xref: /linux/drivers/scsi/aic7xxx/aicasm/aicasm_insformat.h (revision e5451c8f8330e03ad3cfa16048b4daf961af434f)
1 /*
2  * Instruction formats for the sequencer program downloaded to
3  * Aic7xxx SCSI host adapters
4  *
5  * Copyright (c) 1997, 1998, 2000 Justin T. Gibbs.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions, and the following disclaimer,
13  *    without modification.
14  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
15  *    substantially similar to the "NO WARRANTY" disclaimer below
16  *    ("Disclaimer") and any redistribution must be conditioned upon
17  *    including a substantially similar Disclaimer requirement for further
18  *    binary redistribution.
19  * 3. Neither the names of the above-listed copyright holders nor the names
20  *    of any contributors may be used to endorse or promote products derived
21  *    from this software without specific prior written permission.
22  *
23  * Alternatively, this software may be distributed under the terms of the
24  * GNU General Public License ("GPL") version 2 as published by the Free
25  * Software Foundation.
26  *
27  * NO WARRANTY
28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
36  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
37  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38  * POSSIBILITY OF SUCH DAMAGES.
39  *
40  * $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_insformat.h#12 $
41  *
42  * $FreeBSD$
43  */
44 
45 #include <asm/byteorder.h>
46 
47 /* 8bit ALU logic operations */
48 struct ins_format1 {
49 #ifdef __LITTLE_ENDIAN
50 	uint32_t	immediate	: 8,
51 			source		: 9,
52 			destination	: 9,
53 			ret		: 1,
54 			opcode		: 4,
55 			parity		: 1;
56 #else
57 	uint32_t	parity		: 1,
58 			opcode		: 4,
59 			ret		: 1,
60 			destination	: 9,
61 			source		: 9,
62 			immediate	: 8;
63 #endif
64 };
65 
66 /* 8bit ALU shift/rotate operations */
67 struct ins_format2 {
68 #ifdef __LITTLE_ENDIAN
69 	uint32_t	shift_control	: 8,
70 			source		: 9,
71 			destination	: 9,
72 			ret		: 1,
73 			opcode		: 4,
74 			parity		: 1;
75 #else
76 	uint32_t	parity		: 1,
77 			opcode		: 4,
78 			ret		: 1,
79 			destination	: 9,
80 			source		: 9,
81 			shift_control	: 8;
82 #endif
83 };
84 
85 /* 8bit branch control operations */
86 struct ins_format3 {
87 #ifdef __LITTLE_ENDIAN
88 	uint32_t	immediate	: 8,
89 			source		: 9,
90 			address		: 10,
91 			opcode		: 4,
92 			parity		: 1;
93 #else
94 	uint32_t	parity		: 1,
95 			opcode		: 4,
96 			address		: 10,
97 			source		: 9,
98 			immediate	: 8;
99 #endif
100 };
101 
102 /* 16bit ALU logic operations */
103 struct ins_format4 {
104 #ifdef __LITTLE_ENDIAN
105 	uint32_t	opcode_ext	: 8,
106 			source		: 9,
107 			destination	: 9,
108 			ret		: 1,
109 			opcode		: 4,
110 			parity		: 1;
111 #else
112 	uint32_t	parity		: 1,
113 			opcode		: 4,
114 			ret		: 1,
115 			destination	: 9,
116 			source		: 9,
117 			opcode_ext	: 8;
118 #endif
119 };
120 
121 /* 16bit branch control operations */
122 struct ins_format5 {
123 #ifdef __LITTLE_ENDIAN
124 	uint32_t	opcode_ext	: 8,
125 			source		: 9,
126 			address		: 10,
127 			opcode		: 4,
128 			parity		: 1;
129 #else
130 	uint32_t	parity		: 1,
131 			opcode		: 4,
132 			address		: 10,
133 			source		: 9,
134 			opcode_ext	: 8;
135 #endif
136 };
137 
138 /*  Far branch operations */
139 struct ins_format6 {
140 #ifdef __LITTLE_ENDIAN
141 	uint32_t	page		: 3,
142 			opcode_ext	: 5,
143 			source		: 9,
144 			address		: 10,
145 			opcode		: 4,
146 			parity		: 1;
147 #else
148 	uint32_t	parity		: 1,
149 			opcode		: 4,
150 			address		: 10,
151 			source		: 9,
152 			opcode_ext	: 5,
153 			page		: 3;
154 #endif
155 };
156 
157 union ins_formats {
158 		struct ins_format1 format1;
159 		struct ins_format2 format2;
160 		struct ins_format3 format3;
161 		struct ins_format4 format4;
162 		struct ins_format5 format5;
163 		struct ins_format6 format6;
164 		uint8_t		   bytes[4];
165 		uint32_t	   integer;
166 };
167 struct instruction {
168 	union	ins_formats format;
169 	u_int	srcline;
170 	struct symbol *patch_label;
171 	STAILQ_ENTRY(instruction) links;
172 };
173 
174 #define	AIC_OP_OR	0x0
175 #define	AIC_OP_AND	0x1
176 #define AIC_OP_XOR	0x2
177 #define	AIC_OP_ADD	0x3
178 #define	AIC_OP_ADC	0x4
179 #define	AIC_OP_ROL	0x5
180 #define	AIC_OP_BMOV	0x6
181 
182 #define	AIC_OP_MVI16	0x7
183 
184 #define	AIC_OP_JMP	0x8
185 #define AIC_OP_JC	0x9
186 #define AIC_OP_JNC	0xa
187 #define AIC_OP_CALL	0xb
188 #define	AIC_OP_JNE	0xc
189 #define	AIC_OP_JNZ	0xd
190 #define	AIC_OP_JE	0xe
191 #define	AIC_OP_JZ	0xf
192 
193 /* Pseudo Ops */
194 #define	AIC_OP_SHL	0x10
195 #define	AIC_OP_SHR	0x20
196 #define	AIC_OP_ROR	0x30
197 
198 /* 16bit Ops. Low byte main opcode.  High byte extended opcode. */
199 #define	AIC_OP_OR16	0x8005
200 #define	AIC_OP_AND16	0x8105
201 #define	AIC_OP_XOR16	0x8205
202 #define	AIC_OP_ADD16	0x8305
203 #define	AIC_OP_ADC16	0x8405
204 #define AIC_OP_JNE16	0x8805
205 #define AIC_OP_JNZ16	0x8905
206 #define AIC_OP_JE16	0x8C05
207 #define AIC_OP_JZ16	0x8B05
208 #define AIC_OP_JMP16	0x9005
209 #define AIC_OP_JC16	0x9105
210 #define AIC_OP_JNC16	0x9205
211 #define AIC_OP_CALL16	0x9305
212 
213 /* Page extension is low three bits of second opcode byte. */
214 #define AIC_OP_JMPF	0xA005
215 #define AIC_OP_CALLF	0xB005
216 #define AIC_OP_JCF	0xC005
217 #define AIC_OP_JNCF	0xD005
218 #define AIC_OP_CMPXCHG	0xE005
219