![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to t128.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GnuMach] / Gnu-Mach / linux / src / drivers / scsi|
Return to t128.h CVS log | Up to [GnuMach] / Gnu-Mach / linux / src / drivers / scsi |
1.1 root 1: /*
2: * Trantor T128/T128F/T228 defines
3: * Note : architecturally, the T100 and T128 are different and won't work
4: *
5: * Copyright 1993, Drew Eckhardt
6: * Visionary Computing
7: * (Unix and Linux consulting and custom programming)
8: * [email protected]
9: * +1 (303) 440-4894
10: *
11: * DISTRIBUTION RELEASE 3.
12: *
13: * For more information, please consult
14: *
15: * Trantor Systems, Ltd.
16: * T128/T128F/T228 SCSI Host Adapter
17: * Hardware Specifications
18: *
19: * Trantor Systems, Ltd.
20: * 5415 Randall Place
21: * Fremont, CA 94538
22: * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
23: *
24: * and
25: *
26: * NCR 5380 Family
27: * SCSI Protocol Controller
28: * Databook
29: *
30: * NCR Microelectronics
31: * 1635 Aeroplaza Drive
32: * Colorado Springs, CO 80916
33: * 1+ (719) 578-3400
34: * 1+ (800) 334-5454
35: */
36:
37: #ifndef T128_H
38: #define T128_H
39:
40: #define T128_PUBLIC_RELEASE 3
41:
42: #define TDEBUG_INIT 0x1
43: #define TDEBUG_TRANSFER 0x2
44:
45: /*
46: * The trantor boards are memory mapped. They use an NCR5380 or
47: * equivalent (my sample board had part second sourced from ZILOG).
48: * NCR's recommended "Pseudo-DMA" architecture is used, where
49: * a PAL drives the DMA signals on the 5380 allowing fast, blind
50: * transfers with proper handshaking.
51: */
52:
53: /*
54: * Note : a boot switch is provided for the purpose of informing the
55: * firmware to boot or not boot from attached SCSI devices. So, I imagine
56: * there are fewer people who've yanked the ROM like they do on the Seagate
57: * to make bootup faster, and I'll probably use this for autodetection.
58: */
59: #define T_ROM_OFFSET 0
60:
61: /*
62: * Note : my sample board *WAS NOT* populated with the SRAM, so this
63: * can't be used for autodetection without a ROM present.
64: */
65: #define T_RAM_OFFSET 0x1800
66:
67: /*
68: * All of the registers are allocated 32 bytes of address space, except
69: * for the data register (read/write to/from the 5380 in pseudo-DMA mode)
70: */
71: #define T_CONTROL_REG_OFFSET 0x1c00 /* rw */
72: #define T_CR_INT 0x10 /* Enable interrupts */
73: #define T_CR_CT 0x02 /* Reset watchdog timer */
74:
75: #define T_STATUS_REG_OFFSET 0x1c20 /* ro */
76: #define T_ST_BOOT 0x80 /* Boot switch */
77: #define T_ST_S3 0x40 /* User settable switches, */
78: #define T_ST_S2 0x20 /* read 0 when switch is on, 1 off */
79: #define T_ST_S1 0x10
80: #define T_ST_PS2 0x08 /* Set for Microchannel 228 */
81: #define T_ST_RDY 0x04 /* 5380 DRQ */
82: #define T_ST_TIM 0x02 /* indicates 40us watchdog timer fired */
83: #define T_ST_ZERO 0x01 /* Always zero */
84:
85: #define T_5380_OFFSET 0x1d00 /* 8 registers here, see NCR5380.h */
86:
87: #define T_DATA_REG_OFFSET 0x1e00 /* rw 512 bytes long */
88:
89: #ifndef ASM
90: int t128_abort(Scsi_Cmnd *);
91: int t128_biosparam(Disk *, kdev_t, int*);
92: int t128_detect(Scsi_Host_Template *);
93: int t128_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
94: int t128_reset(Scsi_Cmnd *, unsigned int reset_flags);
95: int t128_proc_info (char *buffer, char **start, off_t offset,
96: int length, int hostno, int inout);
97:
98: #ifndef NULL
99: #define NULL 0
100: #endif
101:
102: #ifndef CMD_PER_LUN
103: #define CMD_PER_LUN 2
104: #endif
105:
106: #ifndef CAN_QUEUE
107: #define CAN_QUEUE 32
108: #endif
109:
110: /*
111: * I hadn't thought of this with the earlier drivers - but to prevent
112: * macro definition conflicts, we shouldn't define all of the internal
113: * macros when this is being used solely for the host stub.
114: */
115:
116: #if defined(HOSTS_C) || defined(MODULE)
117:
118: #define TRANTOR_T128 {NULL, NULL, NULL, NULL, \
119: "Trantor T128/T128F/T228", t128_detect, NULL, \
120: NULL, \
121: NULL, t128_queue_command, t128_abort, t128_reset, NULL, \
122: t128_biosparam, \
123: /* can queue */ CAN_QUEUE, /* id */ 7, SG_ALL, \
124: /* cmd per lun */ CMD_PER_LUN , 0, 0, DISABLE_CLUSTERING}
125:
126: #endif
127:
128: #ifndef HOSTS_C
129:
130: #define NCR5380_implementation_fields \
131: volatile unsigned char *base
132:
133: #define NCR5380_local_declare() \
134: volatile unsigned char *base
135:
136: #define NCR5380_setup(instance) \
137: base = (volatile unsigned char *) (instance)->base
138:
139: #define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))
140:
141: #if !(TDEBUG & TDEBUG_TRANSFER)
142: #define NCR5380_read(reg) (*(T128_address(reg)))
143: #define NCR5380_write(reg, value) (*(T128_address(reg)) = (value))
144: #else
145: #define NCR5380_read(reg) \
146: (((unsigned char) printk("scsi%d : read register %d at address %08x\n"\
147: , instance->hostno, (reg), T128_address(reg))), *(T128_address(reg)))
148:
149: #define NCR5380_write(reg, value) { \
150: printk("scsi%d : write %02x to register %d at address %08x\n", \
151: instance->hostno, (value), (reg), T128_address(reg)); \
152: *(T128_address(reg)) = (value); \
153: }
154: #endif
155:
156: #define NCR5380_intr t128_intr
157: #define NCR5380_queue_command t128_queue_command
158: #define NCR5380_abort t128_abort
159: #define NCR5380_reset t128_reset
160: #define NCR5380_proc_info t128_proc_info
161:
162: /* 15 14 12 10 7 5 3
163: 1101 0100 1010 1000 */
164:
165: #define T128_IRQS 0xc4a8
166:
167: #endif /* else def HOSTS_C */
168: #endif /* ndef ASM */
169: #endif /* T128_H */
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.