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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* $OpenBSD: xyreg.h,v 1.5 2014/07/11 16:35:40 jsg Exp $ */
/* $NetBSD: xyreg.h,v 1.3 1996/03/31 22:39:02 pk Exp $ */
/*
* Copyright (c) 1995 Charles D. Cranor
* 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 ``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.
*/
/*
* x y r e g . h
*
* this file contains the description of the Xylogics 450/451's hardware
* data structures.
*
* author: Chuck Cranor <chuck@ccrc.wustl.edu>
*/
#define XYC_MAXDEV 2 /* max devices per controller */
#define XYC_CTLIOPB XYC_MAXDEV /* controller's iopb */
#define XYC_RESETUSEC 1000000 /* max time for xyc reset (same as xdc?) */
#define XYC_MAXIOPB (XYC_MAXDEV+1)
/* max number of iopbs that can be active */
#define XYC_MAXTIME 4*1000000 /* four seconds before we give up and reset */
#define XYC_MAXTRIES 4 /* max number of times to retry an operation */
#define XYC_INTERLEAVE 1 /* interleave (from disk label?) */
#define XYFM_BPS 0x200 /* must be 512! */
/*
* xyc device interface
* (lives in VME address space) [note: bytes are swapped!]
*/
struct xyc {
volatile u_char xyc_reloc_hi; /* iopb relocation (low byte) */
volatile u_char xyc_reloc_lo; /* iopb relocation (high byte) */
volatile u_char xyc_addr_hi; /* iopb address (low byte) */
volatile u_char xyc_addr_lo; /* iopb address (high byte) */
volatile u_char xyc_rsetup; /* reset/update reg */
volatile u_char xyc_csr; /* control and status register */
};
/*
* xyc_csr
*/
#define XYC_GBSY 0x80 /* go/busy */
#define XYC_ERR 0x40 /* error */
#define XYC_DERR 0x20 /* double error! */
#define XYC_IPND 0x10 /* interrupt pending */
#define XYC_ADRM 0x08 /* 24-bit addressing */
#define XYC_AREQ 0x04 /* attention request */
#define XYC_AACK 0x02 /* attention ack. */
#define XYC_DRDY 0x01 /* drive ready */
/*
* Input/Output Parameter Block (iopb)
*
* all controller commands are done via iopb's. to start a command you
* must do this:
* [1] allocate space in DVMA space for the iopb
* [2] fill out all the fields of the iopb
* [3] if the controller isn't busy, start the iopb by loading the address
* and reloc in the xyc's registers and setting the "go" bit [done]
* [4] controller busy: set AREQ bit, and wait for AACK bit.
* add iopb to the chain, and clear AREQ to resume I/O
*
* when the controller is done with a command it may interrupt (if you
* ask it to) and it will set the XYC_IPND bit in the csr. clear
* the interrupt by writing one to this bit.
*
* the format of the iopb is described in section 2.4 of the manual.
* note that it is byte-swapped on the sun.
*/
struct xy_iopb {
/* section 2.4.2: byte 1 */
volatile u_char resv1:1; /* reserved */
volatile u_char iei:1; /* interrupt on each IOPB done */
volatile u_char ierr:1; /* interrupt on error (no effect on 450) */
volatile u_char hdp:1; /* hold dual port drive */
volatile u_char asr:1; /* autoseek retry */
volatile u_char eef:1; /* enable extended fn. (overlap seek) */
volatile u_char ecm:2; /* ECC correction mode */
#define XY_ECM 2 /* use mode 2 (see section 2.4.2) */
/* section 2.4.1: byte 0 */
volatile u_char aud:1; /* auto-update iopb */
volatile u_char relo:1; /* enable multibus relocation (>16bit addrs)*/
volatile u_char chen:1; /* chain enable, "next iopb" is valid */
volatile u_char ien:1; /* interrupt enable */
volatile u_char com:4; /* command */
#define XYCMD_NOP 0x0 /* no-op */
#define XYCMD_WR 0x1 /* write */
#define XYCMD_RD 0x2 /* read */
#define XYCMD_WTH 0x3 /* write track headers */
#define XYCMD_RTH 0x4 /* read track headers */
#define XYCMD_SK 0x5 /* seek */
#define XYCMD_RST 0x6 /* drive reset */
#define XYCMD_WFM 0x7 /* write format */
#define XYCMD_RDH 0x8 /* read header, data, and ECC */
#define XYCMD_RDS 0x9 /* read drive status */
#define XYCMD_WRH 0xa /* write header, data, and ECC */
#define XYCMD_SDS 0xb /* set drive size */
#define XYCMD_ST 0xc /* self test */
#define XYCMD_R 0xd /* reserved */
#define XYCMD_MBL 0xe /* maint. buffer load */
#define XYCMD_MBD 0xf /* main. buffer dump */
/* section 2.4.4: byte 3 */
volatile u_char errno; /* error or completion code */
/* section 2.4.3: byte 2 */
volatile u_char errs:1; /* error summary bit */
volatile u_char resv2:2; /* reserved */
volatile u_char ctyp:3; /* controller type */
#define XYCT_450 1 /* the 450 controller */
volatile u_char resv3:1; /* reserved */
volatile u_char done:1; /* done! */
/* section 2.4.6: byte 5 */
volatile u_char dt:2; /* drive type */
#define XYC_MAXDT 3 /* largest drive type possible */
volatile u_char resv4:4; /* reserved */
volatile u_char unit:2; /* unit # */
/* section 2.4.5: byte 4 */
volatile u_char bw:1; /* byte(1)/word(0) xfer size */
volatile u_char intlv:4; /* interleave factor (0=1:1, 1=2:1, etc.) */
volatile u_char thro:3; /* dma throttle (0=2,1=4,2=8, etc...) */
#define XY_THRO 4 /* 4 == 32 dma cycles */
/* section 2.4.8: byte 7 */
volatile u_char sect; /* sector # */
/* section 2.4.7: byte 6 */
volatile u_char head; /* head # */
/* section 2.4.9: byte 8,9 */
volatile u_short cyl; /* cyl # */
/* section 2.4.10: byte a,b */
volatile u_short scnt; /* sector count, also drive status */
#define xy_dr_status scnt
#define XYS_ONCL 0x80 /* on-cylinder (active LOW) */
#define XYS_DRDY 0x40 /* drive ready (active LOW) */
#define XYS_WRPT 0x20 /* write protect */
#define XYS_DPB 0x10 /* dual-port busy */
#define XYS_SKER 0x08 /* hard seek error */
#define XYS_DFLT 0x04 /* disk fault */
/* section 2.4.11: byte c,d */
volatile u_short dataa; /* data address */
/* section 2.4.12: byte e,f */
volatile u_short datar; /* data relocation pointer */
/* section 2.4.14: byte 11 */
volatile u_char subfn; /* sub-function */
/* section 2.4.13: byte 10 */
volatile u_char hoff; /* head offset for fixed/removable drives */
/* section 2.4.15: byte 12,13 */
volatile u_short nxtiopb; /* next iopb address (same relocation) */
/* section 2.4.16: byte 14,15 */
volatile u_short eccpat; /* ecc pattern */
/* section 2.4.17: byte 16,17 */
volatile u_short eccaddr; /* ecc address */
};
/*
* errors (section 2.4.4.1)
*/
/* software error codes */
#define XY_ERR_FAIL 0xff /* general total failure */
#define XY_ERR_DERR 0xfe /* double error */
/* no error */
#define XY_ERR_AOK 0x00 /* success */
#define XY_ERR_IPEN 0x01 /* interrupt pending */
#define XY_ERR_BCFL 0x03 /* busy conflict */
#define XY_ERR_TIMO 0x04 /* operation timeout */
#define XY_ERR_NHDR 0x05 /* header not found */
#define XY_ERR_HARD 0x06 /* hard ECC error */
#define XY_ERR_ICYL 0x07 /* illegal cylinder address */
#define XY_ERR_ISEC 0x0a /* illegal sector address */
#define XY_ERR_SMAL 0x0d /* last sector too small */
#define XY_ERR_SACK 0x0e /* slave ACK error (non-existent memory) */
#define XY_ERR_CHER 0x12 /* cylinder and head/header error */
#define XY_ERR_SRTR 0x13 /* auto-seek retry successful */
#define XY_ERR_WPRO 0x14 /* write-protect error */
#define XY_ERR_UIMP 0x15 /* unimplemented command */
#define XY_ERR_DNRY 0x16 /* drive not ready */
#define XY_ERR_SZER 0x17 /* sector count zero */
#define XY_ERR_DFLT 0x18 /* drive faulted */
#define XY_ERR_ISSZ 0x19 /* illegal sector size */
#define XY_ERR_SLTA 0x1a /* self test a */
#define XY_ERR_SLTB 0x1b /* self test b */
#define XY_ERR_SLTC 0x1c /* self test c */
#define XY_ERR_SOFT 0x1e /* soft ECC error */
#define XY_ERR_SFOK 0x1f /* soft ECC error recovered */
#define XY_ERR_IHED 0x20 /* illegal head */
#define XY_ERR_DSEQ 0x21 /* disk sequencer error */
#define XY_ERR_SEEK 0x25 /* seek error */
/* error actions */
#define XY_ERA_PROG 0x10 /* program error: quit */
#define XY_ERA_SOFT 0x30 /* soft error: we recovered */
#define XY_ERA_HARD 0x40 /* hard error: retry */
#define XY_ERA_RSET 0x60 /* hard error: reset, then retry */
#define XY_ERA_WPRO 0x90 /* write protected */
|
