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aeaad0b0 DE |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.com> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
6ec6c43b | 20 | #include <config.h> |
5874e88d DE |
21 | #include <glib.h> |
22 | #include <libusb.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
c1aae900 | 25 | #include <libsigrok/libsigrok.h> |
407b6e2c | 26 | #include <libsigrok-internal.h> |
515ab088 | 27 | #include "protocol.h" |
5874e88d | 28 | |
be64f90b DE |
29 | /* Supported device scan options. |
30 | */ | |
a0e0bb41 | 31 | static const uint32_t scanopts[] = { |
99c76642 DE |
32 | SR_CONF_CONN, |
33 | }; | |
34 | ||
be64f90b DE |
35 | /* Driver capabilities. |
36 | */ | |
37 | static const uint32_t drvopts[] = { | |
5874e88d | 38 | SR_CONF_LOGIC_ANALYZER, |
5874e88d DE |
39 | }; |
40 | ||
be64f90b DE |
41 | /* Supported trigger match conditions. |
42 | */ | |
bbe7e48a BV |
43 | static const int32_t trigger_matches[] = { |
44 | SR_TRIGGER_ZERO, | |
45 | SR_TRIGGER_ONE, | |
46 | SR_TRIGGER_RISING, | |
47 | SR_TRIGGER_FALLING, | |
48 | }; | |
49 | ||
be64f90b | 50 | /* Names assigned to available trigger sources. |
5874e88d | 51 | */ |
be64f90b DE |
52 | static const char *const trigger_source_names[] = { |
53 | [TRIGGER_CHANNELS] = "CH", | |
54 | [TRIGGER_EXT_TRG] = "TRG", | |
5874e88d | 55 | }; |
aeaad0b0 | 56 | |
be64f90b | 57 | /* Names assigned to available edge slope choices. |
e6e54bd2 | 58 | */ |
be64f90b DE |
59 | static const char *const signal_edge_names[] = { |
60 | [EDGE_POSITIVE] = "r", | |
61 | [EDGE_NEGATIVE] = "f", | |
62 | }; | |
e6e54bd2 | 63 | |
be64f90b | 64 | /* Initialize the SysClk LWLA driver. |
e6e54bd2 | 65 | */ |
4f840ce9 | 66 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
aeaad0b0 | 67 | { |
1f8f5bc0 | 68 | return std_init(di, sr_ctx, LOG_PREFIX); |
aeaad0b0 DE |
69 | } |
70 | ||
be64f90b DE |
71 | /* Create a new sigrok device instance for the indicated LWLA model. |
72 | */ | |
73 | static struct sr_dev_inst *dev_inst_new(const struct model_info *model) | |
43db3436 DE |
74 | { |
75 | struct sr_dev_inst *sdi; | |
76 | struct dev_context *devc; | |
5e23fcab ML |
77 | int i; |
78 | char name[8]; | |
43db3436 | 79 | |
be64f90b | 80 | /* Initialize private device context. */ |
f57d8ffe | 81 | devc = g_malloc0(sizeof(struct dev_context)); |
be64f90b DE |
82 | devc->model = model; |
83 | devc->active_fpga_config = FPGA_NOCONF; | |
84 | devc->cfg_rle = TRUE; | |
85 | devc->samplerate = model->samplerates[0]; | |
86 | devc->channel_mask = (UINT64_C(1) << model->num_channels) - 1; | |
43db3436 | 87 | |
be64f90b | 88 | /* Create sigrok device instance. */ |
aac29cc1 | 89 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
90 | sdi->status = SR_ST_INACTIVE; |
91 | sdi->vendor = g_strdup(VENDOR_NAME); | |
be64f90b | 92 | sdi->model = g_strdup(model->name); |
43db3436 | 93 | sdi->priv = devc; |
be64f90b DE |
94 | |
95 | /* Generate list of logic channels. */ | |
96 | for (i = 0; i < model->num_channels; i++) { | |
5e23fcab | 97 | /* The LWLA series simply number channels from CH1 to CHxx. */ |
fe473123 DE |
98 | g_snprintf(name, sizeof(name), "CH%d", i + 1); |
99 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, name); | |
5e23fcab | 100 | } |
43db3436 DE |
101 | |
102 | return sdi; | |
103 | } | |
104 | ||
be64f90b DE |
105 | /* Create a new device instance for a libusb device if it is a SysClk LWLA |
106 | * device and also matches the connection specification. | |
107 | */ | |
108 | static struct sr_dev_inst *dev_inst_new_matching(GSList *conn_matches, | |
109 | libusb_device *dev) | |
110 | { | |
111 | GSList *node; | |
112 | struct sr_usb_dev_inst *usb; | |
113 | const struct model_info *model; | |
114 | struct sr_dev_inst *sdi; | |
115 | struct libusb_device_descriptor des; | |
d64b5f43 | 116 | int bus, address, ret; |
be64f90b | 117 | unsigned int vid, pid; |
be64f90b DE |
118 | |
119 | bus = libusb_get_bus_number(dev); | |
120 | address = libusb_get_device_address(dev); | |
121 | ||
122 | for (node = conn_matches; node != NULL; node = node->next) { | |
123 | usb = node->data; | |
124 | if (usb && usb->bus == bus && usb->address == address) | |
125 | break; /* found */ | |
126 | } | |
127 | if (conn_matches && !node) | |
128 | return NULL; /* no match */ | |
129 | ||
130 | ret = libusb_get_device_descriptor(dev, &des); | |
131 | if (ret != 0) { | |
132 | sr_err("Failed to get USB device descriptor: %s.", | |
133 | libusb_error_name(ret)); | |
134 | return NULL; | |
135 | } | |
136 | vid = des.idVendor; | |
137 | pid = des.idProduct; | |
138 | ||
139 | /* Create sigrok device instance. */ | |
140 | if (vid == USB_VID_SYSCLK && pid == USB_PID_LWLA1016) { | |
141 | model = &lwla1016_info; | |
142 | } else if (vid == USB_VID_SYSCLK && pid == USB_PID_LWLA1034) { | |
143 | model = &lwla1034_info; | |
144 | } else { | |
145 | if (conn_matches) | |
146 | sr_warn("USB device %d.%d (%04x:%04x) is not a" | |
147 | " SysClk LWLA.", bus, address, vid, pid); | |
148 | return NULL; | |
149 | } | |
150 | sdi = dev_inst_new(model); | |
151 | ||
152 | sdi->inst_type = SR_INST_USB; | |
153 | sdi->conn = sr_usb_dev_inst_new(bus, address, NULL); | |
154 | ||
155 | return sdi; | |
156 | } | |
157 | ||
158 | /* Scan for SysClk LWLA devices and create a device instance for each one. | |
159 | */ | |
4f840ce9 | 160 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
aeaad0b0 | 161 | { |
be64f90b | 162 | GSList *conn_devices, *devices, *node; |
aeaad0b0 | 163 | struct drv_context *drvc; |
5874e88d | 164 | struct sr_dev_inst *sdi; |
7ebe9b9e DE |
165 | struct sr_config *src; |
166 | const char *conn; | |
be64f90b DE |
167 | libusb_device **devlist; |
168 | ssize_t num_devs, i; | |
aeaad0b0 | 169 | |
41812aca | 170 | drvc = di->context; |
be64f90b DE |
171 | conn = NULL; |
172 | conn_devices = NULL; | |
173 | devices = NULL; | |
5874e88d | 174 | |
7ebe9b9e DE |
175 | for (node = options; node != NULL; node = node->next) { |
176 | src = node->data; | |
177 | if (src->key == SR_CONF_CONN) { | |
178 | conn = g_variant_get_string(src->data, NULL); | |
179 | break; | |
180 | } | |
181 | } | |
be64f90b DE |
182 | if (conn) { |
183 | /* Find devices matching the connection specification. */ | |
184 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
185 | } | |
5874e88d | 186 | |
be64f90b DE |
187 | /* List all libusb devices. */ |
188 | num_devs = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
189 | if (num_devs < 0) { | |
190 | sr_err("Failed to list USB devices: %s.", | |
191 | libusb_error_name(num_devs)); | |
192 | g_slist_free_full(conn_devices, | |
193 | (GDestroyNotify)&sr_usb_dev_inst_free); | |
194 | return NULL; | |
195 | } | |
5874e88d | 196 | |
be64f90b DE |
197 | /* Scan the USB device list for matching LWLA devices. */ |
198 | for (i = 0; i < num_devs; i++) { | |
199 | sdi = dev_inst_new_matching(conn_devices, devlist[i]); | |
200 | if (!sdi) | |
201 | continue; /* no match */ | |
5874e88d | 202 | |
43db3436 | 203 | /* Register device instance with driver. */ |
be64f90b | 204 | sdi->driver = di; |
5874e88d DE |
205 | drvc->instances = g_slist_append(drvc->instances, sdi); |
206 | devices = g_slist_append(devices, sdi); | |
207 | } | |
aeaad0b0 | 208 | |
be64f90b DE |
209 | libusb_free_device_list(devlist, 1); |
210 | g_slist_free_full(conn_devices, (GDestroyNotify)&sr_usb_dev_inst_free); | |
aeaad0b0 DE |
211 | |
212 | return devices; | |
213 | } | |
214 | ||
be64f90b DE |
215 | /* Destroy the private device context. |
216 | */ | |
5874e88d DE |
217 | static void clear_dev_context(void *priv) |
218 | { | |
219 | struct dev_context *devc; | |
220 | ||
221 | devc = priv; | |
222 | ||
be64f90b DE |
223 | if (devc->acquisition) { |
224 | sr_err("Cannot clear device context during acquisition!"); | |
d64b5f43 | 225 | return; /* Leak and pray. */ |
be64f90b | 226 | } |
5874e88d DE |
227 | sr_dbg("Device context cleared."); |
228 | ||
5874e88d | 229 | g_free(devc); |
aeaad0b0 DE |
230 | } |
231 | ||
be64f90b DE |
232 | /* Destroy all device instances. |
233 | */ | |
4f840ce9 | 234 | static int dev_clear(const struct sr_dev_driver *di) |
aeaad0b0 | 235 | { |
5874e88d | 236 | return std_dev_clear(di, &clear_dev_context); |
aeaad0b0 DE |
237 | } |
238 | ||
93ed0241 DE |
239 | /* Drain any pending data from the USB transfer buffers on the device. |
240 | * This may be necessary e.g. after a crash or generally to clean up after | |
241 | * an abnormal condition. | |
242 | */ | |
243 | static int drain_usb(struct sr_usb_dev_inst *usb, unsigned int endpoint) | |
244 | { | |
d64b5f43 | 245 | int drained, xfer_len, ret; |
93ed0241 | 246 | unsigned char buf[512]; |
93ed0241 DE |
247 | const unsigned int drain_timeout_ms = 10; |
248 | ||
249 | drained = 0; | |
250 | do { | |
251 | xfer_len = 0; | |
252 | ret = libusb_bulk_transfer(usb->devhdl, endpoint, | |
b3cfc6e9 | 253 | buf, sizeof(buf), &xfer_len, |
93ed0241 DE |
254 | drain_timeout_ms); |
255 | drained += xfer_len; | |
256 | } while (ret == LIBUSB_SUCCESS && xfer_len != 0); | |
257 | ||
258 | if (ret != LIBUSB_SUCCESS && ret != LIBUSB_ERROR_TIMEOUT) { | |
259 | sr_err("Failed to drain USB endpoint %u: %s.", | |
260 | endpoint & (LIBUSB_ENDPOINT_IN - 1), | |
261 | libusb_error_name(ret)); | |
262 | return SR_ERR; | |
263 | } | |
264 | if (drained > 0) { | |
265 | sr_warn("Drained %d bytes from USB endpoint %u.", | |
266 | drained, endpoint & (LIBUSB_ENDPOINT_IN - 1)); | |
267 | } | |
d64b5f43 | 268 | |
93ed0241 DE |
269 | return SR_OK; |
270 | } | |
271 | ||
be64f90b DE |
272 | /* Open and initialize device. |
273 | */ | |
aeaad0b0 DE |
274 | static int dev_open(struct sr_dev_inst *sdi) |
275 | { | |
5874e88d | 276 | struct drv_context *drvc; |
be64f90b | 277 | struct dev_context *devc; |
5874e88d | 278 | struct sr_usb_dev_inst *usb; |
d64b5f43 | 279 | int i, ret; |
aeaad0b0 | 280 | |
ce19d4c6 | 281 | drvc = sdi->driver->context; |
be64f90b DE |
282 | devc = sdi->priv; |
283 | usb = sdi->conn; | |
aeaad0b0 | 284 | |
c81069b3 DE |
285 | if (sdi->status != SR_ST_INACTIVE) { |
286 | sr_err("Device already open."); | |
287 | return SR_ERR; | |
288 | } | |
5874e88d | 289 | |
e35a4592 DE |
290 | /* Try the whole shebang three times, fingers crossed. */ |
291 | for (i = 0; i < 3; i++) { | |
292 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
293 | if (ret != SR_OK) | |
294 | return ret; | |
295 | ||
296 | ret = libusb_set_configuration(usb->devhdl, USB_CONFIG); | |
297 | if (ret != LIBUSB_SUCCESS) { | |
298 | sr_err("Failed to set USB configuration: %s.", | |
299 | libusb_error_name(ret)); | |
300 | sr_usb_close(usb); | |
301 | return SR_ERR; | |
302 | } | |
ad6181e2 | 303 | |
e35a4592 DE |
304 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); |
305 | if (ret != LIBUSB_SUCCESS) { | |
306 | sr_err("Failed to claim interface: %s.", | |
307 | libusb_error_name(ret)); | |
308 | sr_usb_close(usb); | |
309 | return SR_ERR; | |
310 | } | |
be64f90b | 311 | |
e35a4592 DE |
312 | ret = drain_usb(usb, EP_REPLY); |
313 | if (ret != SR_OK) { | |
314 | sr_usb_close(usb); | |
315 | return ret; | |
316 | } | |
317 | /* This delay appears to be necessary for reliable operation. */ | |
318 | g_usleep(30 * 1000); | |
93ed0241 | 319 | |
e35a4592 | 320 | sdi->status = SR_ST_ACTIVE; |
5874e88d | 321 | |
e35a4592 DE |
322 | devc->active_fpga_config = FPGA_NOCONF; |
323 | devc->short_transfer_quirk = FALSE; | |
324 | devc->state = STATE_IDLE; | |
be64f90b | 325 | |
e35a4592 | 326 | ret = (*devc->model->apply_fpga_config)(sdi); |
be64f90b | 327 | |
e35a4592 DE |
328 | if (ret == SR_OK) |
329 | ret = (*devc->model->device_init_check)(sdi); | |
330 | if (ret == SR_OK) | |
331 | break; | |
be64f90b | 332 | |
e35a4592 | 333 | /* Rinse and repeat. */ |
c81069b3 | 334 | sdi->status = SR_ST_INACTIVE; |
be64f90b | 335 | sr_usb_close(usb); |
c81069b3 | 336 | } |
e35a4592 DE |
337 | |
338 | if (ret == SR_OK && devc->short_transfer_quirk) | |
78648577 DE |
339 | sr_warn("Short transfer quirk detected! " |
340 | "Memory reads will be slow."); | |
e35a4592 | 341 | return ret; |
aeaad0b0 DE |
342 | } |
343 | ||
be64f90b DE |
344 | /* Shutdown and close device. |
345 | */ | |
aeaad0b0 DE |
346 | static int dev_close(struct sr_dev_inst *sdi) |
347 | { | |
c81069b3 | 348 | struct dev_context *devc; |
be64f90b | 349 | struct sr_usb_dev_inst *usb; |
c81069b3 | 350 | int ret; |
5874e88d | 351 | |
be64f90b DE |
352 | devc = sdi->priv; |
353 | usb = sdi->conn; | |
354 | ||
be64f90b DE |
355 | if (sdi->status == SR_ST_INACTIVE) { |
356 | sr_dbg("Device already closed."); | |
5874e88d | 357 | return SR_OK; |
c81069b3 | 358 | } |
be64f90b DE |
359 | if (devc->acquisition) { |
360 | sr_err("Cannot close device during acquisition!"); | |
361 | /* Request stop, leak handle, and prepare for the worst. */ | |
362 | devc->cancel_requested = TRUE; | |
363 | return SR_ERR_BUG; | |
364 | } | |
365 | ||
6358f0a9 | 366 | sdi->status = SR_ST_INACTIVE; |
5874e88d | 367 | |
be64f90b DE |
368 | /* Download of the shutdown bitstream, if any. */ |
369 | ret = (*devc->model->apply_fpga_config)(sdi); | |
c81069b3 | 370 | if (ret != SR_OK) |
be64f90b | 371 | sr_warn("Unable to shut down device."); |
5874e88d DE |
372 | |
373 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
c81069b3 | 374 | sr_usb_close(usb); |
5874e88d | 375 | |
c81069b3 | 376 | return ret; |
aeaad0b0 DE |
377 | } |
378 | ||
be64f90b DE |
379 | /* Check whether the device options contain a specific key. |
380 | * Also match against get/set/list bits if specified. | |
381 | */ | |
382 | static int has_devopt(const struct model_info *model, uint32_t key) | |
aeaad0b0 | 383 | { |
be64f90b DE |
384 | unsigned int i; |
385 | ||
386 | for (i = 0; i < model->num_devopts; i++) { | |
387 | if ((model->devopts[i] & (SR_CONF_MASK | key)) == key) | |
388 | return TRUE; | |
389 | } | |
d64b5f43 | 390 | |
be64f90b | 391 | return FALSE; |
aeaad0b0 DE |
392 | } |
393 | ||
be64f90b DE |
394 | /* Read device configuration setting. |
395 | */ | |
584560f1 | 396 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 397 | const struct sr_channel_group *cg) |
aeaad0b0 | 398 | { |
5874e88d | 399 | struct dev_context *devc; |
7ed80817 | 400 | unsigned int idx; |
aeaad0b0 | 401 | |
53b4680f | 402 | (void)cg; |
aeaad0b0 | 403 | |
5874e88d DE |
404 | if (!sdi) |
405 | return SR_ERR_ARG; | |
406 | ||
407 | devc = sdi->priv; | |
408 | ||
be64f90b DE |
409 | if (!has_devopt(devc->model, key | SR_CONF_GET)) |
410 | return SR_ERR_NA; | |
411 | ||
aeaad0b0 | 412 | switch (key) { |
5874e88d DE |
413 | case SR_CONF_SAMPLERATE: |
414 | *data = g_variant_new_uint64(devc->samplerate); | |
415 | break; | |
29d58767 DE |
416 | case SR_CONF_LIMIT_MSEC: |
417 | *data = g_variant_new_uint64(devc->limit_msec); | |
418 | break; | |
5874e88d DE |
419 | case SR_CONF_LIMIT_SAMPLES: |
420 | *data = g_variant_new_uint64(devc->limit_samples); | |
421 | break; | |
be64f90b DE |
422 | case SR_CONF_RLE: |
423 | *data = g_variant_new_boolean(devc->cfg_rle); | |
424 | break; | |
5874e88d | 425 | case SR_CONF_EXTERNAL_CLOCK: |
6358f0a9 DE |
426 | *data = g_variant_new_boolean(devc->cfg_clock_source |
427 | == CLOCK_EXT_CLK); | |
428 | break; | |
429 | case SR_CONF_CLOCK_EDGE: | |
430 | idx = devc->cfg_clock_edge; | |
ce3ecb70 | 431 | if (idx >= ARRAY_SIZE(signal_edge_names)) |
6358f0a9 DE |
432 | return SR_ERR_BUG; |
433 | *data = g_variant_new_string(signal_edge_names[idx]); | |
5874e88d | 434 | break; |
e6e54bd2 DE |
435 | case SR_CONF_TRIGGER_SOURCE: |
436 | idx = devc->cfg_trigger_source; | |
ce3ecb70 | 437 | if (idx >= ARRAY_SIZE(trigger_source_names)) |
e6e54bd2 DE |
438 | return SR_ERR_BUG; |
439 | *data = g_variant_new_string(trigger_source_names[idx]); | |
440 | break; | |
441 | case SR_CONF_TRIGGER_SLOPE: | |
442 | idx = devc->cfg_trigger_slope; | |
ce3ecb70 | 443 | if (idx >= ARRAY_SIZE(signal_edge_names)) |
e6e54bd2 | 444 | return SR_ERR_BUG; |
6358f0a9 | 445 | *data = g_variant_new_string(signal_edge_names[idx]); |
e6e54bd2 | 446 | break; |
aeaad0b0 | 447 | default: |
be64f90b DE |
448 | /* Must not happen for a key listed in devopts. */ |
449 | return SR_ERR_BUG; | |
aeaad0b0 DE |
450 | } |
451 | ||
5874e88d | 452 | return SR_OK; |
aeaad0b0 DE |
453 | } |
454 | ||
e6e54bd2 DE |
455 | /* Helper for mapping a string-typed configuration value to an index |
456 | * within a table of possible values. | |
457 | */ | |
458 | static int lookup_index(GVariant *value, const char *const *table, int len) | |
459 | { | |
460 | const char *entry; | |
461 | int i; | |
462 | ||
463 | entry = g_variant_get_string(value, NULL); | |
464 | if (!entry) | |
465 | return -1; | |
466 | ||
467 | /* Linear search is fine for very small tables. */ | |
0a1f7b09 | 468 | for (i = 0; i < len; i++) { |
e6e54bd2 DE |
469 | if (strcmp(entry, table[i]) == 0) |
470 | return i; | |
471 | } | |
d64b5f43 | 472 | |
e6e54bd2 DE |
473 | return -1; |
474 | } | |
475 | ||
be64f90b DE |
476 | /* Write device configuration setting. |
477 | */ | |
584560f1 | 478 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 479 | const struct sr_channel_group *cg) |
aeaad0b0 | 480 | { |
29d58767 | 481 | uint64_t value; |
5874e88d | 482 | struct dev_context *devc; |
e6e54bd2 | 483 | int idx; |
aeaad0b0 | 484 | |
53b4680f | 485 | (void)cg; |
aeaad0b0 | 486 | |
be64f90b DE |
487 | if (!sdi) |
488 | return SR_ERR_ARG; | |
489 | ||
5874e88d | 490 | devc = sdi->priv; |
be64f90b DE |
491 | |
492 | if (!has_devopt(devc->model, key | SR_CONF_SET)) | |
493 | return SR_ERR_NA; | |
aeaad0b0 | 494 | |
aeaad0b0 | 495 | switch (key) { |
5874e88d | 496 | case SR_CONF_SAMPLERATE: |
29d58767 | 497 | value = g_variant_get_uint64(data); |
be64f90b DE |
498 | if (value < devc->model->samplerates[devc->model->num_samplerates - 1] |
499 | || value > devc->model->samplerates[0]) | |
5874e88d | 500 | return SR_ERR_SAMPLERATE; |
29d58767 DE |
501 | devc->samplerate = value; |
502 | break; | |
503 | case SR_CONF_LIMIT_MSEC: | |
504 | value = g_variant_get_uint64(data); | |
505 | if (value > MAX_LIMIT_MSEC) | |
506 | return SR_ERR_ARG; | |
507 | devc->limit_msec = value; | |
5874e88d DE |
508 | break; |
509 | case SR_CONF_LIMIT_SAMPLES: | |
29d58767 DE |
510 | value = g_variant_get_uint64(data); |
511 | if (value > MAX_LIMIT_SAMPLES) | |
512 | return SR_ERR_ARG; | |
513 | devc->limit_samples = value; | |
5874e88d | 514 | break; |
be64f90b DE |
515 | case SR_CONF_RLE: |
516 | devc->cfg_rle = g_variant_get_boolean(data); | |
517 | break; | |
5874e88d | 518 | case SR_CONF_EXTERNAL_CLOCK: |
6358f0a9 DE |
519 | devc->cfg_clock_source = (g_variant_get_boolean(data)) |
520 | ? CLOCK_EXT_CLK : CLOCK_INTERNAL; | |
521 | break; | |
522 | case SR_CONF_CLOCK_EDGE: | |
523 | idx = lookup_index(data, signal_edge_names, | |
ce3ecb70 | 524 | ARRAY_SIZE(signal_edge_names)); |
6358f0a9 DE |
525 | if (idx < 0) |
526 | return SR_ERR_ARG; | |
527 | devc->cfg_clock_edge = idx; | |
5874e88d | 528 | break; |
e6e54bd2 DE |
529 | case SR_CONF_TRIGGER_SOURCE: |
530 | idx = lookup_index(data, trigger_source_names, | |
ce3ecb70 | 531 | ARRAY_SIZE(trigger_source_names)); |
e6e54bd2 DE |
532 | if (idx < 0) |
533 | return SR_ERR_ARG; | |
534 | devc->cfg_trigger_source = idx; | |
535 | break; | |
536 | case SR_CONF_TRIGGER_SLOPE: | |
6358f0a9 | 537 | idx = lookup_index(data, signal_edge_names, |
ce3ecb70 | 538 | ARRAY_SIZE(signal_edge_names)); |
e6e54bd2 DE |
539 | if (idx < 0) |
540 | return SR_ERR_ARG; | |
541 | devc->cfg_trigger_slope = idx; | |
542 | break; | |
aeaad0b0 | 543 | default: |
be64f90b DE |
544 | /* Must not happen for a key listed in devopts. */ |
545 | return SR_ERR_BUG; | |
aeaad0b0 DE |
546 | } |
547 | ||
5874e88d | 548 | return SR_OK; |
aeaad0b0 DE |
549 | } |
550 | ||
be64f90b DE |
551 | /* Apply channel configuration change. |
552 | */ | |
f3ca73ed | 553 | static int config_channel_set(const struct sr_dev_inst *sdi, |
be64f90b | 554 | struct sr_channel *ch, unsigned int changes) |
43db3436 | 555 | { |
ba7dd8bb | 556 | uint64_t channel_bit; |
43db3436 DE |
557 | struct dev_context *devc; |
558 | ||
be64f90b DE |
559 | if (!sdi) |
560 | return SR_ERR_ARG; | |
561 | ||
43db3436 | 562 | devc = sdi->priv; |
43db3436 | 563 | |
be64f90b | 564 | if (ch->index < 0 || ch->index >= devc->model->num_channels) { |
ba7dd8bb | 565 | sr_err("Channel index %d out of range.", ch->index); |
43db3436 DE |
566 | return SR_ERR_BUG; |
567 | } | |
43db3436 | 568 | |
3f239f08 | 569 | if ((changes & SR_CHANNEL_SET_ENABLED) != 0) { |
be64f90b DE |
570 | channel_bit = UINT64_C(1) << ch->index; |
571 | ||
572 | /* Enable or disable logic input for this channel. */ | |
ba7dd8bb UH |
573 | if (ch->enabled) |
574 | devc->channel_mask |= channel_bit; | |
43db3436 | 575 | else |
ba7dd8bb | 576 | devc->channel_mask &= ~channel_bit; |
43db3436 DE |
577 | } |
578 | ||
43db3436 DE |
579 | return SR_OK; |
580 | } | |
581 | ||
be64f90b DE |
582 | /* Derive trigger masks from the session's trigger configuration. |
583 | */ | |
225d3cb0 DE |
584 | static int prepare_trigger_masks(const struct sr_dev_inst *sdi) |
585 | { | |
d64b5f43 | 586 | uint64_t trigger_mask, trigger_values, trigger_edge_mask; |
09ffac33 | 587 | uint64_t level_bit, type_bit; |
225d3cb0 DE |
588 | struct dev_context *devc; |
589 | struct sr_trigger *trigger; | |
590 | struct sr_trigger_stage *stage; | |
591 | struct sr_trigger_match *match; | |
592 | const GSList *node; | |
be64f90b | 593 | int idx; |
09ffac33 | 594 | enum sr_trigger_matches trg; |
225d3cb0 DE |
595 | |
596 | devc = sdi->priv; | |
597 | ||
598 | trigger = sr_session_trigger_get(sdi->session); | |
599 | if (!trigger || !trigger->stages) | |
600 | return SR_OK; | |
601 | ||
602 | if (trigger->stages->next) { | |
603 | sr_err("This device only supports 1 trigger stage."); | |
604 | return SR_ERR_ARG; | |
605 | } | |
606 | stage = trigger->stages->data; | |
607 | ||
608 | trigger_mask = 0; | |
609 | trigger_values = 0; | |
610 | trigger_edge_mask = 0; | |
611 | ||
612 | for (node = stage->matches; node; node = node->next) { | |
613 | match = node->data; | |
614 | ||
615 | if (!match->channel->enabled) | |
d64b5f43 | 616 | continue; /* Ignore disabled channel. */ |
225d3cb0 | 617 | |
be64f90b | 618 | idx = match->channel->index; |
09ffac33 | 619 | trg = match->match; |
be64f90b DE |
620 | |
621 | if (idx < 0 || idx >= devc->model->num_channels) { | |
622 | sr_err("Channel index %d out of range.", idx); | |
d64b5f43 | 623 | return SR_ERR_BUG; /* Should not happen. */ |
be64f90b | 624 | } |
09ffac33 DE |
625 | if (trg != SR_TRIGGER_ZERO |
626 | && trg != SR_TRIGGER_ONE | |
627 | && trg != SR_TRIGGER_RISING | |
628 | && trg != SR_TRIGGER_FALLING) { | |
be64f90b | 629 | sr_err("Unsupported trigger match for CH%d.", idx + 1); |
225d3cb0 DE |
630 | return SR_ERR_ARG; |
631 | } | |
09ffac33 DE |
632 | level_bit = (trg == SR_TRIGGER_ONE |
633 | || trg == SR_TRIGGER_RISING) ? 1 : 0; | |
634 | type_bit = (trg == SR_TRIGGER_RISING | |
635 | || trg == SR_TRIGGER_FALLING) ? 1 : 0; | |
636 | ||
637 | trigger_mask |= UINT64_C(1) << idx; | |
638 | trigger_values |= level_bit << idx; | |
639 | trigger_edge_mask |= type_bit << idx; | |
225d3cb0 DE |
640 | } |
641 | devc->trigger_mask = trigger_mask; | |
642 | devc->trigger_values = trigger_values; | |
643 | devc->trigger_edge_mask = trigger_edge_mask; | |
644 | ||
645 | return SR_OK; | |
646 | } | |
647 | ||
be64f90b DE |
648 | /* Apply current device configuration to the hardware. |
649 | */ | |
ee38c8ba DE |
650 | static int config_commit(const struct sr_dev_inst *sdi) |
651 | { | |
225d3cb0 | 652 | struct dev_context *devc; |
be64f90b DE |
653 | int ret; |
654 | ||
655 | devc = sdi->priv; | |
225d3cb0 DE |
656 | |
657 | if (sdi->status != SR_ST_ACTIVE) | |
658 | return SR_ERR_DEV_CLOSED; | |
659 | ||
225d3cb0 DE |
660 | if (devc->acquisition) { |
661 | sr_err("Acquisition still in progress?"); | |
ee38c8ba DE |
662 | return SR_ERR; |
663 | } | |
664 | ||
be64f90b DE |
665 | ret = prepare_trigger_masks(sdi); |
666 | if (ret != SR_OK) | |
667 | return ret; | |
668 | ||
669 | ret = (*devc->model->apply_fpga_config)(sdi); | |
670 | if (ret != SR_OK) { | |
671 | sr_err("Failed to apply FPGA configuration."); | |
672 | return ret; | |
673 | } | |
674 | ||
675 | return SR_OK; | |
ee38c8ba DE |
676 | } |
677 | ||
be64f90b DE |
678 | /* List available choices for a configuration setting. |
679 | */ | |
680 | static int config_list(uint32_t key, GVariant **data, | |
681 | const struct sr_dev_inst *sdi, | |
53b4680f | 682 | const struct sr_channel_group *cg) |
aeaad0b0 | 683 | { |
be64f90b | 684 | struct dev_context *devc; |
5874e88d DE |
685 | GVariant *gvar; |
686 | GVariantBuilder gvb; | |
aeaad0b0 | 687 | |
53b4680f | 688 | (void)cg; |
aeaad0b0 | 689 | |
be64f90b | 690 | if (key == SR_CONF_SCAN_OPTIONS) { |
584560f1 | 691 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
d64b5f43 | 692 | scanopts, ARRAY_SIZE(scanopts), sizeof(scanopts[0])); |
be64f90b DE |
693 | return SR_OK; |
694 | } | |
695 | if (!sdi) { | |
696 | if (key != SR_CONF_DEVICE_OPTIONS) | |
697 | return SR_ERR_ARG; | |
698 | ||
699 | /* List driver capabilities. */ | |
584560f1 | 700 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
d64b5f43 | 701 | drvopts, ARRAY_SIZE(drvopts), sizeof(drvopts[0])); |
be64f90b DE |
702 | return SR_OK; |
703 | } | |
704 | ||
705 | devc = sdi->priv; | |
706 | ||
707 | /* List the model's device options. */ | |
708 | if (key == SR_CONF_DEVICE_OPTIONS) { | |
709 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
d64b5f43 UH |
710 | devc->model->devopts, devc->model->num_devopts, |
711 | sizeof(devc->model->devopts[0])); | |
be64f90b DE |
712 | return SR_OK; |
713 | } | |
714 | ||
715 | if (!has_devopt(devc->model, key | SR_CONF_LIST)) | |
716 | return SR_ERR_NA; | |
717 | ||
718 | switch (key) { | |
5874e88d | 719 | case SR_CONF_SAMPLERATE: |
be64f90b DE |
720 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_VARDICT); |
721 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
d64b5f43 UH |
722 | devc->model->samplerates, devc->model->num_samplerates, |
723 | sizeof(devc->model->samplerates[0])); | |
5874e88d DE |
724 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); |
725 | *data = g_variant_builder_end(&gvb); | |
726 | break; | |
bbe7e48a BV |
727 | case SR_CONF_TRIGGER_MATCH: |
728 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
d64b5f43 UH |
729 | trigger_matches, ARRAY_SIZE(trigger_matches), |
730 | sizeof(trigger_matches[0])); | |
5874e88d | 731 | break; |
e6e54bd2 DE |
732 | case SR_CONF_TRIGGER_SOURCE: |
733 | *data = g_variant_new_strv(trigger_source_names, | |
d64b5f43 | 734 | ARRAY_SIZE(trigger_source_names)); |
e6e54bd2 DE |
735 | break; |
736 | case SR_CONF_TRIGGER_SLOPE: | |
6358f0a9 DE |
737 | case SR_CONF_CLOCK_EDGE: |
738 | *data = g_variant_new_strv(signal_edge_names, | |
d64b5f43 | 739 | ARRAY_SIZE(signal_edge_names)); |
e6e54bd2 | 740 | break; |
aeaad0b0 | 741 | default: |
be64f90b DE |
742 | /* Must not happen for a key listed in devopts. */ |
743 | return SR_ERR_BUG; | |
aeaad0b0 DE |
744 | } |
745 | ||
5874e88d | 746 | return SR_OK; |
aeaad0b0 DE |
747 | } |
748 | ||
be64f90b DE |
749 | /* Set up the device hardware to begin capturing samples as soon as the |
750 | * configured trigger conditions are met, or immediately if no triggers | |
751 | * are configured. | |
752 | */ | |
695dc859 | 753 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
5874e88d | 754 | { |
aeaad0b0 DE |
755 | if (sdi->status != SR_ST_ACTIVE) |
756 | return SR_ERR_DEV_CLOSED; | |
757 | ||
5874e88d DE |
758 | sr_info("Starting acquisition."); |
759 | ||
be64f90b | 760 | return lwla_start_acquisition(sdi); |
aeaad0b0 DE |
761 | } |
762 | ||
be64f90b DE |
763 | /* Request that a running capture operation be stopped. |
764 | */ | |
695dc859 | 765 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
aeaad0b0 | 766 | { |
c81069b3 DE |
767 | struct dev_context *devc; |
768 | ||
c81069b3 | 769 | devc = sdi->priv; |
aeaad0b0 DE |
770 | |
771 | if (sdi->status != SR_ST_ACTIVE) | |
772 | return SR_ERR_DEV_CLOSED; | |
773 | ||
be64f90b | 774 | if (devc->state != STATE_IDLE && !devc->cancel_requested) { |
c81069b3 DE |
775 | devc->cancel_requested = TRUE; |
776 | sr_dbg("Stopping acquisition."); | |
777 | } | |
d64b5f43 | 778 | |
aeaad0b0 DE |
779 | return SR_OK; |
780 | } | |
781 | ||
be64f90b DE |
782 | /* SysClk LWLA driver descriptor. |
783 | */ | |
aeaad0b0 DE |
784 | SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = { |
785 | .name = "sysclk-lwla", | |
5874e88d | 786 | .longname = "SysClk LWLA series", |
aeaad0b0 DE |
787 | .api_version = 1, |
788 | .init = init, | |
700d6b64 | 789 | .cleanup = std_cleanup, |
aeaad0b0 | 790 | .scan = scan, |
c01bf34c | 791 | .dev_list = std_dev_list, |
aeaad0b0 DE |
792 | .dev_clear = dev_clear, |
793 | .config_get = config_get, | |
794 | .config_set = config_set, | |
f3ca73ed | 795 | .config_channel_set = config_channel_set, |
ee38c8ba | 796 | .config_commit = config_commit, |
aeaad0b0 DE |
797 | .config_list = config_list, |
798 | .dev_open = dev_open, | |
799 | .dev_close = dev_close, | |
800 | .dev_acquisition_start = dev_acquisition_start, | |
801 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 802 | .context = NULL, |
aeaad0b0 | 803 | }; |