1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* $NetBSD: uhcivar.h,v 1.5 1998/12/26 12:53:02 augustss Exp $ */
/* $FreeBSD$ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (augustss@carlstedt.se) at
* Carlstedt Research & Technology.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* The framelist:
*
* To avoid having 1024 TDs for each isochronous transfer we introduce
* a virtual frame list. Every UHCI_VFRAMELIST_COUNT'th entry in the real
* frame list points to a non-active TD. This TD is
* UHCI_FRAMELIST_COUNT/UHCI_VFRAMELIST_COUNT times the start of the
* virtual frame list for a queue of isochroneous transfers.
*
* The last isochroneous transfer in the list points to a QH for the
* interrupt transfer in that timeslot. The QHs for interrupt transfers
* all point to the single QH for control transfers, which in turn
* points at the QH for control transfers.
*
* UHCI_VFRAMELIST_COUNT should be a power of 2 and UHCI_FRAMELIST_COUNT
* should be a multiple of UHCI_VFRAMELIST_COUNT.
*/
#define UHCI_VFRAMELIST_COUNT 128
typedef struct uhci_soft_qh uhci_soft_qh_t;
typedef struct uhci_soft_td uhci_soft_td_t;
/*
* An interrupt info struct contains the information needed to
* execute a requested routine when the controller generates an
* interrupt. Since we cannot know which transfer generated
* the interrupt all structs are linked together so they can be
* searched at interrupt time.
*/
typedef struct uhci_intr_info {
struct uhci_softc *sc;
usbd_request_handle reqh;
uhci_soft_td_t *stdstart;
uhci_soft_td_t *stdend;
LIST_ENTRY(uhci_intr_info) list;
#if defined(__FreeBSD__)
struct callout_handle timeout_handle;
#endif /* defined(__FreeBSD__) */
#ifdef DIAGNOSTIC
int isdone;
#endif
} uhci_intr_info_t;
/*
* Extra information that we need for a TD.
*/
struct uhci_soft_td {
uhci_td_t *td; /* The real TD */
uhci_physaddr_t physaddr; /* and its physical address. */
};
#define UHCI_TD_CHUNK 128 /*(PAGE_SIZE / UHCI_TD_SIZE)*/
/*
* Extra information that we need for a QH.
*/
struct uhci_soft_qh {
uhci_qh_t *qh; /* The real QH */
uhci_physaddr_t physaddr; /* and its physical address. */
int pos; /* Timeslot position */
uhci_intr_info_t *intr_info; /* Who to call on completion. */
};
#define UHCI_QH_CHUNK 128 /*(PAGE_SIZE / UHCI_QH_SIZE)*/
/* Only used for buffer free list. */
struct uhci_buffer {
struct uhci_buffer *next;
};
#define UHCI_BUFFER_SIZE 64
#define UHCI_BUFFER_CHUNK 64 /*(PAGE_SIZE / UHCI_BUFFER_SIZE)*/
/*
* Information about an entry in the virtial frame list.
*/
struct uhci_vframe {
uhci_soft_td_t *htd; /* pointer to dummy TD */
uhci_soft_td_t *etd; /* pointer to last TD */
uhci_soft_qh_t *hqh; /* pointer to dummy QH */
uhci_soft_qh_t *eqh; /* pointer to last QH */
u_int bandwidth; /* max bandwidth used by this frame */
};
typedef struct uhci_softc {
struct usbd_bus sc_bus; /* base device */
#if defined(__NetBSD__)
void *sc_ih; /* interrupt vectoring */
#endif
bus_space_tag_t iot;
bus_space_handle_t ioh;
#if defined(__NetBSD__)
bus_dma_tag_t sc_dmatag; /* DMA tag */
/* XXX should keep track of all DMA memory */
#endif
uhci_physaddr_t *sc_pframes;
struct uhci_vframe sc_vframes[UHCI_VFRAMELIST_COUNT];
uhci_soft_qh_t *sc_ctl_start; /* dummy QH for control */
uhci_soft_qh_t *sc_ctl_end; /* last control QH */
uhci_soft_qh_t *sc_bulk_start; /* dummy QH for bulk */
uhci_soft_qh_t *sc_bulk_end; /* last bulk transfer */
uhci_soft_td_t *sc_freetds;
uhci_soft_qh_t *sc_freeqhs;
struct uhci_buffer *sc_freebuffers;
u_int8_t sc_addr; /* device address */
u_int8_t sc_conf; /* device configuration */
char sc_isreset;
int sc_intrs;
LIST_HEAD(, uhci_intr_info) sc_intrhead;
/* Info for the root hub interrupt channel. */
int sc_ival;
char sc_vflock;
#define UHCI_HAS_LOCK 1
#define UHCI_WANT_LOCK 2
#if defined(__NetBSD__)
usb_dma_t *sc_mallocs;
#endif
char sc_vendor[16];
} uhci_softc_t;
usbd_status uhci_init __P((uhci_softc_t *));
int uhci_intr __P((void *));
#if 0
void uhci_reset __P((void *));
#endif
|
