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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "protocol.h" | |
23 | ||
24 | #define USB_VENDOR_ID 0x0403 | |
25 | #define USB_DEVICE_ID 0x6014 | |
26 | #define USB_VENDOR_NAME "IKALOGIC" | |
27 | #define USB_MODEL_NAME "ScanaPLUS" | |
28 | #define USB_IPRODUCT "SCANAPLUS" | |
29 | ||
30 | #define SAMPLE_BUF_SIZE (8 * 1024 * 1024) | |
31 | ||
32 | static const uint32_t devopts[] = { | |
33 | SR_CONF_LOGIC_ANALYZER, | |
34 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
35 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
36 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
37 | }; | |
38 | ||
39 | /* Channels are numbered 1-9. */ | |
40 | static const char *channel_names[] = { | |
41 | "1", "2", "3", "4", "5", "6", "7", "8", "9", | |
42 | }; | |
43 | ||
44 | /* Note: The IKALOGIC ScanaPLUS always samples at 100MHz. */ | |
45 | static const uint64_t samplerates[1] = { SR_MHZ(100) }; | |
46 | ||
47 | SR_PRIV struct sr_dev_driver ikalogic_scanaplus_driver_info; | |
48 | ||
49 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); | |
50 | ||
51 | static void clear_helper(void *priv) | |
52 | { | |
53 | struct dev_context *devc; | |
54 | ||
55 | devc = priv; | |
56 | ||
57 | ftdi_free(devc->ftdic); | |
58 | g_free(devc->compressed_buf); | |
59 | g_free(devc->sample_buf); | |
60 | g_free(devc); | |
61 | } | |
62 | ||
63 | static int dev_clear(const struct sr_dev_driver *di) | |
64 | { | |
65 | return std_dev_clear(di, clear_helper); | |
66 | } | |
67 | ||
68 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
69 | { | |
70 | return std_init(sr_ctx, di, LOG_PREFIX); | |
71 | } | |
72 | ||
73 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
74 | { | |
75 | struct sr_dev_inst *sdi; | |
76 | struct drv_context *drvc; | |
77 | struct dev_context *devc; | |
78 | GSList *devices; | |
79 | unsigned int i; | |
80 | int ret; | |
81 | ||
82 | (void)options; | |
83 | ||
84 | drvc = di->context; | |
85 | ||
86 | devices = NULL; | |
87 | ||
88 | /* Allocate memory for our private device context. */ | |
89 | devc = g_malloc0(sizeof(struct dev_context)); | |
90 | ||
91 | /* Allocate memory for the incoming compressed samples. */ | |
92 | if (!(devc->compressed_buf = g_try_malloc0(COMPRESSED_BUF_SIZE))) { | |
93 | sr_err("compressed_buf malloc failed."); | |
94 | goto err_free_devc; | |
95 | } | |
96 | ||
97 | /* Allocate memory for the uncompressed samples. */ | |
98 | if (!(devc->sample_buf = g_try_malloc0(SAMPLE_BUF_SIZE))) { | |
99 | sr_err("sample_buf malloc failed."); | |
100 | goto err_free_compressed_buf; | |
101 | } | |
102 | ||
103 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
104 | if (!(devc->ftdic = ftdi_new())) { | |
105 | sr_err("Failed to initialize libftdi."); | |
106 | goto err_free_sample_buf; | |
107 | } | |
108 | ||
109 | /* Check for the device and temporarily open it. */ | |
110 | ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, USB_DEVICE_ID, | |
111 | USB_IPRODUCT, NULL); | |
112 | if (ret < 0) { | |
113 | /* Log errors, except for -3 ("device not found"). */ | |
114 | if (ret != -3) | |
115 | sr_err("Failed to open device (%d): %s", ret, | |
116 | ftdi_get_error_string(devc->ftdic)); | |
117 | goto err_free_ftdic; | |
118 | } | |
119 | ||
120 | /* Register the device with libsigrok. */ | |
121 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
122 | sdi->status = SR_ST_INITIALIZING; | |
123 | sdi->vendor = g_strdup(USB_VENDOR_NAME); | |
124 | sdi->model = g_strdup(USB_MODEL_NAME); | |
125 | sdi->driver = di; | |
126 | sdi->priv = devc; | |
127 | ||
128 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) | |
129 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_names[i]); | |
130 | ||
131 | devices = g_slist_append(devices, sdi); | |
132 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
133 | ||
134 | /* Close device. We'll reopen it again when we need it. */ | |
135 | scanaplus_close(devc); | |
136 | ||
137 | return devices; | |
138 | ||
139 | scanaplus_close(devc); | |
140 | err_free_ftdic: | |
141 | ftdi_free(devc->ftdic); /* NOT free() or g_free()! */ | |
142 | err_free_sample_buf: | |
143 | g_free(devc->sample_buf); | |
144 | err_free_compressed_buf: | |
145 | g_free(devc->compressed_buf); | |
146 | err_free_devc: | |
147 | g_free(devc); | |
148 | ||
149 | return NULL; | |
150 | } | |
151 | ||
152 | static int dev_open(struct sr_dev_inst *sdi) | |
153 | { | |
154 | struct dev_context *devc; | |
155 | int ret; | |
156 | ||
157 | devc = sdi->priv; | |
158 | ||
159 | /* Select interface A, otherwise communication will fail. */ | |
160 | ret = ftdi_set_interface(devc->ftdic, INTERFACE_A); | |
161 | if (ret < 0) { | |
162 | sr_err("Failed to set FTDI interface A (%d): %s", ret, | |
163 | ftdi_get_error_string(devc->ftdic)); | |
164 | return SR_ERR; | |
165 | } | |
166 | sr_dbg("FTDI chip interface A set successfully."); | |
167 | ||
168 | /* Open the device. */ | |
169 | ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, USB_DEVICE_ID, | |
170 | USB_IPRODUCT, NULL); | |
171 | if (ret < 0) { | |
172 | sr_err("Failed to open device (%d): %s", ret, | |
173 | ftdi_get_error_string(devc->ftdic)); | |
174 | return SR_ERR; | |
175 | } | |
176 | sr_dbg("FTDI device opened successfully."); | |
177 | ||
178 | /* Purge RX/TX buffers in the FTDI chip. */ | |
179 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { | |
180 | sr_err("Failed to purge FTDI RX/TX buffers (%d): %s.", | |
181 | ret, ftdi_get_error_string(devc->ftdic)); | |
182 | goto err_dev_open_close_ftdic; | |
183 | } | |
184 | sr_dbg("FTDI chip buffers purged successfully."); | |
185 | ||
186 | /* Reset the FTDI bitmode. */ | |
187 | ret = ftdi_set_bitmode(devc->ftdic, 0xff, BITMODE_RESET); | |
188 | if (ret < 0) { | |
189 | sr_err("Failed to reset the FTDI chip bitmode (%d): %s.", | |
190 | ret, ftdi_get_error_string(devc->ftdic)); | |
191 | goto err_dev_open_close_ftdic; | |
192 | } | |
193 | sr_dbg("FTDI chip bitmode reset successfully."); | |
194 | ||
195 | /* Set FTDI bitmode to "sync FIFO". */ | |
196 | ret = ftdi_set_bitmode(devc->ftdic, 0xff, BITMODE_SYNCFF); | |
197 | if (ret < 0) { | |
198 | sr_err("Failed to put FTDI chip into sync FIFO mode (%d): %s.", | |
199 | ret, ftdi_get_error_string(devc->ftdic)); | |
200 | goto err_dev_open_close_ftdic; | |
201 | } | |
202 | sr_dbg("FTDI chip sync FIFO mode entered successfully."); | |
203 | ||
204 | /* Set the FTDI latency timer to 2. */ | |
205 | ret = ftdi_set_latency_timer(devc->ftdic, 2); | |
206 | if (ret < 0) { | |
207 | sr_err("Failed to set FTDI latency timer (%d): %s.", | |
208 | ret, ftdi_get_error_string(devc->ftdic)); | |
209 | goto err_dev_open_close_ftdic; | |
210 | } | |
211 | sr_dbg("FTDI chip latency timer set successfully."); | |
212 | ||
213 | /* Set the FTDI read data chunk size to 64kB. */ | |
214 | ret = ftdi_read_data_set_chunksize(devc->ftdic, 64 * 1024); | |
215 | if (ret < 0) { | |
216 | sr_err("Failed to set FTDI read data chunk size (%d): %s.", | |
217 | ret, ftdi_get_error_string(devc->ftdic)); | |
218 | goto err_dev_open_close_ftdic; | |
219 | } | |
220 | sr_dbg("FTDI chip read data chunk size set successfully."); | |
221 | ||
222 | /* Get the ScanaPLUS device ID from the FTDI EEPROM. */ | |
223 | if ((ret = scanaplus_get_device_id(devc)) < 0) { | |
224 | sr_err("Failed to get ScanaPLUS device ID: %d.", ret); | |
225 | goto err_dev_open_close_ftdic; | |
226 | } | |
227 | sr_dbg("Received ScanaPLUS device ID successfully: %02x %02x %02x.", | |
228 | devc->devid[0], devc->devid[1], devc->devid[2]); | |
229 | ||
230 | sdi->status = SR_ST_ACTIVE; | |
231 | ||
232 | return SR_OK; | |
233 | ||
234 | err_dev_open_close_ftdic: | |
235 | scanaplus_close(devc); | |
236 | return SR_ERR; | |
237 | } | |
238 | ||
239 | static int dev_close(struct sr_dev_inst *sdi) | |
240 | { | |
241 | int ret; | |
242 | struct dev_context *devc; | |
243 | ||
244 | ret = SR_OK; | |
245 | devc = sdi->priv; | |
246 | ||
247 | if (sdi->status == SR_ST_ACTIVE) { | |
248 | sr_dbg("Status ACTIVE, closing device."); | |
249 | ret = scanaplus_close(devc); | |
250 | } else { | |
251 | sr_spew("Status not ACTIVE, nothing to do."); | |
252 | } | |
253 | ||
254 | sdi->status = SR_ST_INACTIVE; | |
255 | ||
256 | return ret; | |
257 | } | |
258 | ||
259 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
260 | const struct sr_channel_group *cg) | |
261 | { | |
262 | (void)sdi; | |
263 | (void)cg; | |
264 | ||
265 | switch (key) { | |
266 | case SR_CONF_SAMPLERATE: | |
267 | /* The ScanaPLUS samplerate is 100MHz and can't be changed. */ | |
268 | *data = g_variant_new_uint64(SR_MHZ(100)); | |
269 | break; | |
270 | default: | |
271 | return SR_ERR_NA; | |
272 | } | |
273 | ||
274 | return SR_OK; | |
275 | } | |
276 | ||
277 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
278 | const struct sr_channel_group *cg) | |
279 | { | |
280 | struct dev_context *devc; | |
281 | ||
282 | (void)cg; | |
283 | ||
284 | if (sdi->status != SR_ST_ACTIVE) | |
285 | return SR_ERR_DEV_CLOSED; | |
286 | ||
287 | devc = sdi->priv; | |
288 | ||
289 | switch (key) { | |
290 | case SR_CONF_SAMPLERATE: | |
291 | if (g_variant_get_uint64(data) != SR_MHZ(100)) { | |
292 | sr_err("ScanaPLUS only supports samplerate = 100MHz."); | |
293 | return SR_ERR_ARG; | |
294 | } | |
295 | /* Nothing to do, the ScanaPLUS samplerate is always 100MHz. */ | |
296 | break; | |
297 | case SR_CONF_LIMIT_MSEC: | |
298 | if (g_variant_get_uint64(data) == 0) | |
299 | return SR_ERR_ARG; | |
300 | devc->limit_msec = g_variant_get_uint64(data); | |
301 | break; | |
302 | case SR_CONF_LIMIT_SAMPLES: | |
303 | if (g_variant_get_uint64(data) == 0) | |
304 | return SR_ERR_ARG; | |
305 | devc->limit_samples = g_variant_get_uint64(data); | |
306 | break; | |
307 | default: | |
308 | return SR_ERR_NA; | |
309 | } | |
310 | ||
311 | return SR_OK; | |
312 | } | |
313 | ||
314 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
315 | const struct sr_channel_group *cg) | |
316 | { | |
317 | GVariant *gvar; | |
318 | GVariantBuilder gvb; | |
319 | ||
320 | (void)sdi; | |
321 | (void)cg; | |
322 | ||
323 | switch (key) { | |
324 | case SR_CONF_DEVICE_OPTIONS: | |
325 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
326 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
327 | break; | |
328 | case SR_CONF_SAMPLERATE: | |
329 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
330 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
331 | samplerates, ARRAY_SIZE(samplerates), | |
332 | sizeof(uint64_t)); | |
333 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
334 | *data = g_variant_builder_end(&gvb); | |
335 | break; | |
336 | default: | |
337 | return SR_ERR_NA; | |
338 | } | |
339 | ||
340 | return SR_OK; | |
341 | } | |
342 | ||
343 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
344 | { | |
345 | int ret; | |
346 | struct dev_context *devc; | |
347 | ||
348 | if (sdi->status != SR_ST_ACTIVE) | |
349 | return SR_ERR_DEV_CLOSED; | |
350 | ||
351 | devc = sdi->priv; | |
352 | ||
353 | if (!devc->ftdic) | |
354 | return SR_ERR_BUG; | |
355 | ||
356 | /* TODO: Configure channels later (thresholds etc.). */ | |
357 | ||
358 | /* Properly reset internal variables before every new acquisition. */ | |
359 | devc->compressed_bytes_ignored = 0; | |
360 | devc->samples_sent = 0; | |
361 | devc->bytes_received = 0; | |
362 | ||
363 | if ((ret = scanaplus_init(devc)) < 0) | |
364 | return ret; | |
365 | ||
366 | if ((ret = scanaplus_start_acquisition(devc)) < 0) | |
367 | return ret; | |
368 | ||
369 | std_session_send_df_header(sdi, LOG_PREFIX); | |
370 | ||
371 | /* Hook up a dummy handler to receive data from the device. */ | |
372 | sr_session_source_add(sdi->session, -1, 0, 0, scanaplus_receive_data, (void *)sdi); | |
373 | ||
374 | return SR_OK; | |
375 | } | |
376 | ||
377 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
378 | { | |
379 | sr_dbg("Stopping acquisition."); | |
380 | sr_session_source_remove(sdi->session, -1); | |
381 | std_session_send_df_end(sdi, LOG_PREFIX); | |
382 | ||
383 | return SR_OK; | |
384 | } | |
385 | ||
386 | SR_PRIV struct sr_dev_driver ikalogic_scanaplus_driver_info = { | |
387 | .name = "ikalogic-scanaplus", | |
388 | .longname = "IKALOGIC ScanaPLUS", | |
389 | .api_version = 1, | |
390 | .init = init, | |
391 | .cleanup = std_cleanup, | |
392 | .scan = scan, | |
393 | .dev_list = std_dev_list, | |
394 | .dev_clear = dev_clear, | |
395 | .config_get = config_get, | |
396 | .config_set = config_set, | |
397 | .config_list = config_list, | |
398 | .dev_open = dev_open, | |
399 | .dev_close = dev_close, | |
400 | .dev_acquisition_start = dev_acquisition_start, | |
401 | .dev_acquisition_stop = dev_acquisition_stop, | |
402 | .context = NULL, | |
403 | }; |