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1.1 root 1: /* %M% %I% %E% */
2:
3: /*
4: * Tapemaster controller definitions.
5: */
6:
7: /*
8: * With 20-bit addressing, the intermediate buffer
9: * must be allocated early in startup().
10: */
11: #define CYMAXIO (64*1024) /* max i/o size + 1 */
12: char *cybuf;
13:
14: /* for byte swapping Multibus values */
15: #define htoms(x) (u_short)((((x)>>8)&0xff) | (((x)<<8)&0xff00))
16:
17: #define b_repcnt b_bcount
18: #define b_command b_resid
19:
20: /*
21: * System configuration pointer.
22: * Memory address is jumpered on controller.
23: */
24: struct cyscp {
25: char csp_buswidth; /* system bus width */
26: #define CSP_16BITS 1 /* 16-bit system bus */
27: #define CSP_8BITS 0 /* 8-bit system bus */
28: char csp_unused;
29: u_char csp_scb[4]; /* point to system config block */
30: };
31:
32: /*
33: * System configuration block
34: */
35: struct cyscb {
36: char csb_fixed; /* fixed value code (must be 3) */
37: char csb_unused; /* unused */
38: u_char csb_ccb[4]; /* pointer to channel control block */
39: };
40:
41: #define CSB_FIXED 0x3
42:
43: /*
44: * Channel control block definitions
45: */
46: struct cyccb {
47: char cbcw; /* channel control word */
48: char cbgate; /* tpb access gate */
49: u_char cbtpb[4]; /* first tape parameter block */
50: };
51:
52: #define GATE_OPEN (char)(0x00)
53: #define GATE_CLOSED (char)(0xff)
54:
55: #define CY_GO(addr) movob((addr), 0xff) /* channel attention */
56: #define CY_RESET(addr) movob((addr)+1, 0xff) /* software controller reset */
57:
58: #define CBCW_IE 0x11 /* interrupt on cmd completion */
59: #define CBCW_CLRINT 0x09 /* clear active interrupt */
60:
61: /*
62: * Tape parameter block definitions
63: */
64: struct cytpb {
65: u_long tpcmd; /* command, see below */
66: u_short tpcontrol; /* control word */
67: u_short tpcount; /* return count */
68: u_short tpsize; /* buffer size */
69: u_short tprec; /* records/overrun */
70: u_char tpdata[4]; /* pointer to source/dest */
71: u_short tpstatus; /* status */
72: u_char tplink[4]; /* pointer to next parameter block */
73: };
74:
75: /* control field bit definitions */
76: #define CYCW_UNIT (0x000c<<8) /* unit select mask, 2 bit field */
77: #define CYCW_IE (0x0020<<8) /* interrupt enable */
78: #define CYCW_LOCK (0x0080<<8) /* bus lock flag */
79: #define CYCW_REV (0x0400>>8) /* reverse flag */
80: #define CYCW_SPEED (0x0800>>8) /* speed/density */
81: #define CYCW_25IPS 0
82: #define CYCW_100IPS (0x0800>>8)
83: #define CYCW_WIDTH (0x8000>>8) /* width */
84: #define CYCW_8BITS 0
85: #define CYCW_16BITS (0x8000>>8)
86:
87: #define CYCW_BITS "\20\3REV\005100IPS\00716BITS\16IE\20LOCK"
88:
89: /*
90: * Controller commands
91: */
92:
93: /* control status/commands */
94: #define CY_CONFIG (0x00<<24) /* configure */
95: #define CY_NOP (0x20<<24) /* no operation */
96: #define CY_SETPAGE (0x08<<24) /* set page (addr bits 20-23) */
97: #define CY_SENSE (0x28<<24) /* drive status */
98: #define CY_CLRINT (0x9c<<24) /* clear Multibus interrupt */
99:
100: /* tape position commands */
101: #define CY_REW (0x34<<24) /* rewind tape */
102: #define CY_OFFL (0x38<<24) /* off_line and unload */
103: #define CY_WEOF (0x40<<24) /* write end-of-file mark */
104: #define CY_SFORW (0x70<<24) /* space record forward */
105: #define CY_SREV (CY_SFORW|CYCW_REV) /* space record backwards */
106: #define CY_FSF (0x44<<24) /* space file forward */
107: #define CY_BSF (CY_FSF|CYCW_REV) /* space file backwards */
108: #define CY_ERASE (0x4c<<24) /* erase record */
109:
110: /* data transfer commands */
111: #define CY_BRCOM (0x10<<24) /* read buffered */
112: #define CY_BWCOM (0x14<<24) /* write buffered */
113: #define CY_RCOM (0x2c<<24) /* read tape unbuffered */
114: #define CY_WCOM (0x30<<24) /* write tape unbuffered */
115:
116: /* status field bit definitions */
117: #define CYS_WP (0x0002<<8) /* write protected, no write ring */
118: #define CYS_BSY (0x0004<<8) /* formatter busy */
119: #define CYS_RDY (0x0008<<8) /* drive ready */
120: #define CYS_EOT (0x0010<<8) /* end of tape detected */
121: #define CYS_BOT (0x0020<<8) /* tape is at load point */
122: #define CYS_OL (0x0040<<8) /* drive on_line */
123: #define CYS_FM (0x0080<<8) /* filemark detected */
124: #define CYS_ERR (0x1f00>>8) /* error value mask */
125: #define CYS_CR (0x2000>>8) /* controller executed retries */
126: #define CYS_CC (0x4000>>8) /* command completed successfully */
127: #define CYS_CE (0x8000>>8) /* command execution has begun */
128:
129: #define CYS_BITS "\20\6CR\7CC\10CE\12WP\13BSY\14RDY\15EOT/BOT\16BOT\17OL\20FM"
130:
131: /* error codes for CYS_ERR */
132: #define CYER_TIMOUT 0x01 /* timed out data busy false */
133: #define CYER_TIMOUT1 0x02 /* data busy false,formatter,ready */
134: #define CYER_TIMOUT2 0x03 /* time out ready busy false */
135: #define CYER_TIMOUT3 0x04 /* time out ready busy true */
136: #define CYER_TIMOUT4 0x05 /* time out data busy true */
137: #define CYER_NXM 0x06 /* time out memory */
138: #define CYER_BLANK 0x07 /* blank tape */
139: #define CYER_DIAG 0x08 /* micro-diagnostic */
140: #define CYER_EOT 0x09 /* EOT forward, BOT rev. */
141: #define CYER_BOT 0x09 /* EOT forward, BOT rev. */
142: #define CYER_HERR 0x0a /* retry unsuccessful */
143: #define CYER_FIFO 0x0b /* FIFO over/under flow */
144: #define CYER_PARITY 0x0d /* drive to tapemaster parity error */
145: #define CYER_CKSUM 0x0e /* prom checksum */
146: #define CYER_STROBE 0x0f /* time out tape strobe */
147: #define CYER_NOTRDY 0x10 /* tape not ready */
148: #define CYER_PROT 0x11 /* write, no enable ring */
149: #define CYER_JUMPER 0x13 /* missing diagnostic jumper */
150: #define CYER_LINK 0x14 /* bad link, link inappropriate */
151: #define CYER_FM 0x15 /* unexpected filemark */
152: #define CYER_PARAM 0x16 /* bad parameter, byte count ? */
153: #define CYER_HDWERR 0x18 /* unidentified hardware error */
154: #define CYER_NOSTRM 0x19 /* streaming terminated */
155:
156: #ifdef CYERROR
157: char *cyerror[] = {
158: "no error",
159: "timeout",
160: "timeout1",
161: "timeout2",
162: "timeout3",
163: "timeout4",
164: "non-existent memory",
165: "blank tape",
166: "micro-diagnostic",
167: "eot/bot detected",
168: "retry unsuccessful",
169: "fifo over/under-flow",
170: "#0xc",
171: "drive to controller parity error",
172: "prom checksum",
173: "time out tape strobe (record length error)",
174: "tape not ready",
175: "write protected",
176: "#0x12",
177: "missing diagnostic jumper",
178: "invalid link pointer",
179: "unexpected file mark",
180: "invalid byte count/parameter",
181: "#0x17",
182: "unidentified hardware error",
183: "streaming terminated"
184: };
185: #define NCYERROR (sizeof (cyerror) / sizeof (cyerror[0]))
186: #endif
187:
188: /*
189: * Masks defining hard and soft errors (must check against 1<<CYER_code).
190: */
191: #define CYMASK(e) (1 << (e))
192: #define CYBIT(e) (1<<(CYER_/**/e))
193: #define CYER_HARD (CYBIT(TIMOUT)|CYBIT(TIMOUT1)|CYBIT(TIMOUT2)|\
194: CYBIT(TIMOUT3)|CYBIT(TIMOUT4)|CYBIT(NXM)|CYBIT(DIAG)|CYBIT(JUMPER)|\
195: CYBIT(STROBE)|CYBIT(PROT)|CYBIT(CKSUM)|CYBIT(HERR)|CYBIT(BLANK))
196: #define CYER_RSOFT (CYBIT(FIFO)|CYBIT(NOTRDY)|CYBIT(PARITY))
197: #define CYER_WSOFT (CYBIT(HERR)|CYBIT(FIFO)|CYBIT(NOTRDY)|CYBIT(PARITY))
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