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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Håvard Espeland <gus@ping.uio.no>, | |
5 | * Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no> | |
6 | * Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no> | |
7 | * | |
8 | * This program is free software: you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, either version 3 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #ifndef LIBSIGROK_HARDWARE_ASIX_SIGMA_ASIX_SIGMA_H | |
23 | #define LIBSIGROK_HARDWARE_ASIX_SIGMA_ASIX_SIGMA_H | |
24 | ||
25 | #define LOG_PREFIX "asix-sigma" | |
26 | ||
27 | enum sigma_write_register { | |
28 | WRITE_CLOCK_SELECT = 0, | |
29 | WRITE_TRIGGER_SELECT0 = 1, | |
30 | WRITE_TRIGGER_SELECT1 = 2, | |
31 | WRITE_MODE = 3, | |
32 | WRITE_MEMROW = 4, | |
33 | WRITE_POST_TRIGGER = 5, | |
34 | WRITE_TRIGGER_OPTION = 6, | |
35 | WRITE_PIN_VIEW = 7, | |
36 | ||
37 | WRITE_TEST = 15, | |
38 | }; | |
39 | ||
40 | enum sigma_read_register { | |
41 | READ_ID = 0, | |
42 | READ_TRIGGER_POS_LOW = 1, | |
43 | READ_TRIGGER_POS_HIGH = 2, | |
44 | READ_TRIGGER_POS_UP = 3, | |
45 | READ_STOP_POS_LOW = 4, | |
46 | READ_STOP_POS_HIGH = 5, | |
47 | READ_STOP_POS_UP = 6, | |
48 | READ_MODE = 7, | |
49 | READ_PIN_CHANGE_LOW = 8, | |
50 | READ_PIN_CHANGE_HIGH = 9, | |
51 | READ_BLOCK_LAST_TS_LOW = 10, | |
52 | READ_BLOCK_LAST_TS_HIGH = 11, | |
53 | READ_PIN_VIEW = 12, | |
54 | ||
55 | READ_TEST = 15, | |
56 | }; | |
57 | ||
58 | #define REG_ADDR_LOW (0x0 << 4) | |
59 | #define REG_ADDR_HIGH (0x1 << 4) | |
60 | #define REG_DATA_LOW (0x2 << 4) | |
61 | #define REG_DATA_HIGH_WRITE (0x3 << 4) | |
62 | #define REG_READ_ADDR (0x4 << 4) | |
63 | #define REG_DRAM_WAIT_ACK (0x5 << 4) | |
64 | ||
65 | /* Bit (1 << 4) can be low or high (double buffer / cache) */ | |
66 | #define REG_DRAM_BLOCK (0x6 << 4) | |
67 | #define REG_DRAM_BLOCK_BEGIN (0x8 << 4) | |
68 | #define REG_DRAM_BLOCK_DATA (0xa << 4) | |
69 | ||
70 | #define LEDSEL0 6 | |
71 | #define LEDSEL1 7 | |
72 | ||
73 | #define NEXT_REG 1 | |
74 | ||
75 | #define EVENTS_PER_CLUSTER 7 | |
76 | ||
77 | #define CHUNK_SIZE 1024 | |
78 | ||
79 | /* | |
80 | * The entire ASIX Sigma DRAM is an array of struct sigma_dram_line[1024]; | |
81 | */ | |
82 | ||
83 | /* One "DRAM cluster" contains a timestamp and 7 samples, 16b total. */ | |
84 | struct sigma_dram_cluster { | |
85 | uint8_t timestamp_lo; | |
86 | uint8_t timestamp_hi; | |
87 | struct { | |
88 | uint8_t sample_hi; | |
89 | uint8_t sample_lo; | |
90 | } samples[7]; | |
91 | }; | |
92 | ||
93 | /* One "DRAM line" contains 64 "DRAM clusters", 1024b total. */ | |
94 | struct sigma_dram_line { | |
95 | struct sigma_dram_cluster cluster[64]; | |
96 | }; | |
97 | ||
98 | struct clockselect_50 { | |
99 | uint8_t async; | |
100 | uint8_t fraction; | |
101 | uint16_t disabled_channels; | |
102 | }; | |
103 | ||
104 | /* The effect of all these are still a bit unclear. */ | |
105 | struct triggerinout { | |
106 | uint8_t trgout_resistor_enable : 1; | |
107 | uint8_t trgout_resistor_pullup : 1; | |
108 | uint8_t reserved1 : 1; | |
109 | uint8_t trgout_bytrigger : 1; | |
110 | uint8_t trgout_byevent : 1; | |
111 | uint8_t trgout_bytriggerin : 1; | |
112 | uint8_t reserved2 : 2; | |
113 | ||
114 | /* Should be set same as the first two */ | |
115 | uint8_t trgout_resistor_enable2 : 1; | |
116 | uint8_t trgout_resistor_pullup2 : 1; | |
117 | ||
118 | uint8_t reserved3 : 1; | |
119 | uint8_t trgout_long : 1; | |
120 | uint8_t trgout_pin : 1; /* Use 1k resistor. Pullup? */ | |
121 | uint8_t trgin_negate : 1; | |
122 | uint8_t trgout_enable : 1; | |
123 | uint8_t trgin_enable : 1; | |
124 | }; | |
125 | ||
126 | struct triggerlut { | |
127 | /* The actual LUTs. */ | |
128 | uint16_t m0d[4], m1d[4], m2d[4]; | |
129 | uint16_t m3, m3s, m4; | |
130 | ||
131 | /* Paramters should be sent as a single register write. */ | |
132 | struct { | |
133 | uint8_t selc : 2; | |
134 | uint8_t selpresc : 6; | |
135 | ||
136 | uint8_t selinc : 2; | |
137 | uint8_t selres : 2; | |
138 | uint8_t sela : 2; | |
139 | uint8_t selb : 2; | |
140 | ||
141 | uint16_t cmpb; | |
142 | uint16_t cmpa; | |
143 | } params; | |
144 | }; | |
145 | ||
146 | /* Trigger configuration */ | |
147 | struct sigma_trigger { | |
148 | /* Only two channels can be used in mask. */ | |
149 | uint16_t risingmask; | |
150 | uint16_t fallingmask; | |
151 | ||
152 | /* Simple trigger support (<= 50 MHz). */ | |
153 | uint16_t simplemask; | |
154 | uint16_t simplevalue; | |
155 | ||
156 | /* TODO: Advanced trigger support (boolean expressions). */ | |
157 | }; | |
158 | ||
159 | /* Events for trigger operation. */ | |
160 | enum triggerop { | |
161 | OP_LEVEL = 1, | |
162 | OP_NOT, | |
163 | OP_RISE, | |
164 | OP_FALL, | |
165 | OP_RISEFALL, | |
166 | OP_NOTRISE, | |
167 | OP_NOTFALL, | |
168 | OP_NOTRISEFALL, | |
169 | }; | |
170 | ||
171 | /* Logical functions for trigger operation. */ | |
172 | enum triggerfunc { | |
173 | FUNC_AND = 1, | |
174 | FUNC_NAND, | |
175 | FUNC_OR, | |
176 | FUNC_NOR, | |
177 | FUNC_XOR, | |
178 | FUNC_NXOR, | |
179 | }; | |
180 | ||
181 | struct sigma_state { | |
182 | enum { | |
183 | SIGMA_UNINITIALIZED = 0, | |
184 | SIGMA_IDLE, | |
185 | SIGMA_CAPTURE, | |
186 | SIGMA_DOWNLOAD, | |
187 | } state; | |
188 | ||
189 | uint16_t lastts; | |
190 | uint16_t lastsample; | |
191 | }; | |
192 | ||
193 | /* Private, per-device-instance driver context. */ | |
194 | struct dev_context { | |
195 | struct ftdi_context ftdic; | |
196 | uint64_t cur_samplerate; | |
197 | uint64_t period_ps; | |
198 | uint64_t limit_msec; | |
199 | struct timeval start_tv; | |
200 | int cur_firmware; | |
201 | int num_channels; | |
202 | int cur_channels; | |
203 | int samples_per_event; | |
204 | int capture_ratio; | |
205 | struct sigma_trigger trigger; | |
206 | int use_triggers; | |
207 | struct sigma_state state; | |
208 | void *cb_data; | |
209 | }; | |
210 | ||
211 | #endif |