2 * This file is part of the libsigrok project.
4 * Copyright (C) 2016 Eva Kissling <eva.kissling@bluewin.ch>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #define _WIN32_WINNT 0x0501
27 #include <sys/socket.h>
28 #include <netinet/in.h>
29 #include <arpa/inet.h>
31 #include <sys/ioctl.h>
40 /* Top-level command opcodes */
41 #define CMD_SET_TRIGGER 0x00
42 #define CMD_CFG_TRIGGER 0xF0
43 #define CMD_CFG_LA 0x0F
44 #define CMD_START 0xFE
45 #define CMD_RESET 0xEE
47 #define CMD_GET_BUS_WIDTHS 0xAA
48 #define CMD_GET_LA_ID 0xBB
49 #define CMD_ESCAPE 0x55
51 /* Trigger subfunction command opcodes */
52 #define CMD_TRIG_MASKS 0xF1
53 #define CMD_TRIG_MASK 0xF3
54 #define CMD_TRIG_VALUE 0xF7
56 #define CMD_TRIG_MASKS_LAST 0xF9
57 #define CMD_TRIG_MASK_LAST 0xFB
58 #define CMD_TRIG_VALUE_LAST 0xFF
60 #define CMD_TRIG_SELECT_EDGE_MASK 0xF5
61 #define CMD_TRIG_SET_EDGE_MASK 0xF6
63 /* LA subfunction command opcodes */
64 #define CMD_LA_DELAY 0x1F
66 static gboolean data_available(struct ipdbg_la_tcp *tcp)
69 u_long bytes_available;
70 if (ioctlsocket(tcp->socket, FIONREAD, &bytes_available) != 0) {
73 if (ioctl(tcp->socket, FIONREAD, &bytes_available) < 0) { /* TIOCMGET */
75 sr_err("FIONREAD failed: %s\n", g_strerror(errno));
78 return (bytes_available > 0);
81 SR_PRIV struct ipdbg_la_tcp *ipdbg_la_tcp_new(void)
83 struct ipdbg_la_tcp *tcp;
85 tcp = g_malloc0(sizeof(struct ipdbg_la_tcp));
93 SR_PRIV void ipdbg_la_tcp_free(struct ipdbg_la_tcp *tcp)
99 SR_PRIV int ipdbg_la_tcp_open(struct ipdbg_la_tcp *tcp)
101 struct addrinfo hints;
102 struct addrinfo *results, *res;
105 memset(&hints, 0, sizeof(hints));
106 hints.ai_family = AF_UNSPEC;
107 hints.ai_socktype = SOCK_STREAM;
108 hints.ai_protocol = IPPROTO_TCP;
110 err = getaddrinfo(tcp->address, tcp->port, &hints, &results);
113 sr_err("Address lookup failed: %s:%s: %s", tcp->address,
114 tcp->port, gai_strerror(err));
118 for (res = results; res; res = res->ai_next) {
119 if ((tcp->socket = socket(res->ai_family, res->ai_socktype,
120 res->ai_protocol)) < 0)
122 if (connect(tcp->socket, res->ai_addr, res->ai_addrlen) != 0) {
130 freeaddrinfo(results);
132 if (tcp->socket < 0) {
133 sr_err("Failed to connect to %s:%s: %s", tcp->address, tcp->port,
141 SR_PRIV int ipdbg_la_tcp_close(struct ipdbg_la_tcp *tcp)
146 if (shutdown(tcp->socket, SD_SEND) != SOCKET_ERROR) {
149 /* Receive until the peer closes the connection. */
150 while (recv(tcp->socket, recvbuf, recvbuflen, 0) > 0);
153 if (close(tcp->socket) < 0)
161 static int tcp_send(struct ipdbg_la_tcp *tcp, const uint8_t *buf, size_t len)
164 out = send(tcp->socket, (const char *)buf, len, 0);
167 sr_err("Send error: %s", g_strerror(errno));
172 sr_dbg("Only sent %d/%d bytes of data.", out, (int)len);
177 static int tcp_receive_blocking(struct ipdbg_la_tcp *tcp,
178 uint8_t *buf, int bufsize)
183 /* Timeout after 2s of not receiving data. */
184 /* Increase timeout in case lab is not just beside the office. */
185 while ((received < bufsize) && (error_count < 2000)) {
186 int recd = ipdbg_la_tcp_receive(tcp, buf, bufsize - received);
199 SR_PRIV int ipdbg_la_tcp_receive(struct ipdbg_la_tcp *tcp,
200 uint8_t *buf, size_t bufsize)
203 if (data_available(tcp))
204 received = recv(tcp->socket, (char *)buf, bufsize, 0);
206 sr_err("Receive error: %s", g_strerror(errno));
212 SR_PRIV int ipdbg_la_convert_trigger(const struct sr_dev_inst *sdi)
214 struct dev_context *devc;
215 struct sr_trigger *trigger;
216 struct sr_trigger_stage *stage;
217 struct sr_trigger_match *match;
222 devc->num_stages = 0;
223 devc->num_transfers = 0;
224 devc->raw_sample_buf = NULL;
226 for (uint64_t i = 0; i < devc->data_width_bytes; i++) {
227 devc->trigger_mask[i] = 0;
228 devc->trigger_value[i] = 0;
229 devc->trigger_mask_last[i] = 0;
230 devc->trigger_value_last[i] = 0;
231 devc->trigger_edge_mask[i] = 0;
234 if (!(trigger = sr_session_trigger_get(sdi->session)))
237 for (l = trigger->stages; l; l = l->next) {
239 for (m = stage->matches; m; m = m->next) {
241 int byte_idx = match->channel->index / 8;
242 uint8_t match_bit = 1 << (match->channel->index % 8);
244 if (!match->channel->enabled)
245 /* Ignore disabled channels with a trigger. */
248 if (match->match == SR_TRIGGER_ONE) {
249 devc->trigger_value[byte_idx] |= match_bit;
250 devc->trigger_mask[byte_idx] |= match_bit;
251 devc->trigger_mask_last[byte_idx] &= ~match_bit;
252 devc->trigger_edge_mask[byte_idx] &= ~match_bit;
253 } else if (match->match == SR_TRIGGER_ZERO) {
254 devc->trigger_value[byte_idx] &= ~match_bit;
255 devc->trigger_mask[byte_idx] |= match_bit;
256 devc->trigger_mask_last[byte_idx] &= ~match_bit;
257 devc->trigger_edge_mask[byte_idx] &= ~match_bit;
258 } else if (match->match == SR_TRIGGER_RISING) {
259 devc->trigger_value[byte_idx] |= match_bit;
260 devc->trigger_value_last[byte_idx] &=
262 devc->trigger_mask[byte_idx] |= match_bit;
263 devc->trigger_mask_last[byte_idx] |= match_bit;
264 devc->trigger_edge_mask[byte_idx] &= ~match_bit;
265 } else if (match->match == SR_TRIGGER_FALLING) {
266 devc->trigger_value[byte_idx] &= ~match_bit;
267 devc->trigger_value_last[byte_idx] |= match_bit;
268 devc->trigger_mask[byte_idx] |= match_bit;
269 devc->trigger_mask_last[byte_idx] |= match_bit;
270 devc->trigger_edge_mask[byte_idx] &= ~match_bit;
271 } else if (match->match == SR_TRIGGER_EDGE) {
272 devc->trigger_mask[byte_idx] &= ~match_bit;
273 devc->trigger_mask_last[byte_idx] &= ~match_bit;
274 devc->trigger_edge_mask[byte_idx] |= match_bit;
282 SR_PRIV int ipdbg_la_receive_data(int fd, int revents, void *cb_data)
284 const struct sr_dev_inst *sdi;
285 struct dev_context *devc;
294 if (!(devc = sdi->priv))
297 struct ipdbg_la_tcp *tcp = sdi->conn;
298 struct sr_datafeed_packet packet;
299 struct sr_datafeed_logic logic;
301 if (!devc->raw_sample_buf) {
302 devc->raw_sample_buf =
303 g_try_malloc(devc->limit_samples * devc->data_width_bytes);
304 if (!devc->raw_sample_buf) {
305 sr_err("Sample buffer malloc failed.");
310 if (devc->num_transfers <
311 (devc->limit_samples_max * devc->data_width_bytes)) {
312 const size_t bufsize = 1024;
313 uint8_t buffer[bufsize];
315 const int recd = ipdbg_la_tcp_receive(tcp, buffer, bufsize);
317 int num_move = (((devc->num_transfers + recd) <=
318 (devc->limit_samples * devc->data_width_bytes))
322 (int)((devc->limit_samples * devc->data_width_bytes) -
323 devc->num_transfers));
325 memcpy(&(devc->raw_sample_buf[devc->num_transfers]),
327 devc->num_transfers += recd;
330 if (devc->delay_value > 0) {
331 /* There are pre-trigger samples, send those first. */
332 packet.type = SR_DF_LOGIC;
333 packet.payload = &logic;
334 logic.length = devc->delay_value * devc->data_width_bytes;
335 logic.unitsize = devc->data_width_bytes;
336 logic.data = devc->raw_sample_buf;
337 sr_session_send(cb_data, &packet);
340 /* Send the trigger. */
341 std_session_send_df_trigger(cb_data);
343 /* Send post-trigger samples. */
344 packet.type = SR_DF_LOGIC;
345 packet.payload = &logic;
346 logic.length = (devc->limit_samples - devc->delay_value) *
347 devc->data_width_bytes;
348 logic.unitsize = devc->data_width_bytes;
349 logic.data = devc->raw_sample_buf +
350 (devc->delay_value * devc->data_width_bytes);
351 sr_session_send(cb_data, &packet);
353 g_free(devc->raw_sample_buf);
354 devc->raw_sample_buf = NULL;
356 ipdbg_la_abort_acquisition(sdi);
362 static int send_escaping(struct ipdbg_la_tcp *tcp, uint8_t *data_to_send,
365 uint8_t escape = CMD_ESCAPE;
368 uint8_t payload = *data_to_send++;
370 if (payload == CMD_RESET)
371 if (tcp_send(tcp, &escape, 1) != SR_OK)
372 sr_warn("Couldn't send escape");
374 if (payload == CMD_ESCAPE)
375 if (tcp_send(tcp, &escape, 1) != SR_OK)
376 sr_warn("Couldn't send escape");
378 if (tcp_send(tcp, &payload, 1) != SR_OK)
379 sr_warn("Couldn't send data");
385 SR_PRIV int ipdbg_la_send_delay(struct dev_context *devc,
386 struct ipdbg_la_tcp *tcp)
388 devc->delay_value = ((devc->limit_samples - 1) / 100.0) * devc->capture_ratio;
392 tcp_send(tcp, &buf, 1);
394 tcp_send(tcp, &buf, 1);
396 uint8_t delay_buf[4] = { devc->delay_value & 0x000000ff,
397 (devc->delay_value >> 8) & 0x000000ff,
398 (devc->delay_value >> 16) & 0x000000ff,
399 (devc->delay_value >> 24) & 0x000000ff
402 for (uint64_t i = 0; i < devc->addr_width_bytes; i++)
403 send_escaping(tcp, &(delay_buf[devc->addr_width_bytes - 1 - i]), 1);
408 SR_PRIV int ipdbg_la_send_trigger(struct dev_context *devc,
409 struct ipdbg_la_tcp *tcp)
414 buf = CMD_CFG_TRIGGER;
415 tcp_send(tcp, &buf, 1);
416 buf = CMD_TRIG_MASKS;
417 tcp_send(tcp, &buf, 1);
419 tcp_send(tcp, &buf, 1);
421 for (size_t i = 0; i < devc->data_width_bytes; i++)
423 devc->trigger_mask + devc->data_width_bytes - 1 - i, 1);
426 buf = CMD_CFG_TRIGGER;
427 tcp_send(tcp, &buf, 1);
428 buf = CMD_TRIG_MASKS;
429 tcp_send(tcp, &buf, 1);
430 buf = CMD_TRIG_VALUE;
431 tcp_send(tcp, &buf, 1);
433 for (size_t i = 0; i < devc->data_width_bytes; i++)
435 devc->trigger_value + devc->data_width_bytes - 1 - i, 1);
438 buf = CMD_CFG_TRIGGER;
439 tcp_send(tcp, &buf, 1);
440 buf = CMD_TRIG_MASKS_LAST;
441 tcp_send(tcp, &buf, 1);
442 buf = CMD_TRIG_MASK_LAST;
443 tcp_send(tcp, &buf, 1);
445 for (size_t i = 0; i < devc->data_width_bytes; i++)
447 devc->trigger_mask_last + devc->data_width_bytes - 1 - i, 1);
450 buf = CMD_CFG_TRIGGER;
451 tcp_send(tcp, &buf, 1);
452 buf = CMD_TRIG_MASKS_LAST;
453 tcp_send(tcp, &buf, 1);
454 buf = CMD_TRIG_VALUE_LAST;
455 tcp_send(tcp, &buf, 1);
457 for (size_t i = 0; i < devc->data_width_bytes; i++)
459 devc->trigger_value_last + devc->data_width_bytes - 1 - i, 1);
462 buf = CMD_CFG_TRIGGER;
463 tcp_send(tcp, &buf, 1);
464 buf = CMD_TRIG_SELECT_EDGE_MASK;
465 tcp_send(tcp, &buf, 1);
466 buf = CMD_TRIG_SET_EDGE_MASK;
467 tcp_send(tcp, &buf, 1);
469 for (size_t i = 0; i < devc->data_width_bytes; i++)
471 devc->trigger_edge_mask + devc->data_width_bytes - 1 - i, 1);
476 SR_PRIV void ipdbg_la_get_addrwidth_and_datawidth(
477 struct ipdbg_la_tcp *tcp, struct dev_context *devc)
480 uint8_t read_cmd = CMD_GET_BUS_WIDTHS;
482 if (tcp_send(tcp, &read_cmd, 1) != SR_OK)
483 sr_warn("Can't send read command");
485 if (tcp_receive_blocking(tcp, buf, 8) != 8)
486 sr_warn("Can't get address and data width from device");
488 devc->data_width = buf[0] & 0x000000FF;
489 devc->data_width |= (buf[1] << 8) & 0x0000FF00;
490 devc->data_width |= (buf[2] << 16) & 0x00FF0000;
491 devc->data_width |= (buf[3] << 24) & 0xFF000000;
493 devc->addr_width = buf[4] & 0x000000FF;
494 devc->addr_width |= (buf[5] << 8) & 0x0000FF00;
495 devc->addr_width |= (buf[6] << 16) & 0x00FF0000;
496 devc->addr_width |= (buf[7] << 24) & 0xFF000000;
498 const uint8_t host_word_size = 8;
500 devc->data_width_bytes =
501 (devc->data_width + host_word_size - 1) / host_word_size;
502 devc->addr_width_bytes =
503 (devc->addr_width + host_word_size - 1) / host_word_size;
505 devc->limit_samples_max = (0x01 << devc->addr_width);
506 devc->limit_samples = devc->limit_samples_max;
508 devc->trigger_mask = g_malloc0(devc->data_width_bytes);
509 devc->trigger_value = g_malloc0(devc->data_width_bytes);
510 devc->trigger_mask_last = g_malloc0(devc->data_width_bytes);
511 devc->trigger_value_last = g_malloc0(devc->data_width_bytes);
512 devc->trigger_edge_mask = g_malloc0(devc->data_width_bytes);
515 SR_PRIV struct dev_context *ipdbg_la_dev_new(void)
517 struct dev_context *devc;
519 devc = g_malloc0(sizeof(struct dev_context));
520 devc->capture_ratio = 50;
525 SR_PRIV int ipdbg_la_send_reset(struct ipdbg_la_tcp *tcp)
527 uint8_t buf = CMD_RESET;
528 if (tcp_send(tcp, &buf, 1) != SR_OK)
529 sr_warn("Couldn't send reset");
534 SR_PRIV int ipdbg_la_request_id(struct ipdbg_la_tcp *tcp)
536 uint8_t buf = CMD_GET_LA_ID;
537 if (tcp_send(tcp, &buf, 1) != SR_OK)
538 sr_warn("Couldn't send ID request");
541 if (tcp_receive_blocking(tcp, (uint8_t *)id, 4) != 4) {
542 sr_err("Couldn't read device ID");
546 if (strncmp(id, "IDBG", 4)) {
547 sr_err("Invalid device ID: expected 'IDBG', got '%c%c%c%c'.",
548 id[0], id[1], id[2], id[3]);
555 SR_PRIV void ipdbg_la_abort_acquisition(const struct sr_dev_inst *sdi)
557 struct ipdbg_la_tcp *tcp = sdi->conn;
559 sr_session_source_remove(sdi->session, tcp->socket);
561 std_session_send_df_end(sdi);
564 SR_PRIV int ipdbg_la_send_start(struct ipdbg_la_tcp *tcp)
566 uint8_t buf = CMD_START;
568 if (tcp_send(tcp, &buf, 1) != SR_OK)
569 sr_warn("Couldn't send start");