uhcd.c
资源名称:SMDK2440.rar [点击查看]
上传用户:qiulin1960
上传日期:2013-10-16
资源大小:2844k
文件大小:19k
源码类别:
Windows CE
开发平台:
Windows_Unix
- /*++
- THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
- ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
- PARTICULAR PURPOSE.
- Copyright (c) 1995-2000 Microsoft Corporation. All rights reserved.
- Module Name:
- uhcd.c
- Abstract:
- Platform dependant part of the USB Universal Host Controller Driver (UHCD).
- Notes:
- --*/
- #include <windows.h>
- #include <nkintr.h>
- #include <oalintr.h>
- #include <ceddk.h>
- #include <uhcdddsi.h>
- // Registry key and value names
- #define UHCI_DRIVER_KEY TEXT("Drivers\BuiltIn\UHCI")
- #define USE_EXISTING_VALUE_NAME TEXT("UseExistingSettings")
- #define IRQ_VALUE_NAME TEXT("Irq")
- #define IOBASE_VALUE_NAME TEXT("MemBase")
- // Amount of memory to use for HCD buffer
- static const DWORD gcTotalAvailablePhysicalMemory = 65536; // 64K
- static const DWORD gcHighPriorityPhysicalMemory = 0x4000; // 16K
- typedef struct _SUhcdPdd
- {
- LPVOID lpvMemoryObject;
- LPVOID lpvUhcdMddObject;
- } SUhcdPdd;
- #define UnusedParameter(x) x = x
- /* UhcdPdd_DllMain
- *
- * DLL Entry point.
- *
- * Return Value:
- */
- extern BOOL UhcdPdd_DllMain(HANDLE hinstDLL, DWORD dwReason, LPVOID lpvReserved)
- {
- UnusedParameter(hinstDLL);
- UnusedParameter(dwReason);
- UnusedParameter(lpvReserved);
- return TRUE;
- }
- /* GetRegistryConfig
- *
- * Function to get the IRQ and I/O port range from the registry.
- * Note: Will need to be changed to support multiple instances.
- *
- * Return Value:
- * TRUE for success, FALSE for error
- */
- static BOOL
- GetRegistryConfig(
- DWORD * lpdwUseExistingSettings, // OUT- Receives value that indicates whether to
- // just use the resources assigned by the BIOS.
- DWORD * lpdwIrq, // OUT- Receives IRQ value
- DWORD * lpdwIoBase) // OUT- Receives I/O base
- {
- HKEY hKey;
- DWORD dwData;
- DWORD dwSize;
- DWORD dwType;
- BOOL fRet=FALSE;
- DWORD dwRet;
- dwRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE,UHCI_DRIVER_KEY,0,0,&hKey);
- if (dwRet != ERROR_SUCCESS) {
- DEBUGMSG(ZONE_ERROR,(TEXT("!UHCD:GetRegistryConfig RegOpenKeyEx(%s) failed %drn"),
- UHCI_DRIVER_KEY, dwRet));
- return FALSE;
- }
- dwSize = sizeof(dwData);
- dwRet = RegQueryValueEx(hKey,USE_EXISTING_VALUE_NAME,0,&dwType,(PUCHAR)&dwData,&dwSize);
- if (dwRet != ERROR_SUCCESS) {
- DEBUGMSG(ZONE_ERROR, (TEXT("!UHCD:GetRegistryConfig RegQueryValueEx(%s) failed %drn"),
- USE_EXISTING_VALUE_NAME, dwRet));
- goto GetRegistryConfig_exit;
- }
- *lpdwUseExistingSettings = dwData;
- dwSize = sizeof(dwData);
- dwRet = RegQueryValueEx(hKey,IRQ_VALUE_NAME,0,&dwType,(PUCHAR)&dwData,&dwSize);
- if (dwRet != ERROR_SUCCESS) {
- DEBUGMSG(ZONE_ERROR, (TEXT("!UHCD:GetRegistryConfig RegQueryValueEx(%s) failed %drn"),
- IRQ_VALUE_NAME, dwRet));
- goto GetRegistryConfig_exit;
- }
- *lpdwIrq = dwData;
- dwSize = sizeof(dwData);
- dwRet = RegQueryValueEx(hKey,IOBASE_VALUE_NAME,0,&dwType,(PUCHAR)&dwData,&dwSize);
- if (dwRet != ERROR_SUCCESS) {
- DEBUGMSG(ZONE_ERROR,(TEXT("!UHCD:GetRegistryConfig RegQueryValueEx(%s) failed %drn"),
- IOBASE_VALUE_NAME, dwRet));
- goto GetRegistryConfig_exit;
- }
- *lpdwIoBase = dwData;
- fRet = TRUE;
- GetRegistryConfig_exit:
- RegCloseKey(hKey);
- return fRet;
- } // GetRegistryConfig
- /* SetRegistryConfig
- *
- * Function to set the IRQ and I/O port range in the registry.
- * Note: Will need to be changed to support multiple instances.
- *
- * Return Value:
- * TRUE for success, FALSE for error
- */
- static BOOL
- SetRegistryConfig(
- DWORD dwIrq, // IN - IRQ value
- DWORD dwIoBase) // IN - I/O base
- {
- HKEY hKey;
- BOOL fRet=FALSE;
- DWORD dwRet;
- dwRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE,UHCI_DRIVER_KEY,0,0,&hKey);
- if (dwRet != ERROR_SUCCESS) {
- DEBUGMSG(ZONE_ERROR,(TEXT("!UHCD:SetRegistryConfig RegOpenKeyEx(%s) failed %drn"),
- UHCI_DRIVER_KEY, dwRet));
- return FALSE;
- }
- dwRet = RegSetValueEx(hKey,IRQ_VALUE_NAME,0,REG_DWORD,(PUCHAR)&dwIrq,sizeof(DWORD));
- if (dwRet != ERROR_SUCCESS) {
- DEBUGMSG(ZONE_ERROR, (TEXT("!UHCD:SetRegistryConfig RegQueryValueEx(%s) failed %drn"),
- IRQ_VALUE_NAME, dwRet));
- goto SetRegistryConfig_exit;
- }
- dwRet = RegSetValueEx(hKey,IOBASE_VALUE_NAME,0,REG_DWORD,(PUCHAR)&dwIoBase,sizeof(DWORD));
- if (dwRet != ERROR_SUCCESS) {
- DEBUGMSG(ZONE_ERROR,(TEXT("!UHCD:SetRegistryConfig RegQueryValueEx(%s) failed %drn"),
- IOBASE_VALUE_NAME, dwRet));
- goto SetRegistryConfig_exit;
- }
- fRet = TRUE;
- SetRegistryConfig_exit:
- RegCloseKey(hKey);
- return fRet;
- } // SetRegistryConfig
- /* ConfigureUHCICard
- *
- * Configure UHCI controller I/O base and IRQ based on settings read from registry.
- * This should really call routines which access the IRQ routing and memory base through
- * the PCI BIOS and reconfigure the card. Since we currently don't have the routines
- * to do this, use the following algorithm:
- * -- If fUseExisting flag is set, read the values from the PCI config registers on the
- * card, and update pioPortBase and pIrq.
- * -- If fUseExisting is not set, verify that the passed in values of pioPortBase and
- * pIrq match, and return FALSE if they do not. (change - don't fail if mem base
- * doesn't match, since this is determined by the PCI config mechanism, it will not
- * conflict with other cards.)
- *
- * Return Value
- * Return TRUE if successful, FALSE if card could not be detected, or if configuration
- * does not match what was specified in the registry, and fUseExistingSettings is not set.
- */
- BOOL
- ConfigureUHCICard(
- BOOL fUseExistingSettings,
- PUCHAR *pioPortBase, // IN - contains physical address of register base
- // OUT- contains virtual address of register base
- ULONG *pIrq) // IN - contains IRQ value
- // OUT- (if fUseExistingSettings) contains actual IRQ value
- {
- PCI_SLOT_NUMBER slotNumber;
- PCI_COMMON_CONFIG pciConfig;
- int bus, device, function;
- int length;
- BOOL bFoundIt = FALSE;
- // when detecting a PIIX4, these are the values which appear
- #define UHCD_VENDOR_ID_INTEL ((USHORT)0x8086)
- #define UHCD_DEVICE_ID_PIIX4 ((USHORT)0x7112)
- // PIIX4 is strange in that the port base address
- // is stored in BaseAddresses[ 4 ]. In fact, the
- // BaseAddresses[ 0-3 ] are all 0, for some reason.
- #define UHCD_PIIX4_ADDRESS_REG 4
- for (bus = 0; bus < PCI_MAX_BUS; bus++) {
- for (device = 0; device < PCI_MAX_DEVICES; device++) {
- slotNumber.u.bits.DeviceNumber = device;
- for (function = 0; function < PCI_MAX_FUNCTION; function++) {
- slotNumber.u.bits.FunctionNumber = function;
- length = HalGetBusData(PCIConfiguration, bus, slotNumber.u.AsULONG,
- &pciConfig, sizeof(pciConfig) -
- sizeof(pciConfig.DeviceSpecific));
- if (length == 0 || pciConfig.VendorID == 0xFFFF)
- break;
- // the only UHCI controller I've tested so far is the
- // PIIX4. The rest of this code will need to be altered
- // to support other controllers.
- //
- // This DEBUGCHK says:
- // "halt if we find an Intel USB controller that is not a PIIX4"
- DEBUGCHK( !(pciConfig.BaseClass == PCI_CLASS_SERIAL_BUS_CTLR &&
- pciConfig.SubClass == PCI_SUBCLASS_SB_USB &&
- pciConfig.VendorID == UHCD_VENDOR_ID_INTEL ) ||
- pciConfig.DeviceID == UHCD_DEVICE_ID_PIIX4 );
- if (pciConfig.BaseClass == PCI_CLASS_SERIAL_BUS_CTLR &&
- pciConfig.SubClass == PCI_SUBCLASS_SB_USB &&
- pciConfig.VendorID == UHCD_VENDOR_ID_INTEL &&
- pciConfig.DeviceID == UHCD_DEVICE_ID_PIIX4 ) {
- RETAILMSG(1,(TEXT("UHCD: Found PCI USB UHCI controller, VendorId: %04X, DeviceId: %04Xrn"),
- pciConfig.VendorID, pciConfig.DeviceID));
- bFoundIt = TRUE;
- DEBUGMSG( ZONE_INIT,
- (TEXT("UHCD: PCI config: Irq = 0x%X, Port Base = 0x%Xrn"),
- pciConfig.u.type0.InterruptLine, pciConfig.u.type0.BaseAddresses[ UHCD_PIIX4_ADDRESS_REG ]) );
- // Update current config
- if (fUseExistingSettings) {
- *pIrq = pciConfig.u.type0.InterruptLine;
- *pioPortBase = (PUCHAR)pciConfig.u.type0.BaseAddresses[ UHCD_PIIX4_ADDRESS_REG ];
- // Save new values in registry
- SetRegistryConfig(*pIrq, (DWORD)*pioPortBase);
- }
- else if ((pciConfig.u.type0.InterruptLine != (UCHAR) *pIrq) ||
- (pciConfig.u.type0.BaseAddresses[ UHCD_PIIX4_ADDRESS_REG ] != (DWORD)*pioPortBase)) {
- RETAILMSG(1,(TEXT("!UHCD: Configuration different from registry: IRQ %u, PortBase: 0x%X (reg: %u, 0x%X)rn"),
- pciConfig.u.type0.InterruptLine,pciConfig.u.type0.BaseAddresses[ UHCD_PIIX4_ADDRESS_REG ],
- (UCHAR)*pIrq,(DWORD)*pioPortBase));
- // If IRQ isn't what we expect, fail init (otherwise might conflict with ISA
- // devices). Shouldn't have a problem with conflicting memory addresses, so
- // don't fail if that doesn't match.
- if (pciConfig.u.type0.InterruptLine != (UCHAR) *pIrq)
- bFoundIt = FALSE;
- }
- break;
- }
- if (function == 0 && !(pciConfig.HeaderType & 0x80))
- break;
- }
- if (bFoundIt || length == 0)
- break;
- }
- if (bFoundIt || (length == 0 && device == 0))
- break;
- }
- if (!bFoundIt) {
- DEBUGMSG(ZONE_ERROR, (TEXT("UHCD: Error, can't find USB Controllerrn")));
- return FALSE;
- }
- DEBUGMSG(ZONE_INIT, (TEXT("UHCD: Revision Stepping value = 0x%02Xrn"), pciConfig.RevisionID));
- // "PCI System Architecture, 3rd Ed" by Shanley/Anderson,
- // chapter 17, page 349 (I/O Base Address Register)
- // states that for I/O mapping, the address register
- // will end in 01. Page 348 shows that for memory mapping,
- // the register ends in 0.
- #if 1
- // so far, the only UHCI controller I've tested is the PIIX4, which
- // is I/O mapped.
- DEBUGCHK( pciConfig.VendorID == UHCD_VENDOR_ID_INTEL &&
- pciConfig.DeviceID == UHCD_DEVICE_ID_PIIX4 );
- // check for I/O mapping (see comment above)
- DEBUGCHK( (((DWORD)*pioPortBase) & ~PCI_ADDRESS_IO_ADDRESS_MASK) == PCI_ADDRESS_IO_SPACE );
- *pioPortBase = (PUCHAR)( ((DWORD)*pioPortBase) & PCI_ADDRESS_IO_ADDRESS_MASK );
- DEBUGMSG(ZONE_INIT, (TEXT("UHCD: Using I/O Mapping. ioPortBase = 0x%Xn"), *pioPortBase));
- #else
- if ( ((DWORD)*pioPortBase) & 0x1 ) {
- DEBUGCHK( (((DWORD)*pioPortBase) & (1 << 1) ) == 0 );
- *pioPortBase = (PUCHAR)(((DWORD)*pioPortBase) ^ 0x1);
- DEBUGMSG(ZONE_INIT, (TEXT("UHCD: Using I/O Mapping. ioPortBase = 0x%Xn"), *pioPortBase));
- } else {
- // Memory mapped
- ULONG portBase;
- PHYSICAL_ADDRESS ioPhysicalBase;
- ULONG inIoSpace = 0;
- ULONG portRange = 0x70; // cDefaultUhcdPortRange;
- // So far, we haven't seen any memory mapped UHCI controllers
- DEBUGCHK( FALSE );
- // The bottom bit is 0 for memory-mapped
- DEBUGCHK( !(pciConfig.u.type0.BaseAddresses[ UHCD_PIIX4_ADDRESS_REG ] & 0x1) );
- portBase = pciConfig.u.type0.BaseAddresses[ UHCD_PIIX4_ADDRESS_REG ];
- ioPhysicalBase.LowPart = portBase;
- if (HalTranslateBusAddress(PCIBus, bus, ioPhysicalBase, &inIoSpace,
- &ioPhysicalBase)) {
- if (!inIoSpace) {
- if ((*pioPortBase = (PUCHAR)MmMapIoSpace(ioPhysicalBase,
- portRange, FALSE)) == NULL) {
- // We may as well not continue
- DEBUGMSG(ZONE_ERROR, (TEXT("UHCD: Error mapping I/O Ports.rn")));
- return FALSE;
- }
- } else {
- *pioPortBase = (PUCHAR)ioPhysicalBase.LowPart;
- }
- } else {
- DEBUGMSG(ZONE_ERROR, (TEXT("UHCD: Error translating I/O Ports.rn")));
- return FALSE;
- }
- DEBUGMSG(ZONE_INIT,
- (TEXT("UHCD: ioPhysicalBase 0x%X, IoSpace 0x%Xrn"),
- ioPhysicalBase.LowPart, inIoSpace));
- DEBUGMSG(ZONE_INIT,
- (TEXT("UHCD: ioPortBase 0x%X, portBase 0x%Xrn"),
- *pioPortBase, portBase));
- }
- #endif
- return TRUE;
- }
- /* InitializeUHCI
- *
- * Configure and initialize UHCI card
- *
- * Return Value:
- * Return TRUE if card could be located and configured, otherwise FALSE
- */
- static BOOL
- InitializeUHCI(
- SUhcdPdd * pPddObject, // IN - Pointer to PDD structure
- LPCWSTR szDriverRegKey) // IN - Pointer to active registry key string
- {
- DWORD dwUseExistingSettings;
- PUCHAR ioPortBase = NULL;
- DWORD dwSysIntr, dwIRQ;
- BOOL fResult = FALSE;
- LPVOID pobMem = NULL;
- LPVOID pobUhcd = NULL;
- if (!GetRegistryConfig(&dwUseExistingSettings, &dwIRQ, (DWORD *)&ioPortBase)) {
- RETAILMSG(1,(TEXT("!UHCD: Error reading registry settingsrn")));
- return FALSE;
- }
- DEBUGMSG(ZONE_INIT,(TEXT("UHCD: Read config from registry: Use existing: %u, IRQ: %u, I/O base: %Xrn"),
- dwUseExistingSettings,dwIRQ,ioPortBase));
- fResult = ConfigureUHCICard(!!dwUseExistingSettings,&ioPortBase, &dwIRQ);
- if(fResult)
- {
- dwSysIntr = MapIrq2SysIntr(dwIRQ);
- DEBUGMSG(ZONE_INIT,(TEXT("UHCD: MapIrq2SysIntr(%u): %urn"),dwIRQ,dwSysIntr));
- // The PDD can supply a buffer of contiguous physical memory here, or can let the
- // MDD try to allocate the memory from system RAM. In our case, let the MDD do it.
- pobMem = UhcdMdd_CreateMemoryObject(gcTotalAvailablePhysicalMemory,
- gcHighPriorityPhysicalMemory, NULL,NULL);
- if(pobMem)
- {
- pobUhcd = UhcdMdd_CreateUhcdObject(pPddObject, pobMem,
- szDriverRegKey, ioPortBase, dwSysIntr);
- fResult = pobUhcd ? TRUE : FALSE;
- }
- else
- fResult = FALSE;
- if(!fResult)
- {
- if(pobUhcd)
- UhcdMdd_DestroyUhcdObject(pobUhcd);
- if(pobMem)
- UhcdMdd_DestroyMemoryObject(pobMem);
- pobUhcd = NULL;
- pobMem = NULL;
- }
- }
- pPddObject->lpvMemoryObject = pobMem;
- pPddObject->lpvUhcdMddObject = pobUhcd;
- return fResult;
- }
- /* UhcdPdd_Init
- *
- * PDD Entry point - called at system init to detect and configure UHCI card.
- *
- * Return Value:
- * Return pointer to PDD specific data structure, or NULL if error.
- */
- extern DWORD
- UhcdPdd_Init(
- DWORD dwContext) // IN - Pointer to context value. For device.exe, this is a string
- // indicating our active registry key.
- {
- SUhcdPdd * pPddObject = malloc(sizeof(SUhcdPdd));
- BOOL fRet = FALSE;
- fRet = InitializeUHCI(pPddObject, (LPCWSTR)dwContext);
- if(!fRet)
- {
- free(pPddObject);
- pPddObject = NULL;
- }
- return (DWORD)pPddObject;
- }
- /* UhcdPdd_CheckConfigPower
- *
- * Check power required by specific device configuration and return whether it
- * can be supported on this platform. For CEPC, this is trivial, just limit to
- * the 500mA requirement of USB. For battery powered devices, this could be
- * more sophisticated, taking into account current battery status or other info.
- *
- * Return Value:
- * Return TRUE if configuration can be supported, FALSE if not.
- */
- extern BOOL UhcdPdd_CheckConfigPower(
- UCHAR bPort, // IN - Port number
- DWORD dwCfgPower, // IN - Power required by configuration
- DWORD dwTotalPower) // IN - Total power currently in use on port
- {
- return ((dwCfgPower + dwTotalPower) > 500) ? FALSE : TRUE;
- }
- extern void UhcdPdd_PowerUp(DWORD hDeviceContext)
- {
- SUhcdPdd * pPddObject = (SUhcdPdd *)hDeviceContext;
- UhcdMdd_PowerUp(pPddObject->lpvUhcdMddObject);
- return;
- }
- extern void UhcdPdd_PowerDown(DWORD hDeviceContext)
- {
- SUhcdPdd * pPddObject = (SUhcdPdd *)hDeviceContext;
- UhcdMdd_PowerDown(pPddObject->lpvUhcdMddObject);
- return;
- }
- extern BOOL UhcdPdd_Deinit(DWORD hDeviceContext)
- {
- SUhcdPdd * pPddObject = (SUhcdPdd *)hDeviceContext;
- if(pPddObject->lpvUhcdMddObject)
- UhcdMdd_DestroyUhcdObject(pPddObject->lpvUhcdMddObject);
- if(pPddObject->lpvMemoryObject)
- UhcdMdd_DestroyMemoryObject(pPddObject->lpvMemoryObject);
- return TRUE;
- }
- extern DWORD UhcdPdd_Open(DWORD hDeviceContext, DWORD AccessCode,
- DWORD ShareMode)
- {
- UnusedParameter(hDeviceContext);
- UnusedParameter(AccessCode);
- UnusedParameter(ShareMode);
- return 1; // we can be opened, but only once!
- }
- extern BOOL UhcdPdd_Close(DWORD hOpenContext)
- {
- UnusedParameter(hOpenContext);
- return TRUE;
- }
- extern DWORD UhcdPdd_Read(DWORD hOpenContext, LPVOID pBuffer, DWORD Count)
- {
- UnusedParameter(hOpenContext);
- UnusedParameter(pBuffer);
- UnusedParameter(Count);
- return (DWORD)-1; // an error occured
- }
- extern DWORD UhcdPdd_Write(DWORD hOpenContext, LPCVOID pSourceBytes,
- DWORD NumberOfBytes)
- {
- UnusedParameter(hOpenContext);
- UnusedParameter(pSourceBytes);
- UnusedParameter(NumberOfBytes);
- return (DWORD)-1;
- }
- extern DWORD UhcdPdd_Seek(DWORD hOpenContext, LONG Amount, DWORD Type)
- {
- UnusedParameter(hOpenContext);
- UnusedParameter(Amount);
- UnusedParameter(Type);
- return (DWORD)-1;
- }
- extern BOOL UhcdPdd_IOControl(DWORD hOpenContext, DWORD dwCode, PBYTE pBufIn,
- DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActualOut)
- {
- UnusedParameter(hOpenContext);
- UnusedParameter(dwCode);
- UnusedParameter(pBufIn);
- UnusedParameter(dwLenIn);
- UnusedParameter(pBufOut);
- UnusedParameter(dwLenOut);
- UnusedParameter(pdwActualOut);
- return FALSE;
- }
- // Manage WinCE suspend/resume events
- // This gets called by the MDD's IST when it detects a power resume.
- // The CEPC does not have power suspend/resume functionality so
- // there's nothing we need to do beyond merely providing the entry point.
- extern void UhcdPdd_InitiatePowerUp (void)
- {
- return;
- }