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
|
/* $OpenBSD: vmevar.h,v 1.4 2010/04/21 19:33:47 miod Exp $ */
/*
* Copyright (c) 2006, 2007, Miodrag Vallat
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef _AVIION_VME_H_
#define _AVIION_VME_H_
typedef u_int32_t vme_addr_t;
/*
* VME address and data widths
*/
#define VME_A32 0x04 /* 100..000 */
#define VME_A24 0x03 /* 011..000 */
#define VME_A16 0x02 /* 010..000 */
#define VME_D32 0x04 /* 100..000 */
#define VME_D16 0x02 /* 010..000 */
#define VME_D8 0x01 /* 001..000 */
/*
* VME address range
*/
struct vme_range {
u_int vr_width;
vme_addr_t vr_start;
vme_addr_t vr_end;
paddr_t vr_base;
};
/*
* Attachment information for VME devices.
*
* Drivers are supposed to do their interrupt vector allocation
* themselves.
*/
struct vme_attach_args {
/* address locators */
vme_addr_t vaa_addr_a16;
vme_addr_t vaa_addr_a24;
vme_addr_t vaa_addr_a32;
/* interrupt level if specified */
u_int vaa_ipl;
};
/*
* There are 256 possible vectors for VME devices.
* One or more vectors may be allocated by vmeintr_allocate(), and then
* each vector is setup with vmeintr_establish(). Nothing is done to
* prevent the vector to be used in-between, so make sure no interrupt
* can occur between the vector allocation and the interrupt handler
* registration.
*/
#define NVMEINTR 256
extern intrhand_t vmeintr_handlers[NVMEINTR];
int vmeintr_allocate(u_int, int, int, u_int *);
#define VMEINTR_ANY 0x00 /* any vector will do */
#define VMEINTR_CONTIGUOUS 0x01 /* allocate a contiguous range */
#define VMEINTR_SHARED 0x00 /* sharing is ok */
#define VMEINTR_EXCLUSIVE 0x02 /* do not share this vector */
void vmeintr_disestablish(u_int, struct intrhand *);
int vmeintr_establish(u_int, struct intrhand *, const char *);
/*
* VME device drivers need to obtain their bus_space_tag_t with
* vmebus_get_bst(), specifying the address and data width to use for
* bus accesses.
* Resources associated to the tag can be released with vmebus_release_bst()
* when bus accesses are no longer necessary.
*/
int vmebus_get_bst(struct device *, u_int, u_int, bus_space_tag_t *);
void vmebus_release_bst(struct device *, bus_space_tag_t);
#endif /* _AVIION_VME_H_ */
|
