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

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 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_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)-1;
	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 == NULL) {
		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;
		}
	}

	if (maxch > 8)
		maxch = NUM_CHANNELS;
	else
		maxch = 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 == NULL) {
		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;
		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);
	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 == &beaglelogic_native_ops)
		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);

	if (devc->tcp_buffer)
		g_free(devc->tcp_buffer);

	return SR_OK;
}

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);

	/* 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);

	/* lseek to offset 0, flushes the cache */
	if (devc->beaglelogic == &beaglelogic_native_ops)
		lseek(devc->fd, 0, SEEK_SET);

	/* 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 = std_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	*
	4	* Copyright (C) 2014 Kumar Abhishek <abhishek@theembeddedkitchen.net>
	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 BV	35	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	36	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET,
	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;
	70	devc->limit_samples = (uint64_t)-1;
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 */
	96	if (conn == NULL) {
	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
6eab3021	113	if (maxch > 8)
ad9dbc1c	114	maxch = NUM_CHANNELS;
6eab3021	115	else
ad9dbc1c	116	maxch = 8;
ad9dbc1c	117
6eab3021 KA	118	sdi = g_new0(struct sr_dev_inst, 1);
	119	sdi->status = SR_ST_INACTIVE;
	120	sdi->model = g_strdup("BeagleLogic");
	121	sdi->version = g_strdup("1.0");
ad9dbc1c	122
6eab3021	123	devc = beaglelogic_devc_alloc();
ad9dbc1c	124
9b2b3ef9 KA	125	if (conn == NULL) {
	126	devc->beaglelogic = &beaglelogic_native_ops;
	127	sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);
	128	} else {
	129	devc->read_timeout = 1000 * 1000;
	130	devc->beaglelogic = &beaglelogic_tcp_ops;
	131	devc->address = g_strdup(params[1]);
	132	devc->port = g_strdup(params[2]);
	133	g_strfreev(params);
	134
	135	if (devc->beaglelogic->open(devc) != SR_OK)
	136	goto err_free;
	137	if (beaglelogic_tcp_detect(devc) != SR_OK)
	138	goto err_free;
	139	sr_info("BeagleLogic device found at %s : %s",
	140	devc->address, devc->port);
	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));
9b2b3ef9 KA	150	err_free:
	151	g_free(sdi->model);
	152	g_free(sdi->version);
	153	g_free(devc);
	154	g_free(sdi);
	155
	156	return NULL;
bb993797 KA	157	}
bb993797 KA	158
bb993797 KA	159	static int dev_open(struct sr_dev_inst *sdi)
bb993797 KA	160	{
ad9dbc1c KA	161	struct dev_context *devc = sdi->priv;
	162
	163	/* Open BeagleLogic */
9b2b3ef9 KA	164	if (devc->beaglelogic == &beaglelogic_native_ops)
	165	if (devc->beaglelogic->open(devc))
	166	return SR_ERR;
ad9dbc1c KA	167
ad9dbc1c KA	168	/* Set fd and local attributes */
9b2b3ef9 KA	169	if (devc->beaglelogic == &beaglelogic_tcp_ops)
	170	devc->pollfd.fd = devc->socket;
	171	else
	172	devc->pollfd.fd = devc->fd;
ad9dbc1c	173	devc->pollfd.events = G_IO_IN;
89efe064	174	devc->pollfd.revents = 0;
ad9dbc1c KA	175
ad9dbc1c KA	176	/* Get the default attributes */
0bca2e75 KA	177	devc->beaglelogic->get_samplerate(devc);
	178	devc->beaglelogic->get_sampleunit(devc);
	179	devc->beaglelogic->get_buffersize(devc);
	180	devc->beaglelogic->get_bufunitsize(devc);
ad9dbc1c	181
713f3f84 KA	182	/* Set the triggerflags to default for continuous capture unless we
	183	* explicitly limit samples using SR_CONF_LIMIT_SAMPLES */
	184	devc->triggerflags = BL_TRIGGERFLAGS_CONTINUOUS;
0bca2e75	185	devc->beaglelogic->set_triggerflags(devc);
713f3f84	186
ad9dbc1c	187	/* Map the kernel capture FIFO for reads, saves 1 level of memcpy */
9b2b3ef9 KA	188	if (devc->beaglelogic == &beaglelogic_native_ops) {
	189	if (devc->beaglelogic->mmap(devc) != SR_OK) {
	190	sr_err("Unable to map capture buffer");
	191	devc->beaglelogic->close(devc);
	192	return SR_ERR;
	193	}
	194	} else {
	195	devc->tcp_buffer = g_malloc(TCP_BUFFER_SIZE);
ad9dbc1c	196	}
bb993797	197
bb993797 KA	198	return SR_OK;
	199	}
	200
	201	static int dev_close(struct sr_dev_inst *sdi)
	202	{
ad9dbc1c	203	struct dev_context *devc = sdi->priv;
bb993797	204
093e1cba	205	/* Close the memory mapping and the file */
9b2b3ef9 KA	206	if (devc->beaglelogic == &beaglelogic_native_ops)
9b2b3ef9 KA	207	devc->beaglelogic->munmap(devc);
0bca2e75	208	devc->beaglelogic->close(devc);
093e1cba	209
9b2b3ef9 KA	210	if (devc->tcp_buffer)
	211	g_free(devc->tcp_buffer);
	212
bb993797 KA	213	return SR_OK;
	214	}
	215
dd7a72ea UH	216	static int config_get(uint32_t key, GVariant **data,
dd7a72ea UH	217	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
bb993797	218	{
ad9dbc1c	219	struct dev_context *devc = sdi->priv;
dcd438ee	220
bb993797 KA	221	(void)cg;
bb993797 KA	222
bb993797	223	switch (key) {
ad9dbc1c KA	224	case SR_CONF_LIMIT_SAMPLES:
	225	*data = g_variant_new_uint64(devc->limit_samples);
	226	break;
ad9dbc1c KA	227	case SR_CONF_SAMPLERATE:
	228	*data = g_variant_new_uint64(devc->cur_samplerate);
	229	break;
e743a47d AJ	230	case SR_CONF_CAPTURE_RATIO:
	231	*data = g_variant_new_uint64(devc->capture_ratio);
	232	break;
ad9dbc1c KA	233	case SR_CONF_NUM_LOGIC_CHANNELS:
	234	*data = g_variant_new_uint32(g_slist_length(sdi->channels));
	235	break;
bb993797 KA	236	default:
	237	return SR_ERR_NA;
	238	}
	239
ad9dbc1c	240	return SR_OK;
bb993797 KA	241	}
bb993797 KA	242
dd7a72ea UH	243	static int config_set(uint32_t key, GVariant *data,
dd7a72ea UH	244	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
bb993797	245	{
ad9dbc1c KA	246	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	247	uint64_t tmp_u64;
dcd438ee	248
bb993797 KA	249	(void)cg;
bb993797 KA	250
bb993797	251	switch (key) {
ad9dbc1c KA	252	case SR_CONF_SAMPLERATE:
ad9dbc1c KA	253	devc->cur_samplerate = g_variant_get_uint64(data);
0bca2e75	254	return devc->beaglelogic->set_samplerate(devc);
ad9dbc1c KA	255	case SR_CONF_LIMIT_SAMPLES:
	256	tmp_u64 = g_variant_get_uint64(data);
	257	devc->limit_samples = tmp_u64;
	258	devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;
	259
	260	/* Check if we have sufficient buffer size */
	261	tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
	262	if (tmp_u64 > devc->buffersize) {
	263	sr_warn("Insufficient buffer space has been allocated.");
	264	sr_warn("Please use \'echo <size in bytes> > "\
	265	BEAGLELOGIC_SYSFS_ATTR(memalloc) \
55f26c42	266	"\' to increase the buffer size, this"\
ad9dbc1c KA	267	" capture is now truncated to %d Msamples",
	268	devc->buffersize /
	269	(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
	270	}
0bca2e75	271	return devc->beaglelogic->set_triggerflags(devc);
e743a47d AJ	272	case SR_CONF_CAPTURE_RATIO:
e743a47d AJ	273	devc->capture_ratio = g_variant_get_uint64(data);
efad7ccc	274	break;
bb993797	275	default:
ad9dbc1c	276	return SR_ERR_NA;
bb993797 KA	277	}
bb993797 KA	278
ad9dbc1c	279	return SR_OK;
bb993797 KA	280	}
bb993797 KA	281
dd7a72ea UH	282	static int config_list(uint32_t key, GVariant **data,
dd7a72ea UH	283	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
bb993797	284	{
bb993797	285	switch (key) {
138589b0	286	case SR_CONF_SCAN_OPTIONS:
ad9dbc1c	287	case SR_CONF_DEVICE_OPTIONS:
05199c0a	288	return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
ad9dbc1c	289	case SR_CONF_SAMPLERATE:
53012da6	290	*data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates));
ad9dbc1c KA	291	break;
ad9dbc1c KA	292	case SR_CONF_TRIGGER_MATCH:
76d10d13	293	*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
ad9dbc1c	294	break;
bb993797 KA	295	default:
	296	return SR_ERR_NA;
	297	}
	298
a9010323	299	return SR_OK;
bb993797 KA	300	}
bb993797 KA	301
ad9dbc1c KA	302	/* get a sane timeout for poll() */
	303	#define BUFUNIT_TIMEOUT_MS(devc) (100 + ((devc->bufunitsize * 1000) / \
	304	(uint32_t)(devc->cur_samplerate)))
	305
695dc859	306	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
bb993797	307	{
ad9dbc1c	308	struct dev_context *devc = sdi->priv;
e71062d9	309	GSList *l;
ad9dbc1c	310	struct sr_trigger *trigger;
e71062d9	311	struct sr_channel *channel;
bb993797	312
ad9dbc1c KA	313	/* Clear capture state */
	314	devc->bytes_read = 0;
	315	devc->offset = 0;
	316
	317	/* Configure channels */
e71062d9 KA	318	devc->sampleunit = BL_SAMPLEUNIT_8_BITS;
	319
	320	for (l = sdi->channels; l; l = l->next) {
	321	channel = l->data;
	322	if (channel->index >= 8 && channel->enabled)
	323	devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	324	}
0bca2e75	325	devc->beaglelogic->set_sampleunit(devc);
ad9dbc1c KA	326
	327	/* Configure triggers & send header packet */
	328	if ((trigger = sr_session_trigger_get(sdi->session))) {
e743a47d AJ	329	int pre_trigger_samples = 0;
e743a47d AJ	330	if (devc->limit_samples > 0)
efad7ccc	331	pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100;
e743a47d	332	devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
98fec29e	333	if (!devc->stl)
e743a47d	334	return SR_ERR_MALLOC;
ad9dbc1c KA	335	devc->trigger_fired = FALSE;
	336	} else
	337	devc->trigger_fired = TRUE;
bee2b016	338	std_session_send_df_header(sdi);
ad9dbc1c KA	339
ad9dbc1c KA	340	/* Trigger and add poll on file */
0bca2e75	341	devc->beaglelogic->start(devc);
9b2b3ef9 KA	342	if (devc->beaglelogic == &beaglelogic_native_ops)
	343	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	344	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_native_receive_data,
	345	(void *)sdi);
	346	else
	347	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	348	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_tcp_receive_data,
ad9dbc1c	349	(void *)sdi);
bb993797 KA	350
	351	return SR_OK;
	352	}
	353
695dc859	354	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
bb993797	355	{
ad9dbc1c	356	struct dev_context *devc = sdi->priv;
ad9dbc1c	357
ad9dbc1c	358	/* Execute a stop on BeagleLogic */
0bca2e75	359	devc->beaglelogic->stop(devc);
ad9dbc1c KA	360
ad9dbc1c KA	361	/* lseek to offset 0, flushes the cache */
9b2b3ef9 KA	362	if (devc->beaglelogic == &beaglelogic_native_ops)
9b2b3ef9 KA	363	lseek(devc->fd, 0, SEEK_SET);
ad9dbc1c KA	364
	365	/* Remove session source and send EOT packet */
	366	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
bee2b016	367	std_session_send_df_end(sdi);
bb993797 KA	368
	369	return SR_OK;
	370	}
	371
dd5c48a6	372	static struct sr_dev_driver beaglelogic_driver_info = {
bb993797 KA	373	.name = "beaglelogic",
	374	.longname = "BeagleLogic",
	375	.api_version = 1,
c2fdcc25	376	.init = std_init,
700d6b64	377	.cleanup = std_cleanup,
bb993797	378	.scan = scan,
c01bf34c	379	.dev_list = std_dev_list,
f778bf02	380	.dev_clear = std_dev_clear,
bb993797 KA	381	.config_get = config_get,
	382	.config_set = config_set,
	383	.config_list = config_list,
	384	.dev_open = dev_open,
	385	.dev_close = dev_close,
	386	.dev_acquisition_start = dev_acquisition_start,
	387	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	388	.context = NULL,
bb993797	389	};
dd5c48a6	390	SR_REGISTER_DEV_DRIVER(beaglelogic_driver_info);