uhcipolled.h revision 7492:2387323b838f 
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_UHCI_POLLED_H
27#define	_SYS_USB_UHCI_POLLED_H
28
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34/*
35 * This header file describes the data structures required for the Host
36 * Controller Driver (HCD) to work in POLLED mode which will be  either
37 * OBP mode for Sparc architecture or PC PROM mode for X86 architecture
38 */
39#define	POLLED_RAW_BUF_SIZE	8
40
41/*
42 * These two flags are used to determine if this structure is already in
43 * use. We should only save off the controller state information once,
44 * and restore it once. These flags are used by the uhci_polled_flags below.
45 */
46#define	POLLED_INPUT_MODE		0x01
47#define	POLLED_INPUT_MODE_INUSE		0x04
48#define	POLLED_OUTPUT_MODE		0x10
49#define	POLLED_OUTPUT_MODE_INUSE	0x40
50
51/*
52 * For uhci bandwidth of low speed interrupt devices limits,
53 * one host controller can support 7 keyboards only.
54 */
55
56#define	MAX_NUM_FOR_KEYBORAD		0x7
57
58/*
59 * State structure for the POLLED switch off
60 */
61typedef struct uhci_polled {
62	/*
63	 * Pointer to the uhcip structure for the device that is to  be
64	 * used as input in polled mode.
65	 */
66	uhci_state_t *uhci_polled_uhcip;
67
68	/*
69	 * Pipe handle for the pipe that is to be used as input device
70	 * in POLLED mode.
71	 */
72	usba_pipe_handle_data_t  *uhci_polled_ph;
73
74	/* Interrupt Endpoint descriptor */
75	queue_head_t		*uhci_polled_qh;
76
77	/* Transfer descriptor for polling the device */
78	uhci_td_t		*uhci_polled_td;
79	/*
80	 * The buffer that the usb scancodes are copied into.
81	 */
82	uchar_t			*uhci_polled_buf;
83
84	/*
85	 * This flag is used to determine if the state of the controller
86	 * has already been saved (enter) or doesn't need to be restored
87	 * yet (exit).
88	 */
89	uint_t			uhci_polled_flags;
90	ushort_t		uhci_polled_entry;
91} uhci_polled_t;
92
93_NOTE(SCHEME_PROTECTS_DATA("Only accessed in POLLED mode",
94	uhci_polled_t::uhci_polled_flags))
95_NOTE(DATA_READABLE_WITHOUT_LOCK(uhci_polled_t::uhci_polled_uhcip))
96_NOTE(SCHEME_PROTECTS_DATA("Only accessed in POLLED mode",
97	uhci_polled_t::uhci_polled_entry))
98
99/*
100 * POLLED entry points
101 *	These functions are entry points into the POLLED code.
102 */
103int	uhci_hcdi_polled_input_init(usba_pipe_handle_data_t *, uchar_t **,
104	    usb_console_info_impl_t *);
105int	uhci_hcdi_polled_input_fini(usb_console_info_impl_t *);
106int	uhci_hcdi_polled_input_enter(usb_console_info_impl_t *);
107int	uhci_hcdi_polled_input_exit(usb_console_info_impl_t *);
108int	uhci_hcdi_polled_read(usb_console_info_impl_t *, uint_t *);
109int	uhci_hcdi_polled_output_init(usba_pipe_handle_data_t *,
110	    usb_console_info_impl_t *);
111int	uhci_hcdi_polled_output_fini(usb_console_info_impl_t *);
112int	uhci_hcdi_polled_output_enter(usb_console_info_impl_t *);
113int	uhci_hcdi_polled_output_exit(usb_console_info_impl_t *);
114int	uhci_hcdi_polled_write(usb_console_info_impl_t *, uchar_t *,
115	    uint_t, uint_t *);
116
117/*
118 * External Function Prototypes:
119 * These routines are only called from the init and fini functions.
120 * They are allowed to acquire locks.
121 */
122extern uhci_state_t	*uhci_obtain_state(dev_info_t *);
123extern queue_head_t	*uhci_alloc_queue_head(uhci_state_t *);
124extern void		uhci_free_tw(uhci_state_t *, uhci_trans_wrapper_t *);
125
126#ifdef	__cplusplus
127}
128#endif
129
130#endif	/* _SYS_USB_UHCI_POLLED_H */
131