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Staging: hv: remove vmbus.c 

Merge the functions into vmbus_drv.c as there's no need to have them
separate anymore.  It will also make unwinding some of the function and
pointer mess easier, as well as making functions static in the future.

Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2010-12-02 11:59:22 -08:00
parent 1953ecfc29
commit 36199a992a
3 changed files with 210 additions and 237 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/hv/Makefile
View File

@ -5,7 +5,7 @@ obj-$(CONFIG_HYPERV_NET) += hv_netvsc.o
obj-$(CONFIG_HYPERV_UTILS) += hv_utils.o
hv_vmbus-y := vmbus_drv.o osd.o \
vmbus.o hv.o connection.o channel.o \
hv.o connection.o channel.o \
channel_mgmt.o ring_buffer.o
hv_storvsc-y := storvsc_drv.o storvsc.o
hv_blkvsc-y := blkvsc_drv.o blkvsc.o

236
drivers/staging/hv/vmbus.c
View File

@ -1,236 +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 "osd.h"
#include "logging.h"
#include "version_info.h"
#include "vmbus_private.h"
static const char *gDriverName = "hyperv";
/*
* Windows vmbus does not defined this.
* We defined this to be consistent with other devices
*/
/* {c5295816-f63a-4d5f-8d1a-4daf999ca185} */
static const struct hv_guid gVmbusDeviceType = {
.data = {
0x16, 0x58, 0x29, 0xc5, 0x3a, 0xf6, 0x5f, 0x4d,
0x8d, 0x1a, 0x4d, 0xaf, 0x99, 0x9c, 0xa1, 0x85
}
};
/* {ac3760fc-9adf-40aa-9427-a70ed6de95c5} */
static const struct hv_guid gVmbusDeviceId = {
.data = {
0xfc, 0x60, 0x37, 0xac, 0xdf, 0x9a, 0xaa, 0x40,
0x94, 0x27, 0xa7, 0x0e, 0xd6, 0xde, 0x95, 0xc5
}
};
static struct hv_driver *gDriver; /* vmbus driver object */
static struct hv_device *gDevice; /* vmbus root device */
/*
* VmbusChildDeviceAdd - Registers the child device with the vmbus
*/
int VmbusChildDeviceAdd(struct hv_device *ChildDevice)
{
return vmbus_child_device_register(gDevice, ChildDevice);
}
/*
* VmbusOnDeviceAdd - Callback when the root bus device is added
*/
static int VmbusOnDeviceAdd(struct hv_device *dev, void *AdditionalInfo)
{
u32 *irqvector = AdditionalInfo;
int ret;
gDevice = dev;
memcpy(&gDevice->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
memcpy(&gDevice->deviceInstance, &gVmbusDeviceId,
sizeof(struct hv_guid));
/* strcpy(dev->name, "vmbus"); */
/* SynIC setup... */
on_each_cpu(hv_synic_init, (void *)irqvector, 1);
/* Connect to VMBus in the root partition */
ret = VmbusConnect();
/* VmbusSendEvent(device->localPortId+1); */
return ret;
}
/*
* VmbusOnDeviceRemove - Callback when the root bus device is removed
*/
static int VmbusOnDeviceRemove(struct hv_device *dev)
{
int ret = 0;
vmbus_release_unattached_channels();
VmbusDisconnect();
on_each_cpu(hv_synic_cleanup, NULL, 1);
return ret;
}
/*
* VmbusOnCleanup - Perform any cleanup when the driver is removed
*/
static void VmbusOnCleanup(struct hv_driver *drv)
{
/* struct vmbus_driver *driver = (struct vmbus_driver *)drv; */
hv_cleanup();
}
/*
* vmbus_on_msg_dpc - DPC routine to handle messages from the hypervisior
*/
void vmbus_on_msg_dpc(struct hv_driver *drv)
{
int cpu = smp_processor_id();
void *page_addr = hv_context.synic_message_page[cpu];
struct hv_message *msg = (struct hv_message *)page_addr +
VMBUS_MESSAGE_SINT;
struct hv_message *copied;
while (1) {
if (msg->header.message_type == HVMSG_NONE) {
/* no msg */
break;
} else {
copied = kmemdup(msg, sizeof(*copied), GFP_ATOMIC);
if (copied == NULL)
continue;
osd_schedule_callback(gVmbusConnection.WorkQueue,
vmbus_onmessage,
(void *)copied);
}
msg->header.message_type = HVMSG_NONE;
/*
* Make sure the write to MessageType (ie set to
* HVMSG_NONE) happens before we read the
* MessagePending and EOMing. Otherwise, the EOMing
* will not deliver any more messages since there is
* no empty slot
*/
mb();
if (msg->header.message_flags.msg_pending) {
/*
* This will cause message queue rescan to
* possibly deliver another msg from the
* hypervisor
*/
wrmsrl(HV_X64_MSR_EOM, 0);
}
}
}
/*
* vmbus_on_event_dpc - DPC routine to handle events from the hypervisior
*/
void vmbus_on_event_dpc(struct hv_driver *drv)
{
/* TODO: Process any events */
VmbusOnEvents();
}
/*
* vmbus_on_isr - ISR routine
*/
int vmbus_on_isr(struct hv_driver *drv)
{
int ret = 0;
int cpu = smp_processor_id();
void *page_addr;
struct hv_message *msg;
union hv_synic_event_flags *event;
page_addr = hv_context.synic_message_page[cpu];
msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
/* Check if there are actual msgs to be process */
if (msg->header.message_type != HVMSG_NONE) {
DPRINT_DBG(VMBUS, "received msg type %d size %d",
msg->header.message_type,
msg->header.payload_size);
ret |= 0x1;
}
/* TODO: Check if there are events to be process */
page_addr = hv_context.synic_event_page[cpu];
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])) {
DPRINT_DBG(VMBUS, "received event %d", event->flags32[0]);
ret |= 0x2;
}
return ret;
}
/*
* VmbusInitialize - Main entry point
*/
int VmbusInitialize(struct hv_driver *driver)
{
int ret;
DPRINT_INFO(VMBUS, "+++++++ HV Driver version = %s +++++++",
HV_DRV_VERSION);
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_multipage_buffer));
driver->name = gDriverName;
memcpy(&driver->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
/* Setup dispatch table */
driver->OnDeviceAdd = VmbusOnDeviceAdd;
driver->OnDeviceRemove = VmbusOnDeviceRemove;
driver->OnCleanup = VmbusOnCleanup;
/* Hypervisor initialization...setup hypercall page..etc */
ret = hv_init();
if (ret != 0)
DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x",
ret);
gDriver = driver;
return ret;
}

209
drivers/staging/hv/vmbus_drv.c
View File

@ -33,6 +33,7 @@
#include "logging.h"
#include "vmbus.h"
#include "channel.h"
#include "vmbus_private.h"
/* FIXME! We need to do this dynamically for PIC and APIC system */
@ -122,6 +123,214 @@ static struct vmbus_driver_context g_vmbus_drv = {
.bus.dev_attrs = vmbus_device_attrs,
};
static const char *gDriverName = "hyperv";
/*
* Windows vmbus does not defined this.
* We defined this to be consistent with other devices
*/
/* {c5295816-f63a-4d5f-8d1a-4daf999ca185} */
static const struct hv_guid gVmbusDeviceType = {
.data = {
0x16, 0x58, 0x29, 0xc5, 0x3a, 0xf6, 0x5f, 0x4d,
0x8d, 0x1a, 0x4d, 0xaf, 0x99, 0x9c, 0xa1, 0x85
}
};
/* {ac3760fc-9adf-40aa-9427-a70ed6de95c5} */
static const struct hv_guid gVmbusDeviceId = {
.data = {
0xfc, 0x60, 0x37, 0xac, 0xdf, 0x9a, 0xaa, 0x40,
0x94, 0x27, 0xa7, 0x0e, 0xd6, 0xde, 0x95, 0xc5
}
};
static struct hv_driver *gDriver; /* vmbus driver object */
static struct hv_device *gDevice; /* vmbus root device */
/*
* VmbusChildDeviceAdd - Registers the child device with the vmbus
*/
int VmbusChildDeviceAdd(struct hv_device *ChildDevice)
{
return vmbus_child_device_register(gDevice, ChildDevice);
}
/*
* VmbusOnDeviceAdd - Callback when the root bus device is added
*/
static int VmbusOnDeviceAdd(struct hv_device *dev, void *AdditionalInfo)
{
u32 *irqvector = AdditionalInfo;
int ret;
gDevice = dev;
memcpy(&gDevice->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
memcpy(&gDevice->deviceInstance, &gVmbusDeviceId,
sizeof(struct hv_guid));
/* strcpy(dev->name, "vmbus"); */
/* SynIC setup... */
on_each_cpu(hv_synic_init, (void *)irqvector, 1);
/* Connect to VMBus in the root partition */
ret = VmbusConnect();
/* VmbusSendEvent(device->localPortId+1); */
return ret;
}
/*
* VmbusOnDeviceRemove - Callback when the root bus device is removed
*/
static int VmbusOnDeviceRemove(struct hv_device *dev)
{
int ret = 0;
vmbus_release_unattached_channels();
VmbusDisconnect();
on_each_cpu(hv_synic_cleanup, NULL, 1);
return ret;
}
/*
* VmbusOnCleanup - Perform any cleanup when the driver is removed
*/
static void VmbusOnCleanup(struct hv_driver *drv)
{
/* struct vmbus_driver *driver = (struct vmbus_driver *)drv; */
hv_cleanup();
}
/*
* vmbus_on_msg_dpc - DPC routine to handle messages from the hypervisior
*/
void vmbus_on_msg_dpc(struct hv_driver *drv)
{
int cpu = smp_processor_id();
void *page_addr = hv_context.synic_message_page[cpu];
struct hv_message *msg = (struct hv_message *)page_addr +
VMBUS_MESSAGE_SINT;
struct hv_message *copied;
while (1) {
if (msg->header.message_type == HVMSG_NONE) {
/* no msg */
break;
} else {
copied = kmemdup(msg, sizeof(*copied), GFP_ATOMIC);
if (copied == NULL)
continue;
osd_schedule_callback(gVmbusConnection.WorkQueue,
vmbus_onmessage,
(void *)copied);
}
msg->header.message_type = HVMSG_NONE;
/*
* Make sure the write to MessageType (ie set to
* HVMSG_NONE) happens before we read the
* MessagePending and EOMing. Otherwise, the EOMing
* will not deliver any more messages since there is
* no empty slot
*/
mb();
if (msg->header.message_flags.msg_pending) {
/*
* This will cause message queue rescan to
* possibly deliver another msg from the
* hypervisor
*/
wrmsrl(HV_X64_MSR_EOM, 0);
}
}
}
/*
* vmbus_on_event_dpc - DPC routine to handle events from the hypervisior
*/
void vmbus_on_event_dpc(struct hv_driver *drv)
{
/* TODO: Process any events */
VmbusOnEvents();
}
/*
* vmbus_on_isr - ISR routine
*/
int vmbus_on_isr(struct hv_driver *drv)
{
int ret = 0;
int cpu = smp_processor_id();
void *page_addr;
struct hv_message *msg;
union hv_synic_event_flags *event;
page_addr = hv_context.synic_message_page[cpu];
msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
/* Check if there are actual msgs to be process */
if (msg->header.message_type != HVMSG_NONE) {
DPRINT_DBG(VMBUS, "received msg type %d size %d",
msg->header.message_type,
msg->header.payload_size);
ret |= 0x1;
}
/* TODO: Check if there are events to be process */
page_addr = hv_context.synic_event_page[cpu];
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])) {
DPRINT_DBG(VMBUS, "received event %d", event->flags32[0]);
ret |= 0x2;
}
return ret;
}
/*
* VmbusInitialize - Main entry point
*/
int VmbusInitialize(struct hv_driver *driver)
{
int ret;
DPRINT_INFO(VMBUS, "+++++++ HV Driver version = %s +++++++",
HV_DRV_VERSION);
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_multipage_buffer));
driver->name = gDriverName;
memcpy(&driver->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid));
/* Setup dispatch table */
driver->OnDeviceAdd = VmbusOnDeviceAdd;
driver->OnDeviceRemove = VmbusOnDeviceRemove;
driver->OnCleanup = VmbusOnCleanup;
/* Hypervisor initialization...setup hypercall page..etc */
ret = hv_init();
if (ret != 0)
DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x",
ret);
gDriver = driver;
return ret;
}
static void get_channel_info(struct hv_device *device,
struct hv_device_info *info)
{