1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_USB_HIDMINOR_H 27 #define _SYS_USB_HIDMINOR_H 28 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 /* 35 * In order to support virtual keyboard/mouse, we should distinguish 36 * between internal virtual open and external physical open. 37 * 38 * When the physical devices are opened by application, they will 39 * be unlinked from the virtual device and their data stream will 40 * not be sent to the virtual device. When the opened physical 41 * devices are closed, they will be relinked to the virtual devices. 42 * 43 * All these automatic switch between virtual and physical are 44 * transparent. 45 * 46 * So we change minor node numbering scheme to be: 47 * external node minor num == instance << 1 48 * internal node minor num == instance << 1 | 0x1 49 * (There are only internal nodes for keyboard/mouse now.) 50 */ 51 #define HID_MINOR_BITS_MASK 0x1 52 #define HID_MINOR_INSTANCE_MASK ~HID_MINOR_BITS_MASK 53 #define HID_MINOR_INSTANCE_SHIFT 1 54 55 #define HID_MINOR_INTERNAL 0x1 56 #define HID_MINOR_MAKE_INTERNAL(minor) \ 57 ((minor) | HID_MINOR_INTERNAL) 58 59 #define HID_IS_INTERNAL_OPEN(minor) \ 60 (((minor) & HID_MINOR_INTERNAL)) 61 62 #define HID_MINOR_TO_INSTANCE(minor) \ 63 (((minor) & HID_MINOR_INSTANCE_MASK) >> \ 64 HID_MINOR_INSTANCE_SHIFT) 65 66 #define HID_CONSTRUCT_INTERNAL_MINOR(inst) \ 67 (((inst) << HID_MINOR_INSTANCE_SHIFT) | \ 68 HID_MINOR_INTERNAL) 69 70 #define HID_CONSTRUCT_EXTERNAL_MINOR(inst) \ 71 ((inst) << HID_MINOR_INSTANCE_SHIFT) 72 73 #ifdef __cplusplus 74 } 75 #endif 76 77 #endif /* _SYS_USB_HIDMINOR_H */ 78