From: Greg Kroah-Hartman Date: Thu, 6 May 2010 05:25:23 +0000 (-0700) Subject: Staging: hv: rename Vmbus.c to vmbus.c X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=98109c5a961ba77e0910a5bec66bd57a673fad52;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git Staging: hv: rename Vmbus.c to vmbus.c Cc: Hank Janssen Cc: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/hv/Makefile b/drivers/staging/hv/Makefile index 6e8e8e82263a..f58a4e7bf6d9 100644 --- a/drivers/staging/hv/Makefile +++ b/drivers/staging/hv/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_HYPERV_NET) += hv_netvsc.o obj-$(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 ring_buffer.o hv_storvsc-objs := storvsc_drv.o StorVsc.o hv_blkvsc-objs := blkvsc_drv.o blkvsc.o diff --git a/drivers/staging/hv/Vmbus.c b/drivers/staging/hv/Vmbus.c deleted file mode 100644 index 90b14beec3aa..000000000000 --- a/drivers/staging/hv/Vmbus.c +++ /dev/null @@ -1,312 +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 - * Hank Janssen - * - */ -#include -#include -#include -#include "osd.h" -#include "logging.h" -#include "VersionInfo.h" -#include "VmbusPrivate.h" - -static const char *gDriverName = "vmbus"; - -/* - * 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 */ - -/* - * VmbusGetChannelOffers - Retrieve the channel offers from the parent partition - */ -static void VmbusGetChannelOffers(void) -{ - DPRINT_ENTER(VMBUS); - VmbusChannelRequestOffers(); - DPRINT_EXIT(VMBUS); -} - -/* - * VmbusGetChannelInterface - Get the channel interface - */ -static void VmbusGetChannelInterface(struct vmbus_channel_interface *Interface) -{ - GetChannelInterface(Interface); -} - -/* - * VmbusGetChannelInfo - Get the device info for the specified device object - */ -static void VmbusGetChannelInfo(struct hv_device *DeviceObject, - struct hv_device_info *DeviceInfo) -{ - GetChannelInfo(DeviceObject, DeviceInfo); -} - -/* - * VmbusCreateChildDevice - Creates the child device on the bus that represents the channel offer - */ -struct hv_device *VmbusChildDeviceCreate(struct hv_guid *DeviceType, - struct hv_guid *DeviceInstance, - void *Context) -{ - struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver; - - return vmbusDriver->OnChildDeviceCreate(DeviceType, DeviceInstance, - Context); -} - -/* - * VmbusChildDeviceAdd - Registers the child device with the vmbus - */ -int VmbusChildDeviceAdd(struct hv_device *ChildDevice) -{ - struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver; - - return vmbusDriver->OnChildDeviceAdd(gDevice, ChildDevice); -} - -/* - * VmbusChildDeviceRemove Unregisters the child device from the vmbus - */ -void VmbusChildDeviceRemove(struct hv_device *ChildDevice) -{ - struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver; - - vmbusDriver->OnChildDeviceRemove(ChildDevice); -} - -/* - * VmbusOnDeviceAdd - Callback when the root bus device is added - */ -static int VmbusOnDeviceAdd(struct hv_device *dev, void *AdditionalInfo) -{ - u32 *irqvector = AdditionalInfo; - int ret; - - DPRINT_ENTER(VMBUS); - - 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(HvSynicInit, (void *)irqvector, 1); - - /* Connect to VMBus in the root partition */ - ret = VmbusConnect(); - - /* VmbusSendEvent(device->localPortId+1); */ - DPRINT_EXIT(VMBUS); - - return ret; -} - -/* - * VmbusOnDeviceRemove - Callback when the root bus device is removed - */ -static int VmbusOnDeviceRemove(struct hv_device *dev) -{ - int ret = 0; - - DPRINT_ENTER(VMBUS); - VmbusChannelReleaseUnattachedChannels(); - VmbusDisconnect(); - on_each_cpu(HvSynicCleanup, NULL, 1); - DPRINT_EXIT(VMBUS); - - 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; */ - - DPRINT_ENTER(VMBUS); - HvCleanup(); - DPRINT_EXIT(VMBUS); -} - -/* - * VmbusOnMsgDPC - DPC routine to handle messages from the hypervisior - */ -static void VmbusOnMsgDPC(struct hv_driver *drv) -{ - int cpu = smp_processor_id(); - void *page_addr = gHvContext.synICMessagePage[cpu]; - struct hv_message *msg = (struct hv_message *)page_addr + - VMBUS_MESSAGE_SINT; - struct hv_message *copied; - - while (1) { - if (msg->Header.MessageType == HvMessageTypeNone) { - /* no msg */ - break; - } else { - copied = kmalloc(sizeof(*copied), GFP_ATOMIC); - if (copied == NULL) - continue; - - memcpy(copied, msg, sizeof(*copied)); - osd_schedule_callback(gVmbusConnection.WorkQueue, - VmbusOnChannelMessage, - (void *)copied); - } - - msg->Header.MessageType = HvMessageTypeNone; - - /* - * Make sure the write to MessageType (ie set to - * HvMessageTypeNone) 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.MessageFlags.MessagePending) { - /* - * This will cause message queue rescan to - * possibly deliver another msg from the - * hypervisor - */ - wrmsrl(HV_X64_MSR_EOM, 0); - } - } -} - -/* - * VmbusOnEventDPC - DPC routine to handle events from the hypervisior - */ -static void VmbusOnEventDPC(struct hv_driver *drv) -{ - /* TODO: Process any events */ - VmbusOnEvents(); -} - -/* - * VmbusOnISR - ISR routine - */ -static int VmbusOnISR(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 = gHvContext.synICMessagePage[cpu]; - msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT; - - DPRINT_ENTER(VMBUS); - - /* Check if there are actual msgs to be process */ - if (msg->Header.MessageType != HvMessageTypeNone) { - DPRINT_DBG(VMBUS, "received msg type %d size %d", - msg->Header.MessageType, - msg->Header.PayloadSize); - ret |= 0x1; - } - - /* TODO: Check if there are events to be process */ - page_addr = gHvContext.synICEventPage[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; - } - - DPRINT_EXIT(VMBUS); - return ret; -} - -/* - * VmbusInitialize - Main entry point - */ -int VmbusInitialize(struct hv_driver *drv) -{ - struct vmbus_driver *driver = (struct vmbus_driver *)drv; - int ret; - - DPRINT_ENTER(VMBUS); - - 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_MULITPAGE_BUFFER)); - - drv->name = gDriverName; - memcpy(&drv->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid)); - - /* Setup dispatch table */ - driver->Base.OnDeviceAdd = VmbusOnDeviceAdd; - driver->Base.OnDeviceRemove = VmbusOnDeviceRemove; - driver->Base.OnCleanup = VmbusOnCleanup; - driver->OnIsr = VmbusOnISR; - driver->OnMsgDpc = VmbusOnMsgDPC; - driver->OnEventDpc = VmbusOnEventDPC; - driver->GetChannelOffers = VmbusGetChannelOffers; - driver->GetChannelInterface = VmbusGetChannelInterface; - driver->GetChannelInfo = VmbusGetChannelInfo; - - /* Hypervisor initialization...setup hypercall page..etc */ - ret = HvInit(); - if (ret != 0) - DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x", - ret); - gDriver = drv; - - DPRINT_EXIT(VMBUS); - - return ret; -} diff --git a/drivers/staging/hv/vmbus.c b/drivers/staging/hv/vmbus.c new file mode 100644 index 000000000000..90b14beec3aa --- /dev/null +++ b/drivers/staging/hv/vmbus.c @@ -0,0 +1,312 @@ +/* + * 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 + * Hank Janssen + * + */ +#include +#include +#include +#include "osd.h" +#include "logging.h" +#include "VersionInfo.h" +#include "VmbusPrivate.h" + +static const char *gDriverName = "vmbus"; + +/* + * 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 */ + +/* + * VmbusGetChannelOffers - Retrieve the channel offers from the parent partition + */ +static void VmbusGetChannelOffers(void) +{ + DPRINT_ENTER(VMBUS); + VmbusChannelRequestOffers(); + DPRINT_EXIT(VMBUS); +} + +/* + * VmbusGetChannelInterface - Get the channel interface + */ +static void VmbusGetChannelInterface(struct vmbus_channel_interface *Interface) +{ + GetChannelInterface(Interface); +} + +/* + * VmbusGetChannelInfo - Get the device info for the specified device object + */ +static void VmbusGetChannelInfo(struct hv_device *DeviceObject, + struct hv_device_info *DeviceInfo) +{ + GetChannelInfo(DeviceObject, DeviceInfo); +} + +/* + * VmbusCreateChildDevice - Creates the child device on the bus that represents the channel offer + */ +struct hv_device *VmbusChildDeviceCreate(struct hv_guid *DeviceType, + struct hv_guid *DeviceInstance, + void *Context) +{ + struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver; + + return vmbusDriver->OnChildDeviceCreate(DeviceType, DeviceInstance, + Context); +} + +/* + * VmbusChildDeviceAdd - Registers the child device with the vmbus + */ +int VmbusChildDeviceAdd(struct hv_device *ChildDevice) +{ + struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver; + + return vmbusDriver->OnChildDeviceAdd(gDevice, ChildDevice); +} + +/* + * VmbusChildDeviceRemove Unregisters the child device from the vmbus + */ +void VmbusChildDeviceRemove(struct hv_device *ChildDevice) +{ + struct vmbus_driver *vmbusDriver = (struct vmbus_driver *)gDriver; + + vmbusDriver->OnChildDeviceRemove(ChildDevice); +} + +/* + * VmbusOnDeviceAdd - Callback when the root bus device is added + */ +static int VmbusOnDeviceAdd(struct hv_device *dev, void *AdditionalInfo) +{ + u32 *irqvector = AdditionalInfo; + int ret; + + DPRINT_ENTER(VMBUS); + + 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(HvSynicInit, (void *)irqvector, 1); + + /* Connect to VMBus in the root partition */ + ret = VmbusConnect(); + + /* VmbusSendEvent(device->localPortId+1); */ + DPRINT_EXIT(VMBUS); + + return ret; +} + +/* + * VmbusOnDeviceRemove - Callback when the root bus device is removed + */ +static int VmbusOnDeviceRemove(struct hv_device *dev) +{ + int ret = 0; + + DPRINT_ENTER(VMBUS); + VmbusChannelReleaseUnattachedChannels(); + VmbusDisconnect(); + on_each_cpu(HvSynicCleanup, NULL, 1); + DPRINT_EXIT(VMBUS); + + 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; */ + + DPRINT_ENTER(VMBUS); + HvCleanup(); + DPRINT_EXIT(VMBUS); +} + +/* + * VmbusOnMsgDPC - DPC routine to handle messages from the hypervisior + */ +static void VmbusOnMsgDPC(struct hv_driver *drv) +{ + int cpu = smp_processor_id(); + void *page_addr = gHvContext.synICMessagePage[cpu]; + struct hv_message *msg = (struct hv_message *)page_addr + + VMBUS_MESSAGE_SINT; + struct hv_message *copied; + + while (1) { + if (msg->Header.MessageType == HvMessageTypeNone) { + /* no msg */ + break; + } else { + copied = kmalloc(sizeof(*copied), GFP_ATOMIC); + if (copied == NULL) + continue; + + memcpy(copied, msg, sizeof(*copied)); + osd_schedule_callback(gVmbusConnection.WorkQueue, + VmbusOnChannelMessage, + (void *)copied); + } + + msg->Header.MessageType = HvMessageTypeNone; + + /* + * Make sure the write to MessageType (ie set to + * HvMessageTypeNone) 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.MessageFlags.MessagePending) { + /* + * This will cause message queue rescan to + * possibly deliver another msg from the + * hypervisor + */ + wrmsrl(HV_X64_MSR_EOM, 0); + } + } +} + +/* + * VmbusOnEventDPC - DPC routine to handle events from the hypervisior + */ +static void VmbusOnEventDPC(struct hv_driver *drv) +{ + /* TODO: Process any events */ + VmbusOnEvents(); +} + +/* + * VmbusOnISR - ISR routine + */ +static int VmbusOnISR(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 = gHvContext.synICMessagePage[cpu]; + msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT; + + DPRINT_ENTER(VMBUS); + + /* Check if there are actual msgs to be process */ + if (msg->Header.MessageType != HvMessageTypeNone) { + DPRINT_DBG(VMBUS, "received msg type %d size %d", + msg->Header.MessageType, + msg->Header.PayloadSize); + ret |= 0x1; + } + + /* TODO: Check if there are events to be process */ + page_addr = gHvContext.synICEventPage[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; + } + + DPRINT_EXIT(VMBUS); + return ret; +} + +/* + * VmbusInitialize - Main entry point + */ +int VmbusInitialize(struct hv_driver *drv) +{ + struct vmbus_driver *driver = (struct vmbus_driver *)drv; + int ret; + + DPRINT_ENTER(VMBUS); + + 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_MULITPAGE_BUFFER)); + + drv->name = gDriverName; + memcpy(&drv->deviceType, &gVmbusDeviceType, sizeof(struct hv_guid)); + + /* Setup dispatch table */ + driver->Base.OnDeviceAdd = VmbusOnDeviceAdd; + driver->Base.OnDeviceRemove = VmbusOnDeviceRemove; + driver->Base.OnCleanup = VmbusOnCleanup; + driver->OnIsr = VmbusOnISR; + driver->OnMsgDpc = VmbusOnMsgDPC; + driver->OnEventDpc = VmbusOnEventDPC; + driver->GetChannelOffers = VmbusGetChannelOffers; + driver->GetChannelInterface = VmbusGetChannelInterface; + driver->GetChannelInfo = VmbusGetChannelInfo; + + /* Hypervisor initialization...setup hypercall page..etc */ + ret = HvInit(); + if (ret != 0) + DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x", + ret); + gDriver = drv; + + DPRINT_EXIT(VMBUS); + + return ret; +}