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1 | /* | |
2 | * This file is part of the sigrok 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 | /* Message logging helpers with driver-specific prefix string. */ | |
26 | #define DRIVER_LOG_DOMAIN "asix-sigma: " | |
27 | #define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) | |
28 | #define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) | |
29 | #define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) | |
30 | #define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) | |
31 | #define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) | |
32 | #define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) | |
33 | ||
34 | enum sigma_write_register { | |
35 | WRITE_CLOCK_SELECT = 0, | |
36 | WRITE_TRIGGER_SELECT0 = 1, | |
37 | WRITE_TRIGGER_SELECT1 = 2, | |
38 | WRITE_MODE = 3, | |
39 | WRITE_MEMROW = 4, | |
40 | WRITE_POST_TRIGGER = 5, | |
41 | WRITE_TRIGGER_OPTION = 6, | |
42 | WRITE_PIN_VIEW = 7, | |
43 | ||
44 | WRITE_TEST = 15, | |
45 | }; | |
46 | ||
47 | enum sigma_read_register { | |
48 | READ_ID = 0, | |
49 | READ_TRIGGER_POS_LOW = 1, | |
50 | READ_TRIGGER_POS_HIGH = 2, | |
51 | READ_TRIGGER_POS_UP = 3, | |
52 | READ_STOP_POS_LOW = 4, | |
53 | READ_STOP_POS_HIGH = 5, | |
54 | READ_STOP_POS_UP = 6, | |
55 | READ_MODE = 7, | |
56 | READ_PIN_CHANGE_LOW = 8, | |
57 | READ_PIN_CHANGE_HIGH = 9, | |
58 | READ_BLOCK_LAST_TS_LOW = 10, | |
59 | READ_BLOCK_LAST_TS_HIGH = 11, | |
60 | READ_PIN_VIEW = 12, | |
61 | ||
62 | READ_TEST = 15, | |
63 | }; | |
64 | ||
65 | #define REG_ADDR_LOW (0 << 4) | |
66 | #define REG_ADDR_HIGH (1 << 4) | |
67 | #define REG_DATA_LOW (2 << 4) | |
68 | #define REG_DATA_HIGH_WRITE (3 << 4) | |
69 | #define REG_READ_ADDR (4 << 4) | |
70 | #define REG_DRAM_WAIT_ACK (5 << 4) | |
71 | ||
72 | /* Bit (1 << 4) can be low or high (double buffer / cache) */ | |
73 | #define REG_DRAM_BLOCK (6 << 4) | |
74 | #define REG_DRAM_BLOCK_BEGIN (8 << 4) | |
75 | #define REG_DRAM_BLOCK_DATA (10 << 4) | |
76 | ||
77 | #define LEDSEL0 6 | |
78 | #define LEDSEL1 7 | |
79 | ||
80 | #define NEXT_REG 1 | |
81 | ||
82 | #define EVENTS_PER_CLUSTER 7 | |
83 | ||
84 | #define CHUNK_SIZE 1024 | |
85 | ||
86 | struct clockselect_50 { | |
87 | uint8_t async; | |
88 | uint8_t fraction; | |
89 | uint16_t disabled_probes; | |
90 | }; | |
91 | ||
92 | /* The effect of all these are still a bit unclear. */ | |
93 | struct triggerinout { | |
94 | uint8_t trgout_resistor_enable : 1; | |
95 | uint8_t trgout_resistor_pullup : 1; | |
96 | uint8_t reserved1 : 1; | |
97 | uint8_t trgout_bytrigger : 1; | |
98 | uint8_t trgout_byevent : 1; | |
99 | uint8_t trgout_bytriggerin : 1; | |
100 | uint8_t reserved2 : 2; | |
101 | ||
102 | /* Should be set same as the first two */ | |
103 | uint8_t trgout_resistor_enable2 : 1; | |
104 | uint8_t trgout_resistor_pullup2 : 1; | |
105 | ||
106 | uint8_t reserved3 : 1; | |
107 | uint8_t trgout_long : 1; | |
108 | uint8_t trgout_pin : 1; /* Use 1k resistor. Pullup? */ | |
109 | uint8_t trgin_negate : 1; | |
110 | uint8_t trgout_enable : 1; | |
111 | uint8_t trgin_enable : 1; | |
112 | }; | |
113 | ||
114 | struct triggerlut { | |
115 | /* The actual LUTs. */ | |
116 | uint16_t m0d[4], m1d[4], m2d[4]; | |
117 | uint16_t m3, m3s, m4; | |
118 | ||
119 | /* Paramters should be sent as a single register write. */ | |
120 | struct { | |
121 | uint8_t selc : 2; | |
122 | uint8_t selpresc : 6; | |
123 | ||
124 | uint8_t selinc : 2; | |
125 | uint8_t selres : 2; | |
126 | uint8_t sela : 2; | |
127 | uint8_t selb : 2; | |
128 | ||
129 | uint16_t cmpb; | |
130 | uint16_t cmpa; | |
131 | } params; | |
132 | }; | |
133 | ||
134 | /* Trigger configuration */ | |
135 | struct sigma_trigger { | |
136 | /* Only two probes can be used in mask. */ | |
137 | uint16_t risingmask; | |
138 | uint16_t fallingmask; | |
139 | ||
140 | /* Simple trigger support (<= 50 MHz). */ | |
141 | uint16_t simplemask; | |
142 | uint16_t simplevalue; | |
143 | ||
144 | /* TODO: Advanced trigger support (boolean expressions). */ | |
145 | }; | |
146 | ||
147 | /* Events for trigger operation. */ | |
148 | enum triggerop { | |
149 | OP_LEVEL = 1, | |
150 | OP_NOT, | |
151 | OP_RISE, | |
152 | OP_FALL, | |
153 | OP_RISEFALL, | |
154 | OP_NOTRISE, | |
155 | OP_NOTFALL, | |
156 | OP_NOTRISEFALL, | |
157 | }; | |
158 | ||
159 | /* Logical functions for trigger operation. */ | |
160 | enum triggerfunc { | |
161 | FUNC_AND = 1, | |
162 | FUNC_NAND, | |
163 | FUNC_OR, | |
164 | FUNC_NOR, | |
165 | FUNC_XOR, | |
166 | FUNC_NXOR, | |
167 | }; | |
168 | ||
169 | struct sigma_state { | |
170 | enum { | |
171 | SIGMA_UNINITIALIZED = 0, | |
172 | SIGMA_IDLE, | |
173 | SIGMA_CAPTURE, | |
174 | SIGMA_DOWNLOAD, | |
175 | } state; | |
176 | ||
177 | uint32_t stoppos, triggerpos; | |
178 | uint16_t lastts; | |
179 | uint16_t lastsample; | |
180 | ||
181 | int triggerchunk; | |
182 | int chunks_downloaded; | |
183 | }; | |
184 | ||
185 | /* Private, per-device-instance driver context. */ | |
186 | struct dev_context { | |
187 | struct ftdi_context ftdic; | |
188 | uint64_t cur_samplerate; | |
189 | uint64_t period_ps; | |
190 | uint64_t limit_msec; | |
191 | struct timeval start_tv; | |
192 | int cur_firmware; | |
193 | int num_probes; | |
194 | int samples_per_event; | |
195 | int capture_ratio; | |
196 | struct sigma_trigger trigger; | |
197 | int use_triggers; | |
198 | struct sigma_state state; | |
199 | void *cb_data; | |
200 | }; | |
201 | ||
202 | #endif |