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1.1 root 1: /*
2: * This driver adapted from Drew Eckhardt's Trantor T128 driver
3: *
4: * Copyright 1993, Drew Eckhardt
5: * Visionary Computing
6: * (Unix and Linux consulting and custom programming)
7: * [email protected]
8: * +1 (303) 666-5836
9: *
10: * ( Based on T128 - DISTRIBUTION RELEASE 3. )
11: *
12: * Modified to work with the Pro Audio Spectrum/Studio 16
13: * by John Weidman.
14: *
15: *
16: * For more information, please consult
17: *
18: * Media Vision
19: * (510) 770-8600
20: * (800) 348-7116
21: *
22: * and
23: *
24: * NCR 5380 Family
25: * SCSI Protocol Controller
26: * Databook
27: *
28: * NCR Microelectronics
29: * 1635 Aeroplaza Drive
30: * Colorado Springs, CO 80916
31: * 1+ (719) 578-3400
32: * 1+ (800) 334-5454
33: */
34:
35:
36: #ifndef PAS16_H
37: #define PAS16_H
38:
39: #define PAS16_PUBLIC_RELEASE 3
40:
41: #define PDEBUG_INIT 0x1
42: #define PDEBUG_TRANSFER 0x2
43:
44: #define PAS16_DEFAULT_BASE_1 0x388
45: #define PAS16_DEFAULT_BASE_2 0x384
46: #define PAS16_DEFAULT_BASE_3 0x38c
47: #define PAS16_DEFAULT_BASE_4 0x288
48:
49: #define PAS16_DEFAULT_BOARD_1_IRQ 10
50: #define PAS16_DEFAULT_BOARD_2_IRQ 12
51: #define PAS16_DEFAULT_BOARD_3_IRQ 14
52: #define PAS16_DEFAULT_BOARD_4_IRQ 15
53:
54:
55: /*
56: * The Pro Audio Spectrum boards are I/O mapped. They use a Zilog 5380
57: * SCSI controller, which is the equivalent of NCR's 5380. "Pseudo-DMA"
58: * architecture is used, where a PAL drives the DMA signals on the 5380
59: * allowing fast, blind transfers with proper handshaking.
60: */
61:
62:
63: /* The Time-out Counter register is used to safe-guard against a stuck
64: * bus (in the case of RDY driven handshake) or a stuck byte (if 16-Bit
65: * DMA conversion is used). The counter uses a 28.224MHz clock
66: * divided by 14 as its clock source. In the case of a stuck byte in
67: * the holding register, an interrupt is generated (and mixed with the
68: * one with the drive) using the CD-ROM interrupt pointer.
69: */
70:
71: #define P_TIMEOUT_COUNTER_REG 0x4000
72: #define P_TC_DISABLE 0x80 /* Set to 0 to enable timeout int. */
73: /* Bits D6-D0 contain timeout count */
74:
75:
76: #define P_TIMEOUT_STATUS_REG_OFFSET 0x4001
77: #define P_TS_TIM 0x80 /* check timeout status */
78: /* Bits D6-D4 N/U */
79: #define P_TS_ARM_DRQ_INT 0x08 /* Arm DRQ Int. When set high,
80: * the next rising edge will
81: * cause a CD-ROM interrupt.
82: * When set low, the interrupt
83: * will be cleared. There is
84: * no status available for
85: * this interrupt.
86: */
87: #define P_TS_ENABLE_TO_ERR_INTERRUPT /* Enable timeout error int. */
88: #define P_TS_ENABLE_WAIT /* Enable Wait */
89:
90: #define P_TS_CT 0x01 /* clear timeout. Note: writing
91: * to this register clears the
92: * timeout error int. or status
93: */
94:
95:
96: /*
97: * The data register reads/writes to/from the 5380 in pseudo-DMA mode
98: */
99:
100: #define P_DATA_REG_OFFSET 0x5c00 /* rw */
101:
102: #define P_STATUS_REG_OFFSET 0x5c01 /* ro */
103: #define P_ST_RDY 0x80 /* 5380 DDRQ Status */
104:
105: #define P_IRQ_STATUS 0x5c03
106: #define P_IS_IRQ 0x80 /* DIRQ status */
107:
108: #define PCB_CONFIG 0x803
109: #define MASTER_ADDRESS_PTR 0x9a01 /* Fixed position - no relo */
110: #define SYS_CONFIG_4 0x8003
111: #define WAIT_STATE 0xbc00
112: #define OPERATION_MODE_1 0xec03
113: #define IO_CONFIG_3 0xf002
114:
115:
116: #ifndef ASM
117: int pas16_abort(Scsi_Cmnd *);
118: int pas16_biosparam(Disk *, kdev_t, int*);
119: int pas16_detect(Scsi_Host_Template *);
120: int pas16_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
121: int pas16_reset(Scsi_Cmnd *, unsigned int);
122: int pas16_proc_info (char *buffer ,char **start, off_t offset,
123: int length, int hostno, int inout);
124:
125: #ifndef NULL
126: #define NULL 0
127: #endif
128:
129: #ifndef CMD_PER_LUN
130: #define CMD_PER_LUN 2
131: #endif
132:
133: #ifndef CAN_QUEUE
134: #define CAN_QUEUE 32
135: #endif
136:
137: /*
138: * I hadn't thought of this with the earlier drivers - but to prevent
139: * macro definition conflicts, we shouldn't define all of the internal
140: * macros when this is being used solely for the host stub.
141: */
142:
143: #if defined(HOSTS_C) || defined(MODULE)
144:
145: #define MV_PAS16 {NULL, NULL, NULL, NULL, \
146: "Pro Audio Spectrum-16 SCSI", \
147: pas16_detect, NULL, NULL, \
148: NULL, pas16_queue_command, pas16_abort, pas16_reset, NULL, \
149: pas16_biosparam, \
150: /* can queue */ CAN_QUEUE, /* id */ 7, SG_ALL, \
151: /* cmd per lun */ CMD_PER_LUN , 0, 0, DISABLE_CLUSTERING}
152:
153: #endif
154: #ifndef HOSTS_C
155:
156: #define NCR5380_implementation_fields \
157: volatile unsigned short io_port
158:
159: #define NCR5380_local_declare() \
160: volatile unsigned short io_port
161:
162: #define NCR5380_setup(instance) \
163: io_port = (instance)->io_port
164:
165: #define PAS16_io_port(reg) ( io_port + pas16_offset[(reg)] )
166:
167: #if !(PDEBUG & PDEBUG_TRANSFER)
168: #define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
169: #define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
170: #else
171: #define NCR5380_read(reg) \
172: (((unsigned char) printk("scsi%d : read register %d at io_port %04x\n"\
173: , instance->hostno, (reg), PAS16_io_port(reg))), inb( PAS16_io_port(reg)) )
174:
175: #define NCR5380_write(reg, value) \
176: (printk("scsi%d : write %02x to register %d at io_port %04x\n", \
177: instance->hostno, (value), (reg), PAS16_io_port(reg)), \
178: outb( (value),PAS16_io_port(reg) ) )
179:
180: #endif
181:
182:
183: #define NCR5380_intr pas16_intr
184: #define NCR5380_queue_command pas16_queue_command
185: #define NCR5380_abort pas16_abort
186: #define NCR5380_reset pas16_reset
187: #define NCR5380_proc_info pas16_proc_info
188:
189: /* 15 14 12 10 7 5 3
190: 1101 0100 1010 1000 */
191:
192: #define PAS16_IRQS 0xd4a8
193:
194: #endif /* else def HOSTS_C */
195: #endif /* ndef ASM */
196: #endif /* PAS16_H */
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