/** @file\r
- XenBus Bus driver implemtation.\r
+ XenBus Bus driver implementation.\r
\r
This file implement the necessary to discover and enumerate Xen PV devices\r
through XenStore.\r
This file may be distributed separately from the Linux kernel, or\r
incorporated into other software packages, subject to the following license:\r
\r
- Permission is hereby granted, free of charge, to any person obtaining a copy\r
- of this source file (the "Software"), to deal in the Software without\r
- restriction, including without limitation the rights to use, copy, modify,\r
- merge, publish, distribute, sublicense, and/or sell copies of the Software,\r
- and to permit persons to whom the Software is furnished to do so, subject to\r
- the following conditions:\r
-\r
- The above copyright notice and this permission notice shall be included in\r
- all copies or substantial portions of the Software.\r
-\r
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\r
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\r
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\r
- FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\r
- IN THE SOFTWARE.\r
+ SPDX-License-Identifier: MIT\r
**/\r
\r
#include <Library/PrintLib.h>\r
\r
#include <IndustryStandard/Xen/io/xenbus.h>\r
\r
-STATIC XENBUS_PRIVATE_DATA gXenBusPrivateData;\r
-\r
-STATIC XENBUS_DEVICE_PATH gXenBusDevicePathTemplate = {\r
- .Vendor.Header.Type = HARDWARE_DEVICE_PATH,\r
- .Vendor.Header.SubType = HW_VENDOR_DP,\r
- .Vendor.Header.Length[0] = (UINT8) sizeof (XENBUS_DEVICE_PATH),\r
- .Vendor.Header.Length[1] = (UINT8) (sizeof (XENBUS_DEVICE_PATH) >> 8),\r
- .Vendor.Guid = XENBUS_PROTOCOL_GUID,\r
- .Type = 0,\r
- .DeviceId = 0\r
+STATIC XENBUS_PRIVATE_DATA gXenBusPrivateData;\r
+\r
+STATIC XENBUS_DEVICE_PATH gXenBusDevicePathTemplate = {\r
+ { // Vendor\r
+ { // Vendor.Header\r
+ HARDWARE_DEVICE_PATH, // Vendor.Header.Type\r
+ HW_VENDOR_DP, // Vendor.Header.SubType\r
+ {\r
+ (UINT8)(sizeof (XENBUS_DEVICE_PATH)), // Vendor.Header.Length[0]\r
+ (UINT8)(sizeof (XENBUS_DEVICE_PATH) >> 8), // Vendor.Header.Length[1]\r
+ }\r
+ },\r
+ XENBUS_PROTOCOL_GUID, // Vendor.Guid\r
+ },\r
+ 0, // Type\r
+ 0 // DeviceId\r
};\r
\r
-\r
/**\r
Search our internal record of configured devices (not the XenStore) to\r
determine if the XenBus device indicated by Node is known to the system.\r
STATIC\r
XENBUS_PRIVATE_DATA *\r
XenBusDeviceInitialized (\r
- IN XENBUS_DEVICE *Dev,\r
- IN CONST CHAR8 *Node\r
+ IN XENBUS_DEVICE *Dev,\r
+ IN CONST CHAR8 *Node\r
)\r
{\r
- LIST_ENTRY *Entry;\r
- XENBUS_PRIVATE_DATA *Child;\r
- XENBUS_PRIVATE_DATA *Result;\r
+ LIST_ENTRY *Entry;\r
+ XENBUS_PRIVATE_DATA *Child;\r
+ XENBUS_PRIVATE_DATA *Result;\r
\r
if (IsListEmpty (&Dev->ChildList)) {\r
return NULL;\r
Result = NULL;\r
for (Entry = GetFirstNode (&Dev->ChildList);\r
!IsNodeAtEnd (&Dev->ChildList, Entry);\r
- Entry = GetNextNode (&Dev->ChildList, Entry)) {\r
+ Entry = GetNextNode (&Dev->ChildList, Entry))\r
+ {\r
Child = XENBUS_PRIVATE_DATA_FROM_LINK (Entry);\r
if (!AsciiStrCmp (Child->XenBusIo.Node, Node)) {\r
Result = Child;\r
STATIC\r
XenbusState\r
XenBusReadDriverState (\r
- IN CONST CHAR8 *Path\r
+ IN CONST CHAR8 *Path\r
)\r
{\r
- XenbusState State;\r
- CHAR8 *Ptr = NULL;\r
- XENSTORE_STATUS Status;\r
+ XenbusState State;\r
+ CHAR8 *Ptr = NULL;\r
+ XENSTORE_STATUS Status;\r
\r
Status = XenStoreRead (XST_NIL, Path, "state", NULL, (VOID **)&Ptr);\r
if (Status != XENSTORE_STATUS_SUCCESS) {\r
STATIC\r
EFI_STATUS\r
XenBusAddDevice (\r
- XENBUS_DEVICE *Dev,\r
- CONST CHAR8 *Type,\r
- CONST CHAR8 *Id)\r
+ XENBUS_DEVICE *Dev,\r
+ CONST CHAR8 *Type,\r
+ CONST CHAR8 *Id\r
+ )\r
{\r
- CHAR8 DevicePath[XENSTORE_ABS_PATH_MAX];\r
- XENSTORE_STATUS StatusXenStore;\r
- XENBUS_PRIVATE_DATA *Private;\r
- EFI_STATUS Status;\r
- XENBUS_DEVICE_PATH *TempXenBusPath;\r
- VOID *ChildPciIo;\r
-\r
- AsciiSPrint (DevicePath, sizeof (DevicePath),\r
- "device/%a/%a", Type, Id);\r
+ CHAR8 DevicePath[XENSTORE_ABS_PATH_MAX];\r
+ XENSTORE_STATUS StatusXenStore;\r
+ XENBUS_PRIVATE_DATA *Private;\r
+ EFI_STATUS Status;\r
+ XENBUS_DEVICE_PATH *TempXenBusPath;\r
+ VOID *ChildXenIo;\r
+\r
+ AsciiSPrint (\r
+ DevicePath,\r
+ sizeof (DevicePath),\r
+ "device/%a/%a",\r
+ Type,\r
+ Id\r
+ );\r
\r
if (XenStorePathExists (XST_NIL, DevicePath, "")) {\r
- XENBUS_PRIVATE_DATA *Child;\r
- enum xenbus_state State;\r
- CHAR8 *BackendPath;\r
+ XENBUS_PRIVATE_DATA *Child;\r
+ enum xenbus_state State;\r
+ CHAR8 *BackendPath;\r
\r
Child = XenBusDeviceInitialized (Dev, DevicePath);\r
if (Child != NULL) {\r
* happen if a device is going away after\r
* switching to Closed.\r
*/\r
- DEBUG ((EFI_D_INFO, "XenBus: Device %a ignored. "\r
- "State %d\n", DevicePath, State));\r
+ DEBUG ((\r
+ DEBUG_INFO,\r
+ "XenBus: Device %a ignored. "\r
+ "State %d\n",\r
+ DevicePath,\r
+ State\r
+ ));\r
Status = EFI_SUCCESS;\r
goto out;\r
}\r
\r
- StatusXenStore = XenStoreRead (XST_NIL, DevicePath, "backend",\r
- NULL, (VOID **) &BackendPath);\r
+ StatusXenStore = XenStoreRead (\r
+ XST_NIL,\r
+ DevicePath,\r
+ "backend",\r
+ NULL,\r
+ (VOID **)&BackendPath\r
+ );\r
if (StatusXenStore != XENSTORE_STATUS_SUCCESS) {\r
- DEBUG ((EFI_D_ERROR, "xenbus: %a no backend path.\n", DevicePath));\r
+ DEBUG ((DEBUG_ERROR, "xenbus: %a no backend path.\n", DevicePath));\r
Status = EFI_NOT_FOUND;\r
goto out;\r
}\r
\r
- Private = AllocateCopyPool (sizeof (*Private), &gXenBusPrivateData);\r
- Private->XenBusIo.Type = AsciiStrDup (Type);\r
- Private->XenBusIo.Node = AsciiStrDup (DevicePath);\r
- Private->XenBusIo.Backend = BackendPath;\r
- Private->XenBusIo.DeviceId = AsciiStrDecimalToUintn (Id);\r
- Private->Dev = Dev;\r
-\r
- TempXenBusPath = AllocateCopyPool (sizeof (XENBUS_DEVICE_PATH),\r
- &gXenBusDevicePathTemplate);\r
+ Private = AllocateCopyPool (sizeof (*Private), &gXenBusPrivateData);\r
+ Private->XenBusIo.Type = AsciiStrDup (Type);\r
+ Private->XenBusIo.Node = AsciiStrDup (DevicePath);\r
+ Private->XenBusIo.Backend = BackendPath;\r
+ Private->XenBusIo.DeviceId = (UINT16)AsciiStrDecimalToUintn (Id);\r
+ Private->Dev = Dev;\r
+\r
+ TempXenBusPath = AllocateCopyPool (\r
+ sizeof (XENBUS_DEVICE_PATH),\r
+ &gXenBusDevicePathTemplate\r
+ );\r
if (!AsciiStrCmp (Private->XenBusIo.Type, "vbd")) {\r
TempXenBusPath->Type = XENBUS_DEVICE_PATH_TYPE_VBD;\r
}\r
+\r
TempXenBusPath->DeviceId = Private->XenBusIo.DeviceId;\r
- Private->DevicePath = (XENBUS_DEVICE_PATH *)AppendDevicePathNode (\r
- Dev->DevicePath,\r
- &TempXenBusPath->Vendor.Header);\r
+ Private->DevicePath = (XENBUS_DEVICE_PATH *)AppendDevicePathNode (\r
+ Dev->DevicePath,\r
+ &TempXenBusPath->Vendor.Header\r
+ );\r
FreePool (TempXenBusPath);\r
\r
InsertTailList (&Dev->ChildList, &Private->Link);\r
\r
Status = gBS->InstallMultipleProtocolInterfaces (\r
- &Private->Handle,\r
- &gEfiDevicePathProtocolGuid, Private->DevicePath,\r
- &gXenBusProtocolGuid, &Private->XenBusIo,\r
- NULL);\r
+ &Private->Handle,\r
+ &gEfiDevicePathProtocolGuid,\r
+ Private->DevicePath,\r
+ &gXenBusProtocolGuid,\r
+ &Private->XenBusIo,\r
+ NULL\r
+ );\r
if (EFI_ERROR (Status)) {\r
goto ErrorInstallProtocol;\r
}\r
\r
- Status = gBS->OpenProtocol (Dev->ControllerHandle,\r
- &gEfiPciIoProtocolGuid,\r
- &ChildPciIo, Dev->This->DriverBindingHandle,\r
- Private->Handle,\r
- EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER);\r
+ Status = gBS->OpenProtocol (\r
+ Dev->ControllerHandle,\r
+ &gXenIoProtocolGuid,\r
+ &ChildXenIo,\r
+ Dev->This->DriverBindingHandle,\r
+ Private->Handle,\r
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r
+ );\r
if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "open by child controller fail (%r)\n",\r
- Status));\r
+ DEBUG ((\r
+ DEBUG_ERROR,\r
+ "open by child controller fail (%r)\n",\r
+ Status\r
+ ));\r
goto ErrorOpenProtocolByChild;\r
}\r
} else {\r
- DEBUG ((EFI_D_ERROR, "XenBus: does not exist: %a\n", DevicePath));\r
+ DEBUG ((DEBUG_ERROR, "XenBus: does not exist: %a\n", DevicePath));\r
Status = EFI_NOT_FOUND;\r
}\r
\r
\r
ErrorOpenProtocolByChild:\r
gBS->UninstallMultipleProtocolInterfaces (\r
- &Private->Handle,\r
- &gEfiDevicePathProtocolGuid, Private->DevicePath,\r
- &gXenBusProtocolGuid, &Private->XenBusIo,\r
- NULL);\r
+ Private->Handle,\r
+ &gEfiDevicePathProtocolGuid,\r
+ Private->DevicePath,\r
+ &gXenBusProtocolGuid,\r
+ &Private->XenBusIo,\r
+ NULL\r
+ );\r
ErrorInstallProtocol:\r
RemoveEntryList (&Private->Link);\r
FreePool (Private->DevicePath);\r
- FreePool ((VOID *) Private->XenBusIo.Backend);\r
- FreePool ((VOID *) Private->XenBusIo.Node);\r
- FreePool ((VOID *) Private->XenBusIo.Type);\r
+ FreePool ((VOID *)Private->XenBusIo.Backend);\r
+ FreePool ((VOID *)Private->XenBusIo.Node);\r
+ FreePool ((VOID *)Private->XenBusIo.Type);\r
FreePool (Private);\r
out:\r
return Status;\r
STATIC\r
VOID\r
XenBusEnumerateDeviceType (\r
- XENBUS_DEVICE *Dev,\r
- CONST CHAR8 *Type\r
+ XENBUS_DEVICE *Dev,\r
+ CONST CHAR8 *Type\r
)\r
{\r
- CONST CHAR8 **Directory;\r
- UINTN Index;\r
- UINT32 Count;\r
- XENSTORE_STATUS Status;\r
-\r
- Status = XenStoreListDirectory (XST_NIL,\r
- "device", Type,\r
- &Count, &Directory);\r
+ CONST CHAR8 **Directory;\r
+ UINTN Index;\r
+ UINT32 Count;\r
+ XENSTORE_STATUS Status;\r
+\r
+ Status = XenStoreListDirectory (\r
+ XST_NIL,\r
+ "device",\r
+ Type,\r
+ &Count,\r
+ &Directory\r
+ );\r
if (Status != XENSTORE_STATUS_SUCCESS) {\r
return;\r
}\r
+\r
for (Index = 0; Index < Count; Index++) {\r
XenBusAddDevice (Dev, Type, Directory[Index]);\r
}\r
\r
- FreePool (Directory);\r
+ FreePool ((VOID *)Directory);\r
}\r
\r
-\r
/**\r
Enumerate the devices on a XenBus bus and install a XenBus Protocol instance.\r
\r
*/\r
XENSTORE_STATUS\r
XenBusEnumerateBus (\r
- XENBUS_DEVICE *Dev\r
+ XENBUS_DEVICE *Dev\r
)\r
{\r
- CONST CHAR8 **Types;\r
- UINTN Index;\r
- UINT32 Count;\r
- XENSTORE_STATUS Status;\r
-\r
- Status = XenStoreListDirectory (XST_NIL,\r
- "device", "",\r
- &Count, &Types);\r
+ CONST CHAR8 **Types;\r
+ UINTN Index;\r
+ UINT32 Count;\r
+ XENSTORE_STATUS Status;\r
+\r
+ Status = XenStoreListDirectory (\r
+ XST_NIL,\r
+ "device",\r
+ "",\r
+ &Count,\r
+ &Types\r
+ );\r
if (Status != XENSTORE_STATUS_SUCCESS) {\r
return Status;\r
}\r
XenBusEnumerateDeviceType (Dev, Types[Index]);\r
}\r
\r
- FreePool (Types);\r
+ FreePool ((VOID *)Types);\r
\r
return XENSTORE_STATUS_SUCCESS;\r
}\r
XENSTORE_STATUS\r
EFIAPI\r
XenBusSetState (\r
- IN XENBUS_PROTOCOL *This,\r
- IN CONST XENSTORE_TRANSACTION *Transaction,\r
- IN enum xenbus_state NewState\r
+ IN XENBUS_PROTOCOL *This,\r
+ IN CONST XENSTORE_TRANSACTION *Transaction,\r
+ IN enum xenbus_state NewState\r
)\r
{\r
- enum xenbus_state CurrentState;\r
- XENSTORE_STATUS Status;\r
- CHAR8 *Temp;\r
+ enum xenbus_state CurrentState;\r
+ XENSTORE_STATUS Status;\r
+ CHAR8 *Temp;\r
\r
- DEBUG ((EFI_D_INFO, "XenBus: Set state to %d\n", NewState));\r
+ DEBUG ((DEBUG_INFO, "XenBus: Set state to %d\n", NewState));\r
\r
Status = XenStoreRead (Transaction, This->Node, "state", NULL, (VOID **)&Temp);\r
if (Status != XENSTORE_STATUS_SUCCESS) {\r
goto Out;\r
}\r
+\r
CurrentState = AsciiStrDecimalToUintn (Temp);\r
FreePool (Temp);\r
if (CurrentState == NewState) {\r
do {\r
Status = XenStoreSPrint (Transaction, This->Node, "state", "%d", NewState);\r
} while (Status == XENSTORE_STATUS_EAGAIN);\r
+\r
if (Status != XENSTORE_STATUS_SUCCESS) {\r
- DEBUG ((EFI_D_ERROR, "XenBus: failed to write new state\n"));\r
+ DEBUG ((DEBUG_ERROR, "XenBus: failed to write new state\n"));\r
goto Out;\r
}\r
- DEBUG ((EFI_D_INFO, "XenBus: Set state to %d, done\n", NewState));\r
+\r
+ DEBUG ((DEBUG_INFO, "XenBus: Set state to %d, done\n", NewState));\r
\r
Out:\r
return Status;\r
}\r
\r
-STATIC XENBUS_PRIVATE_DATA gXenBusPrivateData = {\r
+STATIC XENBUS_PRIVATE_DATA gXenBusPrivateData = {\r
XENBUS_PRIVATE_DATA_SIGNATURE, // Signature\r
{ NULL, NULL }, // Link\r
NULL, // Handle\r
projects / mirror_edk2.git / blobdiff