PCI64 DMA (master) read vs. write speed

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 - Shared printer driver and DrvConvertDevmode I'm having a problem with my monolithic, user mode printer driver. The problem is: The driver is installed on windows 2000 server or windows 2003 server and shared. An XP client connects to it. When the user on the client attempts to change printer properties, the changes are not saved. I think it is caused by a problem I am having handling DrvConvertDevmode's CMD_DRIVER_DEFAULT. In the driver, I attempt to save the devmode by doing a SetPrinter with a PRINTER_INFO_2 structure. As soon as I call it, Windows calls my driver's DrvConvertDevmode, with *pcbNeeded=0 and pdmOut=NULL. I fill in *pcbNeeded with the size of my devmode and return FALSE. Windows immediately calls me back, with *pcbNeeded=0 and pdmOut=NULL again. I expect that windows should call me back the second time with *pcbNeeded=<size of my devmode> and pdmOut=<pointer to a devmode-sized piece of memory>. Is there something that I am misunderstanding? Thanks, ScottR -- Scott Robins ScottRobins@nospam.usa.xerox.com.nospam Tag: PCI64 DMA (master) read vs. write speed Tag: 37374
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 - BDA beginner question Hi! I'm new to driver development and started playing around a little bit to earn some experience in these things. My preferred first "target" is a rather complex digital tv card (DVB-C) with a lot of integrated circuits based on the well known SAA7146 chip. I haven't any problems in controlling and accessing the components on the board. The only problem is that I'm unsure how to encapsulate everything in a BDA-driver for Windows XP. I have the Windows XP SP1 ddk and I've also studied the Mauitune (philtune) example but it's too heavily based on specific hardware so I gave it up and started with a very interesting DVB-T project found at sourceforge (http://sourceforge.net/projects/bdadev) My only remaining question is: Where to find information about which properties or functions to export in order to make my DVBC-Tuner connect to the Microsoft DVBC Network-Provider? Someone else in this group said that it is extremely important to expose (only) the correct properties and pin-descriptions so that the Network Provider successfully identificates my driver as a "compatible" one. Reading the bda-headers didn't help (me)... Can somebody give me some hints on where to start looking? Greetings, Christoph Bisping Tag: PCI64 DMA (master) read vs. write speed Tag: 37367
 - 3
 - Work around StreamClassFilterReenumerateStreams I am working on a driver for a USB2 camera with the following hardware characteristics: 1) The field size is 774x245 2) The camera can be programmed to output either interlaced (frame is 774x490) or progressive (frame is 774x245). 3) Also, the field height is programmable 1->245, the x start and xsize are also programmable. Most importantly, the image is always vertically centered at the bottom of the field (note there is no ystart parameter). 4) The frame period and integration period are also completely programmable with only the following constraint: the pixel rate must be less than 25Mhz, and the bit rate must be less than the USB2 ISO maximum (192Mb/s). Notice that the frame rate is completely dependent on the current format size. The driver characteristics thus far: 1) Based on USBCAMD 2) Has custom property set to permit setting all the above parameters. 3) Has a ksproxy plugin to permit setting all the above parameters in a COM compatible fashion. 4) Has a custom property page to permit setting all the above parameters from graphedit/amcap. 5) Working with a fixed 640x480 format. Now I want to implement all the nifty programmability. My problem is: how do I represent this with regard to the StreamFormatsArray of the HW_STREAM_INFORMATION? My original plan had been to write into the KS_DATARANGE_XXX structure the currently programmed width/height/frame rate options with the KS_VIDEO_STREAM_CONFIG_CAPS set such that there was no other format option besides the one format. The user would use either the custom property page or the COM interface to set, for example, a new height. I would then issue a request to renegotiate the format for the pin connection and dynamically create a new KS_DATARANGE_XXX with the new settings. However, since I have now discovered that StreamClassFilterReenumerateStreams (which I what I think is needed for this renegotiation) is broken, I am not sure I can do this any more. Was this even a good plan to start with? I really want to be able to use amcap/grapedit as a test interface for the camera (so I don't have to maintain more code than the camera driver for simple testing). Due to the programmability of the camera, it seems crazy to try and set up KS_VIDEO_STREAM_CONFIG_CAPS to permit all the possible combinations (in fact, I am not sure how I can force the image to be at the bottom of the frame or how to handle the differences between interlaced and progressive or the frame rate dependencies). Moreover, it is not clear to me that graphedit would even give me *all* the possibilities in the "Pin Properties:Stream Format:Output Size" dropdown if I could get the KS_VIDEO_STREAM_CONFIG_CAPS set up correctly (nor would I want the user to have to negotiate that list). It would be alot more intuitive for the user to simply type in the desired xsize/xstart, or ysize, in my custom property page and have the output jump to that format. That way I could do all the parameter validation (such as making sure the new bit rate does not exceed the bounds) and issue sensible messages before trying to send it to the camera. I had considered forcing the KS_DATARANGE_XXX structure to always look like it was 774x490 and then, based on the current settings of interlace/progressive, xsize, etc. draw the actual camera output in the right place - completely going behind the back of the KS_VIDEO_STREAM_CONFIG_CAPS/bitmapinfo path to actually set those parameters - and painting the rest of the image black. I suppose I could do something similar for the frame rates as well. Would that work? Is there at least a way to at least crop to the right size bitmap? I guess part of the trouble is it is not clear to me how much information set in the SRB_GET_STREAM_INFO phase can be renegotiated later during the SRB_GET_DATA_INTERSECTION phase of things. It looks like I cannot make suggestions in SRB_GET_DATA_INTERSECTION, only validate what the client wants to do (and thus if they don't pick what I want, the connection will fail). If I could make suggestions, then I could competely refill the PKSDATARANGE passed in the STREAM_DATA_INTERSECT_INFO. But it looks like that data is "read only". Any suggestions on solving this problem? Thanks for any help. Regards, Tom Tag: PCI64 DMA (master) read vs. write speed Tag: 37366
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 - How to set Product , Manufacturer Name.etc...... in HID description? as Title, I already read "Device Class Definition for Human Interface Devices (HID)" spec. and use "HID Description Tool" (dt.exe) to edit my HID-Description, but i don't know how to add string of my Manufacturer Name , Product Name.... etc.... where's detail and example to show how to add it!! help me, pls!, Thanks! Fish~ goldfish@ms5.url.com.tw Tag: PCI64 DMA (master) read vs. write speed Tag: 37364
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 - conflict with Winsock2.h If i use #include <winsock2.h> in my project driver and I Build it under the build environment ! I get conflict with the< winbase.h> and a legion of redifinition or unknow errors ! Help needed ! Thanks ! Tag: PCI64 DMA (master) read vs. write speed Tag: 37360
 - 6
 - Mythical FailReasonString in XP? KB 310123 says that if driver fails with code 10 and "If the device has a "FailReasonString" value in its hardware key, that string is displayed as the error message. The driver or enumerator places this registry string value there. If there is no "FailReasonString" in the hardware key, the following generic error message is displayed ..." I tried to deliberately fail a driver so that dev. manager displays code 10, and added string value FailReasonString into the hardware key of the device. Then opened dev. manager - it still displays the default message. So is it just documentation left over from WinMe? Regards -- PA Tag: PCI64 DMA (master) read vs. write speed Tag: 37357
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 - Printer Drivers: Update Driver from Server Properties on W2K Hi, I have a question regarding clicking on the "Update Driver" in the Server Properties dialog box from the Printers Folder under Windows 2000. I have made two versions of the printer driver. The older version is currently installed on the system. I would like to update to the newer version. However, the newer version have different filenames. When I try updating the drivers, Windows pops up a dialog box asking the user where to find some missing files. It seems to be assuming that the newer version should have the same file name as the older one. Is this a known issue with the Update Driver option? Is there no workaround for this problem? are there some directives I need to set in the .inf? Thanks, Will Tag: PCI64 DMA (master) read vs. write speed Tag: 37337
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 - Does Windows XP build-in usb storage driver support USB selective suspend? Our usb storage device would support USB selective suspend. It seems to need driver support. Does Windows XP build-in usb storage driver support USB selective suspend? Besides, do other Windows platforms support USB selective suspend? Best Regards Jackal Huang Tag: PCI64 DMA (master) read vs. write speed Tag: 37334
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 - DMTT_BITMAP I am developing a printer for Windows 2000 using Unidrv Currently, TrueType Fonts printing is supported with Download as Soft Fonts and Device Font substitution options These are represented in the DEVMODE as 0x2 (DMTT_DOWNLOAD) and 0x3 (DMTT_SUBDEV) I want to add 0x1 (DMTT_BITMAP) support. How will I do it Any information is really appreciated Thanks alvin Tag: PCI64 DMA (master) read vs. write speed Tag: 37332
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 - WDM Streaming minidriver problem Hi all I've constructed a WDM streaming minidriver that reads packets from USB hardware. These packets contain video The video packets get reassembled into video frame and appear on a capture pin and a preview pin. This works just fine, and I have clean video on my PC. I've add an still pin(Major type video; dub type RGB24) for capturing better quality sill image. On GraphEdit, when I render the still pin, it connect to the still pin on the Video Renderer just as I'd expect. But when I play it, my PC is halted with blue screen. My driver gets the SRB_READ_DATA stream request via the StrMiniReceiveStreamDataPacket() function. According to the DDK documentation, pSrb->CommandData.DataBufferArray is supposed to point an array of KSSTREAM_HEADERs. pSrb->NumberOfBuffers is supposed to indicate how many such headers there are in the array (in my case, NumberOfBuffers is 1). So I look inside the KSSTREAM_HEADER supplied, but FrameExtent == 1, I cann't believe that it is right. Also according to the DDK documentation, FrameExtent specify the size of Frame. In Captue and Preview case, FrameExtent has suitable value for a frame. But in Still case, It's wrong. I cann't understand why that variable has 1. Am I doing something wrong? PLS, any comment or advices for me. Thanks -- Jeon, Seung-Chul Tag: PCI64 DMA (master) read vs. write speed Tag: 37331
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 - WPA and ZWC I have added all required OIDs to convince ZWC that my 802.11 adapter is WPA-capable. Now ZWC allows me to select WPA and WPA-PSK as authentication options, and WEP, TKIP, and AES as encryption. Upon associating to a WPA AP, the access point sends EAPOL-Key packet, which I indicate to NDIS. ZWC keeps querying OID_802_11_ASSOCIATION_INFORMATION, but it doesn't set OID_802_11_ADD_KEY and no ethernet frames are being sent from the NDIS to my miniport. Where should I look? Unfortunately debug version of WPA ZWC is not available, so I am stuck. Tag: PCI64 DMA (master) read vs. write speed Tag: 37330
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 - device manager doesnot appear My application(app1.exe)which talks to virtual COM port(USB virtual COM driver by FTDI Ltd) has some problem. Driver works fine. My application terminated abnormally. I couldnot open the Device manager from then. When I try to open device manager, a mmc.exe appears in Task manager, but I dont see it in displayed. What was the problem. I assume, application however corrupt it is, cannot cause device manager to stop appearing. I didnot understand what can stop device manager from appearing. Thanks. Tag: PCI64 DMA (master) read vs. write speed Tag: 37329
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 - A question on Passthru IM driver Hi, I was going through the code of Passthru sample IM driver. I am not sure why the following has been done. (e.g., in MPSendPackets. And Similarly for PRECV_RSVD) ----------------------------- . . . PSEND_RSVD SendRsvd; SendRsvd = (PSEND_RSVD)(MyPacket->ProtocolReserved); SendRsvd->OriginalPkt = Packet; . . . ----------------------------- They are trying to store a pointer value "Packet" (4 bytes) in an array of UCHAR[1] "MyPacket->ProtocolReserved". This would work as long as the size of NDIS_PACKET is 3 bytes short of a 4-byte boundary (NDIS_PACKET comes out to be 57 bytes!). I am wondering why it is being done this way at all? Thanks, Sav Tag: PCI64 DMA (master) read vs. write speed Tag: 37327
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 - Audio Midi In Hello, This is an audio/midi driver related problem. I hope somebody can help. I try to write a simple midi-in driver where data is transfered from a device to some midi software application. Therefore i took the DDK dmusUART sample as a basis and modified it to my needs. Now the driver is just for input. By orienting at the sample and the DDK documentation all pin declarations and property request handlers should be correct. The device shows up correctly in the audio device listings and can be selected as input. But when i try to connect the IMXF is created, initialized and the output connects and immediately disconnects. After that the IMFX is destroyed. This happens about 28 times and no data is transfered. After that the application beliefs it ist connected but the driver shows no singns of life anymore and does not react on any further connection attempts. Can anyone help? Thanks. Best regards, Timo Tag: PCI64 DMA (master) read vs. write speed Tag: 37313
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 - Longhorn QoS from kernel-mode? Hi everyone, does anyone know if it will be possible to do QoS-stuff for network- connections from within kernel-mode? Tobias Tag: PCI64 DMA (master) read vs. write speed Tag: 37312
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 - Memory mapping on Windows Server 2003 Hi All, I have a very strange problem that is showing up on Windows Server 2003. This problem can't be reproduced on NT4, 2000, or XP. I have a small driver that maps an area of the paged pool into the user address space of a process, as follows (error checking code removed for clarity): // Allocate the memory for the sharead buffer pKernel = ExAllocatePool( PagedPool, dwMemSize ); // Next we allocate an MDL to describe the memory we will map pMdl = IoAllocateMdl( pKernel, dwMemSize, FALSE, FALSE, NULL ); // This returns Void, but raises an exception, on error MmProbeAndLockPages( pMdl, KernelMode, IoWriteAccess ); // Map the locked pages into User mode pUser = MmMapLockedPagesSpecifyCache( pMdl, UserMode, MmCached, NULL, FALSE, NormalPagePriority ); And to free the shared buffer we have another function: // Unmap the kernel buffer from User space MmUnmapLockedPages( pUser, pMdl ); // Unlock the kernel buffer from memory MmUnlockPages( pMdl ); // Free the MDL describing the memory IoFreeMdl( pMdl ); Data gets written into the shared buffer in kernel mode, and is read out in a user mode thread. Access to the buffer is protected by shared synch. objects. However, under high memory and disk loads, Windows 2003 is crashing in very strange ways. Usually, it bugchecks in a system thread which is trimming the working set of a process with: PFN_LIST_CORRUPT (4e) Typically caused by drivers passing bad memory descriptor lists (ie: calling MmUnlockPages twice with the same list, etc). If a kernel debugger is available get the stack trace. Arguments: Arg1: 00000099, A PTE or PFN is corrupt Arg2: 00000112, page frame number Arg3: 00000000, current page state Arg4: 00000000, 0 I can assure you that the unmap function is not being called before the machine crashes. I've also seem other strange crashes where whole pages of the kernel virtual memory space seem to be being replaced with garbage. E.g. a call to IoCallDriver was failing because the 4k page had been replaced by 0x4141414141... Another time the EPROCESS page was replaced with 0xcdcdcdcd... Does anyone have any suggestions as to why this might be happening? It's reproducable on several 2003 machines. More importantly, how can I track down the source of the problem? Driver verifier doesn't show up any problems... Please help me! Best Regards, Otto Tag: PCI64 DMA (master) read vs. write speed Tag: 37309
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 - MY HID Mouse, how to "write data" to my HID mouse form Win32 AP ? Hello, I write a driver (XP driver) for my HID mouse, my HID mouse need some data to proccess some things, ===================================================================== because my HID mouse have some LED and memory, i hope i can control it and write data to the memory of my HID mouse, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ===================================================================== when my user-mode win32 APPLICATION , CreateFile to open my HID mouse device, got this message "Access Denied!".. anyone know some way to solve it!? please help me!....... FISH goldfish@ms5.url.com.tw Tag: PCI64 DMA (master) read vs. write speed Tag: 37308
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 - NDIS Intermediate Driver (NDISPROT) extended with IOCTL_REBIND_ADAPTER I'am developing an application which requires to dynamically update the TCP/IP protocol settings for a WLAN card, such as DHCP enabled/disabled, APIPA enabled/disabled, setting IP address, setting Subnetmask, etc. The program shall run under XP SP1. I came to the conclusion that I need to provide my own IntermediateDriver, such as NDISUIO and extend it by my private IOCTL to rebind an adapter. I've been using the NDISPROT DDK example as a starting point. (NDISPROT and NDISUIO are basically the same, there is only very little difference. NDISPROT comes with Server2003 DDK, whereas NDISUIO comes with XP DDK). Anyway, the NDISPROT IM driver is running on my XP/SP1 system already. In nuiouser.h I have defined: #define IOCTL_NDISPROT_REBIND_ADAPTER \ _NDISPROT_CTL_CODE(0x206,METHOD_BUFFERED,FILE_READ_ACCESS | FILE_WRITE_ACCESS) The plan is to call this IOCTL from the application, which also works already. Now, I stuck a bit, as I dont know much enough about the inner working of NDIS. My initial idea was, to invoke: 1) ProtocolUnbindAdapter, and 2) ProtocolBindAdapter from within the 'NdisProtIoControl' function (equals 'NdisuioIoControl' in NDISUIO sample) in ntdisp.c file. Unfortunatly, I dont know what paramters to use when calling them. VOID ProtocolBindAdapter( OUT PNDIS_STATUS Status, IN NDIS_HANDLE BindContext, //what shall I use here??? IN PNDIS_STRING DeviceName, //what shall I use here??? IN PVOID SystemSpecific1, //what shall I use here??? IN PVOID SystemSpecific2 ); VOID ProtocolUnbindAdapter( OUT PNDIS_STATUS Status, IN NDIS_HANDLE ProtocolBindingContext, //what shall I use here??? IN NDIS_HANDLE UnbindContext //what shall I use here??? ); Can anyone help me on my problem? Does anyone has some example, on how they have done a similar solution? (PS: WINCE already does have a REBIND IOCTL, but I doubt that it helps for XP system...) I'm a still on the right track for dynamically re-initailising the IP, DHCP stuff? Tag: PCI64 DMA (master) read vs. write speed Tag: 37303
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 - Need help with I/O request for disk drivers Can someone show me how to setup and use the DeviceIoControl IOCTL_DISK_FORMAT_TRACKS_EX Operation This IOCTL is similar to IOCTL_DISK_FORMAT_TRACKS except that it allows the caller to specify several more parameters. The additional extended parameters are the format gap length, the number of sectors per track, and an array whose element size is equal to the number of sectors per track. This array represents the track layout. I'm particularly interested in the additional extended parameters, format gap length and the track layout array. Any help will be appreciated. John -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- Tag: PCI64 DMA (master) read vs. write speed Tag: 37301
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 - Communicate with printer driver. Hello! I have a program that prints some documents and I want to add markups to them. I don't have a source so I can't modify the document :(. Is it possible to modify the printer driver or maybe try to communicate with it. Any suggestions how to solve it? Thanks! adas Tag: PCI64 DMA (master) read vs. write speed Tag: 37300
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 - Resources assignment Hi!, I have a couple of questions: The device for which I'm writting a wdm driver has I/O ports, memory ranges, DMA and IRQs. So I've been writing a basic driver (just to read a port). 1. My first doubt is: If I only write in my start device routine that I have I/O port resources, could be a problem? I mean by just ignoring the other resorces, could a problem arise? 2. When the PnP manager sends me a filter resource requirements irp, does that mean that there is no information about the resources "inside" my device? Or is because of my driver?? Thanx Tag: PCI64 DMA (master) read vs. write speed Tag: 37294
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 - USB SCard Reader Driver Hello ! I need to write a USB SCard Reader driver. DDK provides an example of USB generic device and an example of PCMCIA SCard Reader. Is it possible to somehow merge them ? Or may be there is another way to build a USB SCard Reader driver without developing it from the scratch ? (or bying from MS programmers who sell such products independently from MS) Thank you ! Tag: PCI64 DMA (master) read vs. write speed Tag: 37286
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 - How to get lower stack device object in miniport driver? I am writing a miniport driver for audio. I want to request to lower stack device object. But, i have only PDO that come down in AddDevice(). How to get lower stack device object in miniport driver? thanks, Jogerse Tag: PCI64 DMA (master) read vs. write speed Tag: 37281
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 - Createfile failed(access denied) when logged on as limited user I have written a NDIS IM device driver and I used IOCTRL to communicate between my user mode app and the device driver. It works fine when logged on as Administrator but createfile fails (access denied) when logged on as limited user. Anyone know how to get around this? I called create file with the following attributes. CreateFile (TEXT"\\\\.\\MyDriver"), GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL |FILE_FLAG_OVERLAPPED, 0); Is this to do with how I installed the driver or the way I called createfile? Tag: PCI64 DMA (master) read vs. write speed Tag: 37279
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 - Print Optimization Could anyone explain what is really the purpose of the Print Optimization feature in the Advanced tab of the printer property page? What does Print Optimization feature do? Thanks. alvin Tag: PCI64 DMA (master) read vs. write speed Tag: 37278
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 - 802.1x - Setting the Dynamic WEP Keys Hi, I am writing an application that allows a user to connect to 802.1x access points. I connect to the access point, and use EAPOL to get both the broadcast and unicast keys. I try setting the keys using OID_802_11_ADD_WEP, but I don't get a valid connection (i.e a valid DHCP connection). Here is some pseudocode of what I am doing: if (!SetInfrastructureMode(Ndis802_11Infrastructure)) return FALSE; if (!SetAuthenticationMode(Ndis802_11AuthModeOpen)) return FALSE; if (!SetEncryptionStatus(Ndis802_11Encryption1Enabled)) return FALSE; if(!SetSSID(strSSID)) return FALSE; // do EAPOL code, to get WEP Keys if (!SetWEPKey(broadcastkey, keyLength, keyIndex,bBroadCast /*= TRUE */)) return FALSE; if (!SetWEPKey(unicastkey, keyLength, keyIndex,bBroadCast /*= FALSE*/)) return FALSE; The keys get set correctly, but I do not get a valid DHCP address. I found some Microsoft documentation, that basically said that unicast keys are not supported yet. Is this true? It also set that only one key can be set. The last key set is the active one. So I have tried only setting one of the keys, and it still does not work. Also below is a sample of how I set the WEP key. PNDIS_802_11_WEP pWEP; UCHAR * pOidData = NULL; int nLength; nLength = keyLength + 12; // D311 has a problem if the data is not at least 16 bytes long and has a 4 byte boundary if (nLength % 4) nLength += (4 - (nLength % 4)); pOidData = new UCHAR[nLength]; memset(pOidData,0,nLength); pWEP = (PNDIS_802_11_WEP) pOidData; pWEP->Length = nLength; // sizeof NIDS_802_11_WEP structure, this includes length of network key if (bBroadcast) pWEP->KeyIndex = keyIndex | 0x80000000; // we set bit 31 to specify global key else pWEP->KeyIndex = keyIndex; pWEP->KeyLength = keyLength; memcpy(pWEP->KeyMaterial,pKey,keyLength); If someone could tell me what I am missing or what I am doing wrong, it would be greatly appreciated. Thanks Shane Tag: PCI64 DMA (master) read vs. write speed Tag: 37272
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 - Shopsmart ASP FREE Shopping Cart <HTML> <HEAD> <META NAME="GENERATOR" Content="Microsoft DHTML Editing Control"> <TITLE></TITLE> </HEAD> <BODY> Download <A href="http://www.shopsmart.com.au">http://www.shopsmart.com.au</A> <A href="http://www.shopsmart.com.au"></A> Demo Storefront <A href="http://www.shopsmart.com.au/cart/">http://www.shopsmart.com.au/cart/</A> Demo Backoffice <A href="http://www.shopsmart.com.au/cart/backoffice/">http://www.shopsmart.com.au/cart/backoffice/</A> Order <A href="http://www.shopsmart.com.au/buynow.asp">http://www.shopsmart.com.au/buynow.asp</A>   </BODY> </HTML> Tag: PCI64 DMA (master) read vs. write speed Tag: 37266
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 - Crypto API calls from inside a filter driver I have a client that would like me to write a serial device filter driver and use the Crypto API calls to encrypt/decrypt the data stream. Is it legal/safe to call those routines from inside a filter driver? Dave Tag: PCI64 DMA (master) read vs. write speed Tag: 37261
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 - bulkusb, isousb, selsusp Hi All, There is the Pending I/O queue called NewRequestsQueue, and a procedure QueueRequest intended to enqueue requests while the Pending I/O queue is in HoldRequests state, and a procedure ProcessQueuedRequests intended to deplete the queue. The ProcessQueuedRequests is called in appropriate places, but the QueueRequest is never called, why? TIA Andrew Tag: PCI64 DMA (master) read vs. write speed Tag: 37260
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 - Sending a WM_ message from WDM to app Hi all! How can I send a windows message to an application from a WDM driver? Several years ago I wrote a VxD driver for an ISA device used in our equipment. Through an IOCTL message, our application would pass its handle and the VxD would store it. When the VxD had something ready for us it would use the handle to send the app a windows message at which time we might have to do some sort of IOCTL to the driver or more commonly read a message in dualported memory. Good or bad programming practice it worked quite well. We are migrating to XPe and I'm trying to translate this possibly dubious practice from VxD to WDM. I have all the tools. XP DDK, Walter Oneys book and Compuware Driverworks. I used VtoolsD for the last driver. Thanks in advance, Dave dskok@LOVELYSPAMlehighdim.com take out LOVELY and SPAM Tag: PCI64 DMA (master) read vs. write speed Tag: 37258
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 - how to deal with packet in calling NdisMIndicateReceivePacket I am trying to write a virtual network drive which the incoming traffic is from DeviceIoControl routines instead of a "real" NIC. Whenever the driver get any incoming traffic, it should call NdisMIndicateReceivePacket() to notify the protocol driver that a packet is ready. However, one of the input is (PPNDIS_PACKET) ReceivePackets. It turns out that there should be an array of packets. Here are my questions: 1) How often should I call NdisMIndicateReceivePacket()? 2) How should I deal with the packet array allocation? Should I allocate packet and associated buffer space in initialization? or whenever I need? Thanks!! Tag: PCI64 DMA (master) read vs. write speed Tag: 37252
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 - IoQueueWorkItem on Win98 ?!?!? Hi, I'm used to use the same P&P driver on Win2k\Win XP, and Win98. After adding the "IoQueueWorkItem" routine, the driver cant be loaded on Win98. I read somewhere that it doesn't supported on Win98. Is it true ? Is there any new/better routine that i can use for all WDM OS's ? I'm trying to avoid re-compiling the driver for each OS. Thanks a lot mich Tag: PCI64 DMA (master) read vs. write speed Tag: 37246
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 - Virtual Printer Driver Hi, I have to develop a virtual printer driver which can do the following stuff: - generating a bitmap( color/monochrome) - generation a textfile, in which all DrvTextOut string are stored - the complete strings should be parsed and replaced, if needed( special sequences ) - the replaced string should be updated in the bitmap I have tested both the msplotter sample in which I can easily acess the text in DrvTextOut and the oemdll sample in with which I can generate a bitmap. But the parsing and manipulation of matched string in the bitmap makes me headaches. Can a unidriver plugin do all the things? Any hints, tips are welcome. Regards, Harald Tag: PCI64 DMA (master) read vs. write speed Tag: 37245
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 - How to tell GDI no glyph index support Does anybody know of a GDIINFO cap or any other way to tell GDI that a printer driver does *not* support glyph indeces? We would like to ensure that only character codes make their way to DrvTextOut. thx, Andrei Tag: PCI64 DMA (master) read vs. write speed Tag: 37244
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 - SetupDiGetDeviceRegistryProperty The MSDN online suggests in "Driver Information in the Registry" http://msdn.microsoft.com/library/default.asp? url=/library/en-us/install/hh/install/install-over_6e3r.asp That IoGetDeviceProperty() and SetupDiGetDeviceRegistryProperty() be used instead of accessing the registry directly. I'm interested in getting the resources used by drivers. I realize that Device Manager reports these resources and so they are available. I tried using IoGetDeviceProperty, but blue screens with PNP_DETECTED_FATAL_ERROR 0x02 got in my way, thus I'm looking at SetupDiGetDeviceRegistryProperty(). However, the DevicePropertyBootConfigurationTranslated is not apparently available from SetupDiGetDeviceRegistryProperty (). The SPDRP_DEVICE_POWER_DATA doesn't provide the resources, and I'm looking at SPDRP_DRIVER which provides the Driver Key in the registry (Software Key). It also refers back to "Driver Information in the Registry." Can I get the resources for drivers without looking in the registry? Do I have to read the ...\Control\AllocConfig which is a REG_RESOURCE_LIST? And if so, what is the format of that binary data, a CM_RESOURCE_LIST type of thing? Thanks, John Muczynski Bauer Controls Ann Arbor, MI Tag: PCI64 DMA (master) read vs. write speed Tag: 37242
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 - Audio Midi Driver Hello, This is an audio/midi driver related problem. I hope somebody can help. I try to write a simple midi-in driver where data is transfered from a device to some midi software application. Therefore i took the DDK dmusUART sample as a basis and modified it to my needs. Now the driver is just for input. By orienting at the sample and the DDK documentation all pin declarations and property request handlers should be correct. The device shows up correctly in the audio device listings and can be selected as input. But when i try to connect the IMXF is created, initialized and the output connects and immediately disconnects. After that the IMFX is destroyed. This happens about 28 times and no data is transfered. After that the application beliefs it ist connected but the driver shows no singns of life anymore and does not react on any further connection attempts. Can anyone help? Thanks. Best regards, Timo Tag: PCI64 DMA (master) read vs. write speed Tag: 37237
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 - Printer Driver - Unidriver related This GPD code given below is taken from the ddk sample - hplj5.gpd *PrintableArea: PAIR(9600, 12720) *PrintableOrigin: PAIR(300, 220) *CursorOrigin: PAIR(300, 220) *Command: CmdSelect { *Order: DOC_SETUP.12 *Cmd: "<1B>&l2a8c1E<1B>*p0x0Y<1B>*c0t5760x7656Y" } my questions are: 1. What commands does *PrintableArea, *PrintableOrigin and *CursorOrigin insert into the PCL stream ? What is this used for ? I could not find much documentation about this in the DDK help also. 2. The printable area length according to calculation should have been 12760 (13200 - 220 - 220), but here it is only 12720 , where did the 40 units go? I have seen this difference in other In-box GPD's 3.I had created a GPD for my printer, letter paper size portrait mode values are as follows, *PrintableArea:PAIR(9800, 12800) *PrintableOrigin: PAIR(200, 200) *CursorOrigin: PAIR(200, 200) *Command: CmdSelect { *Order: DOC_SETUP.21 *Cmd: "<1B>&l2a8c1E" } When tested with WHQL tool the rectangle did not have the right side. When I changed the *PrintableArea to *PrintableArea:PAIR(9799, 12800) it started working fine. These measures are in terms of 1/1200 of an inch, how did that 1 unit make the difference ? -Thanks in advance Tag: PCI64 DMA (master) read vs. write speed Tag: 37236
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 - When can I read registry(HKLM\SOFTWARE) at booting? In driver, it always fails to read registry key of SOFTWARE hive at booting, is there any way to determine when to read it? Thanks in advance! -Polo Tag: PCI64 DMA (master) read vs. write speed Tag: 37234
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 - About USB selective suspend support I would support USB selective suspend feature for my usb storage device. What component need to be modified to support this feature? Can all Windows platforms support USB selective suspend? The usb storage device use the build-in driver on Windows XP. Does the build-in usb storage driver support USB selective suspend feature? Best Regards Jackal Huang Tag: PCI64 DMA (master) read vs. write speed Tag: 37233
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 - FW: Only dmDuplex member(PS Driver) cannot be updated on reason of PROPSHEETUI_REASON_DESTROY ***FW from microsoft.public.ddk.win2000.printer.video Hi All I am developing a PostScript printer driver by modifying WindowsXP ddk samples "Windows 2000 OEM UI Customization Sample (PS)", and encounterring a problem on updating dmDuplex member of public DEVMODE. It's very weird: 1. On original sample, system standard "Layout" and "Color" sheet is hidden, if I don't hide the 2 sheets(directly return E_NOTIMPL in IOemUI2::HideStandardUI()), then dmDuplex can be updated normally. 2. The problem is not reproduced on updating other public DEVMODE members, such as dmOrientation, dmCopies, dmPaperSize and dmScale. I was not using CPSUI to make my plugin property sheets, so I cannot use DrvUpdateUISetting() to update user settings. Below is the testing code I am using to update public and private DEVMODE under reason of PROPSHEETUI_REASON_DESTROY on hrOEMDocumentPropertySheets(PPROPSHEETUI_INFO pPSUIInfo, ...): ... POEMUIPSPARAM pOEMUIParam; PDEVMODE pTestDevmode; pOEMUIParam = (POEMUIPSPARAM)pPSUIInfo->lParamInit; pTestDevmode = (PDEVMODE) pOEMUIParam->pPublicDM; //check value of pTestDevmode->dmDuplex at here: it is 1. pTestDevmode->dmDuplex = 2; pPSUIInfo->pfnComPropSheet(pPSUIInfo->hComPropSheet, CPSFUNC_SET_RESULT, (LPARAM)NULL, (LPARAM)CPSUI_OK); //check value of pTestDevmode->dmDuplex at here: // it is 1 if Layout and Color sheet is hidden. <-- Problem! // it is 2 if Layout and Color sheet is not hidden. <-- Expected ... I will be appreciated if anyone can give me any advice on this. Tag: PCI64 DMA (master) read vs. write speed Tag: 37231
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 - Using KeSetTimerEx Hello All, Basically my requirement is to perform some action after every fixed time interval. I therefore create a "synchronization" type timer and using KeSetTimerEx () i schedule the timer. But it looks like the timer is not called at the time interval i need it to invoke the timer callback routine. I check this using KeQuerySystemTime (). Following are the steps: 1) KeInitializeTimerEx (&(pDevExt->myTimer), SynchronizationTimer); KeInitializeDpc (&(pDevExt->myTimerDpc), myTimerRoutine, pKsDev); 2) timerDelay.QuadPart = -180000; // 18 ms KeSetTimerEx (&(pDevExt->myTimer), timerDelay, 18, &(pDevExt->myTimerDpc)); But what i observed to my dismay is that my myTimerRoutine () was called at approximate intervals like: 15.625 ms 15.625 ms 15.625 ms 15.625 ms 31.250 ms and so on as the pattern keeps repeating.... Any reason why this is happenning? Is it possible to make the timer routine be called at the exact timer interval? Also, i used KeSetTimerEx (&(pDevExt->myTimer), timerDelay, &(pDevExt->myTimerDpc)); but the timer routine got invoked only once! Is there something iam missing here? Can someone throw some light on this? Regards, Hari. Tag: PCI64 DMA (master) read vs. write speed Tag: 37230
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 - Help required on Surprise Removal in XP (NDIS5.1) when writing NDIS-WDM Hello, I am writing a NDIS-WDM (USB ) driver for NDIS5.1 (XP). I used the sample from Eliyas. I saw the mailing lists and set the NDIS_ATTRIBUTE_SURPRISE_REMOVAL_OK bit in the call to NdisMSetAttributesEx from MiniportInitialize function. And I implemented the additional MiniportPnPEventNotify function also. When I plug-in the cable, Windows loads my driver. But the "System Tray" icon for "Safely Remove Hardware" appears. When I remove the cable, I get a call to my PnPEventNotify function with SurpriseRemoved event set. There is no pop-up error message as per XP standards. But, I was under the understanding that if the SURPRISE_REMOVAL_OK bit is set, even the "tray icon" does not appear. Please help me in making sure that my understanding is right. If I am wrong, what have I done wrong in the driver that this is not working? Any pointers or any kind of help is greatly appreciated. Thanks in advance for the great help. Best Regards, GNRaj Tag: PCI64 DMA (master) read vs. write speed Tag: 37226
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 - Help required on Surprise Removal in XP (NDIS5.1) when writing NDIS-WDM Hello, I am writing a NDIS-WDM (USB ) driver for NDIS5.1 (XP). I used the sample from Eliyas. I saw the mailing lists and set the NDIS_ATTRIBUTE_SURPRISE_REMOVAL_OK bit in the call to NdisMSetAttributesEx from MiniportInitialize function. And I implemented the additional MiniportPnPEventNotify function also. When I plug-in the cable, Windows loads my driver. But the "System Tray" icon for "Safely Remove Hardware" appears. When I remove the cable, I get a call to my PnPEventNotify function with SurpriseRemoved event set. There is no pop-up error message as per XP standards. But, I was under the understanding that if the SURPRISE_REMOVAL_OK bit is set, even the "tray icon" does not appear. Please help me in making sure that my understanding is right. If I am wrong, what have I done wrong in the driver that this is not working? Any pointers or any kind of help is greatly appreciated. Thanks in advance for the great help. Best Regards, GNRaj Tag: PCI64 DMA (master) read vs. write speed Tag: 37225
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 - Aysnch events Hi, I am having problems in generating Asynchronous events from kernel mode to user mode.I am sending a large data to the device driver from the user mode application and i want the deviceiocontrol to return immediately as soon as it places the request.At present what i am doing is once i get the request in the dispatch routine the status is set to STATUS_PENDING and complete the IRP in the DPC routine of the ISR.When i do this the deviceiocontrol is not returning immediately.please help me out. thanks sai Tag: PCI64 DMA (master) read vs. write speed Tag: 37224
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 - What's SetupDi equivalent to CM_Query_Remove_SubTree? I would query whether the usb device can be safely removed. CM_Query_Remove_SubTree should be able to do this. DDK document suggests use SetupDi API instead. What's SetupDi equivalent to CM_Query_Remove_SubTree? DDK document notes that use SetupDi function for many CM functions. I think it should tell us what's the SetupDi equivalent to those CM functions. Best Regards Jackal Huang Tag: PCI64 DMA (master) read vs. write speed Tag: 37220
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 - How to perform safe remove operation on Windows ME? The user can safely remove the usb device via system tray icon on Windows ME. I would write a program to perform the safely remove operation. CM_Request_Device_Eject can perform safe remove operation on Windows 2000/XP. But it is not supported on Windows ME. How does the program to do this on Wondows ME? Best Regards Jackal Huang Tag: PCI64 DMA (master) read vs. write speed Tag: 37216
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 - dmTTOption I have a printer driver for Windows 2000 using Unidrv. I made an application to modify the values of the DEVMODE of the driver using SetPrinter and GetPrinter. When I set the dmTTOption to DMTT_BITMAP, the driver cannot support Device Fonts anymore. What I understand, dmTTOption specifies only how True Type Fonts will be printed. Why this phenomenon occurs? Could anyone give some explanation or some written materials explaning this behavior? Thanks. alvin Tag: PCI64 DMA (master) read vs. write speed Tag: 37214
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 - Checked build for WPA-capable WZC Where can I get subj? Tag: PCI64 DMA (master) read vs. write speed Tag: 37210
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 - Did anybody try to write printer drivers for 10 or 12-bit gray level printers? Hi, The majority of printer drivers under Windows support only 8-bit B/W printers or 8-bit per channel color printers. Has anybody every tried to write a printer driver to support 10-bit (or higher) gray level printers under MS Windows environments? Specifically, if I have a 10-bit gray level image and a printer that does support 10-bit printing, I would like the full 10 bits of every pixel go un-truncated all the way from the application to the printing engine. If anybody did this before, could you please share your experiences? How would the 10-bit requirement fits the overall Windows printing architecture? Thanks a lot. Tag: PCI64 DMA (master) read vs. write speed Tag: 37209
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 - printer info Hi, I have to get printer utilization information such as number of jobs done, AveragePPM etc. Win32 API gives all these info as NULL or 0. So I thought of using driver level programming to extract such information from printer. I am new to driver level programming. Can someone help me know if it is possible through device driver programming like if I use "DrvDeviceCapabilities" method. I am using Windows 2000 server machine. Also I tried to use this method in my code, but the code just not compiles. It gives these errors - c:\ntddk\inc\ddrawint.h(1863) : error C2146: syntax error : missing ';' before identifier 'dwhContext' c:\ntddk\inc\ddrawint.h(1863) : error C2501: 'DWORD_PTR' : missing storage-class or type specifiers c:\ntddk\inc\ddrawint.h(1863) : error C2501: 'dwhContext' : missing storage-class or type specifiers c:\ntddk\inc\winddi.h(532) : error C2059: syntax error : '__stdcall' c:\ntddk\inc\winddi.h(532) : error C2091: function returns function c:\ntddk\inc\winddi.h(537) : error C2146: syntax error : missing ';' before identifier 'pfn' c:\ntddk\inc\winddi.h(537) : error C2501: 'PFN' : missing storage-class or type specifiers c:\ntddk\inc\winddi.h(537) : error C2501: 'pfn' : missing storage-class or type specifiers c:\ntddk\inc\winddi.h(2124) : error C2061: syntax error : identifier 'DESIGNVECTOR' c:\ntddk\inc\winddi.h(3790) : error C2061: syntax error : identifier 'DESIGNVECTOR' What I am missing here ? Thanks Ashish Tag: PCI64 DMA (master) read vs. write speed Tag: 37208

Inasmuch as the hardware for my PCI64 (66MHz) device is nearly identical for
both reads and writes, what possible driver/OS issue would cause my
write-to-device speed to be slower than the read-from-device? I'm currently
seeing apx 170MB/s for reads from the device and 70MB/s for writes to the
device. I'm using the bus commands 1110 and 1111 in the hardware with no
scatter/gather. Do these speeds look reasonable? Thanks.

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