Harald Welte | f5e7264 | 2022-10-30 22:20:55 +0100 | [diff] [blame] | 1 | /* (C) 2019 by Sylvain Munaut <tnt@246tNt.com> |
| 2 | * (C) 2019-2020 by Harald Welte <laforge@gnumonks.org> |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 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 |
| 9 | * by the Free Software Foundation; either version 2 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 | |
| 18 | #include <errno.h> |
| 19 | #include <getopt.h> |
| 20 | #include <stdio.h> |
| 21 | #include <stdbool.h> |
| 22 | #include <stdint.h> |
| 23 | #include <stdlib.h> |
| 24 | #include <string.h> |
| 25 | |
| 26 | #include <sched.h> |
| 27 | #include <errno.h> |
| 28 | |
| 29 | #include <sys/time.h> |
| 30 | |
| 31 | #include <libusb.h> |
| 32 | |
| 33 | #include "idt82v2081.h" |
| 34 | #include "idt82v2081_usb.h" |
| 35 | #include "idt82v2081_regs.h" |
| 36 | |
| 37 | |
| 38 | static int g_do_exit = 0; |
| 39 | |
| 40 | #define USB_VID 0x1d50 |
| 41 | #define USB_PID 0x6151 |
| 42 | #define EP_DATA_IN0 0x81 |
| 43 | #define EP_DATA_IN1 0x82 |
| 44 | |
| 45 | struct e1_streamer; |
| 46 | struct flow; |
| 47 | |
| 48 | typedef int (*xfer_cb_t)(struct e1_streamer *e1s, struct flow *flow, uint8_t *buf, int size); |
| 49 | |
| 50 | struct flow_entry { |
| 51 | uint8_t *buf; |
| 52 | struct libusb_transfer *xfr; |
| 53 | }; |
| 54 | |
| 55 | struct flow { |
| 56 | struct e1_streamer *parent; |
| 57 | xfer_cb_t cb; |
| 58 | |
| 59 | int ep; |
| 60 | int count; |
| 61 | int size; |
| 62 | int ppx; |
| 63 | struct flow_entry *entries; |
| 64 | }; |
| 65 | |
| 66 | struct e1_streamer { |
| 67 | struct libusb_device_handle *devh; |
| 68 | struct flow data_in[2]; |
| 69 | struct idt82 liu[2]; |
| 70 | FILE *fh; |
| 71 | }; |
| 72 | |
| 73 | struct e1_chunk_hdr { |
| 74 | uint32_t magic; |
| 75 | struct { |
| 76 | uint64_t sec; |
| 77 | uint64_t usec; |
| 78 | } time; |
| 79 | int16_t len; |
| 80 | uint8_t ep; |
| 81 | } __attribute__((packed)); |
| 82 | |
| 83 | |
| 84 | static int |
| 85 | cb_xfr_data_in(struct e1_streamer *e1s, struct flow *flow, uint8_t *buf, int size) |
| 86 | { |
| 87 | struct e1_chunk_hdr hdr; |
| 88 | struct timeval tv; |
| 89 | int rc; |
| 90 | |
| 91 | hdr.magic = 0xe115600d; /* E1 is good */ |
| 92 | |
| 93 | gettimeofday(&tv, NULL); |
| 94 | hdr.time.sec = tv.tv_sec; |
| 95 | hdr.time.usec = tv.tv_usec; |
| 96 | |
| 97 | hdr.ep = flow->ep; |
| 98 | hdr.len = size; |
| 99 | |
| 100 | if (size < 0) { |
| 101 | printf("EP %02x - Err %d: %s\n", flow->ep, size, libusb_strerror(size)); |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | if (!e1s->fh) |
| 106 | return 0; |
| 107 | |
| 108 | rc = fwrite(&hdr, sizeof(struct e1_chunk_hdr), 1, e1s->fh); |
| 109 | if (rc != 1) { |
| 110 | fprintf(stderr, "[!] Short write: %d != %zd", rc, sizeof(struct e1_chunk_hdr)); |
| 111 | if (rc == -1) |
| 112 | fprintf(stderr, ", %s\n", strerror(errno)); |
| 113 | else |
| 114 | fprintf(stderr, "\n"); |
| 115 | g_do_exit = 1; |
| 116 | } |
| 117 | |
| 118 | if (size > 0) { |
| 119 | rc = fwrite(buf, size, 1, e1s->fh); |
| 120 | if (rc != 1) { |
| 121 | fprintf(stderr, "[!] Short write: %d != %zd", rc, sizeof(struct e1_chunk_hdr)); |
| 122 | if (rc == -1) |
| 123 | fprintf(stderr, ", %s\n", strerror(errno)); |
| 124 | else |
| 125 | fprintf(stderr, "\n"); |
| 126 | g_do_exit = 1; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | static void LIBUSB_CALL cb_xfr(struct libusb_transfer *xfr) |
| 134 | { |
| 135 | struct flow *flow = (struct flow *) xfr->user_data; |
| 136 | struct e1_streamer *e1s = flow->parent; |
| 137 | int j, rv, len; |
| 138 | |
| 139 | #if 0 |
| 140 | fprintf(stderr, "transfer status (%02x) %d [%d %d] [%d %d]\n", flow->ep, xfr->status, |
| 141 | xfr->iso_packet_desc[0].status, |
| 142 | xfr->iso_packet_desc[0].actual_length, |
| 143 | xfr->iso_packet_desc[1].status, |
| 144 | xfr->iso_packet_desc[1].actual_length |
| 145 | ); |
| 146 | #endif |
| 147 | |
| 148 | if (xfr->status != LIBUSB_TRANSFER_COMPLETED) { |
| 149 | fprintf(stderr, "[!] XFR status != completed (%d)\n", xfr->status); |
| 150 | g_do_exit = 1; |
| 151 | } |
| 152 | |
| 153 | len = 0; |
| 154 | |
| 155 | if (flow->ep & 0x80) { |
| 156 | for (j=0; j<flow->ppx; j++) { |
| 157 | flow->cb(e1s, flow, |
| 158 | libusb_get_iso_packet_buffer_simple(xfr, j), |
| 159 | (xfr->iso_packet_desc[j].status == LIBUSB_TRANSFER_COMPLETED) ? |
| 160 | xfr->iso_packet_desc[j].actual_length : -1 |
| 161 | ); |
| 162 | if (!(xfr->iso_packet_desc[j].status == LIBUSB_TRANSFER_COMPLETED)) { |
| 163 | fprintf(stderr, "[!] ISO packet status != completed (%d)\n", |
| 164 | xfr->iso_packet_desc[j].status); |
| 165 | } |
| 166 | |
| 167 | len += (xfr->iso_packet_desc[j].length = flow->size); |
| 168 | } |
| 169 | } else { |
| 170 | for (j=0; j<flow->ppx; j++) |
| 171 | len += (xfr->iso_packet_desc[j].length = flow->cb(e1s, flow, &xfr->buffer[len], flow->size)); |
| 172 | } |
| 173 | |
| 174 | libusb_fill_iso_transfer(xfr, e1s->devh, flow->ep, |
| 175 | xfr->buffer, len, flow->ppx, |
| 176 | cb_xfr, flow, 0 |
| 177 | ); |
| 178 | |
| 179 | rv = libusb_submit_transfer(xfr); |
| 180 | if (rv) { |
| 181 | fprintf(stderr, "[!] Error re-submitting buffer (%d): %s\n", rv, libusb_strerror(rv)); |
| 182 | g_do_exit = 1; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | |
| 187 | static void |
| 188 | _e1s_flow_fini(struct flow *flow) |
| 189 | { |
| 190 | int i; |
| 191 | |
| 192 | for (i=0; i<flow->count; i++) |
| 193 | free(flow->entries[i].buf); |
| 194 | |
| 195 | free(flow->entries); |
| 196 | } |
| 197 | |
| 198 | static void |
| 199 | _e1s_flow_init(struct e1_streamer *e1s, struct flow *flow, xfer_cb_t cb, int ep, int count, int size, int ppx) |
| 200 | { |
| 201 | int i; |
| 202 | |
| 203 | flow->parent = e1s; |
| 204 | flow->cb = cb; |
| 205 | flow->ep = ep; |
| 206 | flow->count = count; |
| 207 | flow->size = size; |
| 208 | flow->ppx = ppx; |
| 209 | flow->entries = calloc(count, sizeof(struct flow_entry)); |
| 210 | |
| 211 | for (i=0; i<count; i++) |
| 212 | flow->entries[i].buf = malloc(size * ppx); |
| 213 | } |
| 214 | |
| 215 | static int |
| 216 | _e1s_flow_start(struct e1_streamer *e1s, struct flow *flow) |
| 217 | { |
| 218 | struct libusb_transfer *xfr; |
| 219 | int i, j, rv, len; |
| 220 | |
| 221 | for (i=0; i<flow->count; i++) |
| 222 | { |
| 223 | xfr = libusb_alloc_transfer(flow->ppx); |
| 224 | if (!xfr) |
| 225 | return -ENOMEM; |
| 226 | |
| 227 | len = 0; |
| 228 | |
| 229 | if (flow->ep & 0x80) { |
| 230 | for (j=0; j<flow->ppx; j++) |
| 231 | len += (xfr->iso_packet_desc[j].length = flow->size); |
| 232 | } else { |
| 233 | for (j=0; j<flow->ppx; j++) |
| 234 | len += (xfr->iso_packet_desc[j].length = flow->cb(e1s, flow, &flow->entries[i].buf[len], flow->size)); |
| 235 | } |
| 236 | |
| 237 | libusb_fill_iso_transfer(xfr, e1s->devh, flow->ep, |
| 238 | flow->entries[i].buf, len, flow->ppx, |
| 239 | cb_xfr, flow, 0 |
| 240 | ); |
| 241 | |
| 242 | rv = libusb_submit_transfer(xfr); |
| 243 | if (rv) { |
| 244 | return rv; |
| 245 | } |
| 246 | |
| 247 | flow->entries[i].xfr = xfr; |
| 248 | } |
| 249 | |
| 250 | return 0; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | static void |
| 255 | e1s_release(struct e1_streamer *e1s) |
| 256 | { |
| 257 | if (!e1s) |
| 258 | return; |
| 259 | |
| 260 | _e1s_flow_fini(&e1s->data_in[0]); |
| 261 | _e1s_flow_fini(&e1s->data_in[1]); |
| 262 | |
| 263 | if (e1s->devh) { |
| 264 | libusb_release_interface(e1s->devh, 0); |
| 265 | libusb_close(e1s->devh); |
| 266 | } |
| 267 | |
| 268 | free(e1s); |
| 269 | } |
| 270 | |
| 271 | static struct e1_streamer * |
| 272 | e1s_new(bool monitor, const char *out_file, bool append, int nx, int ppx) |
| 273 | { |
| 274 | struct e1_streamer *e1s = NULL; |
| 275 | int rv; |
| 276 | |
| 277 | e1s = calloc(1, sizeof(struct e1_streamer)); |
| 278 | if (!e1s) |
| 279 | return NULL; |
| 280 | |
| 281 | e1s->devh = libusb_open_device_with_vid_pid(NULL, USB_VID, USB_PID); |
| 282 | if (!e1s->devh) { |
| 283 | fprintf(stderr, "Error finding USB device\n"); |
| 284 | goto err; |
| 285 | } |
| 286 | |
| 287 | rv = libusb_claim_interface(e1s->devh, 0); |
| 288 | if (rv < 0) { |
| 289 | fprintf(stderr, "Error claiming interface: %s\n", libusb_error_name(rv)); |
| 290 | goto err; |
| 291 | } |
| 292 | |
| 293 | rv = libusb_set_interface_alt_setting(e1s->devh, 0, 1); |
| 294 | if (rv < 0) { |
| 295 | fprintf(stderr, "Error enabling interface: %s\n", libusb_error_name(rv)); |
| 296 | goto err; |
| 297 | } |
| 298 | |
| 299 | _e1s_flow_init(e1s, &e1s->data_in[0], cb_xfr_data_in, EP_DATA_IN0, nx, 388, ppx); |
| 300 | _e1s_flow_init(e1s, &e1s->data_in[1], cb_xfr_data_in, EP_DATA_IN1, nx, 388, ppx); |
| 301 | |
| 302 | idt82_usb_init(&e1s->liu[0], e1s->devh, EP_DATA_IN0); |
| 303 | idt82_usb_init(&e1s->liu[1], e1s->devh, EP_DATA_IN1); |
| 304 | idt82_init(&e1s->liu[0], monitor); |
| 305 | idt82_init(&e1s->liu[1], monitor); |
| 306 | |
| 307 | if (out_file) { |
| 308 | e1s->fh = fopen(out_file, append ? "ab" : "wb"); |
| 309 | if (!e1s->fh) |
| 310 | fprintf(stderr, "[1] Failed to open recording file\n"); |
| 311 | } |
| 312 | |
| 313 | return e1s; |
| 314 | |
| 315 | err: |
| 316 | e1s_release(e1s); |
| 317 | return NULL; |
| 318 | } |
| 319 | |
| 320 | struct options { |
| 321 | /* Transfer config */ |
| 322 | int nx; |
| 323 | int ppx; |
| 324 | |
| 325 | /* Output */ |
| 326 | const char *out_filename; |
| 327 | bool out_append; |
| 328 | |
| 329 | /* PHY */ |
| 330 | bool monitor; |
| 331 | |
| 332 | /* OS */ |
| 333 | bool realtime; |
| 334 | }; |
| 335 | |
| 336 | static void |
| 337 | opts_defaults(struct options *opts) |
| 338 | { |
| 339 | memset(opts, 0x00, sizeof(struct options)); |
| 340 | |
| 341 | opts->nx = 2; |
| 342 | opts->ppx = 4; |
| 343 | } |
| 344 | |
| 345 | static void |
| 346 | opts_help(void) |
| 347 | { |
| 348 | fprintf(stderr, " -a Output : append mode\n"); |
| 349 | fprintf(stderr, " -o FILE Output : filename\n"); |
| 350 | fprintf(stderr, " -n NX Xfer : Number of queued transfers (default: 2)\n"); |
| 351 | fprintf(stderr, " -p PPX Xfer : Number of packets per transfer (default: 4)\n"); |
| 352 | fprintf(stderr, " -m PHY : Monitor mode (i.e. high gain)\n"); |
| 353 | fprintf(stderr, " -r OS : Set real-time priority on process\n"); |
| 354 | fprintf(stderr, " -h help\n"); |
| 355 | } |
| 356 | |
| 357 | static int |
| 358 | opts_parse(struct options *opts, int argc, char *argv[]) |
| 359 | { |
| 360 | const char *opts_short = "ao:n:p:mrh"; |
| 361 | int opt; |
| 362 | |
| 363 | while ((opt = getopt(argc, argv, opts_short)) != -1) |
| 364 | { |
| 365 | switch(opt) { |
| 366 | case 'a': |
| 367 | opts->out_append = true; |
| 368 | break; |
| 369 | |
| 370 | case 'o': |
| 371 | opts->out_filename = optarg; |
| 372 | break; |
| 373 | |
| 374 | case 'n': |
| 375 | opts->nx = atoi(optarg); |
| 376 | if (opts->nx <= 0) { |
| 377 | fprintf(stderr, "[!] Invalid nx value ignored\n"); |
| 378 | opts->nx = 2; |
| 379 | } |
| 380 | break; |
| 381 | |
| 382 | case 'p': |
| 383 | opts->ppx = atoi(optarg); |
| 384 | if (opts->ppx <= 0) { |
| 385 | fprintf(stderr, "[!] Invalid ppx value ignored\n"); |
| 386 | opts->ppx = 4; |
| 387 | } |
| 388 | break; |
| 389 | |
| 390 | case 'm': |
| 391 | opts->monitor = true; |
| 392 | break; |
| 393 | |
| 394 | case 'r': |
| 395 | opts->realtime = true; |
| 396 | break; |
| 397 | |
| 398 | case 'h': |
| 399 | default: |
| 400 | opts_help(); |
| 401 | exit(1); |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | return 0; |
| 406 | } |
| 407 | |
| 408 | int main(int argc, char *argv[]) |
| 409 | { |
| 410 | struct e1_streamer *e1s; |
| 411 | struct sched_param sp; |
| 412 | struct options opts; |
| 413 | int rv; |
| 414 | |
| 415 | opts_defaults(&opts); |
| 416 | opts_parse(&opts, argc, argv); |
| 417 | |
| 418 | if (opts.realtime) { |
| 419 | memset(&sp, 0x00, sizeof(sp)); |
| 420 | sp.sched_priority = 50; |
| 421 | rv = sched_setscheduler(0, SCHED_RR, &sp); |
| 422 | printf("%d %d\n", rv, errno); |
| 423 | perror("sched_setscheduler"); |
| 424 | } |
| 425 | |
| 426 | rv = libusb_init(NULL); |
| 427 | if (rv < 0) { |
| 428 | fprintf(stderr, "Error initializing libusb: %s\n", libusb_error_name(rv)); |
| 429 | return rv; |
| 430 | } |
| 431 | |
| 432 | e1s = e1s_new(opts.monitor, opts.out_filename, opts.out_append, opts.nx, opts.ppx); |
| 433 | if (!e1s) |
| 434 | goto out; |
| 435 | |
| 436 | _e1s_flow_start(e1s, &e1s->data_in[0]); |
| 437 | _e1s_flow_start(e1s, &e1s->data_in[1]); |
| 438 | |
| 439 | while (!g_do_exit) { |
| 440 | rv = libusb_handle_events(NULL); |
| 441 | if (rv != LIBUSB_SUCCESS) |
| 442 | break; |
| 443 | } |
| 444 | |
| 445 | out: |
| 446 | e1s_release(e1s); |
| 447 | |
| 448 | libusb_exit(NULL); |
| 449 | |
| 450 | return 0; |
| 451 | } |