Video memory mapping - HOWTO?

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  - 1
    - Develop a printer driver with DDK Hello, I would like to develop a printer driver using the DDK. I have the DDK installed and looked through, but at this time I have no idea how to start. Is there a tutorial for developing printer drivers or a good book which can help? Thx for help. AF Tag: Video memory mapping - HOWTO? Tag: 59185
  - 2
    - Ndis IM driver PnpCapabilities. Hi Thanks for any help. I have an NDIS IM driver under Pocket PC 2003. Its giving me couple of problems for Built-In Wifi medium. Sorry, I know its a painful question. Hope some one helps me. External WiFi cards work fine. When I have Built-In WiFi on, it has couple of options to turn it ON/OFF. 1. Thru a WiFi utility that comes with the device. 2. Connectivity icon at the top of the machine. When clicked it shows "Turn Wi-Fi ON/OFF". Also this option is different in some machines "Turn Flight mode ON/OFF". Code: 1. I return ndis status SUCCESS in ProtocolPnpHandler(NetEventSetPower). I maintain the power state in the driver. 2. In the PnpCapabilties Query I tried to return ndis status NOT SUPPORTED or SUPPORTED (with Wakeup capabilities set to "NdisDeviceStateUnspecified". Also I tried simply return the statuses without filling these wakeupcapability buffers. The problem is Both the WiFi options to Turn on and off the medium works as such when the device in ON. When I switch off the power and back on, One of them works and other doesn't. (Wi-Fi was on when powered down.) Example. If I set STATUS NOT SUPPORTED in pnpcapabilities, Power and flight mode works. If I set SUPPORTED, Utility and power works. The other is broken, Meaning, when the power is back its frozen or if you click to switch off the Wi-Fi, its frozen. Mostly in "NdisIMDeInitializeDeviceInstance". Could some please give me some direction here? some how the protocol stacks on top seem to hang. Is there away to disable(remove) this flight mode option thru the pnpcapabilites?. Note: PNPCapabities query will be called twice. I don't know the individual meanings but it looks we can specify different capabilities in both cases to make it work. The code is based on passthru sample that comes with CE 4.2. Thanks for any help. Ganesan Tag: Video memory mapping - HOWTO? Tag: 59178
  - 3
    - DDK Integration with VS Hello, I just installed the Server 2003 DDK. Am I incorrect in assuming that it is supposed to integrate with Visual Studio? It can't be that I must write my code with notepad and then compile and link at the command line, can it? Please forgive my ignorance, but how does one integrate the DDK with Visual Studio? Or can you point me to an article that tells how? Thank you very much, Rich Tag: Video memory mapping - HOWTO? Tag: 59171
  - 4
    - File caching Hello, We are building a device that captures data from a number of external sources and organizes them for collection. The device connects to a PC via USB. Our device presents itself to the system as a FAT mass storage device. The data is organized as a set of text files. The user would open the files to see the current settings/data or could use our logging tool which manages the periodic collection of the data if that is what they want. Everything works pretty well except that the 'files' provided by the device change without Windows knowledge of it. Since Windows appears to cache the first image of the file we are not able to see the new values without unmounting and remounting the device. This is obviously not optimal. Everything works correctly when we mount it to Linux (which does not cache the files or root directory). Is there any adjustment we can make to our device that will allow it to tell Windows not to cache anything regarding the filesystem...say, during the device mounting process? Thanks in advance, Kevin Tag: Video memory mapping - HOWTO? Tag: 59163
  - 5
    - Print preview application i need to write a print preview application that is tied into our printer driver. that is, after the user prints to our driver, we will display a preview of the print job that the user can scroll through. typical printing features will be displayed in the image for each page such as orientation, N-up, etc. development for the actual printer driver is being done as Unidrv plug-ins. from the preview application the user can decide as to whether they really want to print out to the physical printer or to cancel the job. QUESTION 1 is there a preferred point in the printing process that a preview application should be kicked off from such as from the rendering plug-in or from a custom print processor? i was looking into microsoft's sample print processor in their DDK however all of the GDI functions in Print Processors seem to just replay the EMF into the printers DC. QUESTION 2 is it possible to use these GDI functions (e.g. GdiPlayPageEMF) to play back EMF in a preview application into the applications device context? i've seen mention of the function gdiPlaySpoolStream in this newsgroup however there is no current documentation on it. it does appear in GDI32.DLL and there is documentation on it in the Windows 98 DDK. interestingly, Microsoft has stated in some newsgroup articles that this function should be used. QUESTION 3 is the gdiPlaySpoolStream function valid (i.e. will be support in later OSes, etc.) for Windows 2000/XP? can it be used to play back a page at a time (for previewing)? Microsoft reiterates in numerous articles that EMF data that ends up in the Spooler is not the same as EMF generated by an application thus you can not rely on this format for playing back using normal EMF API functions. QUESTION 4 if this is the case how are other printers displaying their Print Preview applications or are they just relying (i.e. hoping) that the format does not change. Tag: Video memory mapping - HOWTO? Tag: 59161
  - 6
    - Problem with installing stupid driver on win 2K/XP - Oney WDM 2nd Hello, I am trying to install 'stupid' driver on W2k/xp and system can't do it. I did this back then more than a year ago on win98 and it worked great. On win2k or XP f I right click on 'stupid.inf' file -> install, nothing changes. On WinXP I tried something different. That is install using the hardware wizzard. Things appear to be fine (provided I had to compile a release version of samclass.dll referenced in stupid.inf). But after rebooting (as it asks me to) driver class are shown but the an exclamation mark appears on the driver display from which the properties window says "This device is not working properly because Windows cannot load the drivers required for this device [codd 31]. Anyone have any idea to solve this? Thank you. Tag: Video memory mapping - HOWTO? Tag: 59158
  - 7
    - AVStream Physical Memory Mapping Hi!, In Stream.sys there was a PORT_CONFIGURATION structure available, that pointed out mappings from physical to virtual memory. My PCI card has a large memory range, and I want to access last 256 bytes of it (not using DMA, I just want to map this memory into virtual address - those my PCI card registers). I'm trying to use MmMapIoSpace, this supposed to look like this: PHYSICAL_ADDRESS physAddress; Memory resource address received from >>TranslatedResourceList<<. physAddress.LowPart += 0x100000L; virtualAddress = (PUCHAR) MmMapIoSpace(physAddress, 256, MmNonCached); But this does not works as I expect it to work - I could make a simple mistake - and If this is only way to implement this I'll try it, but: Is there some other way of receiving those addresses? I remember, I had similar problem with Stream.sys and I have found mapped physical onto virtual addresses in PORT_CONFIGURATION structure. That was very comfortable in Stream.sys. Pawel ps Maybe there are also function simmilar to StreamClassGetPhysicalAddress in AVStream model? Tag: Video memory mapping - HOWTO? Tag: 59152
  - 8
    - How to set up IoRequestPacket in ClientEventReceiveDatagram? Dear all: Recently I developed a TDI client driver. It is a very simple project which receives UDP packets from particular IP address and port. I tried two methods to achieve the goal. One is to allocate Irp/Mdl and TdiBuildReceiveDatagram to obtain data directly from underlying transport. It works fine! Another is to register ClientEventReceiveDatagram handler, and in the handler I also receive UDP data. However, in the case that the input parameter BytesIndicated != BytesAvailable, I wanted to build a Irp returned to underlying transport for the remainder of the TSDU. It failed! In this handler, I tried two ways to build the Irp, IoAllocateIrp and TdiBuildInternalDeviceControlIrp. As mentioned by DDK documentation, "Callers of TdiBuildInternalDeviceControlIrp must be running at IRQL = PASSIVE_LEVEL".So I pre-call the function to build Irp and in other thread, such as dispatch_IoControl. But both of them failed. OS crashed,and the message is "DRIVER_NO_LESS_OR_EQUAL_IRQL". I don't know how to set up the Irp as *IoRequestPacket for the remainder data. Any idea is appreciated, thanks in advance. Regards, Zhou Tag: Video memory mapping - HOWTO? Tag: 59151
  - 9
    - Kernel-Mode Basics Hello all, >From the link: http://www.microsoft.com/whdc/driver/tips/km-basics.mspx#EAAA under "Getting your driver to handle more than one I/O request at a time" Second paragraph: "Even if your application uses multiple threads, only one request at a time (per file handle) will get through." I am doubtful about the "per file handle" part. I tried the following thing: >From 2 threads (in an application) i opened the device (created in a simple driver) using CreateFile (and verified that the handles are different). One thread called ReadFile in a loop and the other one called WriteFile in a loop. But i noticed that driver is handling the request 1 at a time. So even though the handles are different the calls are serialized. So what does the "per file handle" mean ? ...Mani Tag: Video memory mapping - HOWTO? Tag: 59140
  - 10
    - XML JSP c++: Device Driver UI Hi i am looking at an application developed by the panel of experts and it is a dll made to show the user interface for the application. With the dll(which is made in c++) there are two more files accompnying it: one XML file and one JSP file =B7 An XML document containing the features, options and constraints, and =B7 A Java Script file for controlling the behavior of the controls, menus, bitmaps and tabs on the UI. Could any one explain me why someone like to do so. Respects, Saurabh Aggrawal Tag: Video memory mapping - HOWTO? Tag: 59139
  - 11
    - Reasons for USB Device Reinstall What are the reasons, other than the USB serial number, that would cause a USB device to be reinstalled when moved to a new USB port? We are in the process of developing a USB device and even though we are specifying a serial number, the Add New Hardware wizard pops up whenever the device is moved to a new port. We are specifying a string descriptor index in the device descriptor and the value of the serial number is the Unicode string â??0123456789â??. This is a temporary value for development purposes, when the device goes into production, each will have its own serial number. Even so, shouldnâ??t this value be sufficient to qualify as a valid USB serial number? Mike Tag: Video memory mapping - HOWTO? Tag: 59128
  - 12
    - Read data from a printer when its driver is installed on a serial Hello, I want to read data from a printer that is connected to a serial port while its driver is installed. I cannot access the serial port directly. And ReadPrinter() doesn't work. Is there a way to read the data from the printer, even if I have to modify the sample port monitor in the DDK? Or maybe some other way? I could not find the part that limits access to the serial port. Thanks. Tag: Video memory mapping - HOWTO? Tag: 59119
  - 13
    - network interfaces i wanted to support ip multicast (ipv6). when i receive the multicast list addresses from ndis, i should go and create interfaces as i would do for any primary network interfaces? Tag: Video memory mapping - HOWTO? Tag: 59118
  - 14
    - About the Filter in Audio Capture Sources Category Dear All: I have written an audio AVStream driver. It registers successfully an audio capture filter into two different categories, Audio Capture Sources and WDM Streaming Capture Devices. The capture filter, which is in WDM Streaming Capture Devices folder, is workable well for any operations. However, when I use the corresponded filter within Audio Capture Sources, there is serious problem below: I can listen the sound from this filter, but I can't stop it. When I push the "stop" button, the graphedit will be blocked!! The OnPinClose function cannot be called by directshow in my driver. Can you help me? Best Regards, H.P. Tag: Video memory mapping - HOWTO? Tag: 59117
  - 15
    - Relative open with a volume handle ? Is it possible to use the relative open with NtCreateFile and a volume handle; or is this strictly a file system concept? I want to reopen a volume handle with different access permissions. Regards, George. Tag: Video memory mapping - HOWTO? Tag: 59116
  - 16
    - Printer Icon Hi Folks, I'd like to know if it is possible, and if yes how, to change the Icon of a printer in the "printer and faxes" page. Thanks in advance, Lela Tag: Video memory mapping - HOWTO? Tag: 59112
  - 17
    - CM_Request_Device_Eject problem Win 2000 SP4 I use a service application to call CM_Request_Device_Eject on an USB stick as soon as the WM_DEVICECHANGE DBT_DEVICE_ARRIVAL was received. CM_Request_Device_Eject returns CR_ACCESS_DENIED with an empty veto buffer. GetLastError talks about an overlapped IO in progress. Trying repeatedly for 40 secs sleeping 200 msecs each time does not change anything. It works fine for a normal application. Tag: Video memory mapping - HOWTO? Tag: 59111
  - 18
    - $Directory metafile In a filemon log I see some entries like this: 189 10:15:46 myapp.exe:1616 WRITE C:\$Directory SUCCESS Offset: 0 Length: 4096 I assume that $Directory is a meta-file object used by the cache manager and similar to $ConvertToNonresident, which I also sometimes see. http://www.osronline.com/lists_archive/ntfsd/thread5467.html. But can someone confirm this. Thanks, George. Tag: Video memory mapping - HOWTO? Tag: 59100
  - 19
    - Where is the CHS-LBA translation done? Hi: It seems that the TaskFile in ATA_PASS_THROUGH_EX uses CHS representation. In the ATA/ATAPI standard actually uses LBA representation. Can somebody tell me, where the translation is done? Is it in BIOS or port driver? How the mapping is done? I guess in either case those are logical index, right? Thanks, Tag: Video memory mapping - HOWTO? Tag: 59096
  - 20
    - Device name for a disk or partition What is the format of the device name for a disk or a partition? I know that in Microsoft Cluster, one example is in the form of "Disk##Partition##" for a partition of a physical disk resource, if the drive letter is not assigned to the partition. I also saw that sometimes the volume number is included in the device name. My question is, as far as Microsoft Cluster is concerned, are there other formats (except for "Disk##Partition##") of device name can be used for a disk partition or a volume? Thanks for any help! Michelle Tag: Video memory mapping - HOWTO? Tag: 59087
  - 21
    - Device Name of a disk or partition Does anyone know the format of a device name for a disk or a partition? I know in Microsoft Cluster, one example is in the form of "Disk##Partition##" for a partition of a physical disk resource, if the partition is not assigned with a drive letter. But I also saw sometimes the volume number becomes part of a device name (not in microsoft cluster). My question is, as far as Microsoft cluster is concerned, are there any other formats (except for "Disk##Partition##" ) of device name used for a disk partition or a volume when the drive letter is not assigned? Any advice will be appreciated! Michelle Tag: Video memory mapping - HOWTO? Tag: 59086
  - 22
    - Comminicating config and control data to an RNDIS device Hi Folks, So my RNDIS device is working great. Thanks to everyone, and Bryan, for helping me out. In the end it turns out a lot of confusion was caused by a USB interface device that has some, er, odd interface requirements. (Beware the READY line on the Cypress SX2 device, it doesn't do what you think, or even what the Cypress app notes might imply. It is in no way compatible with the READY input to any processor I'm aware of.) Anyway, my particular RNDIS device is a radio that has a lot of configuration parameters. Some of the parameters are fairly large arrays of numbers and the custom parameter interface provided by RNDIS through the "Advanced" tab of the device seems inadequate for handling such a large amount of data. Plus, it would be nice to be able to re-flash the device from the host. So my question is this: Is there any provision for a host application to send and receive out of band data to and from the RNDIS attached device? I know there's OOB data that can be transported with the data packets, but that doesn't seem like what I'm looking for. But I'm looking into that further to see if there's some way to make it work. One thought I've had is to write a filter driver to insert my own commands into the EP0 stream. But it would be so much easier if something already exists, like maybe an OID that can get set/read from the host that's passed by RNDIS to the device. Anybody have any ideas? Thanks -brian Tag: Video memory mapping - HOWTO? Tag: 59081
  - 23
    - Knowing when Reset Devmode is called Hi all, I'm lauching the printting of a Word document (using ShellExecute) this creates a spl/emf file. And I wish to know (for each page) when their's a reset devmode is callin order to skip it. Thanks for your help. Tag: Video memory mapping - HOWTO? Tag: 59073
  - 24
    - silent install of unsigned driver I would like to know how I can set programmaticaly the group policy for the unsigned driver instalation? I found two ways of setting this policy to ignore the warning manually 1. in the System control panel http://www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prdh_dmt_qrxm.asp 2. in the group policy editor but when I can't do it manually how can I do it programmatical? \Manfred Tag: Video memory mapping - HOWTO? Tag: 59072
  - 25
    - multicast would ndis issue set OID_802_3_MULTICAST_LIST even if a host join as a SEND_ONLY MEMBER? thanks sophia Tag: Video memory mapping - HOWTO? Tag: 59067
- Next
  - 1
    - Originator of an IRP Hi all, is there a way to identify the originator of a kernel-mode initiated IRP. Regards, Andreas Winter. Tag: Video memory mapping - HOWTO? Tag: 59059
  - 2
    - query admin privilege from file system filter Hi, I have a file system filter. I want to block all file access except for users belong to admin group. How i can know whether a particular user has administrator privilege Regards John Tag: Video memory mapping - HOWTO? Tag: 59057
  - 3
    - Inheritance Hi, I trying to derived two different struct from the base one. typedef struct _COMMON_BASE_ { ..... }BASE_ONE, *PBASE_ONE; typedef struct _DERIVED_ONE_ : public _COMMON_BASE_ { ..... }DERIVED_ONE, *PDERIVED_ONE; typedef struct _DERIVED_TWO_ : public _COMMON_BASE_ { ..... }DERIVED_TWO, *PDERIVED_TWO; and when I run "build" i have error complaining about ":". I built the same code in VS with no problem. Could you point what I'm doing wrong ? thank you Tag: Video memory mapping - HOWTO? Tag: 59049
  - 4
    - Null driver WHQL signing Is it possible to obtain WHQL certification for a null driver? I have created an ?inf? file modeled after the form specified in the following MSDN webpage: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/install/hh/install/specinst_3d0749f4-1498-49d5-8e53-804c65f16cd1.xml.asp This ?null? driver can only install with administrative permission. I would like to obtain WHQL signing for my ?inf? file so that it will install unattended. Is this possible? What steps do I need to take to proceed? Tag: Video memory mapping - HOWTO? Tag: 59046
  - 5
    - Yet Another PNP Notification Question Do I have to do anything special in my USB driver, other than calling IoSetDeviceInterfaceState(), to receive notifications in a user-mode program? I ask because the only notification I seem to be getting is the DBT_DEVNODES_CHANGED notification when I attach or remove my device. My user-mode (MFC) app uses RegisterDeviceNotification() and specifies the guid of my driver-defined interface. Thanks for your help. Mike Tag: Video memory mapping - HOWTO? Tag: 59043
  - 6
    - Re: IRP Buffer Overflow I tried to change wMaxPacketSize and the size of the transfer data in my firmware but there is no luck. I look into the IRP packet that sends DEVICE_CONTROL to low layer. IRP information: Transfer Type : METHOD_NEITHER Required Access : ANY_ACCESS Function Code :0 There is a structure within the IRP call packet: struct DeviceIoControl ULONG OutputBufferLength = 0x28 ULONG InputBufferLength = 0x18 ULONG IoControlCode = 0x2f0003 PVOID Type3InputBuffer = 0x22e214 In the "Success" case, OutputBufferLength is non-zero. This number can be 0x10, 0x28, 0x80. In the "Buffer Overflow" case, it is 0. Is there any way I can trace what framing parameters that IRP receives? Are they in the device descriptors or in the probe/commit messages between our device and Windows XP? -Albert "Maxim S. Shatskih" <maxim@storagecraft.com> wrote in message news:e8j7gb5CFHA.4020@TK2MSFTNGP14.phx.gbl... > You have provided some wrong allocator framing properties (frame > shorter > then your hardware provides) to the upper layers, so, the upper layers > send you > too short IRPs. > > Then your driver convert the "too short" IRP to URB and sends it to the > USB > stack. USB stack receives the device data, which is longer then the IRP, > and > completes with STATUS_BUFFER_OVERFLOW. > > -- > Maxim Shatskih, Windows DDK MVP > StorageCraft Corporation > maxim@storagecraft.com > http://www.storagecraft.com > > "Albert Fu" <invalidaccount@hotmail.com> wrote in message > news:OG2rVvyCFHA.3504@TK2MSFTNGP12.phx.gbl... >> Hi, >> >> I am new to the Windows video driver and applications. >> >> I am working on a USB video device for Windows XP. >> I can use AMCAP to select my usb device with a black >> screen. I traced the data going into Windows through >> URB layer but I see a lot of buffer overflow (ntstatus code) >> messages coming from the lower layer using IRPTracker. >> It seems to me that video data is lost in the layer below IRP. >> >> I have the following questions: >> 1)Where should I start to look at the buffer overflow problem? >> 2) Where is the place that the video data is putting together as a >> video frame and then passing up to the next layer? Is it in the USB video >> class driver? >> >> Best regards, >> >> Albert >> >> > > Tag: Video memory mapping - HOWTO? Tag: 59041
  - 7
    - Print Port Monitor - garbled port name Hi all I have recent written a cluster aware Portmonitor that works fine except when adding multiple monitors the port names become garbled, either with none printerble characters or characters from the next port added. Has anyone got a solution to this problem? I have added my enumports function to this post to see if anyone can see what I am doing wrong!!!! Any pointers would be gratefully recived. Cheers J int OMEnumPorts(HANDLE monitor, LPWSTR server_name, DWORD level, LPBYTE ports, DWORD buff_size, LPDWORD buff_needed, LPDWORD no_ports) { HANDLE reg_key_handle; DWORD max_port_name_chars, rc; MONITORREG *monitorreg; MONITORINIT *monitorinit; struct ommonitor_str *ommonitor; DWORD nports; int struct_bytes; int string_bytes; LPWSTR *SourceStrings, *pSourceStrings; WCHAR *strings, reg_subkey[64]; FILETIME ftLastAccess; DWORD subkey_buff_len; PORT_INFO_1 *pPortInfo1; PORT_INFO_2 *pPortInfo2; ommonitor = monitor; monitorinit = ommonitor->monitorinit; monitorreg = ommonitor->monitorinit->pMonitorReg; *buff_needed = 0; wcscpy(reg_subkey, L""); if ((rc = monitorreg->fpOpenKey(monitorinit->hckRegistryRoot, reg_subkey, KEY_READ, &reg_key_handle, monitorinit->hSpooler)) != ERROR_SUCCESS) { fwprintf(ommonitor->lfp, L"Init %d: Failed to open registry at root\n"); fflush(ommonitor->lfp); return FALSE; } // find out how many sub-keys (ports) we've got nports = 0; max_port_name_chars = 0; if ((rc = monitorreg->fpQueryInfoKey(reg_key_handle, &nports, &max_port_name_chars, NULL, NULL, NULL, NULL, NULL, monitorinit->hSpooler)) != ERROR_SUCCESS) { monitorreg->fpCloseKey(reg_key_handle, monitorinit->hSpooler); fwprintf(ommonitor->lfp, L"OMEnumPorts: Failed to read registry info to enumerate ports\n"); fflush(ommonitor->lfp); return FALSE; } fprintf(ommonitor->lfp, "%d ports to enumerate, largest %d\n", nports, max_port_name_chars); fflush(ommonitor->lfp); // are there any ports to enumerate? if (nports == 0) { monitorreg->fpCloseKey(reg_key_handle, monitorinit->hSpooler); fwprintf(ommonitor->lfp, L"OMEnumPorts: No ports defined (key has no sub-keys)\n"); fflush(ommonitor->lfp); return TRUE; } max_port_name_chars++; // each returned structure is a struct with the associated string(s) struct_bytes = 0; string_bytes = 0; if (level == 1) { struct_bytes = sizeof (PORT_INFO_1); string_bytes = max_port_name_chars * sizeof(WCHAR); } else { if (level == 2) { struct_bytes = sizeof(PORT_INFO_2); string_bytes = max_port_name_chars * sizeof(WCHAR); string_bytes += (wcslen(MONITOR_NAME) + 1) * sizeof(WCHAR); string_bytes += (wcslen(MONITOR_PORT_NAME) + 1) * sizeof(WCHAR); } else { fprintf(ommonitor->lfp, "OMEnumPorts: Info level %ld is not supported", level); monitorreg->fpCloseKey(reg_key_handle, monitorinit->hSpooler); return FALSE; } } // get total for all the ports *buff_needed = nports * (struct_bytes + string_bytes); // has the caller allocated enough space? if (buff_size < *buff_needed || ports == NULL) { SetLastError(ERROR_INSUFFICIENT_BUFFER); monitorreg->fpCloseKey(reg_key_handle, monitorinit->hSpooler); return FALSE; } memset(ports, '\0', buff_size); // set ptr to work from end of struct(s) to end of buffer strings = (WCHAR *) (ports + buff_size - (nports * string_bytes)); // copy each port's details over to the supplied buffer // (we're using strings as a pointer) subkey_buff_len = (ports + buff_size) - (byte *) strings; *no_ports = 0; while ((rc = monitorreg->fpEnumKey(reg_key_handle, *no_ports, strings, &subkey_buff_len, &ftLastAccess, monitorinit->hSpooler)) == ERROR_SUCCESS) { // copy info over for requested info level switch (level) { case 1: pPortInfo1 = (PORT_INFO_1 *) ports; pPortInfo1[*no_ports].pName = strings; strings += (wcslen(strings) + sizeof(WCHAR)); break; case 2: pPortInfo2 = (PORT_INFO_2 *) ports; pPortInfo2[*no_ports].pPortName = strings; strings += (wcslen(strings) + sizeof(WCHAR)); wcscpy(strings, MONITOR_NAME); pPortInfo2[*no_ports].pMonitorName = strings; strings += (wcslen(strings) + sizeof(WCHAR)); wcscpy(strings, MONITOR_PORT_NAME); pPortInfo2[*no_ports].pDescription = strings; strings += (wcslen(strings) + sizeof(WCHAR)); pPortInfo2[*no_ports].fPortType = PORT_TYPE_WRITE; pPortInfo2[*no_ports].Reserved = 0; break; default: fprintf(ommonitor->lfp, "OMEnumPorts: Called with unsupported info level %ld\n", level); monitorreg->fpCloseKey(reg_key_handle, monitorinit->hSpooler); return FALSE; break; } // increment count of ports (*no_ports)++; subkey_buff_len = (ports + buff_size) - (byte *) strings; } monitorreg->fpCloseKey(reg_key_handle, monitorinit->hSpooler); return TRUE; } Tag: Video memory mapping - HOWTO? Tag: 59027
  - 8
    - capture shutdown event from lower filter driver of disk driver I am writing a driver which is a lower filter of disk class driver. My driver needs to save its state to the physical disk when the shutdown occurs. How do I capture the shutdown event in a driver at such a level? I actually tried the IoRegisterShutdownNotification() and tried to handle the IRP_MJ_SHUTDOWN. Although I can successfully registered for this event, I couldn't receive the IRP_MJ_SHUTDOWN irp. I also tried the SRB_FUNCTION_SHUTDOWN. although I can capture it I don't know what's the difference between this command and IRP_MJ_SHUTDOWN irp and whether it is save for my drive to conduct some block level write when handling SRB_FUNCTION_SHUTDOWN. thanks for any coming help Paris Tag: Video memory mapping - HOWTO? Tag: 59016
  - 9
    - Can we load a .sys file from another .sys file Hi, Can we load a ".sys" file from kernal mode driver. We have one driver with .sys extension, I am trying to write some other driver with more functionalities. In order to reduce reusability I like to load the previous .sys driver and use some of its functionalities. P.S : I know that we can load ".dl"l but I don't know how to load .sys and use its functionalities. Thanks in advance. Thanks Santhosh. Tag: Video memory mapping - HOWTO? Tag: 59014
  - 10
    - how to detect media connect/disconnect asynchronously at NDIS level I am reading data directly from a network interface using a modified NDISPROT protocol driver. When somebody pulls the network cable the ProtocolStatus routine triggers within the driver. From the user level I can actively poll the miniport using OID_GEN_MEDIA_CONNECT_STATUS, but is there a way to get notified asynchronously? If not, is checking the miniport via the OID the best way or should I implement an IoControl in NDISPROT instead? Thanks for your help! Tag: Video memory mapping - HOWTO? Tag: 59012
  - 11
    - How to Virtual Serial Port Driver in Win98SE? Hi, Can anyone suggest me on how to implement virtual serial port driver in 98SE? I heard about ccport.sys and found out in the news group that a bit buggy. Is there anyother way to implement virtual serial port in win98SE? I'm trying to WDM virtual serial port driver into 98SE. Or should I write a new Vxd virtual serial port driver to interact with WDM USB driver? thank you very much, Bandu Tag: Video memory mapping - HOWTO? Tag: 59005
  - 12
    - this is regarding rebooting system after driver install or uninstall hi all, i am very new to the windows device driver development. now i am learning how to write a driver . in this process i have created a sample driver having only these functions i.e DriverEntry , AddDevice and Unload. so with this code i am able to install the driver. now my question is every time i install driver or uninstall driver ,system is asking for reboot.so,can any one give me a solution such that i can avoid rebooting the system and still be able to install/uninstall driver. what i want is i don't want to restart my system once driver is installed or uninstalled.my OS is WIN2000 and the DDK i am using is WINDDK .so ,tell me what all changes i need to make. the code i have written is as follows: #include <wdm.h> NTSTATUS myAddDevice(IN PDRIVER_OBJECT DriverObject, IN PDEVICE_OBJECT pdo); VOID DriverUnload(IN PDRIVER_OBJECT fdo) ///Driver Entery NTSTATUS DriverEntry( IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath ) { DbgPrint ("Drv: Entered Driver Entry\n"); // Initialize Function Pointers DriverObject->DriverUnload =3D DriverUnload; DriverObject->DriverExtension->AddDevice =3D myAddDevice; return STATUS_SUCCESS; } // DriverUnload VOID DriverUnload(IN PDRIVER_OBJECT DriverObject) { DbgPrint ("Drv: Entered Driver unload\n"); } // DriverUnload NTSTATUS myAddDevice(IN PDRIVER_OBJECT DriverObject, IN PDEVICE_OBJECT DeviceObject) { NTSTATUS status; UNICODE_STRING ntDeviceName; PDEVICE_OBJECT DeviceObject1 =3D NULL; // Create a functional device object to represent the hardware we're managing. DbgPrint ("Drv: Entered Add Device\n"); RtlInitUnicodeString(&ntDeviceName, L"\\Device\\myDummy"); status =3D IoCreateDevice(DriverObject, 1, &ntDeviceName, FILE_DEVICE_UNKNOWN, 0, FALSE, &DeviceObject1 ); if(!NT_SUCCESS(status)) DbgPrint ("Drv: IoCreateDevice() fails %x \n",status); else DbgPrint ("Drv: IoCreateDevice() success\n"); return status;} and the .inf file i am using as follows: ; Driver.inf ; ; Installation file (.inf) for the Example Driver to Test device. ; ; (c) Copyright 2005 ESN Tech ; [Version] Signature=3D"$Windows NT$" Provider=3D%ESN% ClassGUID=3D{4d36e978-e325-11ce-bfc1-08002be10213} Class=3D%ESN% CatalogFile=3DDriver.cat DriverVer=3D02/08/2005 [DestinationDirs] DefaultDestDir =3D 12 ; ; Driver information ; [Manufacturer] %ESN% =3D ESN.Mfg [ESN.Mfg] %ESN.DeviceDesc0% =3D Driver, ; ; General installation section ; [Driver] ; ; File sections ; ; ; Service Installation ; [Driver.Services] AddService =3D Driver, 0x00000002 , Driver_Service_Inst, Driver_EventLog_Inst [Driver_Service_Inst] ServiceType =3D 1 ; SERVICE_KERNEL_DRIVER StartType =3D 3 ; SERVICE_DEMAND_START ErrorControl =3D 0 ; SERVICE_ERROR_IGNORE LoadOrderGroup =3D Pointer Port ServiceBinary =3D %12%\Driver.sys [Driver_EventLog_Inst] AddReg =3D Driver_EventLog_AddReg [Driver_EventLog_AddReg] HKR,,EventMessageFile,0x00020000,"%SystemRoot%\System32\IoLo=ADgMsg.dll;%Sy= stemRoot%\System32\drivers\Driver.sys" HKR,,TypesSupported,0x00010001,7 [ClassInstall32] AddReg=3DESN_addreg [ESN_addreg] HKR,,,,%ESN% HKR,,Installer32,,"Desk.Cpl,DisplayClassInstaller" HKR,,Icon,,"-1" ; ; Source file information ; [SourceDisksNames.x86] 1 =3D %DiskId1%,,,"" [SourceDisksFiles] ; Files for disk ESN Tech Installation Disk #1 (Ports) Driver.sys =3D 1,objchk_wxp_x86\i386, [Driver] CopyFil...@Driver.sys [Strings] ; ; Non-Localizable Strings ; REG_SZ =3D 0x00000000 REG_MULTI_SZ =3D 0x00010000 REG_EXPAND_SZ =3D 0x00020000 REG_BINARY =3D 0x00000001 REG_DWORD =3D 0x00010001 SERVICEROOT =3D "System\CurrentControlSet\Services" ; ; Localizable Strings ; ESN.DeviceDesc0 =3D "Example Driver to Test" DiskId1 =3D "ESN Tech Installation Disk #1 (ESN)" ESN =3D "ESN Tech" so i am expecting to provide me all the options that are available. thanks for your replay=20 regards,=20 bharati. Tag: Video memory mapping - HOWTO? Tag: 59003
  - 13
    - AVstream Clock Hi, I have written a AVStream driver which exposes a Playback Filter and acts like a renderer. This filter has a Video In pin for rendering the Video. This Pin is supposed to support a clock to return the current Stream time. I set the flag KSPIN_FLAG_IMPLEMENT_CLOCK in the KSPIN_DESCRIPTOR_EX for this Pin. And declared a KSCLOCK_DISPATCH structure and included in the KSPIN_DISPATCH structure for this pin. My KSCLOCK_DISPATCH is like this. const KSCLOCK_DISPATCH VideoInClockDispatch = { NULL, NULL, (PFNKSPINCORRELATEDTIME)VideoInCorrelatedTime, (PFNKSPINRESOLUTION)VideoInResolution }; The function VideoInCorrelatedTime is defined like this LONGLONG VideoInCorrelatedTime(IN PKSPIN Pin, OUT PLONGLONG SystemTime); Now when I render the Pin, the VideoInCorrelatedTime gets called. But the parameter Pin is coming as some invalid Pointer. And after returning from this funtion, I get a Page Fault in some unknown location ( not in driver ). Could anyone let me know what could be going wrong. What is the exact steps to support a clock on a Pin ? Thanks a Lot. Arun Tag: Video memory mapping - HOWTO? Tag: 59002
  - 14
    - 64 bit SDK/DDK Will NTDDK and 2KDDK (for kernel and user mode) still work for 64-bit? Or should I use Windows 2003 Server DDK for 64-bit? Tag: Video memory mapping - HOWTO? Tag: 58999
  - 15
    - 1394 talk/listen DMA buffer alignment requirements? Hello. Since I could not find any definitive answer in the archive or the docs, I'll ask here: for the cases of 1394 talk using equal sized packets and listen (both using packet based DMA, i.e. RESOURCE_USE_PACKET_BASED), are there any restrictions on alignment, size and/or straddling a page boundary? I found some mention of this in the DDK, but only for the case of DESCRIPTOR_HEADER_SCATTER_GATHER (which I stopped using). Are there any descriptor buffer alignment/size/page_boundary_straddling restrictions for the more general cases (i.e. no DESCRIPTOR_HEADER_SCATTER_GATHER and no RESOURCE_VARIABLE_ISOCH_PAYLOAD for talk, plain listen, both packet based)? thanks for your time, Philip Lukidis Tag: Video memory mapping - HOWTO? Tag: 58992
  - 16
    - USB Drive / Key's drive letter assignment I apologize in advance if I am posting this in the wrong newsgroup but I cannot seem to find the appropriate one for this question. I am trying to figure out a way I can create a script that will change the default drive letter a USB drive / key device grabs when it is initially inserted. We have over 1500 machines and cannot go to each one of them for each USB device and manually assign a letter. If we leave windows to it's own "devices" it will assign a letter to the USB drive that is already mapped to a network resource. Unfortunately in our environment it is not possible to change the network drive mappings. I have done some research on this and haven't come up with anything that isn't a very dirty fix to this problem. If anyone has any insight or solution it would be greatly appreciated. Thank you COHDNP... Tag: Video memory mapping - HOWTO? Tag: 58982
  - 17
    - How to remove the INF files after uninstall the passthru IM driver I have a question about the passthru IM driver installation. After uninstall the pssthru driver, the two INF files (copied and renamed to OEM*.inf under c:\windows\inf) are not removed. My question is: What's the proper way to delete these two files when uninstall? I could do a search in the c:\windows\inf directory, find the files and delete them manually, but it doesn't seem to be the proper way. Thanks for your help, Jinhai Tag: Video memory mapping - HOWTO? Tag: 58979
  - 18
    - NDIS VMINI MiniportSend() WindowsCE .NET I produced the NDIS vmini example of the platform builder using emVC++ with some modifications and installed the driver on the target PC. The VMiniMSend() function will be called from the NDIS protocol driver to send some data. Question - How can I access the IP parameters (e.g. sent port) and the actual data from the input parameters NDIS_HANDLE MiniportAdapterContext PNDIS_PACKET packet provided by the NDIS protocol driver? Tag: Video memory mapping - HOWTO? Tag: 58977
  - 19
    - printing ip addresses Hi all, i am trying to print out IP addresses from IP header structures. I know that they in format w.x.y.z were each represents one byte. But Ip_src and Ip_dst are Ulong and a subscript requires a pointer. Any help pls. abiola. Tag: Video memory mapping - HOWTO? Tag: 58975
  - 20
    - OT: Books for independent consultant? When people asking for books on driver programming, the answer would be Oney's WDM book. Can anyone here suggest some good books for freelance programmer? I found some of them on the web but don't know which one is really good for dummy. Thanks, Calvin Tag: Video memory mapping - HOWTO? Tag: 58972
  - 21
    - Linking HidD_GetPreparsedData Hello, I am writing a user-mode application that try to read the HID descriptors from HID devices. I have 2 questions : - Is it possible to read the data in a "raw mode" (i.e. I give a buffer and it is filled with the full descriptors) - I try to get the info with the HidD_* functions (HidD_GetPreparsedData etc...) so I added hid.lib to the linked libraries. But the compiler ignores it and displays : <code> error LNK2001: unresolved external symbol "unsigned char __stdcall HidD_GetPreparsedData(void *,struct _HIDP_PREPARSED_DATA * *)" </code> Thanks ! Eric. Tag: Video memory mapping - HOWTO? Tag: 58970
  - 22
    - How to create a softice like startup menu from Boot Driver? Hello How can i get user input and display strings from a Boot Driver like softice does while windows starts ? All the methods i saw in this list work for System drivers - drivers that were loaded after the windows keyboard driver and 8042 port driver were loaded. When i tried to use ZwCreateFile to access Device\KeyboardClass0, it again worked only when i loaded the driver as system and not as boot. how do the guys from numega does that ? thanks for any help. Tag: Video memory mapping - HOWTO? Tag: 58961
  - 23
    - Status monitor query Hi, I am writing a printer driver and status monitor on Windows-XP. I tried to get the printer status through IBidiSpl and IBidiRequest Bidi interfaces. The BindDevice function is failing and the error message says "Printer name is invalid", but when I call OpenPrinter API with the same printer name, it returns the printer handle successfully. If anybody have any idea why BindDevice API call fails, please let me know. Thanks, Nitin Tag: Video memory mapping - HOWTO? Tag: 58958
  - 24
    - Making a device read only We have discovered that under Win2K (and WinXP+SP1) NTFS becomes unstable if the media the volume is on is silently discarding write requests. After a short while both Win2K and WinXP will blue screen. Unfortunately we need to find a solution to this. Redesigning the hardware side would be expensive and time consuming so we are also looking into a software solution. Presumably this would require us to write a device driver that could fit into the storage driver stack at some point. The simplest way would probably be for us to monitor SCSI commands and modify the result of a Mode Sense so that it indicated that the media was write protected. None of our development team have looked at working with the DDK (we are all application developers) and from my investigations it looks like such a project would be a very big undertaking - probably as big as the hardware solution. Not a lot of code, perhaps, but a steep learning curve. So I guess my question is:Does this sound like a major software project or is there some other solution we can go for? At present just being able to turn off plug-and-play volume mounting would suffice. We only need SCSI pass through access to the write protected volume. Tag: Video memory mapping - HOWTO? Tag: 58953
  - 25
    - IRQ, device driver development. I'm starting developing a device driver, and have some questions: 1. How can I get address from which IRQ was invoked?? 2. If I know such address, how can I get binary file (process id or something which helps me to identify binary file)which was mapped for this particular address?? Best Darek Tag: Video memory mapping - HOWTO? Tag: 58951

Hello

I'm trying to map the video memory in order to display text from a boot
driver. i know the memory for color display starts at 0xA0000 but for
some reason this isn't working:

#define BUFFERSIZE 8192
PHYSICAL_ADDRESS paVideoMem;
PUCHAR pVideoMem = NULL;

paVideoMem.LowPart = 0xA0000;
pVideoMem = MmMapIoSpace(paVideoMem,BUFFERSIZE,FALSE);
*pVideoMem = 0x07690748 // should print H in the upper left corner

Any suggestions ?

Thanx.

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