EZ-USB.rar

////////////////////////////////////////////////////////////////////// // // File: ezusbsys.c // $Archive: /USB/Drivers/ezusbdrv/ezusbsys.c $ // // Purpose: // General purpose USB device driver // // Environment: // kernel mode // // $Author: Mdn $ // // $History: ezusbsys.c $ // // ***************** Version 6 ***************** // User: Mdn Date: 9/17/01 Time: 10:54a // Updated in $/USB/Drivers/ezusbdrv // Fixed memory leak bug in ISO streaming code. Was setting the // PendingTransfers variable to the wrong value and not properly freeing // after stopping the ISO stream. // // ***************** Version 5 ***************** // User: Mdn Date: 10/06/00 Time: 10:08a // Updated in $/USB/Drivers/ezusbdrv // Added IOCTL_EZUSB_SET_FEATURE // // ***************** Version 4 ***************** // User: Mdn Date: 8/17/00 Time: 9:46a // Updated in $/USB/Drivers/ezusbdrv // added a generic get descriptor function. // // ***************** Version 3 ***************** // User: Mdn Date: 8/04/00 Time: 11:41a // Updated in $/USB/Drivers/ezmon // added support for monitor download to FX2 // // ***************** Version 2 ***************** // User: Mdn Date: 7/21/00 Time: 4:27p // Updated in $/USB/Drivers/ezusbdrv // Added a Started flag to the device extension. This flag gets set after // the device has successfully Started. It is used to prevent a potential // race condition where an application could get a handle (with // CreateFile()) before the device is completely enumerated. // // ***************** Version 1 ***************** // User: Tpm Date: 6/09/00 Time: 6:32p // Created in $/USB/Drivers/ezusbdrv // // ***************** Version 42 ***************** // User: Mdn Date: 5/05/00 Time: 10:24a // Updated in $/EzUsb/Drivers/ezusbdrv // comments // // ***************** Version 41 ***************** // User: Mdn Date: 4/18/00 Time: 2:45p // Updated in $/EzUsb/Drivers/ezusbdrv // fixed memory leak where I wasn't freeing an URB allocated for // vendor/class requests. // // ***************** Version 40 ***************** // User: Mdn Date: 1/21/00 Time: 10:03a // Updated in $/EzUsb/Drivers/ezusbdrv // modified device removal code to send an abort message to all pipes // before proceding with device removal. This solves the deadlock problem // that can occur when a transfer is pending and the device receives a // remove message. Before this change, the driver would block the removal // indefinitely waiting for all pending transfers to complete. // // ***************** Version 39 ***************** // User: Markm Date: 12/17/99 Time: 11:17a // Updated in $/EzUsb/Drivers/ezusbdrv // Removed interface select workaround for an obscure OSR2.1 bug since the // driver no longer supports Win95. Changed interface select so that it // selects the first interface/alternate setting in the config descriptor. // Before, it was hardcoded to select interface 0, AS 0. This should // allow the driver to handle composite devices more easily, although I // haven't tested it. // // ***************** Version 38 ***************** // User: Markm Date: 10/06/99 Time: 1:18p // Updated in $/EzUsb/Drivers/ezusbdrv // Made changes to Power IRP handling to fix the blue screen on shutdown // that was occuring under Win2K. Specifically, started using PoXXX() // calls for handling power IRPs. See code comments in // Ezusb_DispatchPower(). The PoXXX() calls are not supported by Win95, so // as of this revision, the driver will no longer work with Windows 95. // // ***************** Version 37 ***************** // User: Markm Date: 5/18/99 Time: 3:37p // Updated in $/EzUsb/Drivers/ezusbdrv // // ***************** Version 36 ***************** // User: Markm Date: 4/29/99 Time: 9:48a // Updated in $/EzUsb/Drivers/ezusbdrv // Fixed IOCTL_EZUSB_VENDOR_OR_CLASS_REQUEST so that it correctly returns // the number of bytes transferred. // // ***************** Version 35 ***************** // User: Markm Date: 4/16/99 Time: 3:39p // Updated in $/EzUsb/Drivers/ezusbdrv // more minor changes to get rid of compiler warnings. // // ***************** Version 34 ***************** // User: Markm Date: 4/12/99 Time: 10:26a // Updated in $/EzUsb/Drivers/ezusbdrv // minor changes to get rid of compiler warnings. // // ***************** Version 33 ***************** // User: Markm Date: 3/25/99 Time: 4:16p // Updated in $/EzUsb/Drivers/ezusbdrv // Fixed a bug in the surprise removal code I just added. I was returning // from the PnP dispatch function without unlocking the device object. // // ***************** Version 32 ***************** // User: Markm Date: 3/25/99 Time: 2:03p // Updated in $/EzUsb/Drivers/ezusbdrv // Added code to allow unplugs (surprise removal) under NT5 without // notifying the user. // // ***************** Version 31 ***************** // User: Markm Date: 2/23/99 Time: 9:50a // Updated in $/EzUsb/Drivers/ezusbdrv // Driver now supports ISO IN streaming with a path to user mode. // // ***************** Version 30 ***************** // User: Markm Date: 2/10/99 Time: 3:31p // Updated in $/EzUsb/Drivers/ezusbdrv // removed lots of unused code. Added ring buffer support functions. // // ***************** Version 29 ***************** // User: Markm Date: 2/01/99 Time: 11:57a // Updated in $/EzUsb/Drivers/ezusbdrv // Added preliminary support for ISO streaming. // // ***************** Version 28 ***************** // User: Markm Date: 6/12/98 Time: 4:23p // Updated in $/EzUsb/Drivers/ezusbdrv // modified pipe reset and abort code so that the driver will work // correctly under Windows 95 OSR2.1. For Win98, MS changed the size of // the URB_PIPE_REQUEST structure. They added an extra ulong to it. So, // a driver compiled with the 98 DDk and run under 95 will send the wrong // URB size. The solution is to check the USBDI version whenever I do a // pipe reset or abort. If the USBDI version is pre-win98, I subtract 4 // from the size of the urb. // // ***************** Version 27 ***************** // User: Markm Date: 4/10/98 Time: 2:52p // Updated in $/EZUSB/ezmon // Modified Intel Hex download code to stop the 8051 before downloading to // internal RAM. // // ***************** Version 26 ***************** // User: Markm Date: 4/09/98 Time: 4:39p // Updated in $/EZUSB/ezusb driver // Was not returning status information for ISO transfers. Now it does! // // ***************** Version 25 ***************** // User: Markm Date: 4/09/98 Time: 4:39p // Updated in $/EZUSB/ezmon // changes for monitor version of driver // // ***************** Version 24 ***************** // User: Markm Date: 4/09/98 Time: 3:09p // Updated in $/EZUSB/ezusb driver // nothing much // // ***************** Version 23 ***************** // User: Markm Date: 4/09/98 Time: 3:00p // Updated in $/EZUSB/ezusb driver // Added function to download Intel Hex File records to EZ-USB. For now, // this function is only used by the conditional build of the driver that // automatically downloads the Keil monitor. // // ***************** Version 22 ***************** // User: Markm Date: 4/07/98 Time: 1:52p // Updated in $/EZUSB/ezusb driver // Added IOCTL_EZUSB_GET_DRIVER_VERSION // // ***************** Version 21 ***************** // User: Markm Date: 4/06/98 Time: 4:26p // Updated in $/EZUSB/ezusb driver //