+++ /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 "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;
-}
#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 */
.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)
{
projects / platform / kernel / linux-rpi.git / commitdiff