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63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
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#ifndef __GENDRV_H__
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#define __GENDRV_H__
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#define GENDRV_MAX_EXT_DRVR 2
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#define GENDRV_DRVR_FLAG_IF_DRVR 0x01
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#define GENDRV_MSG_ADDDEVICE 0x01
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#define GENDRV_MSG_STOPDEVICE 0x02
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#define GENDRV_MSG_DISCDEVICE 0x03
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typedef struct _GENDRV_EXT_DRVR_ENTRY
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{
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LIST_ENTRY drvr_link; // used for dynamic load/unload driver
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ULONG drvr_key; // used to find the driver loaded, the key
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// is ( vendor_id << 16 )|( product_id ) or
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// ( class_id << 16 ) | ( sub_class_id << 8 ) | ( protocol_id ))
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PDRIVER_OBJECT pext_drvr; // the external driver count
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ULONG ref_count; // number of devices attached
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LIST_HEAD dev_list; // link the devices by deviceExtension->dev_obj_link
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} GENDRV_EXT_DRVR_ENTRY, *PGENDRV_EXT_DRVR_ENTRY;
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typedef struct _GENDRV_DRVR_EXTENSION
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{
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FAST_MUTEX drvr_ext_mutex;
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ULONG ext_drvr_count; // loaded driver count
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LIST_HEAD ext_drvr_list;
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GENDRV_EXT_DRVR_ENTRY ext_drvr_array[ GENDRV_MAX_EXT_DRVR ];
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}GENDRV_DRVR_EXTENSION, *PGENDRV_DRVR_EXTENSION;
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typedef struct _GENDRV_IF_CTX
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{
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UCHAR if_idx; // valid for if device
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PUSB_INTERFACE_DESC pif_desc;
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} GENDRV_IF_CTX, *PGENDRV_IF_IDX;
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typedef struct _GENDRV_DEVICE_EXTENSION
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{
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//this structure is the device extension for dev_obj
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//created for the device.
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DEVEXT_HEADER dev_ext_hdr;
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ULONG flags;
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LIST_ENTRY dev_obj_link; // this link is used by the driver object to track the existing dev_objs
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PGENDRV_EXT_DRVR_ENTRY ext_drvr_entry;
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PDEVICE_OBJECT pdo; // Our device object
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DEV_HANDLE dev_handle; // handle to the usb_dev under
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PUCHAR desc_buf;
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UCHAR dev_id; // used to build symbolic link
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GENDRV_IF_CTX if_ctx;
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KEVENT sync_event;
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KSPIN_LOCK dev_lock;
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PUSB_DRIVER pdriver;
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PUSB_DEV_MANAGER dev_mgr;
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} GENDRV_DEVICE_EXTENSION, *PGENDRV_DEVICE_EXTENSION;
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#endif
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