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914 lines
26 KiB
914 lines
26 KiB
/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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ioctl.c
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Abstract: Human Input Device (HID) minidriver for Infrared (IR) devices
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The HID IR Minidriver (HidIr) provides an abstraction layer for the
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HID Class to talk to HID IR devices.
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Author:
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jsenior
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Environment:
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Kernel mode
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Revision History:
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--*/
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#include "pch.h"
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//
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// The HID descriptor has some basic device info and tells how long the report
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// descriptor is.
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//
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HIDIR_DESCRIPTOR HidIrHidDescriptor = {
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0x09, // length of HID descriptor
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0x21, // descriptor type == HID
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0x0100, // hid spec release
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0x00, // country code == Not Specified
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0x01, // number of HID class descriptors
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0x22, // report descriptor type
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0 // total length of report descriptor (to be set)
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};
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//
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// The report descriptor completely lays out what read and write packets will
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// look like and indicates what the semantics are for each field. This here is
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// what the report descriptor looks like in a broken out format. This is
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// actually retrieved from the registry (device key).
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//
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/*
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HID_REPORT_DESCRIPTOR HidIrReportDescriptor[] = {
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// Keyboard
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0x05, 0x01, // Usage Page (Generic Desktop),
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0x09, 0x06, // Usage (Keyboard),
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0xA1, 0x01, // Collection (Application),
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0x85, 0x01, // Report Id (1)
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0x05, 0x07, // usage page key codes
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0x19, 0xe0, // usage min left control
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0x29, 0xe7, // usage max keyboard right gui
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0x75, 0x01, // report size 1
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0x95, 0x08, // report count 8
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0x81, 0x02, // input (Variable)
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0x19, 0x00, // usage min 0
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0x29, 0x91, // usage max 91
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0x26, 0xff, 0x00, // logical max 0xff
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0x75, 0x08, // report size 8
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0x95, 0x01, // report count 1
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0x81, 0x00, // Input (Data, Array),
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0xC0, // End Collection
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// Consumer Controls
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0x05, 0x0c, // Usage Page (Consumer Controls),
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0x09, 0x01, // Usage (Consumer Control),
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0xA1, 0x01, // Collection (Application),
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0x85, 0x02, // Report Id (2)
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0x19, 0x00, // Usage Minimum (0),
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0x2a, 0x3c, 0x02, // Usage Maximum (23c)
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0x15, 0x00, // Logical Minimum (0),
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0x26, 0x3c, 0x02, // Logical Maximum (23c)
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0x95, 0x01, // Report Count (1),
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0x75, 0x10, // Report Size (16),
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0x81, 0x00, // Input (Data, Array),
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0xC0, // End Collection
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// Standby button
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0x05, 0x01, // Usage Page (Generic Desktop),
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0x09, 0x80, // Usage (System Control),
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0xa1, 0x01, // Collection (Application),
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0x85, 0x03, // Report Id (3)
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0x19, 0x81, // Usage Minimum (0x81),
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0x29, 0x83, // Usage Maximum (0x83),
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0x25, 0x01, // Logical Maximum(1),
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0x75, 0x01, // Report Size (1),
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0x95, 0x03, // Report Count (3),
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0x81, 0x02, // Input
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0x95, 0x05, // Report Count (5),
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0x81, 0x01, // Input (Constant),
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0xc0 // End Collection
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};
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//
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// The mapping table translates from what the irbus driver gives us into a
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// HID report to return to hidclass. The hid report is of the correct length
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// according to what the registry told us (device key).
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//
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USAGE_TABLE_ENTRY HidIrMappingTable[] = {
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{ 0x00001808, {0x01,0x00,0x1e}}, // 1
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{ 0x00001828, {0x01,0x00,0x1f}}, // 2
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{ 0x00001818, {0x01,0x00,0x20}}, // 3
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{ 0x0000182b, {0x01,0x02,0x20}}, // # (shift+3)
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{ 0x00001804, {0x01,0x00,0x21}}, // 4
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{ 0x00001824, {0x01,0x00,0x22}}, // 5
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{ 0x00001814, {0x01,0x00,0x23}}, // 6
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{ 0x0000180c, {0x01,0x00,0x24}}, // 7
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{ 0x0000182c, {0x01,0x00,0x25}}, // 8
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{ 0x00000001, {0x01,0x00,0x55}}, // Numpad *
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{ 0x0000181c, {0x01,0x00,0x26}}, // 9
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{ 0x00001822, {0x01,0x00,0x27}}, // 0
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{ 0x00001836, {0x01,0x00,0x28}}, // return
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{ 0x0000000B, {0x01,0x04,0x29}}, // alt+escape
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{ 0x0000182b, {0x01,0x00,0x2a}}, // delete (backspace)
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{ 0x00001806, {0x01,0x00,0x2b}}, // tab
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{ 0x0000180e, {0x01,0x02,0x2b}}, // shift+tab
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{ 0x00001826, {0x01,0x00,0x4b}}, // page up
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{ 0x0000182e, {0x01,0x00,0x4e}}, // page down
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{ 0x0000181e, {0x01,0x00,0x51}}, // down
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{ 0x00001816, {0x01,0x00,0x52}}, // up
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{ 0x0000181a, {0x01,0x00,0x65}}, // context
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{ 0x00001813, {0x02,0x09,0x02}}, // AC Properties
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{ 0x00001800, {0x02,0x24,0x02}}, // AC Back
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{ 0x0000180a, {0x02,0x2a,0x02}}, // AC favorites
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{ 0x00001823, {0x02,0x30,0x02}}, // AC full screen
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{ 0x00001830, {0x02,0xb0,0x00}}, // AC Media play
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{ 0x00001830, {0x02,0xb1,0x00}}, // AC Media pause
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{ 0x0000183e, {0x02,0xb2,0x00}}, // AC Media record
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{ 0x00001829, {0x02,0xb3,0x00}}, // AC FF
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{ 0x00001838, {0x02,0xb4,0x00}}, // AC RW
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{ 0x00001831, {0x02,0xb5,0x00}}, // AC Media next track
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{ 0x00001811, {0x02,0xb6,0x00}}, // AC Media previous track
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{ 0x00001821, {0x02,0xb7,0x00}}, // AC Media Stop
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{ 0x0000000B, {0x02,0xe9,0x00}}, // AC volume up
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{ 0x0000000B, {0x02,0xea,0x00}}, // AC volume down
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{ 0x0000000B, {0x02,0xe2,0x00}}, // AC volume mute
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{ 0x00001803, {0x02,0x8d,0x00}}, // AC select program guide
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{ 0x00001801, {0x02,0x9c,0x00}}, // AC channel up
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{ 0x0000183c, {0x02,0x9d,0x00}}}; // AC channel down
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*/
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NTSTATUS
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HidIrRemoveDevice(
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IN PDEVICE_OBJECT DeviceObject
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);
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NTSTATUS
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HidIrCleanupDevice(
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IN PDEVICE_OBJECT DeviceObject
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);
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NTSTATUS
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HidIrStopDevice(
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IN PDEVICE_OBJECT DeviceObject
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);
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NTSTATUS
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HidIrStopCompletion(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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HidIrStartCompletion(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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HidIrInitDevice(
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IN PDEVICE_OBJECT DeviceObject
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);
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NTSTATUS
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HidIrStartDevice(
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IN PDEVICE_OBJECT DeviceObject
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);
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#ifdef ALLOC_PRAGMA
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// NOTE: Every single function in this file is pageable.
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#pragma alloc_text(PAGE, HidIrStartDevice)
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#pragma alloc_text(PAGE, HidIrPnP)
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#pragma alloc_text(PAGE, HidIrRemoveDevice)
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#pragma alloc_text(PAGE, HidIrCleanupDevice)
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#pragma alloc_text(PAGE, HidIrStopDevice)
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#pragma alloc_text(PAGE, HidIrStopCompletion)
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#pragma alloc_text(PAGE, HidIrStartCompletion)
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#pragma alloc_text(PAGE, HidIrInitDevice)
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#endif
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NTSTATUS
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HidIrStartDevice(
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IN PDEVICE_OBJECT DeviceObject
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)
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/*++
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Routine Description:
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Begins initialization a given instance of a HID device. Work done here occurs before
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the parent node gets to do anything.
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Arguments:
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DeviceObject - pointer to the device object for this instance.
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Return Value:
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NT status code
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--*/
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{
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PHIDIR_EXTENSION devExt;
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NTSTATUS ntStatus = STATUS_SUCCESS;
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ULONG oldDeviceState;
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PAGED_CODE();
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// Get a pointer to the device extension
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devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
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HidIrKdPrint((3, "HidIrStartDevice devExt = %x", devExt));
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// Start the device
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oldDeviceState = devExt->DeviceState;
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devExt->DeviceState = DEVICE_STATE_STARTING;
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KeResetEvent(&devExt->AllRequestsCompleteEvent);
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if ((oldDeviceState == DEVICE_STATE_STOPPING) ||
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(oldDeviceState == DEVICE_STATE_STOPPED) ||
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(oldDeviceState == DEVICE_STATE_REMOVING)){
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/*
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* We did an extra decrement when the device was stopped.
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* Now that we're restarting, we need to bump it back to zero.
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*/
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NTSTATUS incStat = HidIrIncrementPendingRequestCount(devExt);
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ASSERT(NT_SUCCESS(incStat));
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ASSERT(devExt->NumPendingRequests == 0);
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HidIrKdPrint((2, "Got start-after-stop; re-incremented pendingRequestCount"));
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}
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HidIrKdPrint((3, "HidIrStartDevice Exit = %x", ntStatus));
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return ntStatus;
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}
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NTSTATUS
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HidIrQueryDeviceKey (
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IN HANDLE Handle,
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IN PWCHAR ValueNameString,
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OUT PVOID *Data,
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OUT ULONG *DataLength
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)
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{
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NTSTATUS status;
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UNICODE_STRING valueName;
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ULONG length;
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KEY_VALUE_FULL_INFORMATION info;
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ASSERT(Data);
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ASSERT(DataLength);
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// Init
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*Data = NULL;
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*DataLength = 0;
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RtlInitUnicodeString (&valueName, ValueNameString);
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status = ZwQueryValueKey (Handle,
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&valueName,
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KeyValueFullInformation,
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&info,
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sizeof(info),
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&length);
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if (STATUS_BUFFER_TOO_SMALL == status ||
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STATUS_BUFFER_OVERFLOW == status) {
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PKEY_VALUE_FULL_INFORMATION fullInfo;
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fullInfo = ALLOCATEPOOL (PagedPool, length);
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if (fullInfo) {
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status = ZwQueryValueKey (Handle,
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&valueName,
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KeyValueFullInformation,
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fullInfo,
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length,
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&length);
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if (NT_SUCCESS(status)) {
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*DataLength = fullInfo->DataLength;
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*Data = ALLOCATEPOOL (NonPagedPool, fullInfo->DataLength);
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if (*Data) {
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RtlCopyMemory (*Data,
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((PUCHAR) fullInfo) + fullInfo->DataOffset,
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fullInfo->DataLength);
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} else {
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status = STATUS_INSUFFICIENT_RESOURCES;
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}
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}
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ExFreePool (fullInfo);
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} else {
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status = STATUS_INSUFFICIENT_RESOURCES;
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}
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} else if (NT_SUCCESS(status)) {
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HIR_TRAP(); // we didn't alloc any space. This is bad.
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status = STATUS_UNSUCCESSFUL;
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}
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return status;
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}
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#define HIDIR_REPORT_LENGTH L"ReportLength"
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#define HIDIR_REPORT_DESCRIPTOR L"ReportDescriptor"
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#define HIDIR_MAPPING_TABLE L"ReportMappingTable"
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#define HIDIR_VENDOR_ID L"VendorID"
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#define HIDIR_PRODUCT_ID L"ProductID"
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NTSTATUS
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HidIrInitDevice(
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IN PDEVICE_OBJECT DeviceObject
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)
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/*++
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Routine Description:
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Get the device information and attempt to initialize a configuration
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for a device. If we cannot identify this as a valid HID device or
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configure the device, our start device function is failed.
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Arguments:
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DeviceObject - pointer to a device object.
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Return Value:
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NT status code.
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--*/
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{
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NTSTATUS status = STATUS_SUCCESS;
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PHIDIR_EXTENSION devExt;
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PHID_DEVICE_EXTENSION hidExtension;
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HANDLE devInstRegKey = NULL;
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ULONG dataLen;
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PAGED_CODE();
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HidIrKdPrint((3, "HidIrInitDevice Entry"));
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hidExtension = DeviceObject->DeviceExtension;
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devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
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devExt->HidDescriptor = HidIrHidDescriptor;
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status = IoOpenDeviceRegistryKey (hidExtension->PhysicalDeviceObject,
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PLUGPLAY_REGKEY_DEVICE,
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STANDARD_RIGHTS_READ,
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&devInstRegKey);
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if (NT_SUCCESS (status)) {
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PULONG reportLength;
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status = HidIrQueryDeviceKey (devInstRegKey,
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HIDIR_REPORT_LENGTH,
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&reportLength,
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&dataLen);
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if (NT_SUCCESS (status)) {
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if (dataLen == sizeof(ULONG)) {
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devExt->ReportLength = *reportLength;
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} else {
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status = STATUS_INVALID_BUFFER_SIZE;
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}
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ExFreePool(reportLength);
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}
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}
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if (NT_SUCCESS(status)) {
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status = HidIrQueryDeviceKey (devInstRegKey,
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HIDIR_REPORT_DESCRIPTOR,
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&devExt->ReportDescriptor,
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&dataLen);
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if (NT_SUCCESS(status)) {
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ASSERT(dataLen);
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devExt->HidDescriptor.DescriptorList[0].wDescriptorLength = (USHORT)dataLen;
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}
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}
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if (NT_SUCCESS(status)) {
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PULONG vendorID;
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status = HidIrQueryDeviceKey (devInstRegKey,
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HIDIR_VENDOR_ID,
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&vendorID,
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&dataLen);
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if (NT_SUCCESS (status)) {
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if (dataLen == sizeof(ULONG)) {
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devExt->VendorID = (USHORT)*vendorID;
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} else {
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status = STATUS_INVALID_BUFFER_SIZE;
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}
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ExFreePool(vendorID);
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}
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}
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if (NT_SUCCESS(status)) {
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PULONG productID;
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status = HidIrQueryDeviceKey (devInstRegKey,
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HIDIR_PRODUCT_ID,
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&productID,
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&dataLen);
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if (NT_SUCCESS (status)) {
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if (dataLen == sizeof(ULONG)) {
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devExt->ProductID = (USHORT)*productID;
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} else {
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status = STATUS_INVALID_BUFFER_SIZE;
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}
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ExFreePool(productID);
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}
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}
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if (NT_SUCCESS (status)) {
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PUCHAR mappingTable;
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status = HidIrQueryDeviceKey (devInstRegKey,
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HIDIR_MAPPING_TABLE,
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&mappingTable,
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&dataLen);
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if (NT_SUCCESS(status)) {
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ULONG i;
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ULONG entrySize = HIDIR_TABLE_ENTRY_SIZE(devExt->ReportLength);
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ASSERT(dataLen > sizeof(ULONG)+devExt->ReportLength); // at least one entry
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ASSERT((dataLen % (sizeof(ULONG)+devExt->ReportLength)) == 0); // not malformed data
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// This will round down for malformed data.
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devExt->NumUsages = dataLen / (sizeof(ULONG)+devExt->ReportLength);
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// I have to do all this for 64-bit.
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devExt->MappingTable = ALLOCATEPOOL(NonPagedPool, devExt->NumUsages*entrySize);
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if (devExt->MappingTable) {
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// Fill in the table
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for (i = 0; i < devExt->NumUsages; i++) {
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RtlCopyMemory(devExt->MappingTable+(entrySize*i),
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mappingTable+((sizeof(ULONG)+devExt->ReportLength)*i),
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sizeof(ULONG));
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RtlCopyMemory(devExt->MappingTable+(entrySize*i)+sizeof(ULONG),
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mappingTable+((sizeof(ULONG)+devExt->ReportLength)*i)+sizeof(ULONG),
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devExt->ReportLength);
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}
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} else {
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status = STATUS_INSUFFICIENT_RESOURCES;
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}
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ExFreePool(mappingTable);
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}
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}
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if (devInstRegKey) {
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ZwClose(devInstRegKey);
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}
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if (NT_SUCCESS(status)) {
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HIDP_DEVICE_DESC deviceDesc; // 0x30 bytes
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// Find the keyboard and standby button collections and their associated report IDs.
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ASSERT(!devExt->KeyboardReportIdValid);
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if (NT_SUCCESS(HidP_GetCollectionDescription(
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devExt->ReportDescriptor,
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devExt->HidDescriptor.DescriptorList[0].wDescriptorLength,
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NonPagedPool,
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&deviceDesc))) {
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ULONG i,j;
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UCHAR nCollectionKbd, nCollectionStandby;
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BOOLEAN foundKbd = FALSE, foundStandby = FALSE;
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for (i = 0; i < deviceDesc.CollectionDescLength; i++) {
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PHIDP_COLLECTION_DESC collection = &deviceDesc.CollectionDesc[i];
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if (collection->UsagePage == HID_USAGE_PAGE_GENERIC &&
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(collection->Usage == HID_USAGE_GENERIC_KEYBOARD ||
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collection->Usage == HID_USAGE_GENERIC_KEYPAD)) {
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// Found the collection, onto the report id!
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nCollectionKbd = collection->CollectionNumber;
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foundKbd = TRUE;
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} else if (collection->UsagePage == HID_USAGE_PAGE_GENERIC &&
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collection->Usage == HID_USAGE_GENERIC_SYSTEM_CTL) {
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nCollectionStandby = collection->CollectionNumber;
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foundStandby = TRUE;
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}
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}
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for (j = 0; j < deviceDesc.ReportIDsLength; j++) {
|
|
if (foundKbd && deviceDesc.ReportIDs[j].CollectionNumber == nCollectionKbd) {
|
|
|
|
// I make the assumption that there is only one report id on this collection.
|
|
devExt->KeyboardReportId = deviceDesc.ReportIDs[j].ReportID;
|
|
devExt->KeyboardReportIdValid = TRUE;
|
|
} else if (foundStandby && deviceDesc.ReportIDs[j].CollectionNumber == nCollectionStandby) {
|
|
|
|
// I make the assumption that there is only one report id on this collection.
|
|
devExt->StandbyReportId = deviceDesc.ReportIDs[j].ReportID;
|
|
devExt->StandbyReportIdValid = TRUE;
|
|
}
|
|
}
|
|
|
|
HidP_FreeCollectionDescription(&deviceDesc);
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS
|
|
HidIrStartCompletion(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Completes initialization a given instance of a HID device. Work done here occurs
|
|
after the parent node has done its StartDevice.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - pointer to the device object for this instance.
|
|
|
|
Return Value:
|
|
|
|
NT status code
|
|
|
|
--*/
|
|
{
|
|
PHIDIR_EXTENSION devExt;
|
|
NTSTATUS ntStatus;
|
|
|
|
PAGED_CODE();
|
|
|
|
HidIrKdPrint((3, "HidIrStartCompletion Enter"));
|
|
|
|
//
|
|
// Get a pointer to the device extension
|
|
//
|
|
|
|
devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
|
|
|
|
devExt->DeviceState = DEVICE_STATE_RUNNING;
|
|
|
|
HidIrKdPrint((3, "DeviceObject (%x) was started!", DeviceObject));
|
|
|
|
ntStatus = HidIrInitDevice(DeviceObject);
|
|
|
|
if(NT_SUCCESS(ntStatus)) {
|
|
HidIrKdPrint((3, "DeviceObject (%x) was configured!", DeviceObject));
|
|
} else {
|
|
HidIrKdPrint((1, "'HIDIR.SYS: DeviceObject (%x) configuration failed!", DeviceObject));
|
|
devExt->DeviceState = DEVICE_STATE_STOPPING;
|
|
}
|
|
|
|
HidIrKdPrint((3, "HidIrStartCompletion Exit = %x", ntStatus));
|
|
|
|
return ntStatus;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
HidIrStopDevice(
|
|
IN PDEVICE_OBJECT DeviceObject
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Stops a given instance of a device. Work done here occurs before the parent
|
|
does its stop device.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - pointer to the device object.
|
|
|
|
Return Value:
|
|
|
|
NT status code
|
|
|
|
--*/
|
|
{
|
|
NTSTATUS ntStatus = STATUS_SUCCESS;
|
|
PHIDIR_EXTENSION devExt;
|
|
|
|
PAGED_CODE();
|
|
|
|
HidIrKdPrint((3, "HidIrStopDevice Enter"));
|
|
|
|
//
|
|
// Get a pointer to the device extension
|
|
//
|
|
|
|
devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
|
|
|
|
HidIrKdPrint((3, "DeviceExtension = %x", devExt));
|
|
|
|
devExt->DeviceState = DEVICE_STATE_STOPPING;
|
|
|
|
HidIrDecrementPendingRequestCount(devExt);
|
|
KeWaitForSingleObject( &devExt->AllRequestsCompleteEvent,
|
|
Executive,
|
|
KernelMode,
|
|
FALSE,
|
|
NULL );
|
|
|
|
//
|
|
// Stop the device
|
|
//
|
|
|
|
HidIrKdPrint((3, "HidIrStopDevice = %x", ntStatus));
|
|
|
|
return ntStatus;
|
|
}
|
|
|
|
VOID
|
|
HidIrFreeResources(
|
|
PHIDIR_EXTENSION DevExt
|
|
)
|
|
{
|
|
PAGED_CODE();
|
|
|
|
if (DevExt->ReportDescriptor) {
|
|
ExFreePool(DevExt->ReportDescriptor);
|
|
DevExt->ReportDescriptor = NULL;
|
|
}
|
|
|
|
if (DevExt->MappingTable) {
|
|
ExFreePool(DevExt->MappingTable);
|
|
DevExt->MappingTable = NULL;
|
|
}
|
|
|
|
DevExt->KeyboardReportIdValid = FALSE;
|
|
DevExt->StandbyReportIdValid = FALSE;
|
|
}
|
|
|
|
NTSTATUS
|
|
HidIrStopCompletion(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Stops a given instance of a device. Work done here occurs after the parent
|
|
has done its stop device.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - pointer to the device object.
|
|
|
|
Return Value:
|
|
|
|
NT status code
|
|
|
|
--*/
|
|
{
|
|
PHIDIR_EXTENSION devExt;
|
|
NTSTATUS ntStatus;
|
|
|
|
PAGED_CODE();
|
|
|
|
HidIrKdPrint((3, "HidIrStopCompletion Enter"));
|
|
|
|
//
|
|
// Get a pointer to the device extension
|
|
//
|
|
|
|
devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
|
|
|
|
HidIrKdPrint((3, "DeviceExtension = %x", devExt));
|
|
|
|
ntStatus = Irp->IoStatus.Status;
|
|
|
|
if(NT_SUCCESS(ntStatus)) {
|
|
|
|
HidIrKdPrint((3, "DeviceObject (%x) was stopped!", DeviceObject));
|
|
|
|
} else {
|
|
//
|
|
// The PnP call failed!
|
|
//
|
|
|
|
HidIrKdPrint((3, "DeviceObject (%x) failed to stop!", DeviceObject));
|
|
}
|
|
|
|
HidIrFreeResources(devExt);
|
|
|
|
devExt->DeviceState = DEVICE_STATE_STOPPED;
|
|
|
|
HidIrKdPrint((3, "HidIrStopCompletion Exit = %x", ntStatus));
|
|
|
|
return ntStatus;
|
|
}
|
|
|
|
NTSTATUS
|
|
HidIrCleanupDevice(
|
|
IN PDEVICE_OBJECT DeviceObject
|
|
)
|
|
{
|
|
PHIDIR_EXTENSION devExt;
|
|
ULONG oldDeviceState;
|
|
|
|
PAGED_CODE();
|
|
|
|
HidIrKdPrint((3, "HidIrCleanupDevice Enter"));
|
|
|
|
devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
|
|
|
|
oldDeviceState = devExt->DeviceState;
|
|
devExt->DeviceState = DEVICE_STATE_REMOVING;
|
|
|
|
if (devExt->QueryRemove) {
|
|
// We are severing our relationship with this device
|
|
// through a disable/uninstall in device manager.
|
|
// If the device is virtually cabled, we must "unplug"
|
|
// that device so that it can go elsewhere.
|
|
}
|
|
|
|
if (oldDeviceState == DEVICE_STATE_RUNNING) {
|
|
HidIrDecrementPendingRequestCount(devExt);
|
|
} else {
|
|
ASSERT( devExt->NumPendingRequests == -1 );
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS
|
|
HidIrRemoveDevice(
|
|
IN PDEVICE_OBJECT DeviceObject
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Removes a given instance of a device.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - pointer to the device object.
|
|
|
|
Return Value:
|
|
|
|
NT status code
|
|
|
|
--*/
|
|
{
|
|
NTSTATUS ntStatus = STATUS_SUCCESS;
|
|
PHIDIR_EXTENSION devExt;
|
|
|
|
PAGED_CODE();
|
|
|
|
HidIrKdPrint((3, "HidIrRemoveDevice Enter"));
|
|
|
|
//
|
|
// Get a pointer to the device extension
|
|
//
|
|
|
|
devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
|
|
|
|
HidIrKdPrint((3, "DeviceExtension = %x", devExt));
|
|
|
|
HidIrCleanupDevice(DeviceObject);
|
|
|
|
KeWaitForSingleObject( &devExt->AllRequestsCompleteEvent,
|
|
Executive,
|
|
KernelMode,
|
|
FALSE,
|
|
NULL );
|
|
|
|
KeCancelTimer( &devExt->IgnoreStandbyTimer );
|
|
|
|
HidIrFreeResources(devExt);
|
|
|
|
ASSERT(devExt->NumPendingRequests == -1);
|
|
|
|
HidIrKdPrint((3, "HidIrRemoveDevice = %x", ntStatus));
|
|
|
|
return ntStatus;
|
|
}
|
|
|
|
NTSTATUS
|
|
HidIrPnP(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Process the PnP IRPs sent to this device.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - pointer to a device object.
|
|
|
|
Irp - pointer to an I/O Request Packet.
|
|
|
|
Return Value:
|
|
|
|
NT status code.
|
|
|
|
--*/
|
|
{
|
|
NTSTATUS ntStatus = STATUS_SUCCESS;
|
|
PIO_STACK_LOCATION IrpStack;
|
|
PIO_STACK_LOCATION NextStack;
|
|
PHIDIR_EXTENSION devExt;
|
|
|
|
PAGED_CODE();
|
|
|
|
//
|
|
// Get a pointer to the device extension
|
|
//
|
|
|
|
devExt = GET_MINIDRIVER_HIDIR_EXTENSION(DeviceObject);
|
|
|
|
//
|
|
// Get a pointer to the current location in the Irp
|
|
//
|
|
|
|
IrpStack = IoGetCurrentIrpStackLocation (Irp);
|
|
|
|
HidIrKdPrint((3, "HidIrPnP fn %x DeviceObject = %x DeviceExtension = %x", IrpStack->MinorFunction, DeviceObject, devExt));
|
|
|
|
switch(IrpStack->MinorFunction)
|
|
{
|
|
case IRP_MN_START_DEVICE:
|
|
ntStatus = HidIrStartDevice(DeviceObject);
|
|
break;
|
|
|
|
case IRP_MN_STOP_DEVICE:
|
|
ntStatus = HidIrStopDevice(DeviceObject);
|
|
break;
|
|
|
|
case IRP_MN_SURPRISE_REMOVAL:
|
|
ntStatus = HidIrCleanupDevice(DeviceObject);
|
|
break;
|
|
|
|
case IRP_MN_QUERY_REMOVE_DEVICE:
|
|
devExt->QueryRemove = TRUE;
|
|
break;
|
|
|
|
case IRP_MN_CANCEL_REMOVE_DEVICE:
|
|
devExt->QueryRemove = FALSE;
|
|
break;
|
|
|
|
case IRP_MN_REMOVE_DEVICE:
|
|
ntStatus = HidIrRemoveDevice(DeviceObject);
|
|
break;
|
|
|
|
}
|
|
|
|
if (NT_SUCCESS(ntStatus)) {
|
|
|
|
ntStatus = HidIrCallDriverSynchronous(DeviceObject, Irp);
|
|
|
|
switch(IrpStack->MinorFunction)
|
|
{
|
|
case IRP_MN_START_DEVICE:
|
|
if (NT_SUCCESS(ntStatus)) {
|
|
ntStatus = HidIrStartCompletion(DeviceObject, Irp);
|
|
Irp->IoStatus.Status = ntStatus;
|
|
|
|
}
|
|
if (!NT_SUCCESS(ntStatus)) {
|
|
HidIrDecrementPendingRequestCount(devExt);
|
|
}
|
|
break;
|
|
|
|
case IRP_MN_STOP_DEVICE:
|
|
ntStatus = HidIrStopCompletion(DeviceObject, Irp);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Set the status of the Irp
|
|
Irp->IoStatus.Status = ntStatus;
|
|
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
HidIrKdPrint((3, "HidIrPnP Exit status %x", ntStatus));
|
|
|
|
return ntStatus;
|
|
}
|
|
|