[libsigrok.git] / hardware / zeroplus-logic-cube / zeroplus.c

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
 *
 * 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 <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <inttypes.h>
#include <glib.h>
#include <libusb.h>
#include <sigrok.h>
#include <sigrok-internal.h>
#include "analyzer.h"

#define USB_VENDOR			0x0c12
#define USB_VENDOR_NAME			"Zeroplus"
#define USB_MODEL_NAME			"Logic Cube"
#define USB_MODEL_VERSION		""

#define USB_INTERFACE			0
#define USB_CONFIGURATION		1
#define NUM_TRIGGER_STAGES		4
#define TRIGGER_TYPES			"01"

#define PACKET_SIZE			2048	/* ?? */

typedef struct {
	unsigned short pid;
	char model_name[64];
	unsigned int channels;
	unsigned int sample_depth;	/* In Ksamples/channel */
	unsigned int max_sampling_freq;
} model_t;

/*
 * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
 * same 128K sample depth.
 */
static model_t zeroplus_models[] = {
	{0x7009, "LAP-C(16064)",  16, 64,   100},
	{0x700A, "LAP-C(16128)",  16, 128,  200},
	{0x700B, "LAP-C(32128)",  32, 128,  200},
	{0x700C, "LAP-C(321000)", 32, 1024, 200},
	{0x700D, "LAP-C(322000)", 32, 2048, 200},
	{0x700E, "LAP-C(16032)",  16, 32,   100},
	{0x7016, "LAP-C(162000)", 16, 2048, 200},
};

static int capabilities[] = {
	SR_HWCAP_LOGIC_ANALYZER,
	SR_HWCAP_SAMPLERATE,
	SR_HWCAP_PROBECONFIG,
	SR_HWCAP_CAPTURE_RATIO,

	/* These are really implemented in the driver, not the hardware. */
	SR_HWCAP_LIMIT_SAMPLES,
	0,
};

/* List of struct sr_device_instance, maintained by opendev()/closedev(). */
static GSList *device_instances = NULL;

static libusb_context *usb_context = NULL;

/*
 * The hardware supports more samplerates than these, but these are the
 * options hardcoded into the vendor's Windows GUI.
 */

/*
 * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
 * that high.
 */
static uint64_t supported_samplerates[] = {
	SR_HZ(100),
	SR_HZ(500),
	SR_KHZ(1),
	SR_KHZ(5),
	SR_KHZ(25),
	SR_KHZ(50),
	SR_KHZ(100),
	SR_KHZ(200),
	SR_KHZ(400),
	SR_KHZ(800),
	SR_MHZ(1),
	SR_MHZ(10),
	SR_MHZ(25),
	SR_MHZ(50),
	SR_MHZ(80),
	SR_MHZ(100),
	SR_MHZ(150),
	SR_MHZ(200),
	0,
};

static struct sr_samplerates samplerates = {
	SR_HZ(0),
	SR_HZ(0),
	SR_HZ(0),
	supported_samplerates,
};

/* TODO: All of these should go in a device-specific struct. */
static uint64_t cur_samplerate = 0;
static uint64_t limit_samples = 0;
static int num_channels = 32; /* TODO: This isn't initialized before it's needed :( */
static uint64_t memory_size = 0;
static uint8_t probe_mask = 0;
static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 };
static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 };

// static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 };

static int hw_set_configuration(int device_index, int capability, void *value);

static unsigned int get_memory_size(int type)
{
	if (type == MEMORY_SIZE_8K)
		return 8 * 1024;
	else if (type == MEMORY_SIZE_64K)
		return 64 * 1024;
	else if (type == MEMORY_SIZE_128K)
		return 128 * 1024;
	else if (type == MEMORY_SIZE_512K)
		return 512 * 1024;
	else
		return 0;
}

static int opendev4(struct sr_device_instance **sdi, libusb_device *dev,
		    struct libusb_device_descriptor *des)
{
	unsigned int i;
	int err;

	if ((err = libusb_get_device_descriptor(dev, des))) {
		sr_warn("failed to get device descriptor: %d", err);
		return -1;
	}

	if (des->idVendor != USB_VENDOR)
		return 0;

	if (libusb_get_bus_number(dev) == (*sdi)->usb->bus
	    && libusb_get_device_address(dev) == (*sdi)->usb->address) {

		for (i = 0; i < ARRAY_SIZE(zeroplus_models); i++) {
			if (!(des->idProduct == zeroplus_models[i].pid))
				continue;

			sr_info("Found PID=%04X (%s)", des->idProduct,
				zeroplus_models[i].model_name);
			num_channels = zeroplus_models[i].channels;
			memory_size = zeroplus_models[i].sample_depth * 1024;
			break;
		}

		if (num_channels == 0) {
			sr_warn("Unknown ZeroPlus device %04X", des->idProduct);
			return -2;
		}

		/* Found it. */
		if (!(err = libusb_open(dev, &((*sdi)->usb->devhdl)))) {
			(*sdi)->status = SR_ST_ACTIVE;
			sr_info("opened device %d on %d.%d interface %d",
				(*sdi)->index, (*sdi)->usb->bus,
				(*sdi)->usb->address, USB_INTERFACE);
		} else {
			sr_warn("failed to open device: %d", err);
			*sdi = NULL;
		}
	}

	return 0;
}

static struct sr_device_instance *zp_open_device(int device_index)
{
	struct sr_device_instance *sdi;
	libusb_device **devlist;
	struct libusb_device_descriptor des;
	int err, i;

	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
		return NULL;

	libusb_get_device_list(usb_context, &devlist);
	if (sdi->status == SR_ST_INACTIVE) {
		/* Find the device by vendor, product, bus and address. */
		libusb_get_device_list(usb_context, &devlist);
		for (i = 0; devlist[i]; i++) {
			/* TODO: Error handling. */
			err = opendev4(&sdi, devlist[i], &des);
		}
	} else {
		/* Status must be SR_ST_ACTIVE, i.e. already in use... */
		sdi = NULL;
	}
	libusb_free_device_list(devlist, 1);

	if (sdi && sdi->status != SR_ST_ACTIVE)
		sdi = NULL;

	return sdi;
}

static void close_device(struct sr_device_instance *sdi)
{
	if (!sdi->usb->devhdl)
		return;

	sr_info("closing device %d on %d.%d interface %d", sdi->index,
		sdi->usb->bus, sdi->usb->address, USB_INTERFACE);
	libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE);
	libusb_close(sdi->usb->devhdl);
	sdi->usb->devhdl = NULL;
	sdi->status = SR_ST_INACTIVE;
}

static int configure_probes(GSList *probes)
{
	struct sr_probe *probe;
	GSList *l;
	int probe_bit, stage, i;
	char *tc;

	probe_mask = 0;
	for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
		trigger_mask[i] = 0;
		trigger_value[i] = 0;
	}

	stage = -1;
	for (l = probes; l; l = l->next) {
		probe = (struct sr_probe *)l->data;
		if (probe->enabled == FALSE)
			continue;
		probe_bit = 1 << (probe->index - 1);
		probe_mask |= probe_bit;

		if (probe->trigger) {
			stage = 0;
			for (tc = probe->trigger; *tc; tc++) {
				trigger_mask[stage] |= probe_bit;
				if (*tc == '1')
					trigger_value[stage] |= probe_bit;
				stage++;
				if (stage > NUM_TRIGGER_STAGES)
					return SR_ERR;
			}
		}
	}

	return SR_OK;
}

/*
 * API callbacks
 */

static int hw_init(const char *deviceinfo)
{
	struct sr_device_instance *sdi;
	struct libusb_device_descriptor des;
	libusb_device **devlist;
	int err, devcnt, i;

	/* Avoid compiler warnings. */
	deviceinfo = deviceinfo;

	if (libusb_init(&usb_context) != 0) {
		sr_warn("Failed to initialize USB.");
		return 0;
	}

	/* Find all ZeroPlus analyzers and add them to device list. */
	devcnt = 0;
	libusb_get_device_list(usb_context, &devlist);

	for (i = 0; devlist[i]; i++) {
		err = libusb_get_device_descriptor(devlist[i], &des);
		if (err != 0) {
			sr_warn("failed to get device descriptor: %d", err);
			continue;
		}

		if (des.idVendor == USB_VENDOR) {
			/*
			 * Definitely a Zeroplus.
			 * TODO: Any way to detect specific model/version in
			 * the zeroplus range?
			 */
			sdi = sr_device_instance_new(devcnt,
					SR_ST_INACTIVE, USB_VENDOR_NAME,
					USB_MODEL_NAME, USB_MODEL_VERSION);
			if (!sdi)
				return 0;
			device_instances =
			    g_slist_append(device_instances, sdi);
			sdi->usb = sr_usb_device_instance_new(
				libusb_get_bus_number(devlist[i]),
				libusb_get_device_address(devlist[i]), NULL);
			devcnt++;
		}
	}
	libusb_free_device_list(devlist, 1);

	return devcnt;
}

static int hw_opendev(int device_index)
{
	struct sr_device_instance *sdi;
	int err;

	if (!(sdi = zp_open_device(device_index))) {
		sr_warn("unable to open device");
		return SR_ERR;
	}

	err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE);
	if (err != 0) {
		sr_warn("Unable to claim interface: %d", err);
		return SR_ERR;
	}
	analyzer_reset(sdi->usb->devhdl);
	analyzer_initialize(sdi->usb->devhdl);

	analyzer_set_memory_size(MEMORY_SIZE_512K);
	// analyzer_set_freq(g_freq, g_freq_scale);
	analyzer_set_trigger_count(1);
	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
	// * get_memory_size(g_memory_size)) / 100) >> 2);
	analyzer_set_ramsize_trigger_address(
		(100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);

#if 0
	if (g_double_mode == 1)
		analyzer_set_compression(COMPRESSION_DOUBLE);
	else if (g_compression == 1)
		analyzer_set_compression(COMPRESSION_ENABLE);
	else
#endif
	analyzer_set_compression(COMPRESSION_NONE);

	if (cur_samplerate == 0) {
		/* Samplerate hasn't been set. Default to the slowest one. */
		if (hw_set_configuration(device_index, SR_HWCAP_SAMPLERATE,
		     &samplerates.low) == SR_ERR)
			return SR_ERR;
	}

	return SR_OK;
}

static void hw_closedev(int device_index)
{
	struct sr_device_instance *sdi;

	if ((sdi = sr_get_device_instance(device_instances, device_index)))
		close_device(sdi);
}

static void hw_cleanup(void)
{
	GSList *l;

	/* Properly close all devices... */
	for (l = device_instances; l; l = l->next)
		close_device((struct sr_device_instance *)l->data);

	/* ...and free all their memory. */
	for (l = device_instances; l; l = l->next)
		g_free(l->data);
	g_slist_free(device_instances);
	device_instances = NULL;

	if (usb_context)
		libusb_exit(usb_context);
	usb_context = NULL;
}

static void *hw_get_device_info(int device_index, int device_info_id)
{
	struct sr_device_instance *sdi;
	void *info = NULL;

	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
		return NULL;

	switch (device_info_id) {
	case SR_DI_INSTANCE:
		info = sdi;
		break;
	case SR_DI_NUM_PROBES:
		info = GINT_TO_POINTER(num_channels);
		break;
	case SR_DI_SAMPLERATES:
		info = &samplerates;
		break;
	case SR_DI_TRIGGER_TYPES:
		info = TRIGGER_TYPES;
		break;
	case SR_DI_CUR_SAMPLERATE:
		info = &cur_samplerate;
		break;
	}

	return info;
}

static int hw_get_status(int device_index)
{
	struct sr_device_instance *sdi;

	sdi = sr_get_device_instance(device_instances, device_index);
	if (sdi)
		return sdi->status;
	else
		return SR_ST_NOT_FOUND;
}

static int *hw_get_capabilities(void)
{
	return capabilities;
}

/* TODO: This will set the same samplerate for all devices. */
static int set_configuration_samplerate(uint64_t samplerate)
{
	sr_info("%s(%" PRIu64 ")", __FUNCTION__, samplerate);
	if (samplerate > SR_MHZ(1))
		analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
	else if (samplerate > SR_KHZ(1))
		analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
	else
		analyzer_set_freq(samplerate, FREQ_SCALE_HZ);

	cur_samplerate = samplerate;

	return SR_OK;
}

static int hw_set_configuration(int device_index, int capability, void *value)
{
	struct sr_device_instance *sdi;
	uint64_t *tmp_u64;

	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
		return SR_ERR;

	switch (capability) {
	case SR_HWCAP_SAMPLERATE:
		tmp_u64 = value;
		return set_configuration_samplerate(*tmp_u64);
	case SR_HWCAP_PROBECONFIG:
		return configure_probes((GSList *) value);
	case SR_HWCAP_LIMIT_SAMPLES:
		tmp_u64 = value;
		limit_samples = *tmp_u64;
		return SR_OK;
	default:
		return SR_ERR;
	}
}

static int hw_start_acquisition(int device_index, gpointer session_device_id)
{
	struct sr_device_instance *sdi;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_header header;
	int res;
	unsigned int packet_num;
	unsigned char *buf;

	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
		return SR_ERR;

	/* push configured settings to device */
	analyzer_configure(sdi->usb->devhdl);

	analyzer_start(sdi->usb->devhdl);
	sr_info("Waiting for data");
	analyzer_wait_data(sdi->usb->devhdl);

	sr_info("Stop address    = 0x%x",
		analyzer_get_stop_address(sdi->usb->devhdl));
	sr_info("Now address     = 0x%x",
		analyzer_get_now_address(sdi->usb->devhdl));
	sr_info("Trigger address = 0x%x",
		analyzer_get_trigger_address(sdi->usb->devhdl));

	packet.type = SR_DF_HEADER;
	packet.length = sizeof(struct sr_datafeed_header);
	packet.payload = (unsigned char *)&header;
	header.feed_version = 1;
	gettimeofday(&header.starttime, NULL);
	header.samplerate = cur_samplerate;
	header.protocol_id = SR_PROTO_RAW;
	header.num_logic_probes = num_channels;
	header.num_analog_probes = 0;
	sr_session_bus(session_device_id, &packet);

	if (!(buf = g_try_malloc(PACKET_SIZE))) {
		sr_err("zeroplus: %s: buf malloc failed", __func__);
		return SR_ERR_MALLOC;
	}

	analyzer_read_start(sdi->usb->devhdl);
	/* Send the incoming transfer to the session bus. */
	for (packet_num = 0; packet_num < (memory_size * 4 / PACKET_SIZE);
	     packet_num++) {
		res = analyzer_read_data(sdi->usb->devhdl, buf, PACKET_SIZE);
#if 0
		sr_info("Tried to read %llx bytes, actually read %x bytes",
			PACKET_SIZE, res);
#endif

		packet.type = SR_DF_LOGIC;
		packet.length = PACKET_SIZE;
		packet.unitsize = 4;
		packet.payload = buf;
		sr_session_bus(session_device_id, &packet);
	}
	analyzer_read_stop(sdi->usb->devhdl);
	g_free(buf);

	packet.type = SR_DF_END;
	sr_session_bus(session_device_id, &packet);

	return SR_OK;
}

/* This stops acquisition on ALL devices, ignoring device_index. */
static void hw_stop_acquisition(int device_index, gpointer session_device_id)
{
	struct sr_datafeed_packet packet;
	struct sr_device_instance *sdi;

	packet.type = SR_DF_END;
	sr_session_bus(session_device_id, &packet);

	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
		return; /* TODO: Cry? */

	analyzer_reset(sdi->usb->devhdl);
	/* TODO: Need to cancel and free any queued up transfers. */
}

struct sr_device_plugin zeroplus_logic_cube_plugin_info = {
	.name = "zeroplus-logic-cube",
	.longname = "Zeroplus Logic Cube LAP-C series",
	.api_version = 1,
	.init = hw_init,
	.cleanup = hw_cleanup,
	.opendev = hw_opendev,
	.closedev = hw_closedev,
	.get_device_info = hw_get_device_info,
	.get_status = hw_get_status,
	.get_capabilities = hw_get_capabilities,
	.set_configuration = hw_set_configuration,
	.start_acquisition = hw_start_acquisition,
	.stop_acquisition = hw_stop_acquisition,
};
Commit	Line	Data
	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2010 Bert Vermeulen <bert@biot.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
	20	#include "config.h"
	21	#include <stdio.h>
	22	#include <stdlib.h>
	23	#include <sys/time.h>
	24	#include <inttypes.h>
	25	#include <glib.h>
	26	#include <libusb.h>
	27	#include <sigrok.h>
	28	#include <sigrok-internal.h>
	29	#include "analyzer.h"
	30
	31	#define USB_VENDOR 0x0c12
	32	#define USB_VENDOR_NAME "Zeroplus"
	33	#define USB_MODEL_NAME "Logic Cube"
	34	#define USB_MODEL_VERSION ""
	35
	36	#define USB_INTERFACE 0
	37	#define USB_CONFIGURATION 1
	38	#define NUM_TRIGGER_STAGES 4
	39	#define TRIGGER_TYPES "01"
	40
	41	#define PACKET_SIZE 2048 /* ?? */
	42
	43	typedef struct {
	44	unsigned short pid;
	45	char model_name[64];
	46	unsigned int channels;
	47	unsigned int sample_depth; /* In Ksamples/channel */
	48	unsigned int max_sampling_freq;
	49	} model_t;
	50
	51	/*
	52	* Note -- 16032, 16064 and 16128 usually -- but not always -- have the
	53	* same 128K sample depth.
	54	*/
	55	static model_t zeroplus_models[] = {
	56	{0x7009, "LAP-C(16064)", 16, 64, 100},
	57	{0x700A, "LAP-C(16128)", 16, 128, 200},
	58	{0x700B, "LAP-C(32128)", 32, 128, 200},
	59	{0x700C, "LAP-C(321000)", 32, 1024, 200},
	60	{0x700D, "LAP-C(322000)", 32, 2048, 200},
	61	{0x700E, "LAP-C(16032)", 16, 32, 100},
	62	{0x7016, "LAP-C(162000)", 16, 2048, 200},
	63	};
	64
	65	static int capabilities[] = {
	66	SR_HWCAP_LOGIC_ANALYZER,
	67	SR_HWCAP_SAMPLERATE,
	68	SR_HWCAP_PROBECONFIG,
	69	SR_HWCAP_CAPTURE_RATIO,
	70
	71	/* These are really implemented in the driver, not the hardware. */
	72	SR_HWCAP_LIMIT_SAMPLES,
	73	0,
	74	};
	75
	76	/* List of struct sr_device_instance, maintained by opendev()/closedev(). */
	77	static GSList *device_instances = NULL;
	78
	79	static libusb_context *usb_context = NULL;
	80
	81	/*
	82	* The hardware supports more samplerates than these, but these are the
	83	* options hardcoded into the vendor's Windows GUI.
	84	*/
	85
	86	/*
	87	* TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
	88	* that high.
	89	*/
	90	static uint64_t supported_samplerates[] = {
	91	SR_HZ(100),
	92	SR_HZ(500),
	93	SR_KHZ(1),
	94	SR_KHZ(5),
	95	SR_KHZ(25),
	96	SR_KHZ(50),
	97	SR_KHZ(100),
	98	SR_KHZ(200),
	99	SR_KHZ(400),
	100	SR_KHZ(800),
	101	SR_MHZ(1),
	102	SR_MHZ(10),
	103	SR_MHZ(25),
	104	SR_MHZ(50),
	105	SR_MHZ(80),
	106	SR_MHZ(100),
	107	SR_MHZ(150),
	108	SR_MHZ(200),
	109	0,
	110	};
	111
	112	static struct sr_samplerates samplerates = {
	113	SR_HZ(0),
	114	SR_HZ(0),
	115	SR_HZ(0),
	116	supported_samplerates,
	117	};
	118
	119	/* TODO: All of these should go in a device-specific struct. */
	120	static uint64_t cur_samplerate = 0;
	121	static uint64_t limit_samples = 0;
	122	static int num_channels = 32; /* TODO: This isn't initialized before it's needed :( */
	123	static uint64_t memory_size = 0;
	124	static uint8_t probe_mask = 0;
	125	static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 };
	126	static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 };
	127
	128	// static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 };
	129
	130	static int hw_set_configuration(int device_index, int capability, void *value);
	131
	132	static unsigned int get_memory_size(int type)
	133	{
	134	if (type == MEMORY_SIZE_8K)
	135	return 8 * 1024;
	136	else if (type == MEMORY_SIZE_64K)
	137	return 64 * 1024;
	138	else if (type == MEMORY_SIZE_128K)
	139	return 128 * 1024;
	140	else if (type == MEMORY_SIZE_512K)
	141	return 512 * 1024;
	142	else
	143	return 0;
	144	}
	145
	146	static int opendev4(struct sr_device_instance *sdi, libusb_device dev,
	147	struct libusb_device_descriptor *des)
	148	{
	149	unsigned int i;
	150	int err;
	151
	152	if ((err = libusb_get_device_descriptor(dev, des))) {
	153	sr_warn("failed to get device descriptor: %d", err);
	154	return -1;
	155	}
	156
	157	if (des->idVendor != USB_VENDOR)
	158	return 0;
	159
	160	if (libusb_get_bus_number(dev) == (*sdi)->usb->bus
	161	&& libusb_get_device_address(dev) == (*sdi)->usb->address) {
	162
	163	for (i = 0; i < ARRAY_SIZE(zeroplus_models); i++) {
	164	if (!(des->idProduct == zeroplus_models[i].pid))
	165	continue;
	166
	167	sr_info("Found PID=%04X (%s)", des->idProduct,
	168	zeroplus_models[i].model_name);
	169	num_channels = zeroplus_models[i].channels;
	170	memory_size = zeroplus_models[i].sample_depth * 1024;
	171	break;
	172	}
	173
	174	if (num_channels == 0) {
	175	sr_warn("Unknown ZeroPlus device %04X", des->idProduct);
	176	return -2;
	177	}
	178
	179	/* Found it. */
	180	if (!(err = libusb_open(dev, &((*sdi)->usb->devhdl)))) {
	181	(*sdi)->status = SR_ST_ACTIVE;
	182	sr_info("opened device %d on %d.%d interface %d",
	183	(sdi)->index, (sdi)->usb->bus,
	184	(*sdi)->usb->address, USB_INTERFACE);
	185	} else {
	186	sr_warn("failed to open device: %d", err);
	187	*sdi = NULL;
	188	}
	189	}
	190
	191	return 0;
	192	}
	193
	194	static struct sr_device_instance *zp_open_device(int device_index)
	195	{
	196	struct sr_device_instance *sdi;
	197	libusb_device **devlist;
	198	struct libusb_device_descriptor des;
	199	int err, i;
	200
	201	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	202	return NULL;
	203
	204	libusb_get_device_list(usb_context, &devlist);
	205	if (sdi->status == SR_ST_INACTIVE) {
	206	/* Find the device by vendor, product, bus and address. */
	207	libusb_get_device_list(usb_context, &devlist);
	208	for (i = 0; devlist[i]; i++) {
	209	/* TODO: Error handling. */
	210	err = opendev4(&sdi, devlist[i], &des);
	211	}
	212	} else {
	213	/* Status must be SR_ST_ACTIVE, i.e. already in use... */
	214	sdi = NULL;
	215	}
	216	libusb_free_device_list(devlist, 1);
	217
	218	if (sdi && sdi->status != SR_ST_ACTIVE)
	219	sdi = NULL;
	220
	221	return sdi;
	222	}
	223
	224	static void close_device(struct sr_device_instance *sdi)
	225	{
	226	if (!sdi->usb->devhdl)
	227	return;
	228
	229	sr_info("closing device %d on %d.%d interface %d", sdi->index,
	230	sdi->usb->bus, sdi->usb->address, USB_INTERFACE);
	231	libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE);
	232	libusb_close(sdi->usb->devhdl);
	233	sdi->usb->devhdl = NULL;
	234	sdi->status = SR_ST_INACTIVE;
	235	}
	236
	237	static int configure_probes(GSList *probes)
	238	{
	239	struct sr_probe *probe;
	240	GSList *l;
	241	int probe_bit, stage, i;
	242	char *tc;
	243
	244	probe_mask = 0;
	245	for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
	246	trigger_mask[i] = 0;
	247	trigger_value[i] = 0;
	248	}
	249
	250	stage = -1;
	251	for (l = probes; l; l = l->next) {
	252	probe = (struct sr_probe *)l->data;
	253	if (probe->enabled == FALSE)
	254	continue;
	255	probe_bit = 1 << (probe->index - 1);
	256	probe_mask \|= probe_bit;
	257
	258	if (probe->trigger) {
	259	stage = 0;
	260	for (tc = probe->trigger; *tc; tc++) {
	261	trigger_mask[stage] \|= probe_bit;
	262	if (*tc == '1')
	263	trigger_value[stage] \|= probe_bit;
	264	stage++;
	265	if (stage > NUM_TRIGGER_STAGES)
	266	return SR_ERR;
	267	}
	268	}
	269	}
	270
	271	return SR_OK;
	272	}
	273
	274	/*
	275	* API callbacks
	276	*/
	277
	278	static int hw_init(const char *deviceinfo)
	279	{
	280	struct sr_device_instance *sdi;
	281	struct libusb_device_descriptor des;
	282	libusb_device **devlist;
	283	int err, devcnt, i;
	284
	285	/* Avoid compiler warnings. */
	286	deviceinfo = deviceinfo;
	287
	288	if (libusb_init(&usb_context) != 0) {
	289	sr_warn("Failed to initialize USB.");
	290	return 0;
	291	}
	292
	293	/* Find all ZeroPlus analyzers and add them to device list. */
	294	devcnt = 0;
	295	libusb_get_device_list(usb_context, &devlist);
	296
	297	for (i = 0; devlist[i]; i++) {
	298	err = libusb_get_device_descriptor(devlist[i], &des);
	299	if (err != 0) {
	300	sr_warn("failed to get device descriptor: %d", err);
	301	continue;
	302	}
	303
	304	if (des.idVendor == USB_VENDOR) {
	305	/*
	306	* Definitely a Zeroplus.
	307	* TODO: Any way to detect specific model/version in
	308	* the zeroplus range?
	309	*/
	310	sdi = sr_device_instance_new(devcnt,
	311	SR_ST_INACTIVE, USB_VENDOR_NAME,
	312	USB_MODEL_NAME, USB_MODEL_VERSION);
	313	if (!sdi)
	314	return 0;
	315	device_instances =
	316	g_slist_append(device_instances, sdi);
	317	sdi->usb = sr_usb_device_instance_new(
	318	libusb_get_bus_number(devlist[i]),
	319	libusb_get_device_address(devlist[i]), NULL);
	320	devcnt++;
	321	}
	322	}
	323	libusb_free_device_list(devlist, 1);
	324
	325	return devcnt;
	326	}
	327
	328	static int hw_opendev(int device_index)
	329	{
	330	struct sr_device_instance *sdi;
	331	int err;
	332
	333	if (!(sdi = zp_open_device(device_index))) {
	334	sr_warn("unable to open device");
	335	return SR_ERR;
	336	}
	337
	338	err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE);
	339	if (err != 0) {
	340	sr_warn("Unable to claim interface: %d", err);
	341	return SR_ERR;
	342	}
	343	analyzer_reset(sdi->usb->devhdl);
	344	analyzer_initialize(sdi->usb->devhdl);
	345
	346	analyzer_set_memory_size(MEMORY_SIZE_512K);
	347	// analyzer_set_freq(g_freq, g_freq_scale);
	348	analyzer_set_trigger_count(1);
	349	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
	350	// * get_memory_size(g_memory_size)) / 100) >> 2);
	351	analyzer_set_ramsize_trigger_address(
	352	(100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);
	353
	354	#if 0
	355	if (g_double_mode == 1)
	356	analyzer_set_compression(COMPRESSION_DOUBLE);
	357	else if (g_compression == 1)
	358	analyzer_set_compression(COMPRESSION_ENABLE);
	359	else
	360	#endif
	361	analyzer_set_compression(COMPRESSION_NONE);
	362
	363	if (cur_samplerate == 0) {
	364	/* Samplerate hasn't been set. Default to the slowest one. */
	365	if (hw_set_configuration(device_index, SR_HWCAP_SAMPLERATE,
	366	&samplerates.low) == SR_ERR)
	367	return SR_ERR;
	368	}
	369
	370	return SR_OK;
	371	}
	372
	373	static void hw_closedev(int device_index)
	374	{
	375	struct sr_device_instance *sdi;
	376
	377	if ((sdi = sr_get_device_instance(device_instances, device_index)))
	378	close_device(sdi);
	379	}
	380
	381	static void hw_cleanup(void)
	382	{
	383	GSList *l;
	384
	385	/* Properly close all devices... */
	386	for (l = device_instances; l; l = l->next)
	387	close_device((struct sr_device_instance *)l->data);
	388
	389	/* ...and free all their memory. */
	390	for (l = device_instances; l; l = l->next)
	391	g_free(l->data);
	392	g_slist_free(device_instances);
	393	device_instances = NULL;
	394
	395	if (usb_context)
	396	libusb_exit(usb_context);
	397	usb_context = NULL;
	398	}
	399
	400	static void *hw_get_device_info(int device_index, int device_info_id)
	401	{
	402	struct sr_device_instance *sdi;
	403	void *info = NULL;
	404
	405	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	406	return NULL;
	407
	408	switch (device_info_id) {
	409	case SR_DI_INSTANCE:
	410	info = sdi;
	411	break;
	412	case SR_DI_NUM_PROBES:
	413	info = GINT_TO_POINTER(num_channels);
	414	break;
	415	case SR_DI_SAMPLERATES:
	416	info = &samplerates;
	417	break;
	418	case SR_DI_TRIGGER_TYPES:
	419	info = TRIGGER_TYPES;
	420	break;
	421	case SR_DI_CUR_SAMPLERATE:
	422	info = &cur_samplerate;
	423	break;
	424	}
	425
	426	return info;
	427	}
	428
	429	static int hw_get_status(int device_index)
	430	{
	431	struct sr_device_instance *sdi;
	432
	433	sdi = sr_get_device_instance(device_instances, device_index);
	434	if (sdi)
	435	return sdi->status;
	436	else
	437	return SR_ST_NOT_FOUND;
	438	}
	439
	440	static int *hw_get_capabilities(void)
	441	{
	442	return capabilities;
	443	}
	444
	445	/* TODO: This will set the same samplerate for all devices. */
	446	static int set_configuration_samplerate(uint64_t samplerate)
	447	{
	448	sr_info("%s(%" PRIu64 ")", __FUNCTION__, samplerate);
	449	if (samplerate > SR_MHZ(1))
	450	analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
	451	else if (samplerate > SR_KHZ(1))
	452	analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
	453	else
	454	analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
	455
	456	cur_samplerate = samplerate;
	457
	458	return SR_OK;
	459	}
	460
	461	static int hw_set_configuration(int device_index, int capability, void *value)
	462	{
	463	struct sr_device_instance *sdi;
	464	uint64_t *tmp_u64;
	465
	466	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	467	return SR_ERR;
	468
	469	switch (capability) {
	470	case SR_HWCAP_SAMPLERATE:
	471	tmp_u64 = value;
	472	return set_configuration_samplerate(*tmp_u64);
	473	case SR_HWCAP_PROBECONFIG:
	474	return configure_probes((GSList *) value);
	475	case SR_HWCAP_LIMIT_SAMPLES:
	476	tmp_u64 = value;
	477	limit_samples = *tmp_u64;
	478	return SR_OK;
	479	default:
	480	return SR_ERR;
	481	}
	482	}
	483
	484	static int hw_start_acquisition(int device_index, gpointer session_device_id)
	485	{
	486	struct sr_device_instance *sdi;
	487	struct sr_datafeed_packet packet;
	488	struct sr_datafeed_header header;
	489	int res;
	490	unsigned int packet_num;
	491	unsigned char *buf;
	492
	493	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	494	return SR_ERR;
	495
	496	/* push configured settings to device */
	497	analyzer_configure(sdi->usb->devhdl);
	498
	499	analyzer_start(sdi->usb->devhdl);
	500	sr_info("Waiting for data");
	501	analyzer_wait_data(sdi->usb->devhdl);
	502
	503	sr_info("Stop address = 0x%x",
	504	analyzer_get_stop_address(sdi->usb->devhdl));
	505	sr_info("Now address = 0x%x",
	506	analyzer_get_now_address(sdi->usb->devhdl));
	507	sr_info("Trigger address = 0x%x",
	508	analyzer_get_trigger_address(sdi->usb->devhdl));
	509
	510	packet.type = SR_DF_HEADER;
	511	packet.length = sizeof(struct sr_datafeed_header);
	512	packet.payload = (unsigned char *)&header;
	513	header.feed_version = 1;
	514	gettimeofday(&header.starttime, NULL);
	515	header.samplerate = cur_samplerate;
	516	header.protocol_id = SR_PROTO_RAW;
	517	header.num_logic_probes = num_channels;
	518	header.num_analog_probes = 0;
	519	sr_session_bus(session_device_id, &packet);
	520
	521	if (!(buf = g_try_malloc(PACKET_SIZE))) {
	522	sr_err("zeroplus: %s: buf malloc failed", __func__);
	523	return SR_ERR_MALLOC;
	524	}
	525
	526	analyzer_read_start(sdi->usb->devhdl);
	527	/* Send the incoming transfer to the session bus. */
	528	for (packet_num = 0; packet_num < (memory_size * 4 / PACKET_SIZE);
	529	packet_num++) {
	530	res = analyzer_read_data(sdi->usb->devhdl, buf, PACKET_SIZE);
	531	#if 0
	532	sr_info("Tried to read %llx bytes, actually read %x bytes",
	533	PACKET_SIZE, res);
	534	#endif
	535
	536	packet.type = SR_DF_LOGIC;
	537	packet.length = PACKET_SIZE;
	538	packet.unitsize = 4;
	539	packet.payload = buf;
	540	sr_session_bus(session_device_id, &packet);
	541	}
	542	analyzer_read_stop(sdi->usb->devhdl);
	543	g_free(buf);
	544
	545	packet.type = SR_DF_END;
	546	sr_session_bus(session_device_id, &packet);
	547
	548	return SR_OK;
	549	}
	550
	551	/* This stops acquisition on ALL devices, ignoring device_index. */
	552	static void hw_stop_acquisition(int device_index, gpointer session_device_id)
	553	{
	554	struct sr_datafeed_packet packet;
	555	struct sr_device_instance *sdi;
	556
	557	packet.type = SR_DF_END;
	558	sr_session_bus(session_device_id, &packet);
	559
	560	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	561	return; /* TODO: Cry? */
	562
	563	analyzer_reset(sdi->usb->devhdl);
	564	/* TODO: Need to cancel and free any queued up transfers. */
	565	}
	566
	567	struct sr_device_plugin zeroplus_logic_cube_plugin_info = {
	568	.name = "zeroplus-logic-cube",
	569	.longname = "Zeroplus Logic Cube LAP-C series",
	570	.api_version = 1,
	571	.init = hw_init,
	572	.cleanup = hw_cleanup,
	573	.opendev = hw_opendev,
	574	.closedev = hw_closedev,
	575	.get_device_info = hw_get_device_info,
	576	.get_status = hw_get_status,
	577	.get_capabilities = hw_get_capabilities,
	578	.set_configuration = hw_set_configuration,
	579	.start_acquisition = hw_start_acquisition,
	580	.stop_acquisition = hw_stop_acquisition,
	581	};