[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 <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <inttypes.h>
#include <glib.h>
#include <libusb.h>
#include <sigrok.h>
#include "config.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.
 */
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[] = {
	HWCAP_LOGIC_ANALYZER,
	HWCAP_SAMPLERATE,
	HWCAP_PROBECONFIG,
	HWCAP_CAPTURE_RATIO,

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

/* List of struct sigrok_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[] = {
	100,
	500,
	KHZ(1),
	KHZ(5),
	KHZ(25),
	KHZ(50),
	KHZ(100),
	KHZ(200),
	KHZ(400),
	KHZ(800),
	MHZ(1),
	MHZ(10),
	MHZ(25),
	MHZ(50),
	MHZ(80),
	MHZ(100),
	MHZ(150),
	MHZ(200),
	0,
};

static struct samplerates samplerates = {
	0, 0, 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;
int num_channels = 32; /* TODO: This isn't initialized before it's needed :( */
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;
}

struct sigrok_device_instance *zp_open_device(int device_index)
{
	struct sigrok_device_instance *sdi;
	libusb_device **devlist;
	struct libusb_device_descriptor des;
	unsigned int j;
	int err, i;

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

	libusb_get_device_list(usb_context, &devlist);
	if (sdi->status == ST_INACTIVE) {
		/* Find the device by vendor, product, bus and address. */
		libusb_get_device_list(usb_context, &devlist);
		for (i = 0; devlist[i]; i++) {
			if ((err = libusb_get_device_descriptor(devlist[i],
			     &des))) {
				g_warning("failed to get device descriptor:"
					  "%d", err);
				continue;
			}

			if (des.idVendor == USB_VENDOR) {
				if (libusb_get_bus_number(devlist[i]) ==
				    sdi->usb->bus
				    && libusb_get_device_address(devlist[i]) ==
				    sdi->usb->address) {
					for (j = 0;
					     j < ARRAY_SIZE(zeroplus_models);
					     j++) {
						if (des.idProduct ==
						    zeroplus_models[j].pid) {
							g_message
							    ("Found PID=%04X (%s)",
							     des.idProduct,
							     zeroplus_models[j].
							     model_name);
							num_channels =
							    zeroplus_models[j].
							    channels;
							memory_size =
							    zeroplus_models[j].
							    sample_depth * 1024;
							break;
						}
					}
					if (num_channels == 0) {
						g_warning
						    ("Unknown ZeroPlus device %04X",
						     des.idProduct);
						continue;
					}
					/* Found it */
					if (!(err = libusb_open(devlist[i],
						 &(sdi->usb->devhdl)))) {
						sdi->status = ST_ACTIVE;
						g_message("opened device %d on"
						     " %d.%d interface %d",
						     sdi->index, sdi->usb->bus,
						     sdi->usb->address,
						     USB_INTERFACE);
					} else {
						g_warning("failed to open "
							  "device: %d", err);
						sdi = NULL;
					}
				}
			}
		}
	} else {
		/* Status must be ST_ACTIVE, i.e. already in use... */
		sdi = NULL;
	}
	libusb_free_device_list(devlist, 1);

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

	return sdi;
}

static void close_device(struct sigrok_device_instance *sdi)
{
	if (sdi->usb->devhdl) {
		g_message("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 = ST_INACTIVE;
	}
}

static int configure_probes(GSList *probes)
{
	struct 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 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 SIGROK_ERR;
			}
		}
	}

	return SIGROK_OK;
}

/*
 * API callbacks
 */

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

	/* QUICK HACK */
	deviceinfo = deviceinfo;

	if (libusb_init(&usb_context) != 0) {
		g_warning("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) {
			g_warning("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 = sigrok_device_instance_new(devcnt,
					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 = 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 sigrok_device_instance *sdi;
	int err;

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

	err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE);
	if (err != 0) {
		g_warning("Unable to claim interface: %d", err);
		return SIGROK_ERR;
	}
	analyzer_reset(sdi->usb->devhdl);
	analyzer_initialize(sdi->usb->devhdl);
	analyzer_configure(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) {
		/* Sample rate hasn't been set. Default to the slowest one. */
		if (hw_set_configuration(device_index, HWCAP_SAMPLERATE,
		     &samplerates.low) == SIGROK_ERR)
			return SIGROK_ERR;
	}

	return SIGROK_OK;
}

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

	if ((sdi = get_sigrok_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 sigrok_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 sigrok_device_instance *sdi;
	void *info;

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

	info = NULL;
	switch (device_info_id) {
	case DI_INSTANCE:
		info = sdi;
		break;
	case DI_NUM_PROBES:
		info = GINT_TO_POINTER(num_channels);
		break;
	case DI_SAMPLERATES:
		info = &samplerates;
		break;
	case DI_TRIGGER_TYPES:
		info = TRIGGER_TYPES;
		break;
	case DI_CUR_SAMPLERATE:
		info = &cur_samplerate;
		break;
	}

	return info;
}

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

	sdi = get_sigrok_device_instance(device_instances, device_index);
	if (sdi)
		return sdi->status;
	else
		return 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)
{
	g_message("%s(%llu)", __FUNCTION__, samplerate);
	if (samplerate > MHZ(1))
		analyzer_set_freq(samplerate / MHZ(1), FREQ_SCALE_MHZ);
	else if (samplerate > KHZ(1))
		analyzer_set_freq(samplerate / KHZ(1), FREQ_SCALE_KHZ);
	else
		analyzer_set_freq(samplerate, FREQ_SCALE_HZ);

	cur_samplerate = samplerate;

	return SIGROK_OK;
}

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

	if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
		return SIGROK_ERR;

	switch (capability) {
	case HWCAP_SAMPLERATE:
		tmp_u64 = value;
		return set_configuration_samplerate(*tmp_u64);
	case HWCAP_PROBECONFIG:
		return configure_probes((GSList *) value);
	case HWCAP_LIMIT_SAMPLES:
		limit_samples = strtoull(value, NULL, 10);
		return SIGROK_OK;
	default:
		return SIGROK_ERR;
	}
}

static int hw_start_acquisition(int device_index, gpointer session_device_id)
{
	struct sigrok_device_instance *sdi;
	struct datafeed_packet packet;
	struct datafeed_header header;
	int res;
	unsigned int packet_num;
	unsigned char *buf;

	if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
		return SIGROK_ERR;

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

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

	packet.type = DF_HEADER;
	packet.length = sizeof(struct datafeed_header);
	packet.payload = (unsigned char *)&header;
	header.feed_version = 1;
	gettimeofday(&header.starttime, NULL);
	header.samplerate = cur_samplerate;
	header.protocol_id = PROTO_RAW;
	header.num_probes = num_channels;
	session_bus(session_device_id, &packet);

	buf = g_malloc(PACKET_SIZE);
	if (!buf)
		return SIGROK_ERR;
	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);
		// g_message("Tried to read %llx bytes, actually read %x bytes", PACKET_SIZE, res);

		packet.type = DF_LOGIC32;
		packet.length = PACKET_SIZE;
		packet.payload = buf;
		session_bus(session_device_id, &packet);
	}
	analyzer_read_stop(sdi->usb->devhdl);
	g_free(buf);

	packet.type = DF_END;
	session_bus(session_device_id, &packet);

	return SIGROK_OK;
}

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

	packet.type = DF_END;
	session_bus(session_device_id, &packet);

	if (!(sdi = get_sigrok_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 device_plugin zeroplus_logic_cube_plugin_info = {
	"zeroplus-logic-cube",
	1,
	hw_init,
	hw_cleanup,
	hw_opendev,
	hw_closedev,
	hw_get_device_info,
	hw_get_status,
	hw_get_capabilities,
	hw_set_configuration,
	hw_start_acquisition,
	hw_stop_acquisition,
};
Commit	Line	Data
a1bb33af UH	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 <stdio.h>
	21	#include <stdlib.h>
	22	#include <sys/time.h>
	23	#include <inttypes.h>
	24	#include <glib.h>
	25	#include <libusb.h>
fed16f06	26	#include <sigrok.h>
a1bb33af	27	#include "config.h"
a1bb33af UH	28	#include "analyzer.h"
a1bb33af UH	29
fed16f06 UH	30	#define USB_VENDOR 0x0c12
fed16f06 UH	31	#define USB_VENDOR_NAME "Zeroplus"
a1bb33af UH	32	#define USB_MODEL_NAME "Logic Cube"
	33	#define USB_MODEL_VERSION ""
	34
	35	#define USB_INTERFACE 0
	36	#define USB_CONFIGURATION 1
	37	#define NUM_TRIGGER_STAGES 4
	38	#define TRIGGER_TYPES "01"
	39
fed16f06	40	#define PACKET_SIZE 2048 /* ?? */
a1bb33af UH	41
	42	typedef struct {
	43	unsigned short pid;
	44	char model_name[64];
	45	unsigned int channels;
fed16f06	46	unsigned int sample_depth; /* In Ksamples/channel */
a1bb33af UH	47	unsigned int max_sampling_freq;
	48	} model_t;
	49
fed16f06 UH	50	/*
	51	* Note -- 16032, 16064 and 16128 usually -- but not always -- have the
	52	* same 128K sample depth.
	53	*/
a1bb33af UH	54	model_t zeroplus_models[] = {
	55	{0x7009, "LAP-C(16064)", 16, 64, 100},
	56	{0x700A, "LAP-C(16128)", 16, 128, 200},
	57	{0x700B, "LAP-C(32128)", 32, 128, 200},
	58	{0x700C, "LAP-C(321000)", 32, 1024, 200},
	59	{0x700D, "LAP-C(322000)", 32, 2048, 200},
	60	{0x700E, "LAP-C(16032)", 16, 32, 100},
	61	{0x7016, "LAP-C(162000)", 16, 2048, 200},
	62	};
	63
	64	static int capabilities[] = {
	65	HWCAP_LOGIC_ANALYZER,
	66	HWCAP_SAMPLERATE,
	67	HWCAP_PROBECONFIG,
	68	HWCAP_CAPTURE_RATIO,
a1bb33af	69
fed16f06	70	/* These are really implemented in the driver, not the hardware. */
a1bb33af	71	HWCAP_LIMIT_SAMPLES,
fed16f06	72	0,
a1bb33af UH	73	};
a1bb33af UH	74
fed16f06	75	/* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */
a1bb33af UH	76	static GSList *device_instances = NULL;
	77
	78	static libusb_context *usb_context = NULL;
	79
fed16f06 UH	80	/*
	81	* The hardware supports more samplerates than these, but these are the
	82	* options hardcoded into the vendor's Windows GUI.
	83	*/
a1bb33af	84
fed16f06 UH	85	/*
	86	* TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
	87	* that high.
	88	*/
a1bb33af UH	89	static uint64_t supported_samplerates[] = {
	90	100,
	91	500,
	92	KHZ(1),
	93	KHZ(5),
	94	KHZ(25),
	95	KHZ(50),
	96	KHZ(100),
	97	KHZ(200),
	98	KHZ(400),
	99	KHZ(800),
	100	MHZ(1),
	101	MHZ(10),
	102	MHZ(25),
	103	MHZ(50),
	104	MHZ(80),
	105	MHZ(100),
	106	MHZ(150),
	107	MHZ(200),
fed16f06	108	0,
a1bb33af UH	109	};
	110
	111	static struct samplerates samplerates = {
fed16f06 UH	112	0, 0, 0,
fed16f06 UH	113	supported_samplerates,
a1bb33af UH	114	};
a1bb33af UH	115
fed16f06	116	/* TODO: All of these should go in a device-specific struct. */
a1bb33af UH	117	static uint64_t cur_samplerate = 0;
a1bb33af UH	118	static uint64_t limit_samples = 0;
fed16f06	119	int num_channels = 32; /* TODO: This isn't initialized before it's needed :( */
a1bb33af	120	uint64_t memory_size = 0;
86c5e279	121	static uint8_t probe_mask = 0;
fed16f06 UH	122	static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 };
fed16f06 UH	123	static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 };
a1bb33af	124
fed16f06	125	// static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 };
a1bb33af UH	126
	127	static int hw_set_configuration(int device_index, int capability, void *value);
	128
	129	static unsigned int get_memory_size(int type)
	130	{
fed16f06 UH	131	if (type == MEMORY_SIZE_8K)
	132	return 8 * 1024;
	133	else if (type == MEMORY_SIZE_64K)
	134	return 64 * 1024;
	135	else if (type == MEMORY_SIZE_128K)
	136	return 128 * 1024;
	137	else if (type == MEMORY_SIZE_512K)
	138	return 512 * 1024;
	139	else
	140	return 0;
a1bb33af UH	141	}
	142
	143	struct sigrok_device_instance *zp_open_device(int device_index)
	144	{
	145	struct sigrok_device_instance *sdi;
	146	libusb_device **devlist;
	147	struct libusb_device_descriptor des;
afc8e4de UH	148	unsigned int j;
afc8e4de UH	149	int err, i;
a1bb33af	150
fed16f06	151	if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
a1bb33af UH	152	return NULL;
	153
	154	libusb_get_device_list(usb_context, &devlist);
fed16f06 UH	155	if (sdi->status == ST_INACTIVE) {
fed16f06 UH	156	/* Find the device by vendor, product, bus and address. */
a1bb33af	157	libusb_get_device_list(usb_context, &devlist);
fed16f06 UH	158	for (i = 0; devlist[i]; i++) {
	159	if ((err = libusb_get_device_descriptor(devlist[i],
	160	&des))) {
	161	g_warning("failed to get device descriptor:"
	162	"%d", err);
a1bb33af UH	163	continue;
	164	}
	165
fed16f06 UH	166	if (des.idVendor == USB_VENDOR) {
	167	if (libusb_get_bus_number(devlist[i]) ==
	168	sdi->usb->bus
	169	&& libusb_get_device_address(devlist[i]) ==
	170	sdi->usb->address) {
	171	for (j = 0;
	172	j < ARRAY_SIZE(zeroplus_models);
	173	j++) {
	174	if (des.idProduct ==
	175	zeroplus_models[j].pid) {
	176	g_message
	177	("Found PID=%04X (%s)",
	178	des.idProduct,
	179	zeroplus_models[j].
	180	model_name);
	181	num_channels =
	182	zeroplus_models[j].
	183	channels;
	184	memory_size =
	185	zeroplus_models[j].
	186	sample_depth * 1024;
	187	break;
	188	}
	189	}
	190	if (num_channels == 0) {
	191	g_warning
	192	("Unknown ZeroPlus device %04X",
	193	des.idProduct);
	194	continue;
a1bb33af	195	}
fed16f06 UH	196	/* Found it */
	197	if (!(err = libusb_open(devlist[i],
	198	&(sdi->usb->devhdl)))) {
	199	sdi->status = ST_ACTIVE;
	200	g_message("opened device %d on"
	201	" %d.%d interface %d",
	202	sdi->index, sdi->usb->bus,
	203	sdi->usb->address,
	204	USB_INTERFACE);
	205	} else {
	206	g_warning("failed to open "
	207	"device: %d", err);
a1bb33af UH	208	sdi = NULL;
	209	}
	210	}
	211	}
	212	}
fed16f06 UH	213	} else {
fed16f06 UH	214	/* Status must be ST_ACTIVE, i.e. already in use... */
a1bb33af UH	215	sdi = NULL;
	216	}
	217	libusb_free_device_list(devlist, 1);
	218
fed16f06	219	if (sdi && sdi->status != ST_ACTIVE)
a1bb33af UH	220	sdi = NULL;
	221
	222	return sdi;
	223	}
	224
a1bb33af UH	225	static void close_device(struct sigrok_device_instance *sdi)
a1bb33af UH	226	{
fed16f06 UH	227	if (sdi->usb->devhdl) {
	228	g_message("closing device %d on %d.%d interface %d", sdi->index,
	229	sdi->usb->bus, sdi->usb->address, USB_INTERFACE);
a1bb33af UH	230	libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE);
	231	libusb_close(sdi->usb->devhdl);
	232	sdi->usb->devhdl = NULL;
	233	sdi->status = ST_INACTIVE;
	234	}
a1bb33af UH	235	}
a1bb33af UH	236
a1bb33af UH	237	static int configure_probes(GSList *probes)
	238	{
	239	struct probe *probe;
	240	GSList *l;
	241	int probe_bit, stage, i;
	242	char *tc;
	243
	244	probe_mask = 0;
fed16f06	245	for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
a1bb33af UH	246	trigger_mask[i] = 0;
	247	trigger_value[i] = 0;
	248	}
	249
	250	stage = -1;
fed16f06 UH	251	for (l = probes; l; l = l->next) {
	252	probe = (struct probe *)l->data;
	253	if (probe->enabled == FALSE)
a1bb33af UH	254	continue;
	255	probe_bit = 1 << (probe->index - 1);
	256	probe_mask \|= probe_bit;
fed16f06 UH	257
fed16f06 UH	258	if (probe->trigger) {
a1bb33af	259	stage = 0;
fed16f06	260	for (tc = probe->trigger; *tc; tc++) {
a1bb33af	261	trigger_mask[stage] \|= probe_bit;
fed16f06	262	if (*tc == '1')
a1bb33af UH	263	trigger_value[stage] \|= probe_bit;
a1bb33af UH	264	stage++;
fed16f06	265	if (stage > NUM_TRIGGER_STAGES)
e31b636d	266	return SIGROK_ERR;
a1bb33af UH	267	}
	268	}
	269	}
	270
	271	return SIGROK_OK;
	272	}
	273
a1bb33af UH	274	/*
	275	* API callbacks
	276	*/
	277
	278	static int hw_init(char *deviceinfo)
	279	{
	280	struct sigrok_device_instance *sdi;
	281	struct libusb_device_descriptor des;
	282	libusb_device **devlist;
	283	int err, devcnt, i;
	284
afc8e4de UH	285	/* QUICK HACK */
	286	deviceinfo = deviceinfo;
	287
fed16f06	288	if (libusb_init(&usb_context) != 0) {
a1bb33af UH	289	g_warning("Failed to initialize USB.");
	290	return 0;
	291	}
	292
fed16f06	293	/* Find all ZeroPlus analyzers and add them to device list. */
a1bb33af UH	294	devcnt = 0;
a1bb33af UH	295	libusb_get_device_list(usb_context, &devlist);
fed16f06 UH	296
fed16f06 UH	297	for (i = 0; devlist[i]; i++) {
a1bb33af	298	err = libusb_get_device_descriptor(devlist[i], &des);
fed16f06	299	if (err != 0) {
a1bb33af UH	300	g_warning("failed to get device descriptor: %d", err);
	301	continue;
	302	}
	303
fed16f06 UH	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 = sigrok_device_instance_new(devcnt,
	311	ST_INACTIVE, USB_VENDOR_NAME,
	312	USB_MODEL_NAME, USB_MODEL_VERSION);
	313	if (!sdi)
a1bb33af	314	return 0;
fed16f06 UH	315	device_instances =
	316	g_slist_append(device_instances, sdi);
	317	sdi->usb = usb_device_instance_new(
	318	libusb_get_bus_number(devlist[i]),
	319	libusb_get_device_address(devlist[i]), NULL);
a1bb33af UH	320	devcnt++;
	321	}
	322	}
	323	libusb_free_device_list(devlist, 1);
	324
	325	return devcnt;
	326	}
	327
a1bb33af UH	328	static int hw_opendev(int device_index)
	329	{
	330	struct sigrok_device_instance *sdi;
	331	int err;
	332
fed16f06	333	if (!(sdi = zp_open_device(device_index))) {
a1bb33af	334	g_warning("unable to open device");
e31b636d	335	return SIGROK_ERR;
a1bb33af UH	336	}
	337
	338	err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE);
fed16f06	339	if (err != 0) {
a1bb33af	340	g_warning("Unable to claim interface: %d", err);
e31b636d	341	return SIGROK_ERR;
a1bb33af UH	342	}
	343	analyzer_reset(sdi->usb->devhdl);
	344	analyzer_initialize(sdi->usb->devhdl);
	345	analyzer_configure(sdi->usb->devhdl);
	346
	347	analyzer_set_memory_size(MEMORY_SIZE_512K);
fed16f06	348	// analyzer_set_freq(g_freq, g_freq_scale);
a1bb33af	349	analyzer_set_trigger_count(1);
fed16f06 UH	350	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger) * get_memory_size(g_memory_size)) / 100) >> 2);
	351	analyzer_set_ramsize_trigger_address(
	352	(100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);
a1bb33af	353
fed16f06 UH	354	#if 0
fed16f06 UH	355	if (g_double_mode == 1)
a1bb33af UH	356	analyzer_set_compression(COMPRESSION_DOUBLE);
	357	else if (g_compression == 1)
	358	analyzer_set_compression(COMPRESSION_ENABLE);
fed16f06 UH	359	else
	360	#endif
	361	analyzer_set_compression(COMPRESSION_NONE);
a1bb33af	362
fed16f06 UH	363	if (cur_samplerate == 0) {
	364	/* Sample rate hasn't been set. Default to the slowest one. */
	365	if (hw_set_configuration(device_index, HWCAP_SAMPLERATE,
	366	&samplerates.low) == SIGROK_ERR)
e31b636d	367	return SIGROK_ERR;
a1bb33af UH	368	}
	369
	370	return SIGROK_OK;
	371	}
	372
a1bb33af UH	373	static void hw_closedev(int device_index)
	374	{
	375	struct sigrok_device_instance *sdi;
	376
fed16f06	377	if ((sdi = get_sigrok_device_instance(device_instances, device_index)))
a1bb33af	378	close_device(sdi);
a1bb33af UH	379	}
a1bb33af UH	380
a1bb33af UH	381	static void hw_cleanup(void)
	382	{
	383	GSList *l;
	384
fed16f06 UH	385	/* Properly close all devices. */
	386	for (l = device_instances; l; l = l->next)
	387	close_device((struct sigrok_device_instance *)l->data);
a1bb33af	388
fed16f06 UH	389	/* And free all their memory. */
fed16f06 UH	390	for (l = device_instances; l; l = l->next)
a1bb33af UH	391	g_free(l->data);
	392	g_slist_free(device_instances);
	393	device_instances = NULL;
	394
fed16f06	395	if (usb_context)
a1bb33af UH	396	libusb_exit(usb_context);
a1bb33af UH	397	usb_context = NULL;
a1bb33af UH	398	}
a1bb33af UH	399
a1bb33af UH	400	static void *hw_get_device_info(int device_index, int device_info_id)
	401	{
	402	struct sigrok_device_instance *sdi;
	403	void *info;
	404
fed16f06	405	if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
a1bb33af UH	406	return NULL;
	407
	408	info = NULL;
fed16f06	409	switch (device_info_id) {
a1bb33af UH	410	case DI_INSTANCE:
	411	info = sdi;
	412	break;
	413	case DI_NUM_PROBES:
	414	info = GINT_TO_POINTER(num_channels);
	415	break;
	416	case DI_SAMPLERATES:
	417	info = &samplerates;
	418	break;
	419	case DI_TRIGGER_TYPES:
	420	info = TRIGGER_TYPES;
	421	break;
4c100f32	422	case DI_CUR_SAMPLERATE:
a1bb33af UH	423	info = &cur_samplerate;
	424	break;
	425	}
	426
	427	return info;
	428	}
	429
a1bb33af UH	430	static int hw_get_status(int device_index)
	431	{
	432	struct sigrok_device_instance *sdi;
	433
	434	sdi = get_sigrok_device_instance(device_instances, device_index);
fed16f06	435	if (sdi)
a1bb33af UH	436	return sdi->status;
	437	else
	438	return ST_NOT_FOUND;
	439	}
	440
a1bb33af UH	441	static int *hw_get_capabilities(void)
a1bb33af UH	442	{
a1bb33af UH	443	return capabilities;
	444	}
	445
fed16f06	446	/* TODO: This will set the same samplerate for all devices. */
afc8e4de	447	static int set_configuration_samplerate(uint64_t samplerate)
a1bb33af UH	448	{
	449	g_message("%s(%llu)", __FUNCTION__, samplerate);
	450	if (samplerate > MHZ(1))
	451	analyzer_set_freq(samplerate / MHZ(1), FREQ_SCALE_MHZ);
	452	else if (samplerate > KHZ(1))
	453	analyzer_set_freq(samplerate / KHZ(1), FREQ_SCALE_KHZ);
	454	else
fed16f06	455	analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
a1bb33af UH	456
	457	cur_samplerate = samplerate;
	458
	459	return SIGROK_OK;
	460	}
	461
	462	static int hw_set_configuration(int device_index, int capability, void *value)
	463	{
	464	struct sigrok_device_instance *sdi;
	465	uint64_t *tmp_u64;
	466
fed16f06	467	if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
e31b636d	468	return SIGROK_ERR;
a1bb33af UH	469
a1bb33af UH	470	switch (capability) {
fed16f06 UH	471	case HWCAP_SAMPLERATE:
	472	tmp_u64 = value;
	473	return set_configuration_samplerate(*tmp_u64);
	474	case HWCAP_PROBECONFIG:
	475	return configure_probes((GSList *) value);
	476	case HWCAP_LIMIT_SAMPLES:
	477	limit_samples = strtoull(value, NULL, 10);
	478	return SIGROK_OK;
	479	default:
	480	return SIGROK_ERR;
a1bb33af UH	481	}
	482	}
	483
	484	static int hw_start_acquisition(int device_index, gpointer session_device_id)
	485	{
	486	struct sigrok_device_instance *sdi;
	487	struct datafeed_packet packet;
	488	struct datafeed_header header;
	489	int res;
afc8e4de	490	unsigned int packet_num;
a1bb33af UH	491	unsigned char *buf;
a1bb33af UH	492
fed16f06	493	if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
e31b636d	494	return SIGROK_ERR;
a1bb33af UH	495
	496	analyzer_start(sdi->usb->devhdl);
	497	g_message("Waiting for data");
	498	analyzer_wait_data(sdi->usb->devhdl);
	499
fed16f06 UH	500	g_message("Stop address = 0x%x",
	501	analyzer_get_stop_address(sdi->usb->devhdl));
	502	g_message("Now address = 0x%x",
	503	analyzer_get_now_address(sdi->usb->devhdl));
	504	g_message("Trigger address = 0x%x",
	505	analyzer_get_trigger_address(sdi->usb->devhdl));
a1bb33af UH	506
	507	packet.type = DF_HEADER;
	508	packet.length = sizeof(struct datafeed_header);
fed16f06	509	packet.payload = (unsigned char *)&header;
a1bb33af UH	510	header.feed_version = 1;
a1bb33af UH	511	gettimeofday(&header.starttime, NULL);
4c100f32	512	header.samplerate = cur_samplerate;
a1bb33af UH	513	header.protocol_id = PROTO_RAW;
	514	header.num_probes = num_channels;
	515	session_bus(session_device_id, &packet);
	516
	517	buf = g_malloc(PACKET_SIZE);
	518	if (!buf)
e31b636d	519	return SIGROK_ERR;
a1bb33af	520	analyzer_read_start(sdi->usb->devhdl);
fed16f06 UH	521	/* Send the incoming transfer to the session bus. */
	522	for (packet_num = 0; packet_num < (memory_size * 4 / PACKET_SIZE);
	523	packet_num++) {
a1bb33af	524	res = analyzer_read_data(sdi->usb->devhdl, buf, PACKET_SIZE);
fed16f06	525	// g_message("Tried to read %llx bytes, actually read %x bytes", PACKET_SIZE, res);
a1bb33af UH	526
	527	packet.type = DF_LOGIC32;
	528	packet.length = PACKET_SIZE;
	529	packet.payload = buf;
fed16f06	530	session_bus(session_device_id, &packet);
a1bb33af UH	531	}
	532	analyzer_read_stop(sdi->usb->devhdl);
	533	g_free(buf);
	534
	535	packet.type = DF_END;
	536	session_bus(session_device_id, &packet);
	537
	538	return SIGROK_OK;
	539	}
	540
fed16f06	541	/* This stops acquisition on ALL devices, ignoring device_index. */
a1bb33af UH	542	static void hw_stop_acquisition(int device_index, gpointer session_device_id)
	543	{
	544	struct datafeed_packet packet;
	545	struct sigrok_device_instance *sdi;
	546
	547	packet.type = DF_END;
	548	session_bus(session_device_id, &packet);
	549
fed16f06 UH	550	if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
fed16f06 UH	551	return; /* TODO: Cry? */
a1bb33af UH	552
a1bb33af UH	553	analyzer_reset(sdi->usb->devhdl);
fed16f06	554	/* TODO: Need to cancel and free any queued up transfers. */
a1bb33af UH	555	}
a1bb33af UH	556
a1bb33af UH	557	struct device_plugin zeroplus_logic_cube_plugin_info = {
	558	"zeroplus-logic-cube",
	559	1,
	560	hw_init,
	561	hw_cleanup,
a1bb33af UH	562	hw_opendev,
	563	hw_closedev,
	564	hw_get_device_info,
	565	hw_get_status,
	566	hw_get_capabilities,
	567	hw_set_configuration,
	568	hw_start_acquisition,
fed16f06	569	hw_stop_acquisition,
a1bb33af	570	};