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1 /*
2 * buslogic.h (C) 1993 David B. Gentzel
3 * Low-level scsi driver for BusLogic adapters
4 * by David B. Gentzel, Whitfield Software Services, Carnegie, PA
5 * (gentzel@nova.enet.dec.com)
6 * Thanks to BusLogic for providing the necessary documentation
7 *
8 * The original version of this driver was derived from aha1542.[ch] which
9 * is Copyright (C) 1992 Tommy Thorn. Much has been reworked, but most of
10 * basic structure and substantial chunks of code still remain.
11 */
12
13 #ifndef _BUSLOGIC_H
14
15 int buslogic_detect(Scsi_Host_Template *);
16 int buslogic_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
17 int buslogic_abort(Scsi_Cmnd *);
18 const char *buslogic_info(void);
19 int buslogic_reset(Scsi_Cmnd *);
20 int buslogic_biosparam(Disk *, int, int *);
21
22 #define BUSLOGIC_CMDLUN 1 /* Do not set this too high. It sucks
23 up lots of memory on ISA machines
24 with > 16MB because of the huge number of
25 bounce buffers that need to be allocated.
26 For boards that use non-ISA bus, we can
27 bump this in the board detect routine.
28 10/8/94 ERY */
29
30 #define BUSLOGIC { NULL, \
31 "BusLogic", \
32 buslogic_detect, \
33 NULL, \
34 buslogic_info, \
35 0, /* no command func */ \
36 buslogic_queuecommand, \
37 buslogic_abort, \
38 buslogic_reset, \
39 0, /* slave_attach NYI */ \
40 buslogic_biosparam, \
41 0, /* set by driver */ \
42 0, /* set by driver */ \
43 0, /* set by driver */ \
44 BUSLOGIC_CMDLUN, \
45 0, \
46 0, /* set by driver */ \
47 ENABLE_CLUSTERING \
48 }
49
50 #ifdef BUSLOGIC_PRIVATE_H
51
52 /* ??? These don't really belong here */
53 #ifndef TRUE
54 # define TRUE 1
55 #endif
56 #ifndef FALSE
57 # define FALSE 0
58 #endif
59
60 #define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr)[0])
61
62 #define PACKED __attribute__((packed))
63
64 #define BD_ABORT 0x0001
65 #define BD_COMMAND 0x0002
66 #define BD_DETECT 0x0004
67 #define BD_ERRORS 0x0008
68 #define BD_INTERRUPT 0x0010
69 #define BD_IO 0x0020
70 #define BD_RESET 0x0040
71 #define BD_UNDOCUMENTED 0x0080
72
73 /* I/O Port interface */
74 /* READ */
75 #define STATUS(base) (base)
76 #define DACT 0x80 /* Diagnostic Active */
77 #define DFAIL 0x40 /* Diagnostic Failure */
78 #define INREQ 0x20 /* Initialization Required */
79 #define HARDY 0x10 /* Host Adapter Ready */
80 #define CPRBSY 0x08 /* Command/Parameter Register Busy */
81 #define DIRRDY 0x04 /* Data In Register Ready */
82 /* 0x02 is reserved */
83 #define CMDINV 0x01 /* Command Invalid */
84
85 #define DATA_IN(base) (STATUS(base) + 1)
86
87 #define INTERRUPT(base) (STATUS(base) + 2)
88 #define INTV 0x80 /* Interrupt Valid */
89 /* 0x70 are reserved */
90 #define RSTS 0x08 /* SCSI Reset State */
91 #define CMDC 0x04 /* Command Complete */
92 #define MBOR 0x02 /* Mailbox Out Ready */
93 #define IMBL 0x01 /* Incoming Mailbox Loaded */
94 #define INTRMASK 0x8F
95
96 /* This undocumented port returns a bitmask indicating geometry translation. */
97 #define GEOMETRY(base) (STATUS(base) + 3)
98 #define GEO_GT_1GB 0x80 /* > 1GB under DOS geometry mapping */
99 /* 0x70 are unknown */
100 #define GEO_XLATION_S_D1 0x0C /* Disk 1 geometry ("S" models only) */
101 #define GEO_XLATION_S_D0 0x03 /* Disk 0 geometry ("S" models only) */
102
103
104 /* WRITE */
105 #define CONTROL(base) STATUS(base)
106 #define RHARD 0x80 /* Hard Reset */
107 #define RSOFT 0x40 /* Soft Reset */
108 #define RINT 0x20 /* Interrupt Reset */
109 #define RSBUS 0x10 /* SCSI Bus Reset */
110 /* 0x0F are reserved */
111
112 #define COMMAND_PARAMETER(base) (STATUS(base) + 1)
113 #define CMD_TSTCMDCINT 0x00 /* Test CMDC Interrupt */
114 #define CMD_INITMB 0x01 /* Initialize Mailbox */
115 #define CMD_START_SCSI 0x02 /* Start Mailbox */
116 #define CMD_START_BIOS 0x03 /* Start BIOS */
117 #define CMD_INQUIRY 0x04 /* Inquire Board ID */
118 #define CMD_ENBOMBRINT 0x05 /* Enable OMBR Interrupt */
119 #define CMD_SETSELTIMOUT 0x06 /* Set SCSI Selection Time-Out */
120 #define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */
121 #define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */
122 #define CMD_BUSXFR_RATE 0x09 /* Set Bus Transfer Rate */
123 #define CMD_INQ_DEVICES 0x0A /* Inquire Installed Devices */
124 #define CMD_RETCONF 0x0B /* Return Configuration */
125 #define CMD_TARGET_MODE 0x0C /* Set Target Mode */
126 #define CMD_INQ_SETUP_INFO 0x0D /* Inquire Set-up Information */
127 #define CMD_WRITE_LCL_RAM 0x1A /* Write Adapter Local RAM */
128 #define CMD_READ_LCL_RAM 0x1B /* Read Adapter Local RAM */
129 #define CMD_WRITE_BM_FIFO 0x1C /* Write Bus Master Chip FIFO */
130 #define CMD_READ_BM_FIFO 0x1D /* Read Bus Master Chip FIFO */
131 #define CMD_ECHO 0x1F /* Echo Data Byte */
132 #define CMD_HA_DIAG 0x20 /* Host Adapter Diagnostic */
133 #define CMD_HA_OPTIONS 0x21 /* Host Adapter Options */
134 #define CMD_INITEXTMB 0x81 /* Initialize Extended Mailbox */
135 #define CMD_VER_NO_LAST 0x84 /* Version Number Last Byte (undocumented) */
136 #define CMD_VER_NO_LETTER 0x85 /* Version Number One Letter (undocumented) */
137 #define CMD_RET_MODEL_NO 0x8B /* Return Model Number (undocumented) */
138 #define CMD_INQEXTSETUP 0x8D /* Inquire Extended Set-up Information */
139 #define CMD_ROUND_ROBIN 0x8F /* Enable strict vs. half-assed round-robin
140 mailbox filling (undocumented) */
141 #define CMD_READ_FW_LCL_RAM 0x91/* Read Firmware Local RAM (undocumented) */
142 #define CMD_WRITE_INQ_BUF 0x9A /* Write Inquiry Data Buffer
143 (Target Mode Only) */
144 #define CMD_READ_INQ_BUF 0x9B /* Read Inquiry Data Buffer
145 (Target Mode Only) */
146
147 #define MBX_NOT_IN_USE 0x00
148 #define MBX_ACTION_START 0x01
149 #define MBX_ACTION_ABORT 0x02
150 #define MBX_COMPLETION_OK 0x01
151 #define MBX_COMPLETION_ABORTED 0x02
152 #define MBX_COMPLETION_NOT_FOUND 0x03
153 #define MBX_COMPLETION_ERROR 0x04
154
155 /* Mailbox Definition */
156 struct mailbox {
157 void *ccbptr; /* lsb, ..., msb */
158 unsigned char btstat;
159 unsigned char sdstat;
160 unsigned char reserved;
161 unsigned char status; /* Command/Status */
162 };
163
164 /* This is used with scatter-gather */
165 struct chain {
166 unsigned long datalen; /* Size of this part of chain */
167 void *dataptr; /* Location of data */
168 };
169
170 #define MAX_CDB 12
171
172 struct ccb { /* Command Control Block */
173 unsigned char op; /* Command Control Block Operation Code */
174 unsigned char dir;
175 unsigned char cdblen; /* SCSI Command Length */
176 unsigned char rsalen; /* Request Sense Allocation Length/Disable */
177 unsigned long datalen; /* Data Length (msb, ..., lsb) */
178 void *dataptr; /* Data Pointer */
179 unsigned char reserved[2];
180 unsigned char hastat; /* Host Adapter Status (HASTAT) */
181 unsigned char tarstat; /* Target Device Status */
182 unsigned char id;
183 unsigned char lun;
184 unsigned char cdb[MAX_CDB];
185 unsigned char ccbcontrol;
186 unsigned char commlinkid; /* Command Linking Identifier */
187 void *linkptr; /* Link Pointer */
188 void *senseptr;
189 };
190
191 #define CCB_OP_INIT 0x00 /* Initiator CCB */
192 #define CCB_OP_TARG 0x01 /* Target CCB */
193 #define CCB_OP_INIT_SG 0x02 /* Initiator CCB with scatter-gather */
194 #define CCB_OP_INIT_R 0x03 /* Initiator CCB with residual data length
195 returned */
196 #define CCB_OP_INIT_SG_R 0x04 /* Initiator CCB with scatter-gather and
197 residual data length returned */
198 #define CCB_OP_BUS_RESET 0x81 /* SCSI bus device reset */
199
200 #endif
201
202 #endif
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*/