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1.1 root 1: /***********************************************************************
2: * Module: haiscsi.h
3: *
4: * Constants and structures used to access SCSI devices through the
5: * SCSI Driver in a Host Adapter inspecific manner.
6: *
7: * Copyright (c) 1993, Christopher Sean Hilton, All rights reserved.
8: *
9: * Last Modified: Fri Jul 23 15:38:08 1993 by [chris]
10: *
11: */
12:
13: #ifndef __SYS_HAISCSI_H__
14: #define __SYS_HAISCSI_H__
15:
16: #define SCSIMAJOR 13
17:
18: #define MAXTID 7
19: #define MAXDEVS (MAXTID + 1)
20: #define MAXLUN 7
21: #define MAXUNITS (MAXLUN + 1)
22:
23: #define ST_GOOD 0x00 /* Status Good. */
24: #define ST_CHKCOND 0x02 /* Check Condition */
25: #define ST_CONDMET 0x04 /* Condition Met */
26: #define ST_BUSY 0x08 /* Busy */
27: #define ST_INTERM 0x10 /* Intermediate */
28: #define ST_INTCDMET 0x14 /* Intermediate Condtion Met */
29: #define ST_RESCONF 0x18 /* Reservation Conflict */
30: #define ST_COMTERM 0x22 /* Command Terminated */
31: #define ST_QFULL 0x28 /* Queue Full */
32:
33: #define ST_TIMEOUT 0x0101 /* Command Timed out */
34: #define ST_USRABRT 0x0102 /* User pressed ^C */
35: #define ST_DRVABRT 0x0103 /* Command Aborted by driver */
36: #define ST_HATMOUT 0x0201 /* Host adapter Timed out command */
37: #define ST_PENDING 0xffff /* Command Pending */
38:
39: #define DMAREAD 0x0001 /* Command Reads from SCSI device */
40: #define DMAWRITE 0x0002 /* Command Writes to SCSI device */
41:
42: #define SENSELEN 18
43:
44: #define PHYS_ADDR 0x0000 /* Physical Address - (who knows) */
45: #define KRNL_ADDR 0x0001 /* Kernal Address */
46: #define USER_ADDR 0x0002 /* User Address (Anything goes) */
47: #define SYSGLBL_ADDR 0x0003 /* System Global address (yeah) */
48:
49: /***** Minor Device Number Bits *****/
50:
51: #define SPECIAL 0x80 /* Special Bit to flag boot block / Tape */
52: #define TIDMASK 0x70
53: #define LUNMASK 0x0c
54: #define PARTMASK 0x03
55: #define TAPE 0x01
56: #define REWIND 0x02
57:
58: #pragma align 1
59:
60: typedef struct g0cmd_s *g0cmd_p;
61:
62: typedef struct g0cmd_s {
63: unsigned char opcode; /* From opcode Table */
64: unsigned char lun_lba; /* LUN and high part of LBA */
65: unsigned char lba_mid; /* LBA Middle. */
66: unsigned char lba_low; /* LBA Low. */
67: unsigned char xfr_len; /* Transfer Length */
68: unsigned char control; /* Control byte. */
69: } g0cmd_t;
70:
71: typedef struct g1cmd_s *g1cmd_p;
72:
73: typedef struct g1cmd_s {
74: unsigned char opcode; /* From opcode Table */
75: unsigned char lun; /* LUN */
76: unsigned long lba; /* LBA */
77: unsigned char pad1; /* Reserved */
78: unsigned short xfr_len; /* Transfer Length's MSB. */
79: unsigned char control; /* Control byte. */
80: } g1cmd_t;
81:
82: #define g2cmd_t g1cmd_t /* SCSI-2 Added Group 2 commands */
83: #define g2cmd_s g1cmd_s /* with the same size and layout as */
84: #define g2cmd_p g1cmd_p /* g1 commands. */
85:
86: typedef struct g5cmd_s *g5cmd_p;
87:
88: typedef struct g5cmd_s {
89: unsigned char opcode; /* From opcode Table */
90: unsigned char lun; /* LUN */
91: unsigned long lba; /* LBA's MSB */
92: unsigned char pad1[3]; /* Reserved */
93: unsigned short xfr_len; /* Transfer Length */
94: unsigned char control; /* Control byte. */
95: } g5cmd_t;
96:
97: typedef union cdb_u *cdb_p;
98:
99: typedef union cdb_u {
100: g0cmd_t g0;
101: g1cmd_t g1;
102: g5cmd_t g5;
103: } cdb_t;
104:
105: typedef struct sense_s *sense_p;
106:
107: typedef struct sense_s {
108: unsigned char errorcode; /* Error Code: 0x0? */
109: unsigned char lba_msb; /* LSB's MS 5 Bits */
110: unsigned char lba_mid; /* Middle 8 bits */
111: unsigned char lba_lsb; /* LS 8 Bits */
112: } sense_t;
113:
114: typedef struct extsense_s *extsense_p;
115:
116: typedef struct extsense_s {
117: unsigned char errorcode; /* Error Code (70H) */
118: unsigned char segmentnum; /* Number of current segment descriptor */
119: unsigned char sensekey; /* Sense Key(See bit definitions too) */
120: long info; /* Information MSB */
121: unsigned char addlen; /* Additional Sense Length */
122: unsigned char addbytes[1]; /* Additional Sense unsigned chars */
123: } extsense_t;
124:
125: #ifdef __KERNEL__
126: /***** Device Control Array *****/
127:
128: typedef struct dca_s *dca_p;
129:
130: typedef struct dca_s {
131: int (*d_open)(); /* open routine for device */
132: int (*d_close)(); /* close routine */
133: int (*d_block)(); /* Block request routine (Strategy) */
134: int (*d_read)(); /* Character Read routine */
135: int (*d_write)(); /* Character Write routine */
136: int (*d_ioctl)(); /* I/O Control routine */
137: int (*d_load)(); /* Load or Init routine */
138: int (*d_unload)(); /* Unload routine */
139: int (*d_poll)(); /* Poll routine */
140: } dca_t;
141:
142: typedef struct bufaddr_s *bufaddr_p;
143:
144: typedef struct bufaddr_s {
145: int space; /* Address space */
146: union {
147: paddr_t paddr; /* Physical Address */
148: caddr_t caddr; /* Virtual Address */
149: } addr;
150: size_t size; /* Size of buffer */
151: } bufaddr_t;
152:
153: typedef struct srb_s *srb_p; /* SCSI Request Block */
154:
155: typedef struct srb_s {
156: unsigned short status; /* SCSI Status Byte */
157: unsigned short hastat; /* Host Adapter Status Byte */
158: dev_t dev; /* Device number (major/minor) */
159: unsigned char target; /* Target ID */
160: unsigned char lun; /* Logical Unit Number */
161: unsigned short tries; /* Current tries */
162: unsigned short timeout; /* Seconds til timeout */
163: bufaddr_t buf; /* Buffer to use */
164: unsigned short xferdir; /* Transfer Direction */
165: int (*cleanup)(); /* Cleanup Function. */
166: cdb_t cdb; /* Command to execute */
167: char sensebuf[SENSELEN];
168: } srb_t;
169:
170: #pragma align
171:
172: #ifdef HA_MODULE
173: extern dca_p mdca[MAXDEVS];
174: #else
175: extern int hapresent;
176: #endif
177:
178: /***********************************************************************
179: * Host Adapter routines.
180: *
181: * These must be defined by the host adapter module. For each individual
182: * routine's functionality see the host adapter module aha154x.c.
183: */
184:
185: extern void hatimer();
186: extern void haintr();
187: extern int hainit();
188: extern int startscsi();
189: extern void abortscsi();
190: extern void resetdevice();
191: extern void haihdgeta();
192: extern void haihdseta();
193:
194: extern char iofailmsg[];
195: extern int HAI_HAID;
196:
197: #define bit(n) (1 << (n))
198: #define tid(d) (((d) & TIDMASK) >> 4)
199: #define lun(d) (((d) & LUNMASK) >> 2)
200: #define partn(d) (((d) & SPECIAL) ? 4 : ((d) & PARTMASK))
201:
202: char *swapbytes();
203: #define flip(o) swapbytes(&(o), sizeof(o))
204: int cpycdb();
205: void reqsense();
206: void doscsi();
207: void printsense();
208: int printerror();
209: void haiioctl();
210: void hainonblk();
211: #endif /* KERNEL */
212:
213: #endif /* !defined( __SYS_HAISCSI_H__ ) */
214:
215: /* End of file */
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