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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*-
* Copyright (c) 1999,2000 Jonathan Lemon
* All rights reserved.
*
* 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 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 AUTHOR 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.
*
* $FreeBSD$
*/
/*
* software structures for the Compaq RAID controller
*/
#ifndef _IDAVAR_H
#define _IDAVAR_H
#define ida_inb(ida, port) \
bus_space_read_1((ida)->tag, (ida)->bsh, port)
#define ida_inw(ida, port) \
bus_space_read_2((ida)->tag, (ida)->bsh, port)
#define ida_inl(ida, port) \
bus_space_read_4((ida)->tag, (ida)->bsh, port)
#define ida_outb(ida, port, val) \
bus_space_write_1((ida)->tag, (ida)->bsh, port, val)
#define ida_outw(ida, port, val) \
bus_space_write_2((ida)->tag, (ida)->bsh, port, val)
#define ida_outl(ida, port, val) \
bus_space_write_4((ida)->tag, (ida)->bsh, port, val)
struct ida_hdr {
u_int8_t drive; /* logical drive */
u_int8_t priority; /* block priority */
u_int16_t size; /* size of request, in words */
};
struct ida_req {
u_int16_t next; /* offset of next request */
u_int8_t command; /* command */
u_int8_t error; /* return error code */
u_int32_t blkno; /* block number */
u_int16_t bcount; /* block count */
u_int8_t sgcount; /* number of scatter/gather entries */
u_int8_t spare; /* reserved */
};
struct ida_sgb {
u_int32_t length; /* length of S/G segment */
u_int32_t addr; /* physical address of block */
};
#define IDA_NSEG 32 /* maximum number of segments */
/*
* right now, this structure totals 276 bytes.
*/
struct ida_hardware_qcb {
struct ida_hdr hdr; /* 4 */
struct ida_req req; /* 12 */
struct ida_sgb seg[IDA_NSEG]; /* 256 */
struct ida_qcb *qcb; /* 4 - qcb backpointer */
};
typedef enum {
QCB_FREE = 0x0000,
QCB_ACTIVE = 0x0001, /* waiting for completion */
} qcb_state;
#define DMA_DATA_IN 0x0001
#define DMA_DATA_OUT 0x0002
#define IDA_COMMAND 0x0004
#define DMA_DATA_TRANSFER (DMA_DATA_IN | DMA_DATA_OUT)
#define IDA_QCB_MAX 256
#define IDA_CONTROLLER 0 /* drive "number" for controller */
struct ida_qcb {
struct ida_hardware_qcb *hwqcb;
qcb_state state;
short flags;
union {
STAILQ_ENTRY(ida_qcb) stqe;
SLIST_ENTRY(ida_qcb) sle;
} link;
bus_dmamap_t dmamap;
bus_addr_t hwqcb_busaddr;
struct bio *buf; /* bio associated with qcb */
};
struct ida_softc;
struct ida_access {
int (*fifo_full)(struct ida_softc *);
void (*submit)(struct ida_softc *, struct ida_qcb *);
bus_addr_t (*done)(struct ida_softc *);
int (*int_pending)(struct ida_softc *);
void (*int_enable)(struct ida_softc *, int);
};
/*
* flags for the controller
*/
#define IDA_ATTACHED 0x01 /* attached, interrupts okay */
struct ida_softc {
device_t dev;
int unit;
int regs_res_type;
int regs_res_id;
struct resource *regs;
int irq_res_type;
struct resource *irq;
void *ih;
bus_space_tag_t tag;
bus_space_handle_t bsh;
/* various DMA tags */
bus_dma_tag_t parent_dmat;
bus_dma_tag_t buffer_dmat;
bus_dma_tag_t hwqcb_dmat;
bus_dmamap_t hwqcb_dmamap;
bus_addr_t hwqcb_busaddr;
bus_dma_tag_t sg_dmat;
int num_drives;
int num_qcbs;
int flags;
struct ida_hardware_qcb *hwqcbs; /* HW QCB array */
struct ida_qcb *qcbs; /* kernel QCB array */
SLIST_HEAD(, ida_qcb) free_qcbs;
STAILQ_HEAD(, ida_qcb) qcb_queue;
struct bio_queue_head bio_queue;
struct ida_access cmd;
};
/*
* drive flags
*/
#define DRV_WRITEPROT 0x0001
struct idad_softc {
device_t dev;
struct ida_softc *controller;
struct disk disk;
struct devstat stats;
int unit;
int cylinders;
int heads;
int sectors;
int secsize;
int secperunit;
int flags;
};
struct ida_board {
u_int32_t board;
char *desc;
struct ida_access *accessor;
};
extern int ida_detach(device_t dev);
extern struct ida_softc *ida_alloc(device_t dev, struct resource *regs,
int regs_type, int regs_id, bus_dma_tag_t parent_dmat);
extern void ida_free(struct ida_softc *ida);
extern int ida_init(struct ida_softc *ida);
extern void ida_attach(struct ida_softc *ida);
extern int ida_command(struct ida_softc *ida, int command, void *data,
int datasize, int drive, int flags);
extern void ida_submit_buf(struct ida_softc *ida, struct bio *bp);
extern void ida_intr(void *data);
extern void idad_intr(struct bio *bp);
#endif /* _IDAVAR_H */
|
