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
|
/* $NetBSD: bhavar.h,v 1.25 2012/10/27 17:18:19 chs Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
* Simulation Facility, NASA Ames Research Center.
*
* 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 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.
*/
#ifndef _DEV_IC_BHAVAR_H_
#define _DEV_IC_BHAVAR_H_
#include <sys/queue.h>
/* XXX adjust hash for large numbers of CCBs */
#define CCB_HASH_SIZE 32 /* hash table size for phystokv */
#define CCB_HASH_SHIFT 9
#define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
/*
* A CCB allocation group. Each group is a page size. We can find
* the allocation group for a CCB by truncating the CCB address to
* a page boundary, and the offset from the group's DMA mapping
* by taking the offset of the CCB into the page.
*/
#define BHA_CCBS_PER_GROUP ((PAGE_SIZE - sizeof(bus_dmamap_t)) / \
sizeof(struct bha_ccb))
struct bha_ccb_group {
bus_dmamap_t bcg_dmamap;
struct bha_ccb bcg_ccbs[1]; /* determined at run-time */
};
#define BHA_CCB_GROUP(ccb) \
(struct bha_ccb_group *)(trunc_page((vaddr_t)ccb))
#define BHA_CCB_OFFSET(ccb) ((vaddr_t)(ccb) & PAGE_MASK)
#define BHA_CCB_SYNC(sc, ccb, ops) \
do { \
struct bha_ccb_group *bcg = BHA_CCB_GROUP((ccb)); \
\
bus_dmamap_sync((sc)->sc_dmat, bcg->bcg_dmamap, \
BHA_CCB_OFFSET(ccb), sizeof(struct bha_ccb), (ops)); \
} while (0)
/*
* Offset in the DMA mapping for mailboxes.
* Since all mailboxes are allocated on a single DMA'able memory
* due to the hardware limitation, an offset of any mailboxes can be
* calculated using same expression.
*/
#define BHA_MBX_OFFSET(sc, mbx) ((u_long)(mbx) - (u_long)(sc)->sc_mbo)
#define BHA_MBI_SYNC(sc, mbi, ops) \
do { \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \
BHA_MBX_OFFSET((sc), (mbi)), sizeof(struct bha_mbx_in), (ops)); \
} while (0)
#define BHA_MBO_SYNC(sc, mbo, ops) \
do { \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \
BHA_MBX_OFFSET((sc), (mbo)), sizeof(struct bha_mbx_out), (ops)); \
} while (0)
struct bha_softc {
device_t sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
bus_dma_tag_t sc_dmat;
bus_dmamap_t sc_dmamap_mbox; /* maps the mailboxes */
int sc_dmaflags; /* bus-specific dma map flags */
void *sc_ih;
int sc_scsi_id; /* host adapter SCSI ID */
int sc_flags;
#define BHAF_WIDE 0x01 /* device is wide */
#define BHAF_DIFFERENTIAL 0x02 /* device is differential */
#define BHAF_ULTRA 0x04 /* device is ultra-scsi */
#define BHAF_TAGGED_QUEUEING 0x08 /* device supports tagged queueing */
#define BHAF_WIDE_LUN 0x10 /* device supported wide lun CCBs */
#define BHAF_STRICT_ROUND_ROBIN 0x20 /* device supports strict RR mode */
int sc_max_dmaseg; /* maximum number of DMA segments */
int sc_max_ccbs; /* maximum number of CCBs (HW) */
int sc_cur_ccbs; /* current number of CCBs */
int sc_disc_mask; /* mask of targets allowing discnnct */
int sc_ultra_mask; /* mask of targets allowing ultra */
int sc_fast_mask; /* mask of targets allowing fast */
int sc_sync_mask; /* mask of targets allowing sync */
int sc_wide_mask; /* mask of targets allowing wide */
int sc_tag_mask; /* mask of targets allowing t/q'ing */
/*
* In and Out mailboxes.
*/
struct bha_mbx_out *sc_mbo;
struct bha_mbx_in *sc_mbi;
struct bha_mbx_out *sc_cmbo; /* Collection Mail Box out */
struct bha_mbx_out *sc_tmbo; /* Target Mail Box out */
int sc_mbox_count; /* number of mailboxes */
int sc_mbofull; /* number of full Mail Box Out */
struct bha_mbx_in *sc_tmbi; /* Target Mail Box in */
struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE];
TAILQ_HEAD(, bha_ccb) sc_free_ccb,
sc_waiting_ccb,
sc_allocating_ccbs;
struct scsipi_adapter sc_adapter;
struct scsipi_channel sc_channel;
char sc_model[7],
sc_firmware[6];
};
struct bha_probe_data {
int sc_irq, sc_drq;
};
int bha_find(bus_space_tag_t, bus_space_handle_t);
int bha_inquire_config(bus_space_tag_t, bus_space_handle_t,
struct bha_probe_data *);
void bha_attach(struct bha_softc *);
int bha_info(struct bha_softc *);
int bha_intr(void *);
int bha_disable_isacompat(struct bha_softc *);
int bha_probe_inquiry(bus_space_tag_t, bus_space_handle_t,
struct bha_probe_data *);
#endif /* _DEV_IC_BHAVAR_H_ */
|