2 * Copyright (c) 1998 Nicolas Souchu
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 /* microsequence parameter descriptor */
37 #define MS_INS_MASK 0x00ff /* mask to retrieve the instruction position < 256 XXX */
38 #define MS_ARG_MASK 0x0f00 /* mask to retrieve the argument number */
39 #define MS_TYP_MASK 0xf000 /* mask to retrieve the type of the param */
41 /* offset of each mask (see above) */
42 #define MS_INS_OFFSET 0
43 #define MS_ARG_OFFSET 8
44 #define MS_TYP_OFFSET 12
46 /* list of parameter types */
47 #define MS_TYP_INT 0x0 /* integer */
48 #define MS_TYP_CHA 0x1 /* character */
49 #define MS_TYP_PTR 0x2 /* void pointer */
50 #define MS_TYP_FUN 0x3 /* function pointer */
52 #define MS_PARAM(ins,arg,typ) \
53 (((ins<<MS_INS_OFFSET) & MS_INS_MASK) | \
54 ((arg<<MS_ARG_OFFSET) & MS_ARG_MASK) | \
55 ((typ<<MS_TYP_OFFSET) & MS_TYP_MASK))
57 #define MS_INS(param) ((param & MS_INS_MASK) >> MS_INS_OFFSET)
58 #define MS_ARG(param) ((param & MS_ARG_MASK) >> MS_ARG_OFFSET)
59 #define MS_TYP(param) ((param & MS_TYP_MASK) >> MS_TYP_OFFSET)
61 /* microsequence opcodes - do not change! */
62 #define MS_OP_GET 0 /* get <ptr>, <len> */
63 #define MS_OP_PUT 1 /* put <ptr>, <len> */
65 #define MS_OP_RFETCH 2 /* rfetch <reg>, <mask>, <ptr> */
66 #define MS_OP_RSET 3 /* rset <reg>, <mask>, <mask> */
67 #define MS_OP_RASSERT 4 /* rassert <reg>, <mask> */
68 #define MS_OP_DELAY 5 /* delay <val> */
69 #define MS_OP_SET 6 /* set <val> */
70 #define MS_OP_DBRA 7 /* dbra <offset> */
71 #define MS_OP_BRSET 8 /* brset <mask>, <offset> */
72 #define MS_OP_BRCLEAR 9 /* brclear <mask>, <offset> */
73 #define MS_OP_RET 10 /* ret <retcode> */
74 #define MS_OP_C_CALL 11 /* c_call <function>, <parameter> */
75 #define MS_OP_PTR 12 /* ptr <pointer> */
76 #define MS_OP_ADELAY 13 /* adelay <val> */
77 #define MS_OP_BRSTAT 14 /* brstat <mask>, <mask>, <offset> */
78 #define MS_OP_SUBRET 15 /* subret <code> */
79 #define MS_OP_CALL 16 /* call <microsequence> */
80 #define MS_OP_RASSERT_P 17 /* rassert_p <iter>, <reg> */
81 #define MS_OP_RFETCH_P 18 /* rfetch_p <iter>, <reg>, <mask> */
82 #define MS_OP_TRIG 19 /* trigger <reg>, <len>, <array> */
85 #define MS_CLEAR_ALL 0x0
86 #define MS_ASSERT_NONE 0x0
87 #define MS_ASSERT_ALL 0xff
88 #define MS_FETCH_ALL 0xff
90 /* undefined parameter value */
92 #define MS_UNKNOWN MS_NULL
94 /* predifined parameters */
95 #define MS_ACCUM -1 /* use accum previously set by MS_OP_SET */
97 /* these are register numbers according to our PC-like parallel port model */
98 #define MS_REG_DTR 0x0
99 #define MS_REG_STR 0x1
100 #define MS_REG_CTR 0x2
101 #define MS_REG_EPP_A 0x3
102 #define MS_REG_EPP_D 0x4
105 * Microsequence macro abstraction level
108 /* register operations */
109 #define MS_RSET(reg,assert,clear) { MS_OP_RSET, {{ reg }, { assert }, { clear }}}
110 #define MS_RASSERT(reg,byte) { MS_OP_RASSERT, { { reg }, { byte }}}
111 #define MS_RCLR(reg,clear) { MS_OP_RSET, {{ reg }, { MS_ASSERT_NONE }, { clear }}}
113 #define MS_RFETCH(reg,mask,ptr) { MS_OP_RFETCH, {{ reg }, { mask }, { ptr }}}
115 /* trigger the port with array[char, delay,...] */
116 #define MS_TRIG(reg,len,array) { MS_OP_TRIG, {{ reg }, { len }, { array }}}
118 /* assert/fetch from/to ptr */
119 #define MS_RASSERT_P(n,reg) { MS_OP_RASSERT_P, {{ n }, { reg }}}
120 #define MS_RFETCH_P(n,reg,mask) { MS_OP_RFETCH_P, {{ n }, { reg }, { mask }}}
122 /* ptr manipulation */
123 #define MS_PTR(ptr) { MS_OP_PTR, {{ ptr }}}
125 #define MS_DASS(byte) MS_RASSERT(MS_REG_DTR,byte)
126 #define MS_SASS(byte) MS_RASSERT(MS_REG_STR,byte)
127 #define MS_CASS(byte) MS_RASSERT(MS_REG_CTR,byte)
129 #define MS_SET(accum) { MS_OP_SET, {{ accum }}}
130 #define MS_BRSET(mask,offset) { MS_OP_BRSET, {{ mask }, { offset }}}
131 #define MS_DBRA(offset) { MS_OP_DBRA, {{ offset }}}
132 #define MS_BRCLEAR(mask,offset) { MS_OP_BRCLEAR, {{ mask }, { offset }}}
133 #define MS_BRSTAT(mask_set,mask_clr,offset) \
134 { MS_OP_BRSTAT, {{ mask_set }, { mask_clr }, { offset }}}
136 /* C function or submicrosequence call */
137 #define MS_C_CALL(function,parameter) \
138 { MS_OP_C_CALL, {{ function }, { parameter }}}
139 #define MS_CALL(microseq) { MS_OP_CALL, {{ microseq }}}
141 /* mode dependent read/write operations
142 * ppb_MS_xxx_init() call required otherwise default is
143 * IEEE1284 operating mode */
144 #define MS_PUT(ptr,len) { MS_OP_PUT, {{ ptr }, { len }}}
145 #define MS_GET(ptr,len) { MS_OP_GET, {{ ptr }, { len }}}
147 /* delay in microseconds */
148 #define MS_DELAY(udelay) { MS_OP_DELAY, {{ udelay }}}
150 /* asynchroneous delay in ms */
151 #define MS_ADELAY(mdelay) { MS_OP_ADELAY, {{ mdelay }}}
153 /* return from submicrosequence execution or microseqence execution */
154 #define MS_SUBRET(code) { MS_OP_SUBRET, {{ code }}}
155 #define MS_RET(code) { MS_OP_RET, {{ code }}}
158 * Function abstraction level
161 #define ppb_MS_GET_init(bus,dev,body) ppb_MS_init(bus, dev, body, MS_OP_GET)
163 #define ppb_MS_PUT_init(bus,dev,body) ppb_MS_init(bus, dev, body, MS_OP_PUT)
165 extern int ppb_MS_init(
166 device_t, /* ppbus bus */
167 device_t, /* ppbus device */
168 struct ppb_microseq *, /* loop msq to assign */
169 int opcode /* MS_OP_GET, MS_OP_PUT */
172 extern int ppb_MS_init_msq(
173 struct ppb_microseq *,
174 int, /* number of parameters */
175 ... /* descriptor, value, ... */
178 extern int ppb_MS_exec(
179 device_t, /* ppbus bus */
180 device_t, /* ppbus device */
181 int, /* microseq opcode */
182 union ppb_insarg, /* param1 */
183 union ppb_insarg, /* param2 */
184 union ppb_insarg, /* param3 */
185 int * /* returned value */
188 extern int ppb_MS_loop(
189 device_t, /* ppbus bus */
190 device_t, /* ppbus device */
191 struct ppb_microseq *, /* prologue msq of loop */
192 struct ppb_microseq *, /* body msq of loop */
193 struct ppb_microseq *, /* epilogue msq of loop */
194 int, /* number of iter */
195 int * /* returned value */
198 extern int ppb_MS_microseq(
199 device_t, /* ppbus bus */
200 device_t, /* ppbus device */
201 struct ppb_microseq *, /* msq to execute */
202 int * /* returned value */