[libsigrok.git] / src / hardware / beaglelogic / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014-17 Kumar Abhishek <abhishek@theembeddedkitchen.net>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include "protocol.h"
#include "beaglelogic.h"

static const uint32_t scanopts[] = {
	SR_CONF_CONN,
	SR_CONF_NUM_LOGIC_CHANNELS,
};

static const uint32_t drvopts[] = {
	SR_CONF_LOGIC_ANALYZER,
};

static const uint32_t devopts[] = {
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
	SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_NUM_LOGIC_CHANNELS | SR_CONF_GET,
};

static const int32_t trigger_matches[] = {
	SR_TRIGGER_ZERO,
	SR_TRIGGER_ONE,
	SR_TRIGGER_RISING,
	SR_TRIGGER_FALLING,
	SR_TRIGGER_EDGE,
};

SR_PRIV const char *channel_names[] = {
	"P8_45", "P8_46", "P8_43", "P8_44", "P8_41", "P8_42", "P8_39",
	"P8_40", "P8_27", "P8_29", "P8_28", "P8_30", "P8_21", "P8_20",
};

/* Possible sample rates : 10 Hz to 100 MHz = (100 / x) MHz */
static const uint64_t samplerates[] = {
	SR_HZ(10),
	SR_MHZ(100),
	SR_HZ(1),
};

static struct dev_context *beaglelogic_devc_alloc(void)
{
	struct dev_context *devc;

	devc = g_malloc0(sizeof(struct dev_context));

	/* Default non-zero values (if any) */
	devc->fd = -1;
	devc->limit_samples = (uint64_t)10000000;
	devc->tcp_buffer = 0;

	return devc;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	GSList *l;
	struct sr_config *src;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	const char *conn = NULL;
	gchar **params;
	int i, maxch;

	maxch = NUM_CHANNELS;
	for (l = options; l; l = l->next) {
		src = l->data;
		if (src->key == SR_CONF_NUM_LOGIC_CHANNELS)
			maxch = g_variant_get_int32(src->data);
		if (src->key == SR_CONF_CONN)
			conn = g_variant_get_string(src->data, NULL);
	}

	/* Probe for /dev/beaglelogic if not connecting via TCP */
	if (!conn) {
		if (!g_file_test(BEAGLELOGIC_DEV_NODE, G_FILE_TEST_EXISTS))
			return NULL;
	} else {
		params = g_strsplit(conn, "/", 0);
		if (!params || !params[1] || !params[2]) {
			sr_err("Invalid Parameters.");
			g_strfreev(params);
			return NULL;
		}
		if (g_ascii_strncasecmp(params[0], "tcp", 3)) {
			sr_err("Only TCP (tcp-raw) protocol is currently supported.");
			g_strfreev(params);
			return NULL;
		}
	}

	maxch = (maxch > 8) ? NUM_CHANNELS : 8;

	sdi = g_new0(struct sr_dev_inst, 1);
	sdi->status = SR_ST_INACTIVE;
	sdi->model = g_strdup("BeagleLogic");
	sdi->version = g_strdup("1.0");

	devc = beaglelogic_devc_alloc();

	if (!conn) {
		devc->beaglelogic = &beaglelogic_native_ops;
		sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);
	} else {
		devc->read_timeout = 1000 * 1000;
		devc->beaglelogic = &beaglelogic_tcp_ops;
		devc->address = g_strdup(params[1]);
		devc->port = g_strdup(params[2]);
		g_strfreev(params);

		if (devc->beaglelogic->open(devc) != SR_OK)
			goto err_free;
		if (beaglelogic_tcp_detect(devc) != SR_OK)
			goto err_free;
		if (devc->beaglelogic->close(devc) != SR_OK)
			goto err_free;
		sr_info("BeagleLogic device found at %s : %s",
			devc->address, devc->port);
	}

	/* Fill the channels */
	for (i = 0; i < maxch; i++)
		sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
				channel_names[i]);

	sdi->priv = devc;

	return std_scan_complete(di, g_slist_append(NULL, sdi));

err_free:
	g_free(sdi->model);
	g_free(sdi->version);
	g_free(devc->address);
	g_free(devc->port);
	g_free(devc);
	g_free(sdi);

	return NULL;
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;

	/* Open BeagleLogic */
	if (devc->beaglelogic->open(devc))
		return SR_ERR;

	/* Set fd and local attributes */
	if (devc->beaglelogic == &beaglelogic_tcp_ops)
		devc->pollfd.fd = devc->socket;
	else
		devc->pollfd.fd = devc->fd;
	devc->pollfd.events = G_IO_IN;
	devc->pollfd.revents = 0;

	/* Get the default attributes */
	devc->beaglelogic->get_samplerate(devc);
	devc->beaglelogic->get_sampleunit(devc);
	devc->beaglelogic->get_buffersize(devc);
	devc->beaglelogic->get_bufunitsize(devc);

	/* Set the triggerflags to default for continuous capture unless we
	 * explicitly limit samples using SR_CONF_LIMIT_SAMPLES */
	devc->triggerflags = BL_TRIGGERFLAGS_CONTINUOUS;
	devc->beaglelogic->set_triggerflags(devc);

	/* Map the kernel capture FIFO for reads, saves 1 level of memcpy */
	if (devc->beaglelogic == &beaglelogic_native_ops) {
		if (devc->beaglelogic->mmap(devc) != SR_OK) {
			sr_err("Unable to map capture buffer");
			devc->beaglelogic->close(devc);
			return SR_ERR;
		}
	} else {
		devc->tcp_buffer = g_malloc(TCP_BUFFER_SIZE);
	}

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;

	/* Close the memory mapping and the file */
	if (devc->beaglelogic == &beaglelogic_native_ops)
		devc->beaglelogic->munmap(devc);
	devc->beaglelogic->close(devc);

	return SR_OK;
}

static void clear_helper(struct dev_context *devc)
{
	g_free(devc->tcp_buffer);
	g_free(devc->address);
	g_free(devc->port);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
}

static int config_get(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc = sdi->priv;

	(void)cg;

	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->cur_samplerate);
		break;
	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		break;
	case SR_CONF_NUM_LOGIC_CHANNELS:
		*data = g_variant_new_uint32(g_slist_length(sdi->channels));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(uint32_t key, GVariant *data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc = sdi->priv;
	uint64_t tmp_u64;

	(void)cg;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		devc->cur_samplerate = g_variant_get_uint64(data);
		return devc->beaglelogic->set_samplerate(devc);
	case SR_CONF_LIMIT_SAMPLES:
		tmp_u64 = g_variant_get_uint64(data);
		devc->limit_samples = tmp_u64;
		devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;

		/* Check if we have sufficient buffer size */
		tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
		if (tmp_u64 > devc->buffersize) {
			sr_warn("Insufficient buffer space has been allocated.");
			sr_warn("Please use \'echo <size in bytes> > "\
				BEAGLELOGIC_SYSFS_ATTR(memalloc) \
				"\' to increase the buffer size, this"\
				" capture is now truncated to %d Msamples",
				devc->buffersize /
				(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
		}
		return devc->beaglelogic->set_triggerflags(devc);
	case SR_CONF_CAPTURE_RATIO:
		devc->capture_ratio = g_variant_get_uint64(data);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
	case SR_CONF_SAMPLERATE:
		*data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates));
		break;
	case SR_CONF_TRIGGER_MATCH:
		*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

/* get a sane timeout for poll() */
#define BUFUNIT_TIMEOUT_MS(devc)	(100 + ((devc->bufunitsize * 1000) / \
				(uint32_t)(devc->cur_samplerate)))

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	GSList *l;
	struct sr_trigger *trigger;
	struct sr_channel *channel;

	/* Clear capture state */
	devc->bytes_read = 0;
	devc->offset = 0;

	/* Configure channels */
	devc->sampleunit = BL_SAMPLEUNIT_8_BITS;

	for (l = sdi->channels; l; l = l->next) {
		channel = l->data;
		if (channel->index >= 8 && channel->enabled)
			devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	}
	devc->beaglelogic->set_sampleunit(devc);

	/* If continuous sampling, set the limit_samples to max possible value */
	if (devc->triggerflags == BL_TRIGGERFLAGS_CONTINUOUS)
		devc->limit_samples = (uint64_t)-1;

	/* Configure triggers & send header packet */
	if ((trigger = sr_session_trigger_get(sdi->session))) {
		int pre_trigger_samples = 0;
		if (devc->limit_samples > 0)
			pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100;
		devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
		if (!devc->stl)
			return SR_ERR_MALLOC;
		devc->trigger_fired = FALSE;
	} else
		devc->trigger_fired = TRUE;
	std_session_send_df_header(sdi);

	/* Trigger and add poll on file */
	devc->beaglelogic->start(devc);
	if (devc->beaglelogic == &beaglelogic_native_ops)
		sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
			BUFUNIT_TIMEOUT_MS(devc), beaglelogic_native_receive_data,
			(void *)sdi);
	else
		sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
			BUFUNIT_TIMEOUT_MS(devc), beaglelogic_tcp_receive_data,
			(void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;

	/* Execute a stop on BeagleLogic */
	devc->beaglelogic->stop(devc);

	/* Flush the cache */
	if (devc->beaglelogic == &beaglelogic_native_ops)
		lseek(devc->fd, 0, SEEK_SET);
	else
		beaglelogic_tcp_drain(devc);

	/* Remove session source and send EOT packet */
	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
	std_session_send_df_end(sdi);

	return SR_OK;
}

static struct sr_dev_driver beaglelogic_driver_info = {
	.name = "beaglelogic",
	.longname = "BeagleLogic",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(beaglelogic_driver_info);
Commit	Line	Data
bb993797 KA	1	/*
	2	* This file is part of the libsigrok project.
	3	*
3124d3bc	4	* Copyright (C) 2014-17 Kumar Abhishek <abhishek@theembeddedkitchen.net>
bb993797 KA	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>
bb993797	21	#include "protocol.h"
ad9dbc1c	22	#include "beaglelogic.h"
bb993797	23
138589b0	24	static const uint32_t scanopts[] = {
9b2b3ef9	25	SR_CONF_CONN,
138589b0 BV	26	SR_CONF_NUM_LOGIC_CHANNELS,
	27	};
	28
05199c0a UH	29	static const uint32_t drvopts[] = {
	30	SR_CONF_LOGIC_ANALYZER,
	31	};
	32
f254bc4b	33	static const uint32_t devopts[] = {
ad9dbc1c	34	SR_CONF_CONTINUOUS,
5827f61b	35	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
f955ffe8	36	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
5827f61b	37	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
e743a47d	38	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
5827f61b	39	SR_CONF_NUM_LOGIC_CHANNELS \| SR_CONF_GET,
ad9dbc1c KA	40	};
ad9dbc1c KA	41
76d10d13	42	static const int32_t trigger_matches[] = {
ad9dbc1c KA	43	SR_TRIGGER_ZERO,
	44	SR_TRIGGER_ONE,
	45	SR_TRIGGER_RISING,
	46	SR_TRIGGER_FALLING,
	47	SR_TRIGGER_EDGE,
	48	};
	49
0f34cb47 UH	50	SR_PRIV const char *channel_names[] = {
	51	"P8_45", "P8_46", "P8_43", "P8_44", "P8_41", "P8_42", "P8_39",
	52	"P8_40", "P8_27", "P8_29", "P8_28", "P8_30", "P8_21", "P8_20",
ad9dbc1c KA	53	};
	54
	55	/* Possible sample rates : 10 Hz to 100 MHz = (100 / x) MHz */
	56	static const uint64_t samplerates[] = {
138589b0 BV	57	SR_HZ(10),
	58	SR_MHZ(100),
	59	SR_HZ(1),
ad9dbc1c KA	60	};
ad9dbc1c KA	61
f57d8ffe	62	static struct dev_context *beaglelogic_devc_alloc(void)
ad9dbc1c KA	63	{
	64	struct dev_context *devc;
	65
f57d8ffe	66	devc = g_malloc0(sizeof(struct dev_context));
ad9dbc1c KA	67
	68	/* Default non-zero values (if any) */
	69	devc->fd = -1;
f955ffe8	70	devc->limit_samples = (uint64_t)10000000;
9b2b3ef9	71	devc->tcp_buffer = 0;
ad9dbc1c KA	72
	73	return devc;
	74	}
	75
4f840ce9	76	static GSList scan(struct sr_dev_driver di, GSList *options)
bb993797	77	{
43376f33	78	GSList *l;
ad9dbc1c KA	79	struct sr_config *src;
	80	struct sr_dev_inst *sdi;
	81	struct dev_context *devc;
9b2b3ef9 KA	82	const char *conn = NULL;
9b2b3ef9 KA	83	gchar **params;
ad9dbc1c	84	int i, maxch;
bb993797	85
6eab3021	86	maxch = NUM_CHANNELS;
ad9dbc1c KA	87	for (l = options; l; l = l->next) {
	88	src = l->data;
	89	if (src->key == SR_CONF_NUM_LOGIC_CHANNELS)
	90	maxch = g_variant_get_int32(src->data);
9b2b3ef9 KA	91	if (src->key == SR_CONF_CONN)
	92	conn = g_variant_get_string(src->data, NULL);
	93	}
	94
	95	/* Probe for /dev/beaglelogic if not connecting via TCP */
f82525e6	96	if (!conn) {
9b2b3ef9 KA	97	if (!g_file_test(BEAGLELOGIC_DEV_NODE, G_FILE_TEST_EXISTS))
	98	return NULL;
	99	} else {
	100	params = g_strsplit(conn, "/", 0);
	101	if (!params \|\| !params[1] \|\| !params[2]) {
	102	sr_err("Invalid Parameters.");
	103	g_strfreev(params);
	104	return NULL;
	105	}
	106	if (g_ascii_strncasecmp(params[0], "tcp", 3)) {
	107	sr_err("Only TCP (tcp-raw) protocol is currently supported.");
	108	g_strfreev(params);
	109	return NULL;
	110	}
ad9dbc1c KA	111	}
ad9dbc1c KA	112
f82525e6	113	maxch = (maxch > 8) ? NUM_CHANNELS : 8;
ad9dbc1c	114
6eab3021 KA	115	sdi = g_new0(struct sr_dev_inst, 1);
	116	sdi->status = SR_ST_INACTIVE;
	117	sdi->model = g_strdup("BeagleLogic");
	118	sdi->version = g_strdup("1.0");
ad9dbc1c	119
6eab3021	120	devc = beaglelogic_devc_alloc();
ad9dbc1c	121
f82525e6	122	if (!conn) {
9b2b3ef9 KA	123	devc->beaglelogic = &beaglelogic_native_ops;
	124	sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);
	125	} else {
	126	devc->read_timeout = 1000 * 1000;
	127	devc->beaglelogic = &beaglelogic_tcp_ops;
	128	devc->address = g_strdup(params[1]);
	129	devc->port = g_strdup(params[2]);
	130	g_strfreev(params);
	131
	132	if (devc->beaglelogic->open(devc) != SR_OK)
	133	goto err_free;
	134	if (beaglelogic_tcp_detect(devc) != SR_OK)
	135	goto err_free;
a486fca9 KA	136	if (devc->beaglelogic->close(devc) != SR_OK)
a486fca9 KA	137	goto err_free;
9b2b3ef9 KA	138	sr_info("BeagleLogic device found at %s : %s",
	139	devc->address, devc->port);
	140	}
f82525e6	141
0bca2e75	142	/* Fill the channels */
5e23fcab ML	143	for (i = 0; i < maxch; i++)
5e23fcab ML	144	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
0f34cb47	145	channel_names[i]);
ad9dbc1c KA	146
ad9dbc1c KA	147	sdi->priv = devc;
bb993797	148
43376f33	149	return std_scan_complete(di, g_slist_append(NULL, sdi));
f82525e6	150
9b2b3ef9 KA	151	err_free:
	152	g_free(sdi->model);
	153	g_free(sdi->version);
d6f20d03 KA	154	g_free(devc->address);
d6f20d03 KA	155	g_free(devc->port);
9b2b3ef9 KA	156	g_free(devc);
	157	g_free(sdi);
	158
	159	return NULL;
bb993797 KA	160	}
bb993797 KA	161
bb993797 KA	162	static int dev_open(struct sr_dev_inst *sdi)
bb993797 KA	163	{
ad9dbc1c KA	164	struct dev_context *devc = sdi->priv;
	165
	166	/* Open BeagleLogic */
a486fca9 KA	167	if (devc->beaglelogic->open(devc))
a486fca9 KA	168	return SR_ERR;
ad9dbc1c KA	169
ad9dbc1c KA	170	/* Set fd and local attributes */
9b2b3ef9 KA	171	if (devc->beaglelogic == &beaglelogic_tcp_ops)
	172	devc->pollfd.fd = devc->socket;
	173	else
	174	devc->pollfd.fd = devc->fd;
ad9dbc1c	175	devc->pollfd.events = G_IO_IN;
89efe064	176	devc->pollfd.revents = 0;
ad9dbc1c KA	177
ad9dbc1c KA	178	/* Get the default attributes */
0bca2e75 KA	179	devc->beaglelogic->get_samplerate(devc);
	180	devc->beaglelogic->get_sampleunit(devc);
	181	devc->beaglelogic->get_buffersize(devc);
	182	devc->beaglelogic->get_bufunitsize(devc);
ad9dbc1c	183
713f3f84 KA	184	/* Set the triggerflags to default for continuous capture unless we
	185	* explicitly limit samples using SR_CONF_LIMIT_SAMPLES */
	186	devc->triggerflags = BL_TRIGGERFLAGS_CONTINUOUS;
0bca2e75	187	devc->beaglelogic->set_triggerflags(devc);
713f3f84	188
ad9dbc1c	189	/* Map the kernel capture FIFO for reads, saves 1 level of memcpy */
9b2b3ef9 KA	190	if (devc->beaglelogic == &beaglelogic_native_ops) {
	191	if (devc->beaglelogic->mmap(devc) != SR_OK) {
	192	sr_err("Unable to map capture buffer");
	193	devc->beaglelogic->close(devc);
	194	return SR_ERR;
	195	}
	196	} else {
	197	devc->tcp_buffer = g_malloc(TCP_BUFFER_SIZE);
ad9dbc1c	198	}
bb993797	199
bb993797 KA	200	return SR_OK;
	201	}
	202
	203	static int dev_close(struct sr_dev_inst *sdi)
	204	{
ad9dbc1c	205	struct dev_context *devc = sdi->priv;
bb993797	206
093e1cba	207	/* Close the memory mapping and the file */
9b2b3ef9 KA	208	if (devc->beaglelogic == &beaglelogic_native_ops)
9b2b3ef9 KA	209	devc->beaglelogic->munmap(devc);
0bca2e75	210	devc->beaglelogic->close(devc);
093e1cba	211
d6f20d03 KA	212	return SR_OK;
	213	}
	214
	215	static void clear_helper(struct dev_context *devc)
	216	{
00f2e9bc UH	217	g_free(devc->tcp_buffer);
	218	g_free(devc->address);
	219	g_free(devc->port);
d6f20d03 KA	220	}
	221
	222	static int dev_clear(const struct sr_dev_driver *di)
	223	{
	224	return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
bb993797 KA	225	}
bb993797 KA	226
dd7a72ea UH	227	static int config_get(uint32_t key, GVariant **data,
dd7a72ea UH	228	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
bb993797	229	{
ad9dbc1c	230	struct dev_context *devc = sdi->priv;
dcd438ee	231
bb993797 KA	232	(void)cg;
bb993797 KA	233
bb993797	234	switch (key) {
ad9dbc1c KA	235	case SR_CONF_LIMIT_SAMPLES:
	236	*data = g_variant_new_uint64(devc->limit_samples);
	237	break;
ad9dbc1c KA	238	case SR_CONF_SAMPLERATE:
	239	*data = g_variant_new_uint64(devc->cur_samplerate);
	240	break;
e743a47d AJ	241	case SR_CONF_CAPTURE_RATIO:
	242	*data = g_variant_new_uint64(devc->capture_ratio);
	243	break;
ad9dbc1c KA	244	case SR_CONF_NUM_LOGIC_CHANNELS:
	245	*data = g_variant_new_uint32(g_slist_length(sdi->channels));
	246	break;
bb993797 KA	247	default:
	248	return SR_ERR_NA;
	249	}
	250
ad9dbc1c	251	return SR_OK;
bb993797 KA	252	}
bb993797 KA	253
dd7a72ea UH	254	static int config_set(uint32_t key, GVariant *data,
dd7a72ea UH	255	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
bb993797	256	{
ad9dbc1c KA	257	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	258	uint64_t tmp_u64;
dcd438ee	259
bb993797 KA	260	(void)cg;
bb993797 KA	261
bb993797	262	switch (key) {
ad9dbc1c KA	263	case SR_CONF_SAMPLERATE:
ad9dbc1c KA	264	devc->cur_samplerate = g_variant_get_uint64(data);
0bca2e75	265	return devc->beaglelogic->set_samplerate(devc);
ad9dbc1c KA	266	case SR_CONF_LIMIT_SAMPLES:
	267	tmp_u64 = g_variant_get_uint64(data);
	268	devc->limit_samples = tmp_u64;
	269	devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;
	270
	271	/* Check if we have sufficient buffer size */
	272	tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
	273	if (tmp_u64 > devc->buffersize) {
	274	sr_warn("Insufficient buffer space has been allocated.");
	275	sr_warn("Please use \'echo <size in bytes> > "\
	276	BEAGLELOGIC_SYSFS_ATTR(memalloc) \
55f26c42	277	"\' to increase the buffer size, this"\
ad9dbc1c KA	278	" capture is now truncated to %d Msamples",
	279	devc->buffersize /
	280	(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
	281	}
0bca2e75	282	return devc->beaglelogic->set_triggerflags(devc);
e743a47d AJ	283	case SR_CONF_CAPTURE_RATIO:
e743a47d AJ	284	devc->capture_ratio = g_variant_get_uint64(data);
efad7ccc	285	break;
bb993797	286	default:
ad9dbc1c	287	return SR_ERR_NA;
bb993797 KA	288	}
bb993797 KA	289
ad9dbc1c	290	return SR_OK;
bb993797 KA	291	}
bb993797 KA	292
dd7a72ea UH	293	static int config_list(uint32_t key, GVariant **data,
dd7a72ea UH	294	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
bb993797	295	{
bb993797	296	switch (key) {
138589b0	297	case SR_CONF_SCAN_OPTIONS:
ad9dbc1c	298	case SR_CONF_DEVICE_OPTIONS:
05199c0a	299	return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
ad9dbc1c	300	case SR_CONF_SAMPLERATE:
53012da6	301	*data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates));
ad9dbc1c KA	302	break;
ad9dbc1c KA	303	case SR_CONF_TRIGGER_MATCH:
76d10d13	304	*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
ad9dbc1c	305	break;
bb993797 KA	306	default:
	307	return SR_ERR_NA;
	308	}
	309
a9010323	310	return SR_OK;
bb993797 KA	311	}
bb993797 KA	312
ad9dbc1c KA	313	/* get a sane timeout for poll() */
	314	#define BUFUNIT_TIMEOUT_MS(devc) (100 + ((devc->bufunitsize * 1000) / \
	315	(uint32_t)(devc->cur_samplerate)))
	316
695dc859	317	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
bb993797	318	{
ad9dbc1c	319	struct dev_context *devc = sdi->priv;
e71062d9	320	GSList *l;
ad9dbc1c	321	struct sr_trigger *trigger;
e71062d9	322	struct sr_channel *channel;
bb993797	323
ad9dbc1c KA	324	/* Clear capture state */
	325	devc->bytes_read = 0;
	326	devc->offset = 0;
	327
	328	/* Configure channels */
e71062d9 KA	329	devc->sampleunit = BL_SAMPLEUNIT_8_BITS;
	330
	331	for (l = sdi->channels; l; l = l->next) {
	332	channel = l->data;
	333	if (channel->index >= 8 && channel->enabled)
	334	devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	335	}
0bca2e75	336	devc->beaglelogic->set_sampleunit(devc);
ad9dbc1c	337
ca0d1a21	338	/* If continuous sampling, set the limit_samples to max possible value */
f82525e6	339	if (devc->triggerflags == BL_TRIGGERFLAGS_CONTINUOUS)
ca0d1a21	340	devc->limit_samples = (uint64_t)-1;
ca0d1a21	341
ad9dbc1c KA	342	/* Configure triggers & send header packet */
ad9dbc1c KA	343	if ((trigger = sr_session_trigger_get(sdi->session))) {
e743a47d AJ	344	int pre_trigger_samples = 0;
e743a47d AJ	345	if (devc->limit_samples > 0)
efad7ccc	346	pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100;
e743a47d	347	devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
98fec29e	348	if (!devc->stl)
e743a47d	349	return SR_ERR_MALLOC;
ad9dbc1c KA	350	devc->trigger_fired = FALSE;
	351	} else
	352	devc->trigger_fired = TRUE;
bee2b016	353	std_session_send_df_header(sdi);
ad9dbc1c KA	354
ad9dbc1c KA	355	/* Trigger and add poll on file */
0bca2e75	356	devc->beaglelogic->start(devc);
9b2b3ef9 KA	357	if (devc->beaglelogic == &beaglelogic_native_ops)
	358	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	359	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_native_receive_data,
	360	(void *)sdi);
	361	else
	362	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	363	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_tcp_receive_data,
ad9dbc1c	364	(void *)sdi);
bb993797 KA	365
	366	return SR_OK;
	367	}
	368
695dc859	369	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
bb993797	370	{
ad9dbc1c	371	struct dev_context *devc = sdi->priv;
ad9dbc1c	372
ad9dbc1c	373	/* Execute a stop on BeagleLogic */
0bca2e75	374	devc->beaglelogic->stop(devc);
ad9dbc1c	375
f7d7ee82	376	/* Flush the cache */
9b2b3ef9 KA	377	if (devc->beaglelogic == &beaglelogic_native_ops)
9b2b3ef9 KA	378	lseek(devc->fd, 0, SEEK_SET);
f7d7ee82 KA	379	else
f7d7ee82 KA	380	beaglelogic_tcp_drain(devc);
ad9dbc1c KA	381
	382	/* Remove session source and send EOT packet */
	383	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
bee2b016	384	std_session_send_df_end(sdi);
bb993797 KA	385
	386	return SR_OK;
	387	}
	388
dd5c48a6	389	static struct sr_dev_driver beaglelogic_driver_info = {
bb993797 KA	390	.name = "beaglelogic",
	391	.longname = "BeagleLogic",
	392	.api_version = 1,
c2fdcc25	393	.init = std_init,
700d6b64	394	.cleanup = std_cleanup,
bb993797	395	.scan = scan,
c01bf34c	396	.dev_list = std_dev_list,
d6f20d03	397	.dev_clear = dev_clear,
bb993797 KA	398	.config_get = config_get,
	399	.config_set = config_set,
	400	.config_list = config_list,
	401	.dev_open = dev_open,
	402	.dev_close = dev_close,
	403	.dev_acquisition_start = dev_acquisition_start,
	404	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	405	.context = NULL,
bb993797	406	};
dd5c48a6	407	SR_REGISTER_DEV_DRIVER(beaglelogic_driver_info);