[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 period_ps = 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. */
	(void)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 int hw_closedev(int device_index)
{
	struct sr_device_instance *sdi;

	if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
		sr_err("lap-c: %s: sdi was NULL", __func__);
		return SR_ERR; /* TODO: SR_ERR_ARG? */
	}

	/* TODO */
	close_device(sdi);

	return SR_OK;
}

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 ")", __func__, 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;
	period_ps = 1000000000000 / 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_data)
{
	struct sr_device_instance *sdi;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_logic logic;
	struct sr_datafeed_header header;
	uint64_t samples_read;
	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.payload = &header;
	header.feed_version = 1;
	gettimeofday(&header.starttime, NULL);
	header.samplerate = cur_samplerate;
	header.num_logic_probes = num_channels;
	header.num_analog_probes = 0;
	sr_session_bus(session_data, &packet);

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

	samples_read = 0;
	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);
		sr_info("Tried to read %llx bytes, actually read %x bytes",
			PACKET_SIZE, res);

		packet.type = SR_DF_LOGIC;
		packet.timeoffset = samples_read * period_ps;
		packet.duration = res / 4 * period_ps;
		packet.payload = &logic;
		logic.length = PACKET_SIZE;
		logic.unitsize = 4;
		logic.data = buf;
		sr_session_bus(session_data, &packet);
		samples_read += res / 4;
	}
	analyzer_read_stop(sdi->usb->devhdl);
	g_free(buf);

	packet.type = SR_DF_END;
	sr_session_bus(session_data, &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 period_ps = 0;
	122	static uint64_t limit_samples = 0;
	123	static int num_channels = 32; /* TODO: This isn't initialized before it's needed :( */
	124	static uint64_t memory_size = 0;
	125	static uint8_t probe_mask = 0;
	126	static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 };
	127	static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 };
	128
	129	// static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 };
	130
	131	static int hw_set_configuration(int device_index, int capability, void *value);
	132
	133	static unsigned int get_memory_size(int type)
	134	{
	135	if (type == MEMORY_SIZE_8K)
	136	return 8 * 1024;
	137	else if (type == MEMORY_SIZE_64K)
	138	return 64 * 1024;
	139	else if (type == MEMORY_SIZE_128K)
	140	return 128 * 1024;
	141	else if (type == MEMORY_SIZE_512K)
	142	return 512 * 1024;
	143	else
	144	return 0;
	145	}
	146
	147	static int opendev4(struct sr_device_instance *sdi, libusb_device dev,
	148	struct libusb_device_descriptor *des)
	149	{
	150	unsigned int i;
	151	int err;
	152
	153	if ((err = libusb_get_device_descriptor(dev, des))) {
	154	sr_warn("failed to get device descriptor: %d", err);
	155	return -1;
	156	}
	157
	158	if (des->idVendor != USB_VENDOR)
	159	return 0;
	160
	161	if (libusb_get_bus_number(dev) == (*sdi)->usb->bus
	162	&& libusb_get_device_address(dev) == (*sdi)->usb->address) {
	163
	164	for (i = 0; i < ARRAY_SIZE(zeroplus_models); i++) {
	165	if (!(des->idProduct == zeroplus_models[i].pid))
	166	continue;
	167
	168	sr_info("Found PID=%04X (%s)", des->idProduct,
	169	zeroplus_models[i].model_name);
	170	num_channels = zeroplus_models[i].channels;
	171	memory_size = zeroplus_models[i].sample_depth * 1024;
	172	break;
	173	}
	174
	175	if (num_channels == 0) {
	176	sr_warn("Unknown ZeroPlus device %04X", des->idProduct);
	177	return -2;
	178	}
	179
	180	/* Found it. */
	181	if (!(err = libusb_open(dev, &((*sdi)->usb->devhdl)))) {
	182	(*sdi)->status = SR_ST_ACTIVE;
	183	sr_info("opened device %d on %d.%d interface %d",
	184	(sdi)->index, (sdi)->usb->bus,
	185	(*sdi)->usb->address, USB_INTERFACE);
	186	} else {
	187	sr_warn("failed to open device: %d", err);
	188	*sdi = NULL;
	189	}
	190	}
	191
	192	return 0;
	193	}
	194
	195	static struct sr_device_instance *zp_open_device(int device_index)
	196	{
	197	struct sr_device_instance *sdi;
	198	libusb_device **devlist;
	199	struct libusb_device_descriptor des;
	200	int err, i;
	201
	202	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	203	return NULL;
	204
	205	libusb_get_device_list(usb_context, &devlist);
	206	if (sdi->status == SR_ST_INACTIVE) {
	207	/* Find the device by vendor, product, bus and address. */
	208	libusb_get_device_list(usb_context, &devlist);
	209	for (i = 0; devlist[i]; i++) {
	210	/* TODO: Error handling. */
	211	err = opendev4(&sdi, devlist[i], &des);
	212	}
	213	} else {
	214	/* Status must be SR_ST_ACTIVE, i.e. already in use... */
	215	sdi = NULL;
	216	}
	217	libusb_free_device_list(devlist, 1);
	218
	219	if (sdi && sdi->status != SR_ST_ACTIVE)
	220	sdi = NULL;
	221
	222	return sdi;
	223	}
	224
	225	static void close_device(struct sr_device_instance *sdi)
	226	{
	227	if (!sdi->usb->devhdl)
	228	return;
	229
	230	sr_info("closing device %d on %d.%d interface %d", sdi->index,
	231	sdi->usb->bus, sdi->usb->address, USB_INTERFACE);
	232	libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE);
	233	libusb_close(sdi->usb->devhdl);
	234	sdi->usb->devhdl = NULL;
	235	sdi->status = SR_ST_INACTIVE;
	236	}
	237
	238	static int configure_probes(GSList *probes)
	239	{
	240	struct sr_probe *probe;
	241	GSList *l;
	242	int probe_bit, stage, i;
	243	char *tc;
	244
	245	probe_mask = 0;
	246	for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
	247	trigger_mask[i] = 0;
	248	trigger_value[i] = 0;
	249	}
	250
	251	stage = -1;
	252	for (l = probes; l; l = l->next) {
	253	probe = (struct sr_probe *)l->data;
	254	if (probe->enabled == FALSE)
	255	continue;
	256	probe_bit = 1 << (probe->index - 1);
	257	probe_mask \|= probe_bit;
	258
	259	if (probe->trigger) {
	260	stage = 0;
	261	for (tc = probe->trigger; *tc; tc++) {
	262	trigger_mask[stage] \|= probe_bit;
	263	if (*tc == '1')
	264	trigger_value[stage] \|= probe_bit;
	265	stage++;
	266	if (stage > NUM_TRIGGER_STAGES)
	267	return SR_ERR;
	268	}
	269	}
	270	}
	271
	272	return SR_OK;
	273	}
	274
	275	/*
	276	* API callbacks
	277	*/
	278
	279	static int hw_init(const char *deviceinfo)
	280	{
	281	struct sr_device_instance *sdi;
	282	struct libusb_device_descriptor des;
	283	libusb_device **devlist;
	284	int err, devcnt, i;
	285
	286	/* Avoid compiler warnings. */
	287	(void)deviceinfo;
	288
	289	if (libusb_init(&usb_context) != 0) {
	290	sr_warn("Failed to initialize USB.");
	291	return 0;
	292	}
	293
	294	/* Find all ZeroPlus analyzers and add them to device list. */
	295	devcnt = 0;
	296	libusb_get_device_list(usb_context, &devlist);
	297
	298	for (i = 0; devlist[i]; i++) {
	299	err = libusb_get_device_descriptor(devlist[i], &des);
	300	if (err != 0) {
	301	sr_warn("failed to get device descriptor: %d", err);
	302	continue;
	303	}
	304
	305	if (des.idVendor == USB_VENDOR) {
	306	/*
	307	* Definitely a Zeroplus.
	308	* TODO: Any way to detect specific model/version in
	309	* the zeroplus range?
	310	*/
	311	sdi = sr_device_instance_new(devcnt,
	312	SR_ST_INACTIVE, USB_VENDOR_NAME,
	313	USB_MODEL_NAME, USB_MODEL_VERSION);
	314	if (!sdi)
	315	return 0;
	316	device_instances =
	317	g_slist_append(device_instances, sdi);
	318	sdi->usb = sr_usb_device_instance_new(
	319	libusb_get_bus_number(devlist[i]),
	320	libusb_get_device_address(devlist[i]), NULL);
	321	devcnt++;
	322	}
	323	}
	324	libusb_free_device_list(devlist, 1);
	325
	326	return devcnt;
	327	}
	328
	329	static int hw_opendev(int device_index)
	330	{
	331	struct sr_device_instance *sdi;
	332	int err;
	333
	334	if (!(sdi = zp_open_device(device_index))) {
	335	sr_warn("unable to open device");
	336	return SR_ERR;
	337	}
	338
	339	err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE);
	340	if (err != 0) {
	341	sr_warn("Unable to claim interface: %d", err);
	342	return SR_ERR;
	343	}
	344	analyzer_reset(sdi->usb->devhdl);
	345	analyzer_initialize(sdi->usb->devhdl);
	346
	347	analyzer_set_memory_size(MEMORY_SIZE_512K);
	348	// analyzer_set_freq(g_freq, g_freq_scale);
	349	analyzer_set_trigger_count(1);
	350	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
	351	// * get_memory_size(g_memory_size)) / 100) >> 2);
	352	analyzer_set_ramsize_trigger_address(
	353	(100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);
	354
	355	#if 0
	356	if (g_double_mode == 1)
	357	analyzer_set_compression(COMPRESSION_DOUBLE);
	358	else if (g_compression == 1)
	359	analyzer_set_compression(COMPRESSION_ENABLE);
	360	else
	361	#endif
	362	analyzer_set_compression(COMPRESSION_NONE);
	363
	364	if (cur_samplerate == 0) {
	365	/* Samplerate hasn't been set. Default to the slowest one. */
	366	if (hw_set_configuration(device_index, SR_HWCAP_SAMPLERATE,
	367	&samplerates.low) == SR_ERR)
	368	return SR_ERR;
	369	}
	370
	371	return SR_OK;
	372	}
	373
	374	static int hw_closedev(int device_index)
	375	{
	376	struct sr_device_instance *sdi;
	377
	378	if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
	379	sr_err("lap-c: %s: sdi was NULL", __func__);
	380	return SR_ERR; /* TODO: SR_ERR_ARG? */
	381	}
	382
	383	/* TODO */
	384	close_device(sdi);
	385
	386	return SR_OK;
	387	}
	388
	389	static void hw_cleanup(void)
	390	{
	391	GSList *l;
	392
	393	/* Properly close all devices... */
	394	for (l = device_instances; l; l = l->next)
	395	close_device((struct sr_device_instance *)l->data);
	396
	397	/* ...and free all their memory. */
	398	for (l = device_instances; l; l = l->next)
	399	g_free(l->data);
	400	g_slist_free(device_instances);
	401	device_instances = NULL;
	402
	403	if (usb_context)
	404	libusb_exit(usb_context);
	405	usb_context = NULL;
	406	}
	407
	408	static void *hw_get_device_info(int device_index, int device_info_id)
	409	{
	410	struct sr_device_instance *sdi;
	411	void *info = NULL;
	412
	413	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	414	return NULL;
	415
	416	switch (device_info_id) {
	417	case SR_DI_INSTANCE:
	418	info = sdi;
	419	break;
	420	case SR_DI_NUM_PROBES:
	421	info = GINT_TO_POINTER(num_channels);
	422	break;
	423	case SR_DI_SAMPLERATES:
	424	info = &samplerates;
	425	break;
	426	case SR_DI_TRIGGER_TYPES:
	427	info = TRIGGER_TYPES;
	428	break;
	429	case SR_DI_CUR_SAMPLERATE:
	430	info = &cur_samplerate;
	431	break;
	432	}
	433
	434	return info;
	435	}
	436
	437	static int hw_get_status(int device_index)
	438	{
	439	struct sr_device_instance *sdi;
	440
	441	sdi = sr_get_device_instance(device_instances, device_index);
	442	if (sdi)
	443	return sdi->status;
	444	else
	445	return SR_ST_NOT_FOUND;
	446	}
	447
	448	static int *hw_get_capabilities(void)
	449	{
	450	return capabilities;
	451	}
	452
	453	/* TODO: This will set the same samplerate for all devices. */
	454	static int set_configuration_samplerate(uint64_t samplerate)
	455	{
	456	sr_info("%s(%" PRIu64 ")", __func__, samplerate);
	457	if (samplerate > SR_MHZ(1))
	458	analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
	459	else if (samplerate > SR_KHZ(1))
	460	analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
	461	else
	462	analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
	463
	464	cur_samplerate = samplerate;
	465	period_ps = 1000000000000 / samplerate;
	466
	467	return SR_OK;
	468	}
	469
	470	static int hw_set_configuration(int device_index, int capability, void *value)
	471	{
	472	struct sr_device_instance *sdi;
	473	uint64_t *tmp_u64;
	474
	475	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	476	return SR_ERR;
	477
	478	switch (capability) {
	479	case SR_HWCAP_SAMPLERATE:
	480	tmp_u64 = value;
	481	return set_configuration_samplerate(*tmp_u64);
	482	case SR_HWCAP_PROBECONFIG:
	483	return configure_probes((GSList *) value);
	484	case SR_HWCAP_LIMIT_SAMPLES:
	485	tmp_u64 = value;
	486	limit_samples = *tmp_u64;
	487	return SR_OK;
	488	default:
	489	return SR_ERR;
	490	}
	491	}
	492
	493	static int hw_start_acquisition(int device_index, gpointer session_data)
	494	{
	495	struct sr_device_instance *sdi;
	496	struct sr_datafeed_packet packet;
	497	struct sr_datafeed_logic logic;
	498	struct sr_datafeed_header header;
	499	uint64_t samples_read;
	500	int res;
	501	unsigned int packet_num;
	502	unsigned char *buf;
	503
	504	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	505	return SR_ERR;
	506
	507	/* push configured settings to device */
	508	analyzer_configure(sdi->usb->devhdl);
	509
	510	analyzer_start(sdi->usb->devhdl);
	511	sr_info("Waiting for data");
	512	analyzer_wait_data(sdi->usb->devhdl);
	513
	514	sr_info("Stop address = 0x%x", analyzer_get_stop_address(sdi->usb->devhdl));
	515	sr_info("Now address = 0x%x", analyzer_get_now_address(sdi->usb->devhdl));
	516	sr_info("Trigger address = 0x%x", analyzer_get_trigger_address(sdi->usb->devhdl));
	517
	518	packet.type = SR_DF_HEADER;
	519	packet.payload = &header;
	520	header.feed_version = 1;
	521	gettimeofday(&header.starttime, NULL);
	522	header.samplerate = cur_samplerate;
	523	header.num_logic_probes = num_channels;
	524	header.num_analog_probes = 0;
	525	sr_session_bus(session_data, &packet);
	526
	527	if (!(buf = g_try_malloc(PACKET_SIZE))) {
	528	sr_err("lap-c: %s: buf malloc failed", __func__);
	529	return SR_ERR_MALLOC;
	530	}
	531
	532	samples_read = 0;
	533	analyzer_read_start(sdi->usb->devhdl);
	534	/* Send the incoming transfer to the session bus. */
	535	for (packet_num = 0; packet_num < (memory_size * 4 / PACKET_SIZE);
	536	packet_num++) {
	537	res = analyzer_read_data(sdi->usb->devhdl, buf, PACKET_SIZE);
	538	sr_info("Tried to read %llx bytes, actually read %x bytes",
	539	PACKET_SIZE, res);
	540
	541	packet.type = SR_DF_LOGIC;
	542	packet.timeoffset = samples_read * period_ps;
	543	packet.duration = res / 4 * period_ps;
	544	packet.payload = &logic;
	545	logic.length = PACKET_SIZE;
	546	logic.unitsize = 4;
	547	logic.data = buf;
	548	sr_session_bus(session_data, &packet);
	549	samples_read += res / 4;
	550	}
	551	analyzer_read_stop(sdi->usb->devhdl);
	552	g_free(buf);
	553
	554	packet.type = SR_DF_END;
	555	sr_session_bus(session_data, &packet);
	556
	557	return SR_OK;
	558	}
	559
	560	/* This stops acquisition on ALL devices, ignoring device_index. */
	561	static void hw_stop_acquisition(int device_index, gpointer session_device_id)
	562	{
	563	struct sr_datafeed_packet packet;
	564	struct sr_device_instance *sdi;
	565
	566	packet.type = SR_DF_END;
	567	sr_session_bus(session_device_id, &packet);
	568
	569	if (!(sdi = sr_get_device_instance(device_instances, device_index)))
	570	return; /* TODO: Cry? */
	571
	572	analyzer_reset(sdi->usb->devhdl);
	573	/* TODO: Need to cancel and free any queued up transfers. */
	574	}
	575
	576	struct sr_device_plugin zeroplus_logic_cube_plugin_info = {
	577	.name = "zeroplus-logic-cube",
	578	.longname = "Zeroplus Logic Cube LAP-C series",
	579	.api_version = 1,
	580	.init = hw_init,
	581	.cleanup = hw_cleanup,
	582	.opendev = hw_opendev,
	583	.closedev = hw_closedev,
	584	.get_device_info = hw_get_device_info,
	585	.get_status = hw_get_status,
	586	.get_capabilities = hw_get_capabilities,
	587	.set_configuration = hw_set_configuration,
	588	.start_acquisition = hw_start_acquisition,
	589	.stop_acquisition = hw_stop_acquisition,
	590	};