intermittent problem

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- Previous
  - 1
    - regarding NDISUIO sample hi all, after compiling the ndisuio sample in the ddk when i do net start i get the following error Windows-Driver Entry Point Not Found "The \SystemRoot\System32\DRIVERS\ndisuio.sys device driver could not locate an entry point NdisGetPoolFromPacket in driver NDIS.sys" this error is in free build but when i build in checked , i get the same error as regard to cancellation of packets --?? why ?/ this entry point is not there in samples ?? are the samples not checked?? regards tarun Tag: intermittent problem Tag: 27912
  - 2
    - Shutdown Notification I found that In normal shutdown operation, Windows Me would issue SRB_SHUTDOWN_REQUEST request to my controller, but in hibernation or standby mode, there was no SRB_SHUTDOWN_REQUEST to be issued. because my controller had a cache and must be flushed before power off. So I want to write a Vxd to hook system shutdown message and flush the controller before the machine power off. But I don't know how to hook which service to be notified before power off? Any suggestion appreciated! John Harlison Tag: intermittent problem Tag: 27910
  - 3
    - Devices "Attached" to the system hey, i was trying to find out how can i display the devices that are atached to my system .i have already retrived information abt the devices that are installed but i am finding difficulty for devices that are attached. i have tried using api calls. also there are certain api calls to enumerate the devices but they require windows2000 and above...i want sumthin that is supported by all windows... SetupDiGetClassDevs, SetupDiEnumDeviceInfo and other APIs like this require windows 2000 so cant use them ...so please help! Tag: intermittent problem Tag: 27907
  - 4
    - query 802_11 OID's hi all, i need to set and query 802_11 OID's on windows 2000 and lower OS's. any ideas how to proceed. how to query the OID's , NDIS 5.0 for windows 2000 doesnt supports 802_11 OID's , although since XP supports 802_11 i was able to query. help me pls. -regards tarun Tag: intermittent problem Tag: 27891
  - 5
    - IFS driver and drive letter assignment Hello everybody, I just modified the FastFat file system driver to extend FAT32 file system to fit my own need. In my own driver, I define the system id in partition table to 0x66, and jump[0] to 0xea to avoid confusing FastFat drivers. The driver can be successfully loaded and recognized the partition that I modified from FAT32. The Disk Administrator also see that volume in use and good status, but there is no drive letter assign to that volume. How can I get a drive letter assigned to that volume? Any help will be appreciated!! Thanks in advance, James Hsiao Tag: intermittent problem Tag: 27888
  - 6
    - How to set WEP Keys programmatically Please help: How can I programmatically set WEP Keys on a NIC. I use the NDISUIO driver and OID_802_11_ADD_WEP. I got no error but the system will not establish a connection. stWEP.Length = sizeof(NDIS_802_11_WEP); stWEP.KeyIndex = 1; stWEP.KeyLength = 5; sprintf((CHAR*)stWEP.KeyMaterial,"54321"); Thank you all and hpoefully you can help me. Armin Tag: intermittent problem Tag: 27877
  - 7
    - Compuware driver-studio Hi All Is there any support of 1394 virtual devices in the driver studio for Win XP and, more interesting, what about 61883 and AV/C devices. Thank you. Tag: intermittent problem Tag: 27876
  - 8
    - Stream devices identification` Hello, All. I am working on DirectShow application, which works with stream devices. Application have a list of these devices to provide to user possibility to choose device he(she) wants. The probem is the follow: the device can be connected to the system when application is executed and I need to add new device into the list. I have hooked WM_DEVICECHANGE message and then enumerate all devices I need via ICreateDevEnum and IEnumMoniker interfaces. But I need to know which devices are already in the my list and which of them are new. The questions are: 1.There is any documented way to understand that two IBaseFilter interfaces points to the same device? 2. Do I can use string returned by the IMoniker::GetDisplayName method for this purpose? -- Andrey Tag: intermittent problem Tag: 27856
  - 9
    - Reading data from USBPRINT stalls the pipe Hi, I have managed to get a user-mode app talking directly to an instance of Microsoft's USBPRINT driver. I can write to the printer and get the Centronics emulation status just fine. My problem is that, when I want to read data from the printer, I must specify the exact number of bytes the printer will send in the ReadFile() call. If I specify more bytes, the call will hang - but this is normal. If I specify less bytes, this is what happens: -> The bytes requested *are* read, the ReadFile() call fails indicating zero bytes read, GetLastError() returns 23 and the URB returns with status 0xc000000c (USBD_STATUS_BUFFER_OVERRUN); -> Further ReadFile() calls fail with zero bytes read, no data is read, GetLastError() returns 23 and the URB returns with status 0xc0000030 (USBD_STATUS_ENDPOINT_HALTED). It seems that USBPRINT is stalling the IN endpoint when I request less bytes than those available at the printer. This happens under Win2000 and Win98 and I have tested two printers from different vendors. Question: Is there any way of clearing the stalled pipe or of reading an unknown amount of data through USBPRINT? Thank you, Aspas PS: I am using SnoopyPro to see the URBs exchanged. Tag: intermittent problem Tag: 27854
  - 10
    - Communication wire with test system We are debugging our drivers using a dual-system configuration (one for development and one for testing) connected using a serial cable. Our development environment is Windows 2000 Professional, but the target systems are Windows 2000 Profession/Server/Advanced Server, Windows XP Home/Professional and Windows 2003. We are always looking for ways to improve our productivity during the testing phase. One bottleneck that has been identified is the use of the serial cable. It has been suggested that a 1394 (firewire) port would enable faster transfers and debugging, but there are some suggestions that this is not available with Windows 2000. Will installing a 1394 card on both the develoment and test system permit faster debugging? Can it be used with Windows 2000? If not, what prevents it from being used? If I cannot use 1394, is there another mechanism that would be faster than the serial cable? -Ken Tag: intermittent problem Tag: 27839
  - 11
    - Driver Installation in Windows98 Hi all, My requirement is to have console application in Windows 98 and Win ME that copies .INF files and the driver file in the respetive folder.This assures that Add Hardware Wizard doesn't pop up when the user plug in the USB cable .I have similar application in windows 2k and Windows XP which uses SetupCopyOEMINf API to meet the requirement.But this API is not supported in Win 98 and Win ME. Plz lemme know is there any corresponding API in Windows 98 for SetupCopyOEMINF API ?If not, how can we solve this problem. Your help will be very much appreciated. Thanx in advance for the help. Regards ananth Tag: intermittent problem Tag: 27837
  - 12
    - SetupDiSetDeviceRegistryProperty failure Hi, The following (XP DDK devcon sample) series of API calls ends with failure: DeviceInfoSet = SetupDiCreateDeviceInfoList(Net Class GUID, 0) SetupDiCreateDeviceInfo(DeviceInfoSet, (char *)class_name, &class_guid, NULL, 0, DICD_GENERATE_ID, &DeviceInfoData) SetupDiSetDeviceRegistryProperty(DeviceInfoSet, &DeviceInfoData, SPDRP_HARDWAREID, (LPBYTE)hw_id, strlen(hw_id) + 2) The last call fails and GetLastError indicates : The parameter is invalid What can possibly fail this series of API calls , which definitely worked for on most occasions. Thanks, Gadi. Tag: intermittent problem Tag: 27835
  - 13
    - can i query the vendoe 802_11 driver hi all, i need to get and set some OID's (802_11) , i have Orinoco Sillver CARD installed on windows 2000 machine, i need to query certain OID's 802_11 and set also any ideas how ?? regards tarun Tag: intermittent problem Tag: 27834
  - 14
    - Directshow support for MPEG-4 streaming Hello all, In DDK there are KSDATARANGE structures for MPEG1, MPEG2 and even MPEG2TS . But there is no structure which supports MPEG4. I built a filter with a output pin with KS_DATRANGE_VIDEO structure with Major type : KSDATAFORMAT_TYPE_STREAM and subtype as MP42. But when i rendered the pin its saying no inteermidiate filters not available. There are directshow filters like Mpeg4 Decode DMO, Mpeg43 Decode DMO , Mpeg4s Decode DMO and Microsoft MPEG-4 Video compressor. I want to know the major and subtypes supported by these filters. So that i can configure my filter pin for that format. Even i tried with custom MPEG-4 filtes from Elecard, DivX and Dicas. Still i am not able build the graph. So i have following questions: 1. Is there any support for MPEG4 streaming in directshow. 2. Which data range structure should be used for MPEG4 SL streaming. 3. What should be the major and subtype of the pin. 4. Is there anything extra should be mentioned in the data range structure so that directshow should understand and add mpeg4 related intermidiated filters. Any inputs and pointers on above queries are highly appriciated. Waiting for ur reply. - Regards, Rafi Maniyar Tag: intermittent problem Tag: 27832
  - 15
    - my first article hello everyone Tag: intermittent problem Tag: 27831
  - 16
    - IM Driver Crash at system startup I am writing a IM driver which put received packets into a queue and indicates it up. Most of the time it runs fine but it seems that when I have the driver installed and reboot it, it crashes when at NdisMIndicateReceivePacket when I am trying to indicate a UDP packet. I havent got much clue on this, I have looked at NDIS.com and it says something about the first buffer have to describe MAC Header and LookaheadData. How can I find these? Tag: intermittent problem Tag: 27821
  - 17
    - scsi timeout at boot Microsoft Knowledge Base Article 139357 describes how some scsiport drivers can produce a timeout message when the windows OS is booting. It describes that the timeout is caused by a MODE_SENSE command being issued by the scsidisk.sys driver with a timeout value on the I/O being 0. It describes the problem as being only applied to windows NT 3.5 (Workstation/Server). My problem is that the driver I'm currently working with is exhibiting the exact same problems as described by this article but on the windows NT/2000 environments. Is it just that this article isn't up to date and my timeouts are symptomatic of something else. The timeouts only occur during the OS boot and the driver and the hardware function normally outside of this. Can anyone offer some insight? Thanks Tag: intermittent problem Tag: 27815
  - 18
    - GPD for printers Can I modify the GPD for a printer without resetting the computer? Can a simple GPD directive such as '*MaxCopies 1' cause a printer to hang? I am asking cause I added that simple directive to our LaserJet printer GPD file and we are experiencing slight difficulties. Tag: intermittent problem Tag: 27810
  - 19
    - How the miniport works?it's so important for me. i just touch the miniport program. I am wonder how can i get data from adapter driver using my miniport driver? who can tell me? it's so important for me. Tag: intermittent problem Tag: 27809
  - 20
    - 1394 virtual device I have a medical device which receives Async commands from an App running on Windows2000. Windows 2000 App used modified 1394diag driver and Microsoft Windows stack. Now I want to move to Windows XP and Microft XP Windows 1394 stack and driver similar to 1394diag. Do I need 1394 virtual device. (like 1394vdev.sys). When I have actual 1394 device connected, why should I again create 1394 virtual device. Should I make any changes in INF and configRom of device. For one 1394 device to talk with XP, do I need two drivers, virtual and actual driver. Can someone make me understand this? Where can I find info for this? Why should installing driver in XP be different from 2000 for pnp devices like 1394. Tag: intermittent problem Tag: 27801
  - 21
    - user mode plug and play Hi, How do i Post Plug and Play events to Drivers. I know of an undocumented api zwControlPlugPlay in kernel32.dll, but the parameters are mysterious Thanks, Raz Tag: intermittent problem Tag: 27796
  - 22
    - WriteFile(...) to USB HID: why does this call hang my client application ? Hi, I'm experimenting with some home-made HID-class USB device. All is well with the ReadFile calls to read report. The queuing and blocking mechanism is clear to me. But I'm stumbling with some issues when sending reports with WriteFile. I never get any error results ( WriteFile() returns a non-zero value ), but sometimes the call just doesn't return, and requires me to kill my application. Any idea why this would be happening ? Reducing the frequency of calls to WriteFile seemed to help a bit, but did not solve the issue. My calls to WriteFile always follow a successful call to ReadFile, and I do not see what else I could/need to do to avoid overflowing the output queue. So what is going wrong ? Any idea about something I could be trying ? Thanks in advice for any hint or directions, Ivan NB: I'm running Win2k SP 3 -- Ivan Vecerina, Dr. med. <> http://www.post1.com/~ivec Tag: intermittent problem Tag: 27795
  - 23
    - Shared Memory between User app and Driver Hi I want to create a shared memory interface between a user application and a NDIS miniport driver. The purpose of this interface is that the driver continuosly writes some information to the shared memory which accesses this information periodically. Could you please suggest the best way of doing this ? Thanks in advance Ankush Tag: intermittent problem Tag: 27788
  - 24
    - 1394 async broadcast I want to send a 1394 Async broadcast packet (nodeId = 0xFFFF) using Micorsoft Windows stack. But didnt find the way to do it. DDK for REQUEST_ASYNC_WRITE says " The driver only must fill in the IA_Destination_Offset member of u.AsyncWrite.DestinationAddress; the bus driver will fill in the IA_Destination_ID member ". Since I have no say on nodeId, I dont know how to a Async block request as broadcast packet of nodeId 0xFFFF. Do I need to send to all nodes, one node at a time and "feel" like I broacasted. Any help appreciated. Tag: intermittent problem Tag: 27787
  - 25
    - symbolic link and IoGetDeviceObjectPointer Hello all, I have a problem with drivers calling each other. There are 3 drivers. Two of those drivers need to ask driver nr 1 some things. Nr 1 does the following in his AddDevice method: RtlInitUnicodeString(&devname, L"\\Device\\NAME"); RtlInitUnicodeString(&win32DeviceName, L"\\DosDevices\\NAME"); IoCreateSymbolicLink( &win32DeviceName, &devname); Nr 2 and 3 then try: RtlInitUnicodeString(&devName, L"\\Device\\NAME"); status=IoGetDeviceObjectPointer(&devName, FILE_ALL_ACCESS, &fileObj, &devObj); The problem is that nr 2 does this first (but definitely after the addentry method of nr 1), but always gets c0000e as error code (device not found). Nr 3 first has to load some files and asks stuff to nr 1 later (and he IS successfull). In other words: there seems to be a delay between the IoCreateSymbolicLink and the time when the driver can actually attempt to get a handle to it. (Note: I'm a newbie, so forgive me if I say stupid things :-) Is this true? Can I alter the loading order, so nr 2 is called after nr 3 (I don't think so, both are PnP drivers and I think I read you can't specify a load order)? thx in advance for all help, crimson13 Tag: intermittent problem Tag: 27783
- Next
  - 1
    - WHERE TO FIND THE DDK? PRINTERS DDK? I need a copy of the DDK, particularly for printers. It provides stuff like code for localspl.dll. MS does not provide this on the web-site. Anyone know where I could find this? Even better, any chance I could get it emailed? My driver development for the printer is pretty advanced (have written a port monitor), but I cannot progress without the DDK. Tag: intermittent problem Tag: 27779
  - 2
    - Wakeup problem with PCMCIA card I am writing a WDM driver for a simple PCMCIA card and testing it under Windows 2000/SP3. The driver is based on a framework created with Walter Oney's WDM Driver Wizard. In particular, the Power handling functions are more or less unchanged. My problem is, that when the system wakes up from standby mode, Windows thinks that the hardware has changed and starts the New-Hardware-Wizard. The driver appears to complete the processing of the power IRPs, but then receives a IRP_MN_SURPRISE_REMOVAL request, following which the driver is unloaded. The New-Hardware-Wizard indicates that it has detected a device named MTD-0002. I have been advised that this probably means that Wihdows is unable to read the Card Information Structure (CIS) on the PCMCIA card, but I can see no reason why this would be the case. I have set D3Latency parameter to 1000 (100ms) which should be more than enough. On inserting the card into the slot, Windows never has any difficulty reading the CIS, so I don't see why there should be a problem when it is powered up on leaving standby mode. Does anybody have any idea what could be causing this effect? I would be grateful for any help. Thanks in advance Phil (By the way, this is newly developed hardware and the error could be in the CIS. It is not a big problem for us to reprogam this memory.) Tag: intermittent problem Tag: 27775
  - 3
    - how to display bitmap on screen constantly? Hi, I'm trying to find a way to display a bitmap on the top- right portion of the screen at all times, even when an application using directx in full-screen mode is in use. Can this be accomplished using display filter drivers? I was thinking of writing a driver that would simply map the bitmap data to the screen along with the rest of the screen data. So, could a filter driver be installed "below" GDI and Directx that would map the bitmap regarless of wich interface(gdi or directx) is in use? And if so, since GDI and directx are different components that each communicates directly with the video adapter (as I understand it), will the driver have to be device specific? Anyway, if u guys know a way to accomplish this bitmap mapping whitout using drivers i'll be more than happy to hear it. Tag: intermittent problem Tag: 27768
  - 4
    - WMI support for Stream minidriver Hello, All. Does anybody knows how to implement WMI support in the StreamMinidriver for KernelStreaming. -- Andrey Tag: intermittent problem Tag: 27766
  - 5
    - PCI Configuration Space - BAR0 Allocation Hi, Who is responsible to provide IO Address at BAR0 in PCI Configuration Space : Operating System or Device Driver ? If OS provides that, can device driver change this ? or does driver needs to change this to allocate new IO range under conflicts ? Thanks & Regards, rsec07 Tag: intermittent problem Tag: 27756
  - 6
    - How to install NT4 driver by setup program I can use inf file to install a "SCSIAdapter" driver on NT4. However, I want to implement setup program(InstallShield) to install driver. Except copy *.Inf and *.sys to \\WINNT\\INF and \\WINNT\\SYSTEM32\\DRIVERS, what application I need to execute to install driver successfully? Thanks Axel Tag: intermittent problem Tag: 27749
  - 7
    - Enable/Diable Device Driver from Non-Admin account In our Video Conferencing systems, we have multiple propritary drivers running on the system and also our system works with different third party Conferencing Devices. Obviously differnt drivers for variety of HW devices are running on the same system. Our recent version of HW is getting problems with one of HW that is colloborated with our unit. Then I played with different drivers and finally I found a way to make it work. Disable the HW unit driver before reboot and enable after the system booted completely using Windows ddk api from one of test app. But the Microsoft documentation is expalaining that these APIs for Enable/Disable, SetupDiChangeState, is only for Administrator group. Is there any way to disable / Enable the Drivers when we login as a Non-Admin also. Can somebody to help to solve this problem. If I am following the wrong way, Can you update me the proper way to solve this issue. Thank You Murthy Tag: intermittent problem Tag: 27743
  - 8
    - sub-optimal performance through CardBus controllers on Windows Problem Statement - The Windows XP and 2000 driver in the OS for CardBus controllers are not programmed for optimal throughput or performance. Observations - We have a Network adapter that runs roughly the same speeds as a Fast Ethernet NIC. - We can sustain data rates in the Tx and Rx directions (simultaneously) of roughly 80Mbps through the NIC and Ndis driver across PCI. - When running through a Cardbus controller programmed by Windows (with the Windows provided Cardbus controller drivers) we see Rx rates of approximately 78 Mbps. Tx rates top out at roughly 38 Mbps. - We have noticed that the Cardbus bridge is NOT programmed for optimal performance, even though the PCI configuration space shows settings that the CardBus controller driver seems to be ignoring. For example, burst read and write were set in the PCI config space for the card (MBURSTDN and MBURSTUP) but the CardBus controller is NOT programmed to burst by the Windows OS CardBus controller driver. - When we manually change the cardbus controller to enable bursting, the Tx performance improves dramatically. Questions. 1. Can the Network card do anything to influence the Windows Cardbus controller driver to enable Burst read and write ? 2. Are there other settings the Network card can use to ensure the Cardbus controller is set for optimal performance? 3. The Fast Ethernet NICs must have run into this same problem already. We see that that off the shelf Fast Ethernet NICs also are not running anywhere near optimal performance / throughput. We see simliar rates for Tx and Rx on with Fast Ethernet Cardbus NICs. We can program the CardBus controller maually to dramtically improve the performance but we still do not see what we would expect (90+ Mbps in both directions). Below are some detailed notes about our investigation and characterization of the problem. We are doing performance characterization on our Cardbus NIC, which has a PHY throughput roughly equivalent to a Fast Ethernet NIC (approximately 100 Mbps simultaneously for Tx and Rx). But, we are seeing some performance issues, while transferring data across the Cardbus interface. We have not been able to get the Cardbus interface, on any laptop to transmit data at rates higher than 37 Mbps and receive data across the Cardbus interface at rates higher than 78 Mbps. Also, there are some laptops where the upstream througput is as low as 3 Mbps and the downstream throughput only 7 Mbps. The throughput seems to vary with the part no. of the Cardbus Controller, being used in the laptop. Following is a list of observations that we made while running the tests, with each laptop: 1. Sony Vaio Laptop running Win2k with RICOH 5c475 II Cardbus controller: This laptop showed a throughput of 37 Mbps upstream and 78 Mbps downstream, when we transfered data at roughly 100 Mbps at the PHY layer. 2. Dell Latitude laptop running WinXP with the TI PCI-1420 Cardbus controller: This laptop showed a throughput of 37 Mbps both upstream and downstream, when we transfered data at roughly 100 Mbps at the PHY layer. 3. IBM Thinkpad running WinXP with the TI PCI-1510 Cardbus controller: This laptop showed a throughput of just 3 Mbps upstream and 7 Mbps downstream, when we transfered data at roughly 100 Mbps at the PHY layer. When we monitored the Cardbus transactions on a logic analyzer, we saw that although the controller was allowing DMA bursts, it was issueing a lot of retries, to the device. 4. If we replace the NIC with an out of the box Fast Ethernet NIC, we see strikingly similar numbers in all cases. All the above setups are running the standard Cardbus controller drivers which came with the Operating System and we are running standardout of the box NDIS Miniport drivers, to drive our NIC. So, the question is, how can we get the Cardbus controller drivers on each platform and OS, to configure the controller correctly, to allow maximum throughput across the Cardbus interface ? Programming the TI Cardbus controller manually Since, the datasheets for the RICOH controllers, are not available online, we looked at the Cardbus configuration registers, of only the TI controllers. Following was the default configuration on both the TI controllers on the WinXP laptops: 1. The MBURSTDN and MBURSTUP bits (bits 15 and 14) were set in the System Control Register (PCI Config space offset 80h), for bursts, both for Read and Write transactions. 2. The POSTEN bit (bit 10) in the Bridge Control Register was set, enabling write posting, which is recommended for good performance while bursting. 3. The Latency Timer settings are different on the controllers: TI Controller Latency Timer Cardbus Latency (Secondary Bus Latency) PCI-1420 20 20 PCI-1510 40 B0 4. The KEEPCLK bit (bit 1) in the System Control Register was cleared, which implies that usage of the CLKRUN protocol was enabled, although we implement the CCLKRUN# pin as a NO-CONNECT on our device, since it was decided not to support this protocol. I tried running the tests, after toggling this bit, so that the Cardbus clock is always kept active and is not throttled using the CLKRUN# protocol, but that did not improve the performance, in any way. 5. The PCIRETRY and CBRETRY bits (bits 7 and 6), in the Retry Status Register, are set, indicating that PCI and Cardbus retry timeout is enabled. Following was the configuration of our device: MIN_GNT = 18 MAX_LAT = FF Latency Timer = F8 While running WinXP, we got a similar low throughput of 19 Mbps. Subsequently, looking at the Cardbus Controller registers and we found that again the MRBURSTUP bit was not set by the XP CB controller driver. So, after setting this bit, manually, I was able to acheive an upstream throughput of 51 Mbps. This strongly suggests that the Microsoft WinXP Cardbus controller drivers are not optimized setting the Controller hardware for optimum performance basedon the parameters of the CardBus cards plugged into the bridge. We are wondering if other NIC vendors would have run into the same issues on Windows and got some fixes from Microsoft. Following, we were able to achieve a new performance high on our Cardbus NIC using the Dell Latitude laptop with the TI PCI-1420 Cardbus controller. We were able to acheive 46 Mbps upstream and 79 Mbps downstream, while trying to transmit packets at roughly 100 Mbps. So, we are almost at par with the Cardbus Fast Ethernet performance, seen on the various laptops. The differences this time are: 1. This NIC is programmed with a new EEPROM image which programs the PCI MIN_GNT, MAX_LAT and the latency timer to values optimized for the maximum throughput. 2. Before we started this test, we made sure that the PCI latency timer values on all the intermediate PCI-PCI bridges and PCI-Cardbus controller, was set to the max possible value of 0xF8 (since I found that the latency timer values on some of the intermediate bridges was set to zero, by default, which might have inhibited the Cardbus performance). --- Larry Cawley Airgo Networks, Inc. 636 458 1462 <mailto:LarryCawley@AirgoNetworks.com> Tag: intermittent problem Tag: 27741
  - 9
    - Register NDIS driver to set device name Hi I have access to NDIS miniport driver code - I want to communicate to it from a user app. I was attempting to register the device using NDISMRegister Device so that I could give it a device name and be able to access it. But that crashes my system. Can NDISMRegisterDevice be used with NDISMRegisterMiniport without crashing the driver? Can I retrieve device names without having to register the device ? I want to create a shared memory interface with the driver using an IOCTL and am a novice to device driver programming - hence the questions. Thanks in advance Brinda Tag: intermittent problem Tag: 27732
  - 10
    - CM_PROB_DRIVER_FAILED_PRIOR_UNLOAD I run into this error only under HCT (WHQL). But the interesting point is that 1) I handle IRP_MN_REMOVE_DEVICE successfully. 2) When my Unload gets called, !drvobj shows that the driver object owns no devices. But even after my Unload routine exits, !drivers shows that the module is still loaded. What could keep a module from unloading after return from driver unload? regards, m navab Tag: intermittent problem Tag: 27728
  - 11
    - How to differ the different network in protocol driver(802.3,802.11) when i made the coding for the wireless lan in protocol driver. i found, no matter how i improve my coding or not, the information of medium i got is still 802.3, instead of 802.11. i know this why. but i should base the medium to use relative OID. So, who can tell me how to differ these two netowrk (802.11,802.3)in protocol driver Tag: intermittent problem Tag: 27726
  - 12
    - IRQL_NOT_LESS_OR_EQUAL Why could this code crash with "IRQL_NOT..."? NTSTATUS USBBase::StartDataUrb(IN UCHAR data[4]) { NTSTATUS status = STATUS_SUCCESS; // Initialize the URB we use for writing the pipe PURB urb = this->DataUrbMidi01; USBD_PIPE_HANDLE Handle = this->MidiOut01; ULONG urbflags = USBD_SHORT_TRANSFER_OK; ULONG size = 4; PUCHAR Data = data; if (this->FirstStart) { Data = ACTIVATION; this->FirstStart = FALSE; } UsbBuildInterruptOrBulkTransferRequest(urb, sizeof (_URB_BULK_OR_INTERRUPT_TRANSFER), Handle, Data, NULL, size, urbflags, NULL); PIRP Irp = this->DataIrpMidi01; PIO_STACK_LOCATION stack = IoGetNextIrpStackLocation(Irp); stack->MajorFunction = IRP_MJ_INTERNAL_DEVICE_CONTROL; stack->Parameters.DeviceIoControl.IoControlCode = IOCTL_INTERNAL_USB_SUBMIT_URB; stack->Parameters.Others.Argument1 = (PVOID) urb; Irp->Cancel = FALSE; ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL); status = IoCallDriver(lowerDO, Irp); !!! At this point!!! return status; } Because of debug messages (code is deleted here) I know the moment of system crash. It has to be somewhere in or slightly after IoCallDriver(...). The routine is called at passive level. I'm thankfull for any suggestions. Tag: intermittent problem Tag: 27723
  - 13
    - How to write device installer? Hi, I'm in trouble. I have to write an installer for a modem, but have no idea how to do that. I've tried to execute *.inf files from driver's directory, but this didn't work. Could you please advise me how to do that or point me to some tutorials? Should I use some SetupDi methods? Thanks, K. Tag: intermittent problem Tag: 27722
  - 14
    - About NUmega KStreamSocket HI: Everyone, A Problem about KStreamSocket make me very bored. It is So: When i create a socket via KStreamSocket. and connect to peer is ok,then send is ok. and receive is ok once,But once receive is finished. unfortunately,the socket is disconnect automatically. So, I have to connect it to peer again. Why,What is problem? Can you help me? Jerry Tag: intermittent problem Tag: 27713
  - 15
    - TextOut Hello , I have a strange problem which I have encountered in my code ,The DrvTextOut Method of my driver fails when tested with speedy , on further debugging I found out that it fails in the pcfallocatecachedFont method and at these lines // swap a cached font (using LRU method) pFCNode = ppdev->pFC->pUsedList.pPrev; //Change status into uncached pFCNode->pfo->pvConsumer = NULL; //clear glyph tag pjFCTag = (PBYTE) pFCNode->pjTag; for (i = 0; i < FC_MAX_GLYPH_ID; i += 4) { *(PULONG) pjFCTag = 0; pjFCTag += 4; } //for Now the problems are as follows: 1.The driver doesn't break at the same position all the time sometimes it breaks in the for loop some times just after the font is swapped .it also doesn't break for a specific font id it just breaks randomly. 2.The same driver is working fine with speedy on a Pentium 4 machine with 256 mb ram whereas the orignal machine is intel celeron with 196 mb ram. Now my doubts are : 1.Can this be because of the CPU speed , I think it might be a swapping problem because it is giving me a page fault in non paged area.if it is how can I make changes in the code to make it compatiable for the celeron platform. 2.The replacement algorithm I have used is incorrect,I should not use LRU . Please advise , as I am not clear if I am on right tracks.for further refrece I am attaching the pcfAllocatecachedfont method. Thanks & Regards, Nitin Kapoor PFCNODE pcfAllocateCachedFont( PDEV* ppdev) { ULONG i; PFCNODE pFCNode; PBYTE pjFCTag; pFCNode = ppdev->pFC->pFreeList; if (pFCNode == NULL) { if (ppdev->pFC->pDiscardList != NULL) { ppdev->pFC->pFreeList = ppdev->pFC->pDiscardList; ppdev->pFC->pDiscardList = NULL; pFCNode = ppdev->pFC->pFreeList; while (pFCNode) { //set the state into FC_FREE pFCNode->iState = FC_FREE; //clear glyph tag pjFCTag = (PBYTE) pFCNode->pjTag; for (i = 0; i < FC_MAX_GLYPH_ID; i += 4) { *(PULONG) pjFCTag = 0; pjFCTag += 4; } //for pFCNode = pFCNode->pNext; } //while // wait engine idle vWaitEngineIdle( ppdev ); // take the 1st free node pFCNode = ppdev->pFC->pFreeList; ppdev->pFC->pFreeList = pFCNode->pNext; pFCNode->iState = FC_USED; } else { // swap a cached font (using LRU method) pFCNode = ppdev->pFC->pUsedList.pPrev; //Change status into uncached pFCNode->pfo->pvConsumer = NULL; //clear glyph tag pjFCTag = (PBYTE) pFCNode->pjTag; for (i = 0; i < FC_MAX_GLYPH_ID; i += 4) { *(PULONG) pjFCTag = 0; pjFCTag += 4; } //for //delete from used list vFCDeleteNode(pFCNode); DISPDBG((0,"FONT CACHE AFTER DELETE NODE.\n",pFCNode->iUniq)); // wait engine idle vWaitEngineIdle( ppdev ); DISPDBG((0,"FONT CACHE After WaitEngine Idle.\n",pFCNode->iUniq)); } //if-else } else { pFCNode->iState = FC_USED; ppdev->pFC->pFreeList = pFCNode->pNext; } //if // keep double links for insert & delete vFCInsertNode(&ppdev->pFC->pUsedList, pFCNode); return(pFCNode); } //pcfAllocateCachedFont( Tag: intermittent problem Tag: 27710
  - 16
    - why it doesnt work?????? i have got OID_802_11_STATISTICS's value and i can display correctly, i put the follow function in the OnTimer event. however, all of the value(transmitCount and receiveCount) i got is zero.(my thought is to display the number of transmit and received packages looks like the network status) void OnTimeer(XXXXX) { IoctlNdisQueryTest(lpAdapterName) } DWORD IoctlNdisQueryTest(LPCTSTR lpAdapterName) { NDIS_802_11_STATISTICS OidData; DWORD nResult, ReturnedCount = 0; ZeroMemory( &OidData, sizeof(OidData)); OidData.Length = sizeof(OidData); nResult = Test_IoctlNdisQueryGlobalStats (lpAdapterName,OID_802_11_STATISTICS,OidData,sizeof (OidData),&ReturnedCount); if( nResult != ERROR_SUCCESS ) sprintf(sLabel,"%s","The driver unsupported"); else sprintf(sLabel,"%I64d,%I64d", OidData.TransmittedFragmentCount.QuadPart, OidData.ReceivedFragmentCount.QuadPart); Tag: intermittent problem Tag: 27708
  - 17
    - kernel driver refuses to run in safe boot I'm trying to write a very little SERVICE_KERNEL_DRIVER driver, which is supposed to run during safe boot. My current driver is as good as empty, I can successfully start & stop it during a normal (non safe) session. Also it boots up in a normal (non safe) session when being installed as SERVICE_SYSTEM_START. Everything looks just fine. But during safe boot XP suddenly is not able to load the driver. It tries to load it (I've added it to the safe boot registry keys), but it fails. The XP event log sais, XP was not able to load my driver, but it doesn't tell me why. If I check out the properties page of my driver (via device manager) after a safe boot I can see that it is not running. If I then try to manually start it, the dialog freezes for about 5 seconds, but the driver still does not run. What do I have to change to make my driver run successfully in a safe boot? Thanks! P.S: I tried to add power, pnp and wmi handlers, but that didn't help, either. Maybe I implemented them incorrectly, though. ============================================================ #include <ntddk.h> void UnloadDriver(PDRIVER_OBJECT DriverObject) { IoDeleteDevice(DriverObject->DeviceObject); } NTSTATUS DummyIrpHandler(PDEVICE_OBJECT DeviceObject, PIRP Irp) { Irp->IoStatus.Status = STATUS_SUCCESS; IoCompleteRequest(Irp, IO_NO_INCREMENT); return STATUS_SUCCESS; } NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath) { PDEVICE_OBJECT devObj; UNICODE_STRING name; RtlInitUnicodeString(&name, L"\\Device\\MtsUpd"); IoCreateDevice(DriverObject, 4, &name, FILE_DEVICE_UNKNOWN, 0, FALSE, &devObj); DriverObject->DriverUnload = UnloadDriver; DriverObject->MajorFunction[IRP_MJ_CREATE] = DummyIrpHandler; DriverObject->MajorFunction[IRP_MJ_CLOSE] = DummyIrpHandler; return STATUS_SUCCESS; } Tag: intermittent problem Tag: 27707
  - 18
    - scsi miniport HwStartIo() IRQL if no interrupts in a scsi miniport driver for a virtual HW(obviously no HW interrupts), if i set the PORT_CONFIGURATION_INFORMATION -> BusInterruptVector = 0; for findadapter and HW_INITIALIZATION_DATA -> HwScsiInterrupt = NULL can i be gauranteed that my HwStartIo() and/or HwTimer()will be called at DISPATCH_LEVEL(atleast)/PASSIVE_LEVEL? because i cant think of what DIRQL can SCSIPORT assume before calling into me? KeSynchronizeExecution() requires interrupt# question 2 ------------- since HwStartIo() can be called at DIRQL what syncronization mechanisms are available inside this routine to share data with a PASSIVE_LEVEL thread? even spinlocks are useless > DISPATCH_LEVEL. i am prepared to use any NTDDK only kernel functions thx alex Tag: intermittent problem Tag: 27705
  - 19
    - WinDDK Fails to Build Examples I've installed the winddk 3790, read the release notes and getting started guide, and attempted to build the examples but I've had no luck-- the build is silently failing. Executing 'build -cZ' from the command prompt spawned by "Windows 2000 Checked Build Environment" rapidly scrolls through all the example directories (much too fast to be building) and exits without errors. If I look into an example (i.e. src\general\portio) at the build log file, I see entries like the following: > Compiling c:\winddk\3790\src\general\portio\sys directory ************* > 'nmake.exe /c BUILDMSG=Stop. -i NTTEST= UMTEST= NOLINK=1 NOPASS0=1 386=1' > Bad command or file name Any ideas? The log output is identical for every example driver in the DDK. I'd expect building examples to "just work" but I'm not familiar enough with this environment to even begin to guess what is wrong. It should be mentioned that I had this exact error mode using a previous Win2K DDK, so I elected to grab the latest 2003 Server DDK in the hopes that the integrated compiler, etc, would make the effort easier. Tag: intermittent problem Tag: 27702
  - 20
    - About ClearCommError function everyone: Hi I am writting a driver about a virtual device. While application calls ClearCommError, The Driver must be able to reply a response. Now I dont know when driver receives the ioctl code,what is the SystemBuffer of IRP? and More, if app calls other API(WaitCommEvent,SetCommMask,etc.) What is Their SystemBuffer? Thank for your answer. Jerry 1st.July.2003 Tag: intermittent problem Tag: 27697
  - 21
    - Get the long form of the specified path. Hi Is it possible to get the long path name of a specified path from the short form of the path? In win32 there are functions named 'GetLongPathName' or 'GetFullPathName' to achieve it, but what to to in a driver? thanks Yang Liu Tag: intermittent problem Tag: 27693
  - 22
    - Where is wrong? the follows is my coding, who can tell me where is wrong, and how to correct it? DWORD myinfo::IoctlNdisQueryTest(LPCTSTR lpAdapterName) { UCHAR OidData[4096]; DWORD nResult, ReturnedCount = 0; nResult = Test_IoctlNdisQueryGlobalStats (lpAdapterName,OID_802_11_STATISTICS,OidData,sizeof (OidData),&ReturnedCount); if( nResult != ERROR_SUCCESS ) sprintf(sLabel,"%s","The driver unsupported"); else /* ****************************************** */ sprintf(sLabel,"%d,%d",OidData[1],OidData [10]);// wrong message /* ******************************************* */ m_temp.SetWindowText(sLabel); nResult = Test_IoctlNdisQueryGlobalStats (lpAdapterName,OID_802_11_SSID,OidData,sizeof (OidData),&ReturnedCount); if( nResult != ERROR_SUCCESS ) sprintf(sLabel,"%s","The driver unsupported"); else /* ***************************************** */ sprintf(sLabel,"%d-%s",OidData[],OidData [1]);//wrong message /* ****************************************** */ m_temp.SetWindowText(sLabel); return( nResult ); }DWORD myinfo::Test_IoctlNdisQueryGlobalStats( LPCTSTR lpAdapterName, ULONG OidCode, PVOID InformationBuffer, UINT InformationBufferLength, PULONG pBytesWritten) { CHAR LinkName[512]; CHAR szMACFileName[512]; BOOLEAN bCreatedDevice = FALSE; DWORD ErrorNumber, nResult = ERROR_SUCCESS; HANDLE hMAC; *pBytesWritten = 0; strcpy( LinkName, "\\Device\\" ); strcat( LinkName, lpAdapterName ); strcpy(szMACFileName, DEVICE_PREFIX); strcat(szMACFileName, lpAdapterName); hMAC = CreateFile (szMACFileName,0,FILE_SHARE_READ,NULL,OPEN_EXISTING,0,INVAL ID_HANDLE_VALUE); if (hMAC != INVALID_HANDLE_VALUE) if(!DeviceIoControl (hMAC,IOCTL_NDIS_QUERY_GLOBAL_STATS,&OidCode, sizeof (OidCode),InformationBuffer,InformationBufferLength, pBytesWritten,NULL)) printf(" DeviceIoControl returned an error = %d\n",nResult = GetLastError()); else printf(" CreateFile returned an error = % d\n",nResult = GetLastError()); if (bCreatedDevice) if (!DefineDosDevice(DDD_RAW_TARGET_PATH | DDD_REMOVE_DEFINITION |DDD_EXACT_MATCH_ON_REMOVE,lpAdapterName,LinkName)) { ErrorNumber = GetLastError(); printf("DefineDosDevice returned an error creating the device = %d\n", ErrorNumber); return( ErrorNumber ); } return( nResult ); } Tag: intermittent problem Tag: 27692
  - 23
    - PCMCIA card client driver samples? I am starting write a 16 bit PC Card(Data Acquisition card) driver for Windows 2000/XP and wondering if there is any code example. Can anyone here point it out? Thanks Tag: intermittent problem Tag: 27686
  - 24
    - ScatterGatherList Fails Hi, I am using GetScatterGatherList for doing Bus Master DMA. It fails with status = "STATUS_BUFFER_TOO_SMALL". I have called it 9 times, but only two times it passes. What is the reason for this status code ? Which buffer is too small ? Number of MapRegisters allocated is 8. The buffer size to be transferred is 5120, it spans to a maximum of 3 pages. The following is the function call Status = DeviceExtension->AdapterObject->DmaOperations->GetScatterGatherList( DeviceExtension->AdapterObject, DeviceObject, mdl, // IRP->MdlAddress DeviceExtension->CurrentVaddr, // MmGetMdlVirtualAddress(mdl) transferSize, // 8192 or 12298 (2 * PAGE_SIZE or 3 *PAGE_SIZE) (PDRIVER_LIST_CONTROL) AdapterListControl, DeviceExtension, bOperationType); // bOperation = TRUE for a write, FALSE for a read. Thanks Kumar Tag: intermittent problem Tag: 27685
  - 25
    - Sample code for NDIS 802.11 driver? Hi, Is there any sample code for NDIS 802.11 driver? I installed windows server 2003 DDK. There is no 802.11 driver sample. Thanks for your input. Lin Tag: intermittent problem Tag: 27677

hi,
i have p4 845gl chipset system with 128 mb ddr ram with
40gb seagate barracuda hard disk .
i had installed windows nt 4.0 workstation.
some times it is giving crash dump error and sometimes it
is giving like this error (0x5,0x0,0x00000000) what could
be the problem .

if you can give me the exact problem solving technic i
will be thankful to you.

Very thanks.

zubair.

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