/*
- *
* Copyright (c) 2009, Microsoft Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* Authors:
* Haiyang Zhang <haiyangz@microsoft.com>
* Hank Janssen <hjanssen@microsoft.com>
- *
*/
-
-
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include "vmbus.h"
-/* Defines */
-
-
/* FIXME! We need to do this dynamically for PIC and APIC system */
-#define VMBUS_IRQ 0x5
-#define VMBUS_IRQ_VECTOR IRQ5_VECTOR
-
-/* Data types */
-
+#define VMBUS_IRQ 0x5
+#define VMBUS_IRQ_VECTOR IRQ5_VECTOR
/* Main vmbus driver data structure */
struct vmbus_driver_context {
/* !! These must be the first 2 fields !! */
+ /* FIXME, this is a bug */
/* The driver field is not used in here. Instead, the bus field is */
/* used to represent the driver */
- struct driver_context drv_ctx;
+ struct driver_context drv_ctx;
struct vmbus_driver drv_obj;
- struct bus_type bus;
- struct tasklet_struct msg_dpc;
- struct tasklet_struct event_dpc;
+ struct bus_type bus;
+ struct tasklet_struct msg_dpc;
+ struct tasklet_struct event_dpc;
/* The bus root device */
- struct device_context device_ctx;
+ struct device_context device_ctx;
};
-
-/* Static decl */
-
static int vmbus_match(struct device *device, struct device_driver *driver);
static int vmbus_probe(struct device *device);
static int vmbus_remove(struct device *device);
static void vmbus_msg_dpc(unsigned long data);
static void vmbus_event_dpc(unsigned long data);
-static irqreturn_t vmbus_isr(int irq, void* dev_id);
+static irqreturn_t vmbus_isr(int irq, void *dev_id);
static void vmbus_device_release(struct device *device);
static void vmbus_bus_release(struct device *device);
-static struct hv_device *vmbus_child_device_create(struct hv_guid *type, struct hv_guid *instance, void *context);
+static struct hv_device *vmbus_child_device_create(struct hv_guid *type,
+ struct hv_guid *instance,
+ void *context);
static void vmbus_child_device_destroy(struct hv_device *device_obj);
-static int vmbus_child_device_register(struct hv_device *root_device_obj, struct hv_device *child_device_obj);
+static int vmbus_child_device_register(struct hv_device *root_device_obj,
+ struct hv_device *child_device_obj);
static void vmbus_child_device_unregister(struct hv_device *child_device_obj);
-static void vmbus_child_device_get_info(struct hv_device *device_obj, struct hv_device_info *device_info);
+static void vmbus_child_device_get_info(struct hv_device *device_obj,
+ struct hv_device_info *device_info);
+static ssize_t vmbus_show_device_attr(struct device *dev,
+ struct device_attribute *dev_attr,
+ char *buf);
-/* static ssize_t vmbus_show_class_id(struct device *dev, struct device_attribute *attr, char *buf); */
-/* static ssize_t vmbus_show_device_id(struct device *dev, struct device_attribute *attr, char *buf); */
-static ssize_t vmbus_show_device_attr(struct device *dev, struct device_attribute *dev_attr, char *buf);
-
-
-/* Global */
-
-
-/* Global logging setting */
-
-/* unsigned int vmbus_loglevel= (((VMBUS | VMBUS_DRV)<<16) | DEBUG_LVL_ENTEREXIT); */
-/* unsigned int vmbus_loglevel= (ALL_MODULES << 16 | DEBUG_LVL_ENTEREXIT); */
-unsigned int vmbus_loglevel= (ALL_MODULES << 16 | INFO_LVL);
+unsigned int vmbus_loglevel = (ALL_MODULES << 16 | INFO_LVL);
EXPORT_SYMBOL(vmbus_loglevel);
+ /* (ALL_MODULES << 16 | DEBUG_LVL_ENTEREXIT); */
+ /* (((VMBUS | VMBUS_DRV)<<16) | DEBUG_LVL_ENTEREXIT); */
static int vmbus_irq = VMBUS_IRQ;
-/* Setup /proc/sys/bus/vmbus/vmbus_loglevel */
-/* Allow usage of sysctl cmd to set the logging level */
-
/* Set up per device attributes in /sys/bus/vmbus/devices/<bus device> */
-
static struct device_attribute vmbus_device_attrs[] = {
__ATTR(id, S_IRUGO, vmbus_show_device_attr, NULL),
__ATTR(state, S_IRUGO, vmbus_show_device_attr, NULL),
};
/* The one and only one */
-static struct vmbus_driver_context g_vmbus_drv={
- .bus.name = "vmbus",
- .bus.match = vmbus_match,
- .bus.shutdown = vmbus_shutdown,
- .bus.remove = vmbus_remove,
- .bus.probe = vmbus_probe,
- .bus.uevent = vmbus_uevent,
- .bus.dev_attrs = vmbus_device_attrs,
+static struct vmbus_driver_context g_vmbus_drv = {
+ .bus.name = "vmbus",
+ .bus.match = vmbus_match,
+ .bus.shutdown = vmbus_shutdown,
+ .bus.remove = vmbus_remove,
+ .bus.probe = vmbus_probe,
+ .bus.uevent = vmbus_uevent,
+ .bus.dev_attrs = vmbus_device_attrs,
};
-
-/* Routines */
-
-
-
-/*++
-
-Name: vmbus_show_device_attr()
-
-Desc: Show the device attribute in sysfs. This is invoked when user does a "cat /sys/bus/vmbus/devices/<bus device>/<attr name>"
-
---*/
-static ssize_t vmbus_show_device_attr(struct device *dev, struct device_attribute *dev_attr, char *buf)
+/**
+ * vmbus_show_device_attr - Show the device attribute in sysfs.
+ *
+ * This is invoked when user does a
+ * "cat /sys/bus/vmbus/devices/<busdevice>/<attr name>"
+ */
+static ssize_t vmbus_show_device_attr(struct device *dev,
+ struct device_attribute *dev_attr,
+ char *buf)
{
struct device_context *device_ctx = device_to_device_context(dev);
struct hv_device_info device_info;
vmbus_child_device_get_info(&device_ctx->device_obj, &device_info);
- if (!strcmp(dev_attr->attr.name, "class_id"))
- {
- return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}\n",
- device_info.ChannelType.data[3], device_info.ChannelType.data[2],
- device_info.ChannelType.data[1], device_info.ChannelType.data[0],
- device_info.ChannelType.data[5], device_info.ChannelType.data[4],
- device_info.ChannelType.data[7], device_info.ChannelType.data[6],
- device_info.ChannelType.data[8], device_info.ChannelType.data[9],
- device_info.ChannelType.data[10], device_info.ChannelType.data[11],
- device_info.ChannelType.data[12], device_info.ChannelType.data[13],
- device_info.ChannelType.data[14], device_info.ChannelType.data[15]);
-
- }
- else if (!strcmp(dev_attr->attr.name, "device_id"))
- {
- return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}\n",
- device_info.ChannelInstance.data[3], device_info.ChannelInstance.data[2],
- device_info.ChannelInstance.data[1], device_info.ChannelInstance.data[0],
- device_info.ChannelInstance.data[5], device_info.ChannelInstance.data[4],
- device_info.ChannelInstance.data[7], device_info.ChannelInstance.data[6],
- device_info.ChannelInstance.data[8], device_info.ChannelInstance.data[9],
- device_info.ChannelInstance.data[10], device_info.ChannelInstance.data[11],
- device_info.ChannelInstance.data[12], device_info.ChannelInstance.data[13],
- device_info.ChannelInstance.data[14], device_info.ChannelInstance.data[15]);
- }
- else if (!strcmp(dev_attr->attr.name, "state"))
- {
+ if (!strcmp(dev_attr->attr.name, "class_id")) {
+ return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x}\n",
+ device_info.ChannelType.data[3],
+ device_info.ChannelType.data[2],
+ device_info.ChannelType.data[1],
+ device_info.ChannelType.data[0],
+ device_info.ChannelType.data[5],
+ device_info.ChannelType.data[4],
+ device_info.ChannelType.data[7],
+ device_info.ChannelType.data[6],
+ device_info.ChannelType.data[8],
+ device_info.ChannelType.data[9],
+ device_info.ChannelType.data[10],
+ device_info.ChannelType.data[11],
+ device_info.ChannelType.data[12],
+ device_info.ChannelType.data[13],
+ device_info.ChannelType.data[14],
+ device_info.ChannelType.data[15]);
+ } else if (!strcmp(dev_attr->attr.name, "device_id")) {
+ return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x}\n",
+ device_info.ChannelInstance.data[3],
+ device_info.ChannelInstance.data[2],
+ device_info.ChannelInstance.data[1],
+ device_info.ChannelInstance.data[0],
+ device_info.ChannelInstance.data[5],
+ device_info.ChannelInstance.data[4],
+ device_info.ChannelInstance.data[7],
+ device_info.ChannelInstance.data[6],
+ device_info.ChannelInstance.data[8],
+ device_info.ChannelInstance.data[9],
+ device_info.ChannelInstance.data[10],
+ device_info.ChannelInstance.data[11],
+ device_info.ChannelInstance.data[12],
+ device_info.ChannelInstance.data[13],
+ device_info.ChannelInstance.data[14],
+ device_info.ChannelInstance.data[15]);
+ } else if (!strcmp(dev_attr->attr.name, "state")) {
return sprintf(buf, "%d\n", device_info.ChannelState);
- }
- else if (!strcmp(dev_attr->attr.name, "id"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "id")) {
return sprintf(buf, "%d\n", device_info.ChannelId);
- }
- else if (!strcmp(dev_attr->attr.name, "out_intr_mask"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "out_intr_mask")) {
return sprintf(buf, "%d\n", device_info.Outbound.InterruptMask);
- }
- else if (!strcmp(dev_attr->attr.name, "out_read_index"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "out_read_index")) {
return sprintf(buf, "%d\n", device_info.Outbound.ReadIndex);
- }
- else if (!strcmp(dev_attr->attr.name, "out_write_index"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "out_write_index")) {
return sprintf(buf, "%d\n", device_info.Outbound.WriteIndex);
- }
- else if (!strcmp(dev_attr->attr.name, "out_read_bytes_avail"))
- {
- return sprintf(buf, "%d\n", device_info.Outbound.BytesAvailToRead);
- }
- else if (!strcmp(dev_attr->attr.name, "out_write_bytes_avail"))
- {
- return sprintf(buf, "%d\n", device_info.Outbound.BytesAvailToWrite);
- }
- else if (!strcmp(dev_attr->attr.name, "in_intr_mask"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "out_read_bytes_avail")) {
+ return sprintf(buf, "%d\n",
+ device_info.Outbound.BytesAvailToRead);
+ } else if (!strcmp(dev_attr->attr.name, "out_write_bytes_avail")) {
+ return sprintf(buf, "%d\n",
+ device_info.Outbound.BytesAvailToWrite);
+ } else if (!strcmp(dev_attr->attr.name, "in_intr_mask")) {
return sprintf(buf, "%d\n", device_info.Inbound.InterruptMask);
- }
- else if (!strcmp(dev_attr->attr.name, "in_read_index"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "in_read_index")) {
return sprintf(buf, "%d\n", device_info.Inbound.ReadIndex);
- }
- else if (!strcmp(dev_attr->attr.name, "in_write_index"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "in_write_index")) {
return sprintf(buf, "%d\n", device_info.Inbound.WriteIndex);
- }
- else if (!strcmp(dev_attr->attr.name, "in_read_bytes_avail"))
- {
- return sprintf(buf, "%d\n", device_info.Inbound.BytesAvailToRead);
- }
- else if (!strcmp(dev_attr->attr.name, "in_write_bytes_avail"))
- {
- return sprintf(buf, "%d\n", device_info.Inbound.BytesAvailToWrite);
- }
- else if (!strcmp(dev_attr->attr.name, "monitor_id"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "in_read_bytes_avail")) {
+ return sprintf(buf, "%d\n",
+ device_info.Inbound.BytesAvailToRead);
+ } else if (!strcmp(dev_attr->attr.name, "in_write_bytes_avail")) {
+ return sprintf(buf, "%d\n",
+ device_info.Inbound.BytesAvailToWrite);
+ } else if (!strcmp(dev_attr->attr.name, "monitor_id")) {
return sprintf(buf, "%d\n", device_info.MonitorId);
- }
- else if (!strcmp(dev_attr->attr.name, "server_monitor_pending"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "server_monitor_pending")) {
return sprintf(buf, "%d\n", device_info.ServerMonitorPending);
- }
- else if (!strcmp(dev_attr->attr.name, "server_monitor_latency"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "server_monitor_latency")) {
return sprintf(buf, "%d\n", device_info.ServerMonitorLatency);
- }
- else if (!strcmp(dev_attr->attr.name, "server_monitor_conn_id"))
- {
- return sprintf(buf, "%d\n", device_info.ServerMonitorConnectionId);
- }
- else if (!strcmp(dev_attr->attr.name, "client_monitor_pending"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "server_monitor_conn_id")) {
+ return sprintf(buf, "%d\n",
+ device_info.ServerMonitorConnectionId);
+ } else if (!strcmp(dev_attr->attr.name, "client_monitor_pending")) {
return sprintf(buf, "%d\n", device_info.ClientMonitorPending);
- }
- else if (!strcmp(dev_attr->attr.name, "client_monitor_latency"))
- {
+ } else if (!strcmp(dev_attr->attr.name, "client_monitor_latency")) {
return sprintf(buf, "%d\n", device_info.ClientMonitorLatency);
- }
- else if (!strcmp(dev_attr->attr.name, "client_monitor_conn_id"))
- {
- return sprintf(buf, "%d\n", device_info.ClientMonitorConnectionId);
- }
- else
- {
+ } else if (!strcmp(dev_attr->attr.name, "client_monitor_conn_id")) {
+ return sprintf(buf, "%d\n",
+ device_info.ClientMonitorConnectionId);
+ } else {
return 0;
}
}
-/*++
-
-Name: vmbus_show_class_id()
-
-Desc: Show the device class id in sysfs
-
---*/
-/* static ssize_t vmbus_show_class_id(struct device *dev, struct device_attribute *attr, char *buf) */
-/* { */
-/* struct device_context *device_ctx = device_to_device_context(dev); */
-/* return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}\n", */
-/* device_ctx->class_id[3], device_ctx->class_id[2], device_ctx->class_id[1], device_ctx->class_id[0], */
-/* device_ctx->class_id[5], device_ctx->class_id[4], */
-/* device_ctx->class_id[7], device_ctx->class_id[6], */
-/* device_ctx->class_id[8], device_ctx->class_id[9], device_ctx->class_id[10], device_ctx->class_id[11], device_ctx->class_id[12], device_ctx->class_id[13], device_ctx->class_id[14], device_ctx->class_id[15]); */
-/* } */
-
-/*++
-
-Name: vmbus_show_device_id()
-
-Desc: Show the device instance id in sysfs
-
---*/
-/* static ssize_t vmbus_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) */
-/* { */
-/* struct device_context *device_ctx = device_to_device_context(dev); */
-/* return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}\n", */
-/* device_ctx->device_id[3], device_ctx->device_id[2], device_ctx->device_id[1], device_ctx->device_id[0], */
-/* device_ctx->device_id[5], device_ctx->device_id[4], */
-/* device_ctx->device_id[7], device_ctx->device_id[6], */
-/* device_ctx->device_id[8], device_ctx->device_id[9], device_ctx->device_id[10], device_ctx->device_id[11], device_ctx->device_id[12], device_ctx->device_id[13], device_ctx->device_id[14], device_ctx->device_id[15]); */
-/* } */
-
-/*++
-
-Name: vmbus_bus_init()
-
-Desc: Main vmbus driver initialization routine. Here, we
- - initialize the vmbus driver context
- - setup various driver entry points
- - invoke the vmbus hv main init routine
- - get the irq resource
- - invoke the vmbus to add the vmbus root device
- - setup the vmbus root device
- - retrieve the channel offers
---*/
+/**
+ * vmbus_bus_init -Main vmbus driver initialization routine.
+ *
+ * Here, we
+ * - initialize the vmbus driver context
+ * - setup various driver entry points
+ * - invoke the vmbus hv main init routine
+ * - get the irq resource
+ * - invoke the vmbus to add the vmbus root device
+ * - setup the vmbus root device
+ * - retrieve the channel offers
+ */
static int vmbus_bus_init(PFN_DRIVERINITIALIZE pfn_drv_init)
{
- int ret=0;
- unsigned int vector=0;
-
- struct vmbus_driver_context *vmbus_drv_ctx=&g_vmbus_drv;
+ struct vmbus_driver_context *vmbus_drv_ctx = &g_vmbus_drv;
struct vmbus_driver *vmbus_drv_obj = &g_vmbus_drv.drv_obj;
-
- struct device_context *dev_ctx=&g_vmbus_drv.device_ctx;
+ struct device_context *dev_ctx = &g_vmbus_drv.device_ctx;
+ int ret;
+ unsigned int vector;
DPRINT_ENTER(VMBUS_DRV);
- /* Set this up to allow lower layer to callback to add/remove child devices on the bus */
+ /*
+ * Set this up to allow lower layer to callback to add/remove child
+ * devices on the bus
+ */
vmbus_drv_obj->OnChildDeviceCreate = vmbus_child_device_create;
vmbus_drv_obj->OnChildDeviceDestroy = vmbus_child_device_destroy;
vmbus_drv_obj->OnChildDeviceAdd = vmbus_child_device_register;
/* Call to bus driver to initialize */
ret = pfn_drv_init(&vmbus_drv_obj->Base);
- if (ret != 0)
- {
+ if (ret != 0) {
DPRINT_ERR(VMBUS_DRV, "Unable to initialize vmbus (%d)", ret);
goto cleanup;
}
/* Sanity checks */
- if (!vmbus_drv_obj->Base.OnDeviceAdd)
- {
+ if (!vmbus_drv_obj->Base.OnDeviceAdd) {
DPRINT_ERR(VMBUS_DRV, "OnDeviceAdd() routine not set");
ret = -1;
goto cleanup;
vmbus_drv_ctx->bus.name = vmbus_drv_obj->Base.name;
/* Initialize the bus context */
- tasklet_init(&vmbus_drv_ctx->msg_dpc, vmbus_msg_dpc, (unsigned long)vmbus_drv_obj);
- tasklet_init(&vmbus_drv_ctx->event_dpc, vmbus_event_dpc, (unsigned long)vmbus_drv_obj);
+ tasklet_init(&vmbus_drv_ctx->msg_dpc, vmbus_msg_dpc,
+ (unsigned long)vmbus_drv_obj);
+ tasklet_init(&vmbus_drv_ctx->event_dpc, vmbus_event_dpc,
+ (unsigned long)vmbus_drv_obj);
/* Now, register the bus driver with LDM */
ret = bus_register(&vmbus_drv_ctx->bus);
- if (ret)
- {
+ if (ret) {
ret = -1;
goto cleanup;
}
/* Get the interrupt resource */
- ret = request_irq(vmbus_irq,
- vmbus_isr,
- IRQF_SAMPLE_RANDOM,
- vmbus_drv_obj->Base.name,
- NULL);
+ ret = request_irq(vmbus_irq, vmbus_isr, IRQF_SAMPLE_RANDOM,
+ vmbus_drv_obj->Base.name, NULL);
- if (ret != 0)
- {
- DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to request IRQ %d", vmbus_irq);
+ if (ret != 0) {
+ DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to request IRQ %d",
+ vmbus_irq);
bus_unregister(&vmbus_drv_ctx->bus);
memset(dev_ctx, 0, sizeof(struct device_context));
ret = vmbus_drv_obj->Base.OnDeviceAdd(&dev_ctx->device_obj, &vector);
- if (ret != 0)
- {
- DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to add vmbus root device");
+ if (ret != 0) {
+ DPRINT_ERR(VMBUS_DRV,
+ "ERROR - Unable to add vmbus root device");
free_irq(vmbus_irq, NULL);
}
/* strcpy(dev_ctx->device.bus_id, dev_ctx->device_obj.name); */
dev_set_name(&dev_ctx->device, "vmbus_0_0");
- memcpy(&dev_ctx->class_id, &dev_ctx->device_obj.deviceType, sizeof(struct hv_guid));
- memcpy(&dev_ctx->device_id, &dev_ctx->device_obj.deviceInstance, sizeof(struct hv_guid));
+ memcpy(&dev_ctx->class_id, &dev_ctx->device_obj.deviceType,
+ sizeof(struct hv_guid));
+ memcpy(&dev_ctx->device_id, &dev_ctx->device_obj.deviceInstance,
+ sizeof(struct hv_guid));
/* No need to bind a driver to the root device. */
dev_ctx->device.parent = NULL;
- dev_ctx->device.bus = &vmbus_drv_ctx->bus; /* NULL; vmbus_remove() does not get invoked */
+ /* NULL; vmbus_remove() does not get invoked */
+ dev_ctx->device.bus = &vmbus_drv_ctx->bus;
/* Setup the device dispatch table */
dev_ctx->device.release = vmbus_bus_release;
/* Setup the bus as root device */
ret = device_register(&dev_ctx->device);
- if (ret)
- {
- DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to register vmbus root device");
+ if (ret) {
+ DPRINT_ERR(VMBUS_DRV,
+ "ERROR - Unable to register vmbus root device");
free_irq(vmbus_irq, NULL);
bus_unregister(&vmbus_drv_ctx->bus);
return ret;
}
-
-/*++
-
-Name: vmbus_bus_exit()
-
-Desc: Terminate the vmbus driver. This routine is opposite of vmbus_bus_init()
-
---*/
+/**
+ * vmbus_bus_exit - Terminate the vmbus driver.
+ *
+ * This routine is opposite of vmbus_bus_init()
+ */
static void vmbus_bus_exit(void)
{
struct vmbus_driver *vmbus_drv_obj = &g_vmbus_drv.drv_obj;
- struct vmbus_driver_context *vmbus_drv_ctx=&g_vmbus_drv;
+ struct vmbus_driver_context *vmbus_drv_ctx = &g_vmbus_drv;
- struct device_context *dev_ctx=&g_vmbus_drv.device_ctx;
+ struct device_context *dev_ctx = &g_vmbus_drv.device_ctx;
DPRINT_ENTER(VMBUS_DRV);
return;
}
-/*++
-
-Name: vmbus_child_driver_register()
-
-Desc: Register a vmbus's child driver
-
---*/
-int vmbus_child_driver_register(struct driver_context* driver_ctx)
+/**
+ * vmbus_child_driver_register - Register a vmbus's child driver
+ */
+int vmbus_child_driver_register(struct driver_context *driver_ctx)
{
struct vmbus_driver *vmbus_drv_obj = &g_vmbus_drv.drv_obj;
int ret;
DPRINT_ENTER(VMBUS_DRV);
- DPRINT_INFO(VMBUS_DRV, "child driver (%p) registering - name %s", driver_ctx, driver_ctx->driver.name);
+ DPRINT_INFO(VMBUS_DRV, "child driver (%p) registering - name %s",
+ driver_ctx, driver_ctx->driver.name);
/* The child driver on this vmbus */
driver_ctx->driver.bus = &g_vmbus_drv.bus;
return ret;
}
-
EXPORT_SYMBOL(vmbus_child_driver_register);
-/*++
-
-Name: vmbus_child_driver_unregister()
-
-Desc: Unregister a vmbus's child driver
-
---*/
-void vmbus_child_driver_unregister(struct driver_context* driver_ctx)
+/**
+ * vmbus_child_driver_unregister Unregister a vmbus's child driver
+ */
+void vmbus_child_driver_unregister(struct driver_context *driver_ctx)
{
DPRINT_ENTER(VMBUS_DRV);
- DPRINT_INFO(VMBUS_DRV, "child driver (%p) unregistering - name %s", driver_ctx, driver_ctx->driver.name);
+ DPRINT_INFO(VMBUS_DRV, "child driver (%p) unregistering - name %s",
+ driver_ctx, driver_ctx->driver.name);
driver_unregister(&driver_ctx->driver);
DPRINT_EXIT(VMBUS_DRV);
}
-
EXPORT_SYMBOL(vmbus_child_driver_unregister);
-/*++
-
-Name: vmbus_get_interface()
-
-Desc: Get the vmbus channel interface. This is invoked by child/client driver that sits
- above vmbus
---*/
+/**
+ * vmbus_get_interface - Get the vmbus channel interface.
+ *
+ * This is invoked by child/client driver that sits above vmbus
+ */
void vmbus_get_interface(struct vmbus_channel_interface *interface)
{
struct vmbus_driver *vmbus_drv_obj = &g_vmbus_drv.drv_obj;
vmbus_drv_obj->GetChannelInterface(interface);
}
-
EXPORT_SYMBOL(vmbus_get_interface);
-
-/*++
-
-Name: vmbus_child_device_get_info()
-
-Desc: Get the vmbus child device info. This is invoked to display various device attributes in sysfs.
---*/
-static void vmbus_child_device_get_info(struct hv_device *device_obj, struct hv_device_info *device_info)
+/**
+ * vmbus_child_device_get_info - Get the vmbus child device info.
+ *
+ * This is invoked to display various device attributes in sysfs.
+ */
+static void vmbus_child_device_get_info(struct hv_device *device_obj,
+ struct hv_device_info *device_info)
{
struct vmbus_driver *vmbus_drv_obj = &g_vmbus_drv.drv_obj;
vmbus_drv_obj->GetChannelInfo(device_obj, device_info);
}
-
-/*++
-
-Name: vmbus_child_device_create()
-
-Desc: Creates and registers a new child device on the vmbus.
-
---*/
+/**
+ * vmbus_child_device_create - Creates and registers a new child device on the vmbus.
+ */
static struct hv_device *vmbus_child_device_create(struct hv_guid *type,
struct hv_guid *instance,
void *context)
/* Allocate the new child device */
child_device_ctx = kzalloc(sizeof(struct device_context), GFP_KERNEL);
- if (!child_device_ctx)
- {
- DPRINT_ERR(VMBUS_DRV, "unable to allocate device_context for child device");
+ if (!child_device_ctx) {
+ DPRINT_ERR(VMBUS_DRV,
+ "unable to allocate device_context for child device");
DPRINT_EXIT(VMBUS_DRV);
return NULL;
}
DPRINT_DBG(VMBUS_DRV, "child device (%p) allocated - "
- "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x},"
- "id {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}",
+ "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x},"
+ "id {%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x}",
&child_device_ctx->device,
type->data[3], type->data[2], type->data[1], type->data[0],
type->data[5], type->data[4], type->data[7], type->data[6],
type->data[8], type->data[9], type->data[10], type->data[11],
type->data[12], type->data[13], type->data[14], type->data[15],
- instance->data[3], instance->data[2], instance->data[1], instance->data[0],
- instance->data[5], instance->data[4], instance->data[7], instance->data[6],
- instance->data[8], instance->data[9], instance->data[10], instance->data[11],
- instance->data[12], instance->data[13], instance->data[14], instance->data[15]);
+ instance->data[3], instance->data[2],
+ instance->data[1], instance->data[0],
+ instance->data[5], instance->data[4],
+ instance->data[7], instance->data[6],
+ instance->data[8], instance->data[9],
+ instance->data[10], instance->data[11],
+ instance->data[12], instance->data[13],
+ instance->data[14], instance->data[15]);
child_device_obj = &child_device_ctx->device_obj;
child_device_obj->context = context;
memcpy(&child_device_obj->deviceType, &type, sizeof(struct hv_guid));
- memcpy(&child_device_obj->deviceInstance, &instance, sizeof(struct hv_guid));
+ memcpy(&child_device_obj->deviceInstance, &instance,
+ sizeof(struct hv_guid));
memcpy(&child_device_ctx->class_id, &type, sizeof(struct hv_guid));
memcpy(&child_device_ctx->device_id, &instance, sizeof(struct hv_guid));
return child_device_obj;
}
-/*++
-
-Name: vmbus_child_device_register()
-
-Desc: Register the child device on the specified bus
-
---*/
-static int vmbus_child_device_register(struct hv_device *root_device_obj, struct hv_device *child_device_obj)
+/**
+ * vmbus_child_device_register - Register the child device on the specified bus
+ */
+static int vmbus_child_device_register(struct hv_device *root_device_obj,
+ struct hv_device *child_device_obj)
{
- int ret=0;
- struct device_context *root_device_ctx = to_device_context(root_device_obj);
- struct device_context *child_device_ctx = to_device_context(child_device_obj);
+ int ret = 0;
+ struct device_context *root_device_ctx =
+ to_device_context(root_device_obj);
+ struct device_context *child_device_ctx =
+ to_device_context(child_device_obj);
static atomic_t device_num = ATOMIC_INIT(0);
DPRINT_ENTER(VMBUS_DRV);
- DPRINT_DBG(VMBUS_DRV, "child device (%p) registering", child_device_ctx);
+ DPRINT_DBG(VMBUS_DRV, "child device (%p) registering",
+ child_device_ctx);
/* Make sure we are not registered already */
-
- if (strlen(dev_name(&child_device_ctx->device)) != 0)
- {
- DPRINT_ERR(VMBUS_DRV, "child device (%p) already registered - busid %s", child_device_ctx, dev_name(&child_device_ctx->device));
+ if (strlen(dev_name(&child_device_ctx->device)) != 0) {
+ DPRINT_ERR(VMBUS_DRV,
+ "child device (%p) already registered - busid %s",
+ child_device_ctx,
+ dev_name(&child_device_ctx->device));
ret = -1;
goto Cleanup;
}
/* Set the device bus id. Otherwise, device_register()will fail. */
- dev_set_name(&child_device_ctx->device, "vmbus_0_%d", atomic_inc_return(&device_num));
+ dev_set_name(&child_device_ctx->device, "vmbus_0_%d",
+ atomic_inc_return(&device_num));
/* The new device belongs to this bus */
child_device_ctx->device.bus = &g_vmbus_drv.bus; /* device->dev.bus; */
child_device_ctx->device.parent = &root_device_ctx->device;
child_device_ctx->device.release = vmbus_device_release;
- /* Register with the LDM. This will kick off the driver/device binding...which will */
- /* eventually call vmbus_match() and vmbus_probe() */
+ /*
+ * Register with the LDM. This will kick off the driver/device
+ * binding...which will eventually call vmbus_match() and vmbus_probe()
+ */
ret = device_register(&child_device_ctx->device);
/* vmbus_probe() error does not get propergate to device_register(). */
ret = child_device_ctx->probe_error;
if (ret)
- DPRINT_ERR(VMBUS_DRV, "unable to register child device (%p)", &child_device_ctx->device);
+ DPRINT_ERR(VMBUS_DRV, "unable to register child device (%p)",
+ &child_device_ctx->device);
else
- DPRINT_INFO(VMBUS_DRV, "child device (%p) registered", &child_device_ctx->device);
+ DPRINT_INFO(VMBUS_DRV, "child device (%p) registered",
+ &child_device_ctx->device);
Cleanup:
DPRINT_EXIT(VMBUS_DRV);
return ret;
}
-/*++
-
-Name: vmbus_child_device_unregister()
-
-Desc: Remove the specified child device from the vmbus.
-
---*/
+/**
+ * vmbus_child_device_unregister - Remove the specified child device from the vmbus.
+ */
static void vmbus_child_device_unregister(struct hv_device *device_obj)
{
struct device_context *device_ctx = to_device_context(device_obj);
DPRINT_ENTER(VMBUS_DRV);
- DPRINT_INFO(VMBUS_DRV, "unregistering child device (%p)", &device_ctx->device);
+ DPRINT_INFO(VMBUS_DRV, "unregistering child device (%p)",
+ &device_ctx->device);
- /* Kick off the process of unregistering the device. */
- /* This will call vmbus_remove() and eventually vmbus_device_release() */
+ /*
+ * Kick off the process of unregistering the device.
+ * This will call vmbus_remove() and eventually vmbus_device_release()
+ */
device_unregister(&device_ctx->device);
- DPRINT_INFO(VMBUS_DRV, "child device (%p) unregistered", &device_ctx->device);
+ DPRINT_INFO(VMBUS_DRV, "child device (%p) unregistered",
+ &device_ctx->device);
DPRINT_EXIT(VMBUS_DRV);
}
-
-/*++
-
-Name: vmbus_child_device_destroy()
-
-Desc: Destroy the specified child device on the vmbus.
-
---*/
+/**
+ * vmbus_child_device_destroy - Destroy the specified child device on the vmbus.
+ */
static void vmbus_child_device_destroy(struct hv_device *device_obj)
{
DPRINT_ENTER(VMBUS_DRV);
DPRINT_EXIT(VMBUS_DRV);
}
-/*++
-
-Name: vmbus_uevent()
-
-Desc: This routine is invoked when a device is added or removed on the vmbus to generate a uevent to udev in the
- userspace. The udev will then look at its rule and the uevent generated here to load the appropriate driver
-
---*/
+/**
+ * vmbus_uevent - add uevent for our device
+ *
+ * This routine is invoked when a device is added or removed on the vmbus to
+ * generate a uevent to udev in the userspace. The udev will then look at its
+ * rule and the uevent generated here to load the appropriate driver
+ */
static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env)
{
struct device_context *device_ctx = device_to_device_context(device);
- int i=0;
- int len=0;
+ int i = 0;
+ int len = 0;
int ret;
DPRINT_ENTER(VMBUS_DRV);
- DPRINT_INFO(VMBUS_DRV, "generating uevent - VMBUS_DEVICE_CLASS_GUID={%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}",
- device_ctx->class_id.data[3], device_ctx->class_id.data[2],
- device_ctx->class_id.data[1], device_ctx->class_id.data[0],
- device_ctx->class_id.data[5], device_ctx->class_id.data[4],
- device_ctx->class_id.data[7], device_ctx->class_id.data[6],
- device_ctx->class_id.data[8], device_ctx->class_id.data[9],
- device_ctx->class_id.data[10], device_ctx->class_id.data[11],
- device_ctx->class_id.data[12], device_ctx->class_id.data[13],
- device_ctx->class_id.data[14], device_ctx->class_id.data[15]);
+ DPRINT_INFO(VMBUS_DRV, "generating uevent - VMBUS_DEVICE_CLASS_GUID={"
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x}",
+ device_ctx->class_id.data[3], device_ctx->class_id.data[2],
+ device_ctx->class_id.data[1], device_ctx->class_id.data[0],
+ device_ctx->class_id.data[5], device_ctx->class_id.data[4],
+ device_ctx->class_id.data[7], device_ctx->class_id.data[6],
+ device_ctx->class_id.data[8], device_ctx->class_id.data[9],
+ device_ctx->class_id.data[10],
+ device_ctx->class_id.data[11],
+ device_ctx->class_id.data[12],
+ device_ctx->class_id.data[13],
+ device_ctx->class_id.data[14],
+ device_ctx->class_id.data[15]);
env->envp_idx = i;
env->buflen = len;
- ret = add_uevent_var(env,
- "VMBUS_DEVICE_CLASS_GUID={%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}",
- device_ctx->class_id.data[3], device_ctx->class_id.data[2],
- device_ctx->class_id.data[1], device_ctx->class_id.data[0],
- device_ctx->class_id.data[5], device_ctx->class_id.data[4],
- device_ctx->class_id.data[7], device_ctx->class_id.data[6],
- device_ctx->class_id.data[8], device_ctx->class_id.data[9],
- device_ctx->class_id.data[10], device_ctx->class_id.data[11],
- device_ctx->class_id.data[12], device_ctx->class_id.data[13],
- device_ctx->class_id.data[14], device_ctx->class_id.data[15]);
+ ret = add_uevent_var(env, "VMBUS_DEVICE_CLASS_GUID={"
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x}",
+ device_ctx->class_id.data[3],
+ device_ctx->class_id.data[2],
+ device_ctx->class_id.data[1],
+ device_ctx->class_id.data[0],
+ device_ctx->class_id.data[5],
+ device_ctx->class_id.data[4],
+ device_ctx->class_id.data[7],
+ device_ctx->class_id.data[6],
+ device_ctx->class_id.data[8],
+ device_ctx->class_id.data[9],
+ device_ctx->class_id.data[10],
+ device_ctx->class_id.data[11],
+ device_ctx->class_id.data[12],
+ device_ctx->class_id.data[13],
+ device_ctx->class_id.data[14],
+ device_ctx->class_id.data[15]);
if (ret)
- {
return ret;
- }
-
- ret = add_uevent_var(env,
- "VMBUS_DEVICE_DEVICE_GUID={%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}",
- device_ctx->device_id.data[3], device_ctx->device_id.data[2],
- device_ctx->device_id.data[1], device_ctx->device_id.data[0],
- device_ctx->device_id.data[5], device_ctx->device_id.data[4],
- device_ctx->device_id.data[7], device_ctx->device_id.data[6],
- device_ctx->device_id.data[8], device_ctx->device_id.data[9],
- device_ctx->device_id.data[10], device_ctx->device_id.data[11],
- device_ctx->device_id.data[12], device_ctx->device_id.data[13],
- device_ctx->device_id.data[14], device_ctx->device_id.data[15]);
+ ret = add_uevent_var(env, "VMBUS_DEVICE_DEVICE_GUID={"
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x}",
+ device_ctx->device_id.data[3],
+ device_ctx->device_id.data[2],
+ device_ctx->device_id.data[1],
+ device_ctx->device_id.data[0],
+ device_ctx->device_id.data[5],
+ device_ctx->device_id.data[4],
+ device_ctx->device_id.data[7],
+ device_ctx->device_id.data[6],
+ device_ctx->device_id.data[8],
+ device_ctx->device_id.data[9],
+ device_ctx->device_id.data[10],
+ device_ctx->device_id.data[11],
+ device_ctx->device_id.data[12],
+ device_ctx->device_id.data[13],
+ device_ctx->device_id.data[14],
+ device_ctx->device_id.data[15]);
if (ret)
- {
return ret;
- }
env->envp[env->envp_idx] = NULL;
return 0;
}
-/*++
-
-Name: vmbus_match()
-
-Desc: Attempt to match the specified device to the specified driver
-
---*/
+/**
+ * vmbus_match - Attempt to match the specified device to the specified driver
+ */
static int vmbus_match(struct device *device, struct device_driver *driver)
{
- int match=0;
+ int match = 0;
struct driver_context *driver_ctx = driver_to_driver_context(driver);
struct device_context *device_ctx = device_to_device_context(device);
DPRINT_ENTER(VMBUS_DRV);
/* We found our driver ? */
- if (memcmp(&device_ctx->class_id, &driver_ctx->class_id, sizeof(struct hv_guid)) == 0)
- {
- /* !! NOTE: The driver_ctx is not a vmbus_drv_ctx. We typecast it here to access the */
- /* struct hv_driver field */
- struct vmbus_driver_context *vmbus_drv_ctx = (struct vmbus_driver_context*)driver_ctx;
+ if (memcmp(&device_ctx->class_id, &driver_ctx->class_id,
+ sizeof(struct hv_guid)) == 0) {
+ /*
+ * !! NOTE: The driver_ctx is not a vmbus_drv_ctx. We typecast
+ * it here to access the struct hv_driver field
+ */
+ struct vmbus_driver_context *vmbus_drv_ctx =
+ (struct vmbus_driver_context *)driver_ctx;
+
device_ctx->device_obj.Driver = &vmbus_drv_ctx->drv_obj.Base;
- DPRINT_INFO(VMBUS_DRV, "device object (%p) set to driver object (%p)", &device_ctx->device_obj, device_ctx->device_obj.Driver);
+ DPRINT_INFO(VMBUS_DRV,
+ "device object (%p) set to driver object (%p)",
+ &device_ctx->device_obj,
+ device_ctx->device_obj.Driver);
match = 1;
}
return match;
}
-
-/*++
-
-Name: vmbus_probe_failed_cb()
-
-Desc: Callback when a driver probe failed in vmbus_probe(). We need a callback because
- we cannot invoked device_unregister() inside vmbus_probe() since vmbus_probe() may be
- invoked inside device_register() i.e. we cannot call device_unregister() inside
- device_register()
---*/
+/**
+ * vmbus_probe_failed_cb - Callback when a driver probe failed in vmbus_probe()
+ *
+ * We need a callback because we cannot invoked device_unregister() inside
+ * vmbus_probe() since vmbus_probe() may be invoked inside device_register()
+ * i.e. we cannot call device_unregister() inside device_register()
+ */
static void vmbus_probe_failed_cb(struct work_struct *context)
{
- struct device_context *device_ctx = (struct device_context*)context;
-
+ struct device_context *device_ctx = (struct device_context *)context;
DPRINT_ENTER(VMBUS_DRV);
- /* Kick off the process of unregistering the device. */
- /* This will call vmbus_remove() and eventually vmbus_device_release() */
+ /*
+ * Kick off the process of unregistering the device.
+ * This will call vmbus_remove() and eventually vmbus_device_release()
+ */
device_unregister(&device_ctx->device);
/* put_device(&device_ctx->device); */
DPRINT_EXIT(VMBUS_DRV);
}
-
-/*++
-
-Name: vmbus_probe()
-
-Desc: Add the new vmbus's child device
-
---*/
+/**
+ * vmbus_probe - Add the new vmbus's child device
+ */
static int vmbus_probe(struct device *child_device)
{
- int ret=0;
- struct driver_context *driver_ctx = driver_to_driver_context(child_device->driver);
- struct device_context *device_ctx = device_to_device_context(child_device);
+ int ret = 0;
+ struct driver_context *driver_ctx =
+ driver_to_driver_context(child_device->driver);
+ struct device_context *device_ctx =
+ device_to_device_context(child_device);
DPRINT_ENTER(VMBUS_DRV);
/* Let the specific open-source driver handles the probe if it can */
- if (driver_ctx->probe)
- {
+ if (driver_ctx->probe) {
ret = device_ctx->probe_error = driver_ctx->probe(child_device);
- if (ret != 0)
- {
- DPRINT_ERR(VMBUS_DRV, "probe() failed for device %s (%p) on driver %s (%d)...", dev_name(child_device), child_device, child_device->driver->name, ret);
-
- INIT_WORK(&device_ctx->probe_failed_work_item, vmbus_probe_failed_cb);
+ if (ret != 0) {
+ DPRINT_ERR(VMBUS_DRV, "probe() failed for device %s "
+ "(%p) on driver %s (%d)...",
+ dev_name(child_device), child_device,
+ child_device->driver->name, ret);
+
+ INIT_WORK(&device_ctx->probe_failed_work_item,
+ vmbus_probe_failed_cb);
schedule_work(&device_ctx->probe_failed_work_item);
}
- }
- else
- {
- DPRINT_ERR(VMBUS_DRV, "probe() method not set for driver - %s", child_device->driver->name);
+ } else {
+ DPRINT_ERR(VMBUS_DRV, "probe() method not set for driver - %s",
+ child_device->driver->name);
ret = -1;
}
return ret;
}
-
-/*++
-
-Name: vmbus_remove()
-
-Desc: Remove a vmbus device
-
---*/
+/**
+ * vmbus_remove - Remove a vmbus device
+ */
static int vmbus_remove(struct device *child_device)
{
- int ret=0;
+ int ret;
struct driver_context *driver_ctx;
DPRINT_ENTER(VMBUS_DRV);
/* Special case root bus device */
- if (child_device->parent == NULL)
- {
- /* No-op since it is statically defined and handle in vmbus_bus_exit() */
+ if (child_device->parent == NULL) {
+ /*
+ * No-op since it is statically defined and handle in
+ * vmbus_bus_exit()
+ */
DPRINT_EXIT(VMBUS_DRV);
return 0;
}
- if (child_device->driver)
- {
+ if (child_device->driver) {
driver_ctx = driver_to_driver_context(child_device->driver);
- /* Let the specific open-source driver handles the removal if it can */
- if (driver_ctx->remove)
- {
+ /*
+ * Let the specific open-source driver handles the removal if
+ * it can
+ */
+ if (driver_ctx->remove) {
ret = driver_ctx->remove(child_device);
- }
- else
- {
- DPRINT_ERR(VMBUS_DRV, "remove() method not set for driver - %s", child_device->driver->name);
+ } else {
+ DPRINT_ERR(VMBUS_DRV,
+ "remove() method not set for driver - %s",
+ child_device->driver->name);
ret = -1;
}
}
- else
- {
-
- }
DPRINT_EXIT(VMBUS_DRV);
return 0;
}
-/*++
-
-Name: vmbus_shutdown()
-
-Desc: Shutdown a vmbus device
-
---*/
+/**
+ * vmbus_shutdown - Shutdown a vmbus device
+ */
static void vmbus_shutdown(struct device *child_device)
{
struct driver_context *driver_ctx;
DPRINT_ENTER(VMBUS_DRV);
/* Special case root bus device */
- if (child_device->parent == NULL)
- {
- /* No-op since it is statically defined and handle in vmbus_bus_exit() */
+ if (child_device->parent == NULL) {
+ /*
+ * No-op since it is statically defined and handle in
+ * vmbus_bus_exit()
+ */
DPRINT_EXIT(VMBUS_DRV);
return;
}
/* The device may not be attached yet */
- if (!child_device->driver)
- {
+ if (!child_device->driver) {
DPRINT_EXIT(VMBUS_DRV);
return;
}
/* Let the specific open-source driver handles the removal if it can */
if (driver_ctx->shutdown)
- {
driver_ctx->shutdown(child_device);
- }
DPRINT_EXIT(VMBUS_DRV);
return;
}
-/*++
-
-Name: vmbus_bus_release()
-
-Desc: Final callback release of the vmbus root device
-
---*/
+/**
+ * vmbus_bus_release - Final callback release of the vmbus root device
+ */
static void vmbus_bus_release(struct device *device)
{
DPRINT_ENTER(VMBUS_DRV);
DPRINT_EXIT(VMBUS_DRV);
}
-/*++
-
-Name: vmbus_device_release()
-
-Desc: Final callback release of the vmbus child device
-
---*/
+/**
+ * vmbus_device_release - Final callback release of the vmbus child device
+ */
static void vmbus_device_release(struct device *device)
{
struct device_context *device_ctx = device_to_device_context(device);
kfree(device_ctx);
/* !!DO NOT REFERENCE device_ctx anymore at this point!! */
-
DPRINT_EXIT(VMBUS_DRV);
return;
}
-/*++
-
-Name: vmbus_msg_dpc()
-
-Desc: Tasklet routine to handle hypervisor messages
-
---*/
+/**
+ * vmbus_msg_dpc - Tasklet routine to handle hypervisor messages
+ */
static void vmbus_msg_dpc(unsigned long data)
{
struct vmbus_driver *vmbus_drv_obj = (struct vmbus_driver *)data;
DPRINT_EXIT(VMBUS_DRV);
}
-/*++
-
-Name: vmbus_msg_dpc()
-
-Desc: Tasklet routine to handle hypervisor events
-
---*/
+/**
+ * vmbus_msg_dpc - Tasklet routine to handle hypervisor events
+ */
static void vmbus_event_dpc(unsigned long data)
{
struct vmbus_driver *vmbus_drv_obj = (struct vmbus_driver *)data;
DPRINT_EXIT(VMBUS_DRV);
}
-/*++
-
-Name: vmbus_msg_dpc()
-
-Desc: ISR routine
-
---*/
-static irqreturn_t vmbus_isr(int irq, void* dev_id)
+static irqreturn_t vmbus_isr(int irq, void *dev_id)
{
- int ret=0;
struct vmbus_driver *vmbus_driver_obj = &g_vmbus_drv.drv_obj;
+ int ret;
DPRINT_ENTER(VMBUS_DRV);
ret = vmbus_driver_obj->OnIsr(&vmbus_driver_obj->Base);
/* Schedules a dpc if necessary */
- if (ret > 0)
- {
- if (test_bit(0, (unsigned long*)&ret))
- {
+ if (ret > 0) {
+ if (test_bit(0, (unsigned long *)&ret))
tasklet_schedule(&g_vmbus_drv.msg_dpc);
- }
- if (test_bit(1, (unsigned long*)&ret))
- {
+ if (test_bit(1, (unsigned long *)&ret))
tasklet_schedule(&g_vmbus_drv.event_dpc);
- }
DPRINT_EXIT(VMBUS_DRV);
return IRQ_HANDLED;
- }
- else
- {
+ } else {
DPRINT_EXIT(VMBUS_DRV);
return IRQ_NONE;
}
}
-MODULE_LICENSE("GPL");
-
-
-/*++
-
-Name: vmbus_init()
-
-Desc: Main vmbus driver entry routine
-
---*/
static int __init vmbus_init(void)
{
- int ret=0;
+ int ret = 0;
DPRINT_ENTER(VMBUS_DRV);
DPRINT_INFO(VMBUS_DRV,
"Vmbus initializing.... current log level 0x%x (%x,%x)",
vmbus_loglevel, HIWORD(vmbus_loglevel), LOWORD(vmbus_loglevel));
-/* Todo: it is used for loglevel, to be ported to new kernel. */
+ /* Todo: it is used for loglevel, to be ported to new kernel. */
ret = vmbus_bus_init(VmbusInitialize);
return ret;
}
-
-
-/*++
-
-Name: vmbus_init()
-
-Desc: Main vmbus driver exit routine
-
---*/
static void __exit vmbus_exit(void)
{
DPRINT_ENTER(VMBUS_DRV);
vmbus_bus_exit();
-/* Todo: it is used for loglevel, to be ported to new kernel. */
+ /* Todo: it is used for loglevel, to be ported to new kernel. */
DPRINT_EXIT(VMBUS_DRV);
-
return;
}
+MODULE_LICENSE("GPL");
module_param(vmbus_irq, int, S_IRUGO);
module_param(vmbus_loglevel, int, S_IRUGO);
module_init(vmbus_init);
module_exit(vmbus_exit);
-/* eof */
projects / platform / kernel / linux-stable.git / commitdiff