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b9d53092 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
5 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
6ec6c43b | 21 | #include <config.h> |
b9d53092 BV |
22 | #include <math.h> |
23 | #include <glib.h> | |
24 | #include <glib/gstdio.h> | |
25 | #include "protocol.h" | |
26 | #include "dslogic.h" | |
27 | ||
3f0ff412 DA |
28 | /* |
29 | * This should be larger than the FPGA bitstream image so that it'll get | |
30 | * uploaded in one big operation. There seem to be issues when uploading | |
31 | * it in chunks. | |
32 | */ | |
33 | #define FW_BUFSIZE (1024 * 1024) | |
1a46cc62 | 34 | |
4df5739a UH |
35 | #define FPGA_UPLOAD_DELAY (10 * 1000) |
36 | ||
37 | #define USB_TIMEOUT (3 * 1000) | |
38 | ||
3fc3fbe4 DA |
39 | SR_PRIV int dslogic_set_vth(const struct sr_dev_inst *sdi, double vth) |
40 | { | |
41 | struct sr_usb_dev_inst *usb; | |
3fc3fbe4 | 42 | int ret; |
c2f35321 JH |
43 | const uint8_t value = (vth / 5.0) * 255; |
44 | const uint16_t cmd = value | (DS_ADDR_VTH << 8); | |
3fc3fbe4 | 45 | |
9803346f UH |
46 | usb = sdi->conn; |
47 | ||
3fc3fbe4 | 48 | /* Send the control command. */ |
c2f35321 JH |
49 | ret = libusb_control_transfer(usb->devhdl, |
50 | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, | |
51 | DS_CMD_WR_REG, 0x0000, 0x0000, | |
9803346f | 52 | (unsigned char *)&cmd, sizeof(cmd), 3000); |
3fc3fbe4 DA |
53 | if (ret < 0) { |
54 | sr_err("Unable to send VTH command: %s.", | |
55 | libusb_error_name(ret)); | |
56 | return SR_ERR; | |
57 | } | |
58 | ||
59 | return SR_OK; | |
60 | } | |
61 | ||
8e2d6c9d DE |
62 | SR_PRIV int dslogic_fpga_firmware_upload(const struct sr_dev_inst *sdi, |
63 | const char *name) | |
b9d53092 | 64 | { |
8e2d6c9d DE |
65 | uint64_t sum; |
66 | struct sr_resource bitstream; | |
67 | struct drv_context *drvc; | |
b9d53092 | 68 | struct sr_usb_dev_inst *usb; |
b9d53092 | 69 | unsigned char *buf; |
8e2d6c9d DE |
70 | ssize_t chunksize; |
71 | int transferred; | |
72 | int result, ret; | |
cd189a44 | 73 | const uint8_t cmd[3] = {0, 0, 0}; |
b9d53092 | 74 | |
8e2d6c9d | 75 | drvc = sdi->driver->context; |
b9d53092 | 76 | usb = sdi->conn; |
8e2d6c9d DE |
77 | |
78 | sr_dbg("Uploading FPGA firmware '%s'.", name); | |
79 | ||
80 | result = sr_resource_open(drvc->sr_ctx, &bitstream, | |
81 | SR_RESOURCE_FIRMWARE, name); | |
82 | if (result != SR_OK) | |
83 | return result; | |
b9d53092 BV |
84 | |
85 | /* Tell the device firmware is coming. */ | |
86 | if ((ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | | |
9d71f815 | 87 | LIBUSB_ENDPOINT_OUT, DS_CMD_CONFIG, 0x0000, 0x0000, |
d93c1470 | 88 | (unsigned char *)&cmd, sizeof(cmd), USB_TIMEOUT)) < 0) { |
b9d53092 | 89 | sr_err("Failed to upload FPGA firmware: %s.", libusb_error_name(ret)); |
8e2d6c9d | 90 | sr_resource_close(drvc->sr_ctx, &bitstream); |
b9d53092 BV |
91 | return SR_ERR; |
92 | } | |
93 | ||
94 | /* Give the FX2 time to get ready for FPGA firmware upload. */ | |
4df5739a | 95 | g_usleep(FPGA_UPLOAD_DELAY); |
b9d53092 | 96 | |
8e2d6c9d | 97 | buf = g_malloc(FW_BUFSIZE); |
b9d53092 BV |
98 | sum = 0; |
99 | result = SR_OK; | |
100 | while (1) { | |
8e2d6c9d DE |
101 | chunksize = sr_resource_read(drvc->sr_ctx, &bitstream, |
102 | buf, FW_BUFSIZE); | |
103 | if (chunksize < 0) | |
104 | result = SR_ERR; | |
105 | if (chunksize <= 0) | |
b9d53092 BV |
106 | break; |
107 | ||
108 | if ((ret = libusb_bulk_transfer(usb->devhdl, 2 | LIBUSB_ENDPOINT_OUT, | |
4df5739a | 109 | buf, chunksize, &transferred, USB_TIMEOUT)) < 0) { |
b9d53092 BV |
110 | sr_err("Unable to configure FPGA firmware: %s.", |
111 | libusb_error_name(ret)); | |
112 | result = SR_ERR; | |
113 | break; | |
114 | } | |
115 | sum += transferred; | |
8e2d6c9d DE |
116 | sr_spew("Uploaded %" PRIu64 "/%" PRIu64 " bytes.", |
117 | sum, bitstream.size); | |
b9d53092 BV |
118 | |
119 | if (transferred != chunksize) { | |
120 | sr_err("Short transfer while uploading FPGA firmware."); | |
121 | result = SR_ERR; | |
122 | break; | |
123 | } | |
124 | } | |
b9d53092 | 125 | g_free(buf); |
8e2d6c9d DE |
126 | sr_resource_close(drvc->sr_ctx, &bitstream); |
127 | ||
b9d53092 BV |
128 | if (result == SR_OK) |
129 | sr_dbg("FPGA firmware upload done."); | |
130 | ||
131 | return result; | |
132 | } | |
133 | ||
8e2d6c9d | 134 | SR_PRIV int dslogic_start_acquisition(const struct sr_dev_inst *sdi) |
b9d53092 | 135 | { |
b9d53092 BV |
136 | struct sr_usb_dev_inst *usb; |
137 | struct dslogic_mode mode; | |
138 | int ret; | |
139 | ||
adcb9951 | 140 | mode.flags = DS_START_FLAGS_MODE_LA | DS_START_FLAGS_SAMPLE_WIDE; |
b9d53092 | 141 | mode.sample_delay_h = mode.sample_delay_l = 0; |
b9d53092 BV |
142 | |
143 | usb = sdi->conn; | |
144 | ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | | |
145 | LIBUSB_ENDPOINT_OUT, DS_CMD_START, 0x0000, 0x0000, | |
4df5739a | 146 | (unsigned char *)&mode, sizeof(mode), USB_TIMEOUT); |
b9d53092 BV |
147 | if (ret < 0) { |
148 | sr_err("Failed to send start command: %s.", libusb_error_name(ret)); | |
149 | return SR_ERR; | |
150 | } | |
151 | ||
152 | return SR_OK; | |
153 | } | |
154 | ||
8e2d6c9d | 155 | SR_PRIV int dslogic_stop_acquisition(const struct sr_dev_inst *sdi) |
b9d53092 BV |
156 | { |
157 | struct sr_usb_dev_inst *usb; | |
158 | struct dslogic_mode mode; | |
159 | int ret; | |
160 | ||
161 | mode.flags = DS_START_FLAGS_STOP; | |
162 | mode.sample_delay_h = mode.sample_delay_l = 0; | |
163 | ||
164 | usb = sdi->conn; | |
165 | ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | | |
166 | LIBUSB_ENDPOINT_OUT, DS_CMD_START, 0x0000, 0x0000, | |
4df5739a | 167 | (unsigned char *)&mode, sizeof(struct dslogic_mode), USB_TIMEOUT); |
b9d53092 BV |
168 | if (ret < 0) { |
169 | sr_err("Failed to send stop command: %s.", libusb_error_name(ret)); | |
170 | return SR_ERR; | |
171 | } | |
172 | ||
173 | return SR_OK; | |
174 | } | |
175 | ||
3db03efa DA |
176 | /* |
177 | * Get the session trigger and configure the FPGA structure | |
178 | * accordingly. | |
179 | */ | |
180 | static int dslogic_set_trigger(const struct sr_dev_inst *sdi, | |
181 | struct dslogic_fpga_config *cfg) | |
182 | { | |
183 | struct sr_trigger *trigger; | |
184 | struct sr_trigger_stage *stage; | |
185 | struct sr_trigger_match *match; | |
186 | struct dev_context *devc; | |
187 | const GSList *l, *m; | |
188 | int channelbit, i = 0; | |
189 | uint16_t v16; | |
190 | ||
9803346f UH |
191 | devc = sdi->priv; |
192 | ||
e40ee26b JH |
193 | cfg->ch_en = 0; |
194 | for (l = sdi->channels; l; l = l->next) { | |
195 | const struct sr_channel *const probe = (struct sr_channel *)l->data; | |
196 | cfg->ch_en |= probe->enabled << probe->index; | |
197 | } | |
198 | ||
3db03efa DA |
199 | cfg->trig_mask0[0] = 0xffff; |
200 | cfg->trig_mask1[0] = 0xffff; | |
201 | ||
202 | cfg->trig_value0[0] = 0; | |
203 | cfg->trig_value1[0] = 0; | |
204 | ||
205 | cfg->trig_edge0[0] = 0; | |
206 | cfg->trig_edge1[0] = 0; | |
207 | ||
208 | cfg->trig_logic0[0] = 0; | |
209 | cfg->trig_logic1[0] = 0; | |
210 | ||
e40ee26b | 211 | cfg->trig_count[0] = 0; |
3db03efa | 212 | |
4237fbca | 213 | cfg->trig_glb = 0; |
4237fbca | 214 | |
adcb9951 | 215 | for (i = 1; i < NUM_TRIGGER_STAGES; i++) { |
4237fbca DA |
216 | cfg->trig_mask0[i] = 0xff; |
217 | cfg->trig_mask1[i] = 0xff; | |
218 | cfg->trig_value0[i] = 0; | |
219 | cfg->trig_value1[i] = 0; | |
220 | cfg->trig_edge0[i] = 0; | |
221 | cfg->trig_edge1[i] = 0; | |
4237fbca DA |
222 | cfg->trig_logic0[i] = 2; |
223 | cfg->trig_logic1[i] = 2; | |
e40ee26b | 224 | cfg->trig_count[i] = 0; |
4237fbca DA |
225 | } |
226 | ||
227 | cfg->trig_pos = (uint32_t)(devc->capture_ratio / 100.0 * devc->limit_samples); | |
228 | sr_dbg("pos: %d", cfg->trig_pos); | |
229 | ||
230 | sr_dbg("configuring trigger"); | |
231 | ||
9803346f | 232 | if (!(trigger = sr_session_trigger_get(sdi->session))) { |
4237fbca | 233 | sr_dbg("No session trigger found"); |
3db03efa | 234 | return SR_OK; |
4237fbca | 235 | } |
3db03efa DA |
236 | |
237 | for (l = trigger->stages; l; l = l->next) { | |
238 | stage = l->data; | |
239 | for (m = stage->matches; m; m = m->next) { | |
240 | match = m->data; | |
241 | if (!match->channel->enabled) | |
242 | /* Ignore disabled channels with a trigger. */ | |
243 | continue; | |
244 | channelbit = 1 << (match->channel->index); | |
3db03efa DA |
245 | /* Simple trigger support (event). */ |
246 | if (match->match == SR_TRIGGER_ONE) { | |
247 | cfg->trig_mask0[0] &= ~channelbit; | |
248 | cfg->trig_mask1[0] &= ~channelbit; | |
249 | cfg->trig_value0[0] |= channelbit; | |
250 | cfg->trig_value1[0] |= channelbit; | |
251 | } else if (match->match == SR_TRIGGER_ZERO) { | |
252 | cfg->trig_mask0[0] &= ~channelbit; | |
253 | cfg->trig_mask1[0] &= ~channelbit; | |
254 | } else if (match->match == SR_TRIGGER_FALLING) { | |
255 | cfg->trig_mask0[0] &= ~channelbit; | |
256 | cfg->trig_mask1[0] &= ~channelbit; | |
257 | cfg->trig_edge0[0] |= channelbit; | |
258 | cfg->trig_edge1[0] |= channelbit; | |
259 | } else if (match->match == SR_TRIGGER_RISING) { | |
260 | cfg->trig_mask0[0] &= ~channelbit; | |
261 | cfg->trig_mask1[0] &= ~channelbit; | |
262 | cfg->trig_value0[0] |= channelbit; | |
263 | cfg->trig_value1[0] |= channelbit; | |
264 | cfg->trig_edge0[0] |= channelbit; | |
265 | cfg->trig_edge1[0] |= channelbit; | |
9803346f | 266 | } else if (match->match == SR_TRIGGER_EDGE) { |
3db03efa DA |
267 | cfg->trig_edge0[0] |= channelbit; |
268 | cfg->trig_edge1[0] |= channelbit; | |
269 | } | |
270 | } | |
271 | } | |
9803346f | 272 | |
4237fbca DA |
273 | v16 = RL16(&cfg->mode); |
274 | v16 |= 1 << 0; | |
275 | WL16(&cfg->mode, v16); | |
9803346f | 276 | |
3db03efa DA |
277 | return SR_OK; |
278 | } | |
279 | ||
8e2d6c9d | 280 | SR_PRIV int dslogic_fpga_configure(const struct sr_dev_inst *sdi) |
b9d53092 BV |
281 | { |
282 | struct dev_context *devc; | |
283 | struct sr_usb_dev_inst *usb; | |
284 | uint8_t c[3]; | |
285 | struct dslogic_fpga_config cfg; | |
286 | uint16_t v16; | |
287 | uint32_t v32; | |
288 | int transferred, len, ret; | |
289 | ||
290 | sr_dbg("Configuring FPGA."); | |
9803346f | 291 | |
b9d53092 BV |
292 | usb = sdi->conn; |
293 | devc = sdi->priv; | |
294 | ||
295 | WL32(&cfg.sync, DS_CFG_START); | |
296 | WL16(&cfg.mode_header, DS_CFG_MODE); | |
e40ee26b JH |
297 | WL16(&cfg.divider_header, DS_CFG_DIVIDER); |
298 | WL16(&cfg.count_header, DS_CFG_COUNT); | |
299 | WL16(&cfg.trig_pos_header, DS_CFG_TRIG_POS); | |
b9d53092 | 300 | WL16(&cfg.trig_glb_header, DS_CFG_TRIG_GLB); |
e40ee26b JH |
301 | WL16(&cfg.ch_en_header, DS_CFG_CH_EN); |
302 | WL16(&cfg.trig_header, DS_CFG_TRIG); | |
b9d53092 BV |
303 | WL32(&cfg.end_sync, DS_CFG_END); |
304 | ||
305 | /* Pass in the length of a fixed-size struct. Really. */ | |
306 | len = sizeof(struct dslogic_fpga_config) / 2; | |
307 | c[0] = len & 0xff; | |
308 | c[1] = (len >> 8) & 0xff; | |
309 | c[2] = (len >> 16) & 0xff; | |
310 | ||
311 | ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | | |
e40ee26b JH |
312 | LIBUSB_ENDPOINT_OUT, DS_CMD_SETTING, 0x0000, 0x0000, |
313 | c, sizeof(c), USB_TIMEOUT); | |
b9d53092 | 314 | if (ret < 0) { |
9803346f UH |
315 | sr_err("Failed to send FPGA configure command: %s.", |
316 | libusb_error_name(ret)); | |
b9d53092 BV |
317 | return SR_ERR; |
318 | } | |
319 | ||
b9d53092 | 320 | v16 = 0x0000; |
e40ee26b | 321 | |
adcb9951 | 322 | if (devc->mode == DS_OP_INTERNAL_TEST) |
cf398cc0 | 323 | v16 = DS_MODE_INT_TEST; |
adcb9951 | 324 | else if (devc->mode == DS_OP_EXTERNAL_TEST) |
cf398cc0 | 325 | v16 = DS_MODE_EXT_TEST; |
adcb9951 | 326 | else if (devc->mode == DS_OP_LOOPBACK_TEST) |
cf398cc0 | 327 | v16 = DS_MODE_LPB_TEST; |
adcb9951 | 328 | if (devc->continuous_mode) |
cf398cc0 | 329 | v16 |= DS_MODE_STREAM_MODE; |
adcb9951 | 330 | if (devc->external_clock) { |
cf398cc0 | 331 | v16 |= DS_MODE_CLK_TYPE; |
adcb9951 | 332 | if (devc->clock_edge == DS_EDGE_FALLING) |
cf398cc0 | 333 | v16 |= DS_MODE_CLK_EDGE; |
d9a58763 | 334 | } |
9803346f | 335 | if (devc->limit_samples > DS_MAX_LOGIC_DEPTH * |
176d785d | 336 | ceil(devc->cur_samplerate * 1.0 / DS_MAX_LOGIC_SAMPLERATE) |
adcb9951 | 337 | && !devc->continuous_mode) { |
9803346f UH |
338 | /* Enable RLE for long captures. |
339 | * Without this, captured data present errors. | |
340 | */ | |
cf398cc0 | 341 | v16 |= DS_MODE_RLE_MODE; |
a9a9bfaa | 342 | } |
3fc3fbe4 | 343 | |
b9d53092 | 344 | WL16(&cfg.mode, v16); |
a04b28ce | 345 | v32 = ceil(DS_MAX_LOGIC_SAMPLERATE * 1.0 / devc->cur_samplerate); |
b9d53092 BV |
346 | WL32(&cfg.divider, v32); |
347 | WL32(&cfg.count, devc->limit_samples); | |
348 | ||
3db03efa DA |
349 | dslogic_set_trigger(sdi, &cfg); |
350 | ||
b9d53092 BV |
351 | len = sizeof(struct dslogic_fpga_config); |
352 | ret = libusb_bulk_transfer(usb->devhdl, 2 | LIBUSB_ENDPOINT_OUT, | |
4df5739a | 353 | (unsigned char *)&cfg, len, &transferred, USB_TIMEOUT); |
b9d53092 BV |
354 | if (ret < 0 || transferred != len) { |
355 | sr_err("Failed to send FPGA configuration: %s.", libusb_error_name(ret)); | |
356 | return SR_ERR; | |
357 | } | |
358 | ||
359 | return SR_OK; | |
360 | } | |
a04b28ce | 361 | |
9803346f UH |
362 | static int to_bytes_per_ms(struct dev_context *devc) |
363 | { | |
a04b28ce | 364 | if (devc->cur_samplerate > SR_MHZ(100)) |
adcb9951 JH |
365 | return SR_MHZ(100) / 1000 * 2; |
366 | return devc->cur_samplerate / 1000 * 2; | |
a04b28ce DA |
367 | } |
368 | ||
369 | static size_t get_buffer_size(struct dev_context *devc) | |
370 | { | |
9803346f UH |
371 | size_t s; |
372 | ||
373 | /* | |
374 | * The buffer should be large enough to hold 10ms of data and | |
375 | * a multiple of 512. | |
376 | */ | |
377 | s = 10 * to_bytes_per_ms(devc); | |
378 | // s = to_bytes_per_ms(devc->cur_samplerate); | |
379 | return (s + 511) & ~511; | |
a04b28ce DA |
380 | } |
381 | ||
9803346f UH |
382 | SR_PRIV int dslogic_get_number_of_transfers(struct dev_context *devc) |
383 | { | |
a04b28ce | 384 | unsigned int n; |
9803346f | 385 | |
a04b28ce | 386 | /* Total buffer size should be able to hold about 100ms of data. */ |
9803346f | 387 | n = (100 * to_bytes_per_ms(devc) / get_buffer_size(devc)); |
a04b28ce DA |
388 | sr_info("New calculation: %d", n); |
389 | ||
390 | if (n > NUM_SIMUL_TRANSFERS) | |
391 | return NUM_SIMUL_TRANSFERS; | |
392 | ||
393 | return n; | |
394 | } |