTDOWN_MSG].callback = &chn_cb_negotiate;
-
- hv_cb_utils[HV_TIMESYNC_MSG].channel->onchannel_callback =
- &chn_cb_negotiate;
- hv_cb_utils[HV_TIMESYNC_MSG].callback = &chn_cb_negotiate;
-
- hv_cb_utils[HV_HEARTBEAT_MSG].channel->onchannel_callback =
- &chn_cb_negotiate;
- hv_cb_utils[HV_HEARTBEAT_MSG].callback = &chn_cb_negotiate;
-}
-
-module_init(init_hyperv_utils);
-module_exit(exit_hyperv_utils);
-
-MODULE_DESCRIPTION("Hyper-V Utilities");
-MODULE_VERSION(HV_DRV_VERSION);
-MODULE_LICENSE("GPL");
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