/*
* This file is part of the sigrok project.
*
+ * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
*
* This program is free software: you can redistribute it and/or modify
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <inttypes.h>
-#include <glib.h>
#include <libusb.h>
-#include "config.h"
-#include "sigrok.h"
-#include "sigrok-internal.h"
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
#include "fx2lafw.h"
+#include "command.h"
-static struct fx2lafw_profile supported_fx2[] = {
- /* USBee AX */
- { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, 8 },
- { 0, 0, 0, 0, 0, 0 }
+static const struct fx2lafw_profile supported_fx2[] = {
+ /*
+ * CWAV USBee AX
+ * EE Electronics ESLA201A
+ * ARMFLY AX-Pro
+ */
+ { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
+ FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
+ 0 },
+ /*
+ * CWAV USBee DX
+ * XZL-Studio DX
+ */
+ { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
+ FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
+ DEV_CAPS_16BIT },
+
+ /*
+ * CWAV USBee SX
+ */
+ { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
+ FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
+ 0 },
+
+ /*
+ * Saleae Logic
+ * EE Electronics ESLA100
+ * Robomotic MiniLogic
+ * Robomotic BugLogic 3
+ */
+ { 0x0925, 0x3881, "Saleae", "Logic", NULL,
+ FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
+ 0 },
+
+ /*
+ * Default Cypress FX2 without EEPROM, e.g.:
+ * Lcsoft Mini Board
+ * Braintechnology USB Interface V2.x
+ */
+ { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
+ FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
+ DEV_CAPS_16BIT },
+
+ /*
+ * Braintechnology USB-LPS
+ */
+ { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
+ FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
+ DEV_CAPS_16BIT },
+
+ { 0, 0, 0, 0, 0, 0, 0 }
};
-static int fx2lafw_capabilities[] = {
+static const int hwcaps[] = {
SR_HWCAP_LOGIC_ANALYZER,
SR_HWCAP_SAMPLERATE,
0,
};
-static const char *fx2lafw_probe_names[] = {
- "D0",
- "D1",
- "D2",
- "D3",
- "D4",
- "D5",
- "D6",
- "D7",
+static const char *probe_names[] = {
+ "0",
+ "1",
+ "2",
+ "3",
+ "4",
+ "5",
+ "6",
+ "7",
+ "8",
+ "9",
+ "10",
+ "11",
+ "12",
+ "13",
+ "14",
+ "15",
NULL,
};
-static uint64_t fx2lafw_supported_samplerates[] = {
+static const uint64_t supported_samplerates[] = {
+ SR_KHZ(20),
+ SR_KHZ(25),
+ SR_KHZ(50),
+ SR_KHZ(100),
+ SR_KHZ(200),
+ SR_KHZ(250),
+ SR_KHZ(500),
SR_MHZ(1),
SR_MHZ(2),
SR_MHZ(3),
SR_MHZ(12),
SR_MHZ(16),
SR_MHZ(24),
+ 0,
};
-static struct sr_samplerates fx2lafw_samplerates = {
- SR_MHZ(1),
- SR_MHZ(24),
- SR_HZ(0),
- fx2lafw_supported_samplerates,
+static const struct sr_samplerates samplerates = {
+ 0,
+ 0,
+ 0,
+ supported_samplerates,
};
-static GSList *dev_insts = NULL;
-static libusb_context *usb_context = NULL;
-
-static int hw_dev_acquisition_stop(int dev_index, void *session_dev_id);
+SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
+static struct sr_dev_driver *fdi = &fx2lafw_driver_info;
+static int hw_dev_close(struct sr_dev_inst *sdi);
+static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
+ const void *value);
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
/**
* Check the USB configuration to determine if this is an fx2lafw device.
static gboolean check_conf_profile(libusb_device *dev)
{
struct libusb_device_descriptor des;
- struct libusb_config_descriptor *conf_dsc = NULL;
- const struct libusb_interface_descriptor *intf_dsc;
- gboolean ret = FALSE;
+ struct libusb_device_handle *hdl;
+ gboolean ret;
+ unsigned char strdesc[64];
+ hdl = NULL;
+ ret = FALSE;
while (!ret) {
- /* Assume it's not a Saleae Logic unless proven wrong. */
- ret = 0;
-
+ /* Assume the FW has not been loaded, unless proven wrong. */
if (libusb_get_device_descriptor(dev, &des) != 0)
break;
- if (des.bNumConfigurations != 1)
- /* Need exactly 1 configuration. */
- break;
-
- if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
- break;
-
- if (conf_dsc->bNumInterfaces != 1)
- /* Need exactly 1 interface. */
+ if (libusb_open(dev, &hdl) != 0)
break;
- if (conf_dsc->interface[0].num_altsetting != 1)
- /* Need just one alternate setting. */
+ if (libusb_get_string_descriptor_ascii(hdl,
+ des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
break;
-
- intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
- if (intf_dsc->bNumEndpoints != 3)
- /* Need exactly 3 end points. */
+ if (strncmp((const char *)strdesc, "sigrok", 6))
break;
- if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
- (1 | LIBUSB_ENDPOINT_OUT))
- /* The first endpoint should be 1 (outbound). */
+ if (libusb_get_string_descriptor_ascii(hdl,
+ des.iProduct, strdesc, sizeof(strdesc)) < 0)
break;
-
- if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
- (2 | LIBUSB_ENDPOINT_IN))
- /* The second endpoint should be 2 (inbound). */
+ if (strncmp((const char *)strdesc, "fx2lafw", 7))
break;
- /* TODO: Check the debug channel... */
-
/* If we made it here, it must be an fx2lafw. */
ret = TRUE;
}
-
- if (conf_dsc)
- libusb_free_config_descriptor(conf_dsc);
+ if (hdl)
+ libusb_close(hdl);
return ret;
}
-static int fx2lafw_open_dev(int dev_index)
+static int fx2lafw_dev_open(struct sr_dev_inst *sdi)
{
libusb_device **devlist;
struct libusb_device_descriptor des;
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int err, skip, i;
+ struct dev_context *devc;
+ struct drv_context *drvc = fdi->priv;
+ struct version_info vi;
+ int ret, skip, i;
+ uint8_t revid;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
- ctx = sdi->priv;
+ devc = sdi->priv;
if (sdi->status == SR_ST_ACTIVE)
/* already in use */
return SR_ERR;
skip = 0;
- libusb_get_device_list(usb_context, &devlist);
- for (i = 0; devlist[i]; i++) {
- if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
- sr_err("fx2lafw: failed to get device descriptor: %d", err);
+ const int device_count = libusb_get_device_list(
+ drvc->sr_ctx->libusb_ctx, &devlist);
+ if (device_count < 0) {
+ sr_err("fx2lafw: Failed to retrieve device list (%d)",
+ device_count);
+ return SR_ERR;
+ }
+
+ for (i = 0; i < device_count; i++) {
+ if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
+ sr_err("fx2lafw: Failed to get device descriptor: %s.",
+ libusb_error_name(ret));
continue;
}
- if (des.idVendor != ctx->profile->vid
- || des.idProduct != ctx->profile->pid)
+ if (des.idVendor != devc->profile->vid
+ || des.idProduct != devc->profile->pid)
continue;
if (sdi->status == SR_ST_INITIALIZING) {
- if (skip != dev_index) {
+ if (skip != sdi->index) {
/* Skip devices of this type that aren't the one we want. */
skip += 1;
continue;
* This device is fully enumerated, so we need to find
* this device by vendor, product, bus and address.
*/
- if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus
- || libusb_get_device_address(devlist[i]) != ctx->usb->address)
+ if (libusb_get_bus_number(devlist[i]) != devc->usb->bus
+ || libusb_get_device_address(devlist[i]) != devc->usb->address)
/* this is not the one */
continue;
}
- if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) {
- if (ctx->usb->address == 0xff)
+ if (!(ret = libusb_open(devlist[i], &devc->usb->devhdl))) {
+ if (devc->usb->address == 0xff)
/*
* first time we touch this device after firmware upload,
* so we don't know the address yet.
*/
- ctx->usb->address = libusb_get_device_address(devlist[i]);
-
- sdi->status = SR_ST_ACTIVE;
- sr_info("fx2lafw: opened device %d on %d.%d interface %d",
- sdi->index, ctx->usb->bus,
- ctx->usb->address, USB_INTERFACE);
+ devc->usb->address = libusb_get_device_address(devlist[i]);
} else {
- sr_err("fx2lafw: failed to open device: %d", err);
+ sr_err("fx2lafw: Failed to open device: %s.",
+ libusb_error_name(ret));
+ break;
+ }
+
+ ret = command_get_fw_version(devc->usb->devhdl, &vi);
+ if (ret != SR_OK) {
+ sr_err("fx2lafw: Failed to retrieve "
+ "firmware version information.");
+ break;
+ }
+
+ ret = command_get_revid_version(devc->usb->devhdl, &revid);
+ if (ret != SR_OK) {
+ sr_err("fx2lafw: Failed to retrieve REVID.");
+ break;
+ }
+
+ /*
+ * Changes in major version mean incompatible/API changes, so
+ * bail out if we encounter an incompatible version.
+ * Different minor versions are OK, they should be compatible.
+ */
+ if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
+ sr_err("fx2lafw: Expected firmware version %d.x, "
+ "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
+ vi.major, vi.minor);
+ break;
}
- /* if we made it here, we handled the device one way or another */
+ sdi->status = SR_ST_ACTIVE;
+ sr_info("fx2lafw: Opened device %d on %d.%d "
+ "interface %d, firmware %d.%d, REVID %d.",
+ sdi->index, devc->usb->bus, devc->usb->address,
+ USB_INTERFACE, vi.major, vi.minor, revid);
+
break;
}
libusb_free_device_list(devlist, 1);
return SR_OK;
}
-static void close_dev(struct sr_dev_inst *sdi)
+static int configure_probes(const struct sr_dev_inst *sdi)
{
- struct context *ctx;
+ struct dev_context *devc;
+ struct sr_probe *probe;
+ GSList *l;
+ int probe_bit, stage, i;
+ char *tc;
- ctx = sdi->priv;
+ devc = sdi->priv;
+ for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
+ devc->trigger_mask[i] = 0;
+ devc->trigger_value[i] = 0;
+ }
- if (ctx->usb->devhdl == NULL)
- return;
+ stage = -1;
+ for (l = sdi->probes; l; l = l->next) {
+ probe = (struct sr_probe *)l->data;
+ if (probe->enabled == FALSE)
+ continue;
- sr_info("fx2lafw: closing device %d on %d.%d interface %d", sdi->index,
- ctx->usb->bus, ctx->usb->address, USB_INTERFACE);
- libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE);
- libusb_close(ctx->usb->devhdl);
- ctx->usb->devhdl = NULL;
- sdi->status = SR_ST_INACTIVE;
+ if (probe->index > 7)
+ devc->sample_wide = TRUE;
+
+ probe_bit = 1 << (probe->index);
+ if (!(probe->trigger))
+ continue;
+
+ stage = 0;
+ for (tc = probe->trigger; *tc; tc++) {
+ devc->trigger_mask[stage] |= probe_bit;
+ if (*tc == '1')
+ devc->trigger_value[stage] |= probe_bit;
+ stage++;
+ if (stage > NUM_TRIGGER_STAGES)
+ return SR_ERR;
+ }
+ }
+
+ if (stage == -1)
+ /*
+ * We didn't configure any triggers, make sure acquisition
+ * doesn't wait for any.
+ */
+ devc->trigger_stage = TRIGGER_FIRED;
+ else
+ devc->trigger_stage = 0;
+
+ return SR_OK;
}
-static struct context *fx2lafw_device_new(void)
+static struct dev_context *fx2lafw_dev_new(void)
{
- struct context *ctx;
+ struct dev_context *devc;
- if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
- sr_err("fx2lafw: %s: ctx malloc failed", __func__);
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+ sr_err("fx2lafw: %s: devc malloc failed.", __func__);
return NULL;
}
- return ctx;
+ devc->trigger_stage = TRIGGER_FIRED;
+
+ return devc;
+}
+
+static int clear_instances(void)
+{
+ GSList *l;
+ struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ int ret;
+
+ drvc = fdi->priv;
+ ret = SR_OK;
+ for (l = drvc->instances; l; l = l->next) {
+ if (!(sdi = l->data)) {
+ /* Log error, but continue cleaning up the rest. */
+ sr_err("fx2lafw: %s: sdi was NULL, continuing.",
+ __func__);
+ ret = SR_ERR_BUG;
+ continue;
+ }
+ if (!(devc = sdi->priv)) {
+ /* Log error, but continue cleaning up the rest. */
+ sr_err("fx2lafw: %s: sdi->priv was NULL, continuing",
+ __func__);
+ ret = SR_ERR_BUG;
+ continue;
+ }
+ hw_dev_close(sdi);
+ sr_usb_dev_inst_free(devc->usb);
+ sdi = l->data;
+ sr_dev_inst_free(sdi);
+ }
+
+ g_slist_free(drvc->instances);
+ drvc->instances = NULL;
+
+ return ret;
}
+
/*
* API callbacks
*/
-static int hw_init(const char *deviceinfo)
+static int hw_init(struct sr_context *sr_ctx)
{
- struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+
+ if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
+ sr_err("fx2lafw: driver context malloc failed.");
+ return SR_ERR_MALLOC;
+ }
+
+ drvc->sr_ctx = sr_ctx;
+ fdi->priv = drvc;
+
+ return SR_OK;
+}
+
+static GSList *hw_scan(GSList *options)
+{
+ GSList *devices;
struct libusb_device_descriptor des;
- struct fx2lafw_profile *fx2lafw_prof;
- struct context *ctx;
+ struct sr_dev_inst *sdi;
+ const struct fx2lafw_profile *prof;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ struct sr_probe *probe;
libusb_device **devlist;
- int err;
- int devcnt = 0;
- int i, j;
+ int devcnt, num_logic_probes, ret, i, j;
- /* Avoid compiler warnings. */
- (void)deviceinfo;
+ (void)options;
- if (libusb_init(&usb_context) != 0) {
- sr_warn("Failed to initialize USB.");
- return 0;
- }
+ drvc = fdi->priv;
+
+ /* This scan always invalidates any previous scans. */
+ clear_instances();
- /* Find all fx2lafw compatible devices and upload firware to all of them. */
- libusb_get_device_list(usb_context, &devlist);
+ /* Find all fx2lafw compatible devices and upload firmware to them. */
+ devices = NULL;
+ libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
for (i = 0; devlist[i]; i++) {
- if ((err = libusb_get_device_descriptor(
- devlist[i], &des)) != 0) {
- sr_warn("failed to get device descriptor: %d", err);
+ if ((ret = libusb_get_device_descriptor(
+ devlist[i], &des)) != 0) {
+ sr_warn("fx2lafw: Failed to get device descriptor: %s.",
+ libusb_error_name(ret));
continue;
}
- fx2lafw_prof = NULL;
+ prof = NULL;
for (j = 0; supported_fx2[j].vid; j++) {
if (des.idVendor == supported_fx2[j].vid &&
des.idProduct == supported_fx2[j].pid) {
- fx2lafw_prof = &supported_fx2[j];
+ prof = &supported_fx2[j];
}
}
/* Skip if the device was not found */
- if(!fx2lafw_prof)
+ if (!prof)
continue;
+ devcnt = g_slist_length(drvc->instances);
sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
- fx2lafw_prof->vendor, fx2lafw_prof->model,
- fx2lafw_prof->model_version);
- if(!sdi)
- return 0;
+ prof->vendor, prof->model, prof->model_version);
+ if (!sdi)
+ return NULL;
+ sdi->driver = fdi;
+
+ /* Fill in probelist according to this device's profile. */
+ num_logic_probes = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
+ for (j = 0; j < num_logic_probes; j++) {
+ if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
+ probe_names[j])))
+ return NULL;
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ }
- ctx = fx2lafw_device_new();
- ctx->profile = fx2lafw_prof;
- sdi->priv = ctx;
- dev_insts = g_slist_append(dev_insts, sdi);
+ devc = fx2lafw_dev_new();
+ devc->profile = prof;
+ sdi->priv = devc;
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
if (check_conf_profile(devlist[i])) {
/* Already has the firmware, so fix the new address. */
- sr_dbg("fx2lafw: Found a fx2lafw device.");
+ sr_dbg("fx2lafw: Found an fx2lafw device.");
sdi->status = SR_ST_INACTIVE;
- ctx->usb = sr_usb_dev_inst_new
+ devc->usb = sr_usb_dev_inst_new
(libusb_get_bus_number(devlist[i]),
libusb_get_device_address(devlist[i]), NULL);
} else {
- if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, FIRMWARE) == SR_OK)
+ if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
+ prof->firmware) == SR_OK)
/* Remember when the firmware on this device was updated */
- g_get_current_time(&ctx->fw_updated);
+ devc->fw_updated = g_get_monotonic_time();
else
- sr_err("fx2lafw: firmware upload failed for "
- "device %d", devcnt);
- ctx->usb = sr_usb_dev_inst_new
+ sr_err("fx2lafw: Firmware upload failed for "
+ "device %d.", devcnt);
+ devc->usb = sr_usb_dev_inst_new
(libusb_get_bus_number(devlist[i]), 0xff, NULL);
}
-
- devcnt++;
}
libusb_free_device_list(devlist, 1);
- return devcnt;
+ return devices;
}
-static int hw_dev_open(int dev_index)
+static GSList *hw_dev_list(void)
{
- GTimeVal cur_time;
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int timediff, err;
+ struct drv_context *drvc;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
- ctx = sdi->priv;
+ drvc = fdi->priv;
+
+ return drvc->instances;
+}
+
+static int hw_dev_open(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ int ret;
+ int64_t timediff_us, timediff_ms;
+
+ devc = sdi->priv;
/*
- * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY ms
- * for the FX2 to renumerate
+ * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
+ * milliseconds for the FX2 to renumerate.
*/
- err = 0;
- if (GTV_TO_MSEC(ctx->fw_updated) > 0) {
- sr_info("fx2lafw: waiting for device to reset");
+ ret = SR_ERR;
+ if (devc->fw_updated > 0) {
+ sr_info("fx2lafw: Waiting for device to reset.");
/* takes at least 300ms for the FX2 to be gone from the USB bus */
g_usleep(300 * 1000);
- timediff = 0;
- while (timediff < MAX_RENUM_DELAY) {
- if ((err = fx2lafw_open_dev(dev_index)) == SR_OK)
+ timediff_ms = 0;
+ while (timediff_ms < MAX_RENUM_DELAY_MS) {
+ if ((ret = fx2lafw_dev_open(sdi)) == SR_OK)
break;
g_usleep(100 * 1000);
- g_get_current_time(&cur_time);
- timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated);
+
+ timediff_us = g_get_monotonic_time() - devc->fw_updated;
+ timediff_ms = timediff_us / 1000;
+ sr_spew("fx2lafw: waited %" PRIi64 " ms", timediff_ms);
}
- sr_info("fx2lafw: device came back after %d ms", timediff);
+ sr_info("fx2lafw: Device came back after %d ms.", timediff_ms);
} else {
- err = fx2lafw_open_dev(dev_index);
+ ret = fx2lafw_dev_open(sdi);
}
- if (err != SR_OK) {
- sr_err("fx2lafw: unable to open device");
+ if (ret != SR_OK) {
+ sr_err("fx2lafw: Unable to open device.");
return SR_ERR;
}
- ctx = sdi->priv;
+ devc = sdi->priv;
+
+ ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
+ if (ret != 0) {
+ switch(ret) {
+ case LIBUSB_ERROR_BUSY:
+ sr_err("fx2lafw: Unable to claim USB interface. Another "
+ "program or driver has already claimed it.");
+ break;
+
+ case LIBUSB_ERROR_NO_DEVICE:
+ sr_err("fx2lafw: Device has been disconnected.");
+ break;
+
+ default:
+ sr_err("fx2lafw: Unable to claim interface: %s.",
+ libusb_error_name(ret));
+ break;
+ }
- err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
- if (err != 0) {
- sr_err("fx2lafw: Unable to claim interface: %d", err);
return SR_ERR;
}
+ if (devc->cur_samplerate == 0) {
+ /* Samplerate hasn't been set; default to the slowest one. */
+ if (hw_dev_config_set(sdi, SR_HWCAP_SAMPLERATE,
+ &supported_samplerates[0]) == SR_ERR)
+ return SR_ERR;
+ }
+
return SR_OK;
}
-static int hw_dev_close(int dev_index)
+static int hw_dev_close(struct sr_dev_inst *sdi)
{
- struct sr_dev_inst *sdi;
+ struct dev_context *devc;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("fx2lafw: %s: sdi was NULL", __func__);
- return SR_ERR_BUG;
- }
+ devc = sdi->priv;
+ if (devc->usb->devhdl == NULL)
+ return SR_ERR;
- /* TODO */
- close_dev(sdi);
+ sr_info("fx2lafw: Closing device %d on %d.%d interface %d.",
+ sdi->index, devc->usb->bus, devc->usb->address, USB_INTERFACE);
+ libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
+ libusb_close(devc->usb->devhdl);
+ devc->usb->devhdl = NULL;
+ sdi->status = SR_ST_INACTIVE;
return SR_OK;
}
static int hw_cleanup(void)
{
- GSList *l;
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int ret = SR_OK;
+ struct drv_context *drvc;
+ int ret;
- for(l = dev_insts; l; l = l->next) {
- if (!(sdi = l->data)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("fx2lafw: %s: sdi was NULL, continuing", __func__);
- ret = SR_ERR_BUG;
- continue;
- }
- if (!(ctx = sdi->priv)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("fx2lafw: %s: sdi->priv was NULL, continuing",
- __func__);
- ret = SR_ERR_BUG;
- continue;
- }
- close_dev(sdi);
- sdi = l->data;
- sr_dev_inst_free(sdi);
- }
+ if (!(drvc = fdi->priv))
+ return SR_OK;
- g_slist_free(dev_insts);
- dev_insts = NULL;
+ ret = clear_instances();
- if(usb_context)
- libusb_exit(usb_context);
- usb_context = NULL;
+ g_free(drvc);
+ fdi->priv = NULL;
return ret;
}
-static void *hw_dev_info_get(int dev_index, int dev_info_id)
+static int hw_info_get(int info_id, const void **data,
+ const struct sr_dev_inst *sdi)
{
- struct sr_dev_inst *sdi;
- struct context *ctx;
+ struct dev_context *devc;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return NULL;
- ctx = sdi->priv;
-
- switch (dev_info_id) {
- case SR_DI_INST:
- return sdi;
+ switch (info_id) {
+ case SR_DI_HWCAPS:
+ *data = hwcaps;
+ break;
case SR_DI_NUM_PROBES:
- return GINT_TO_POINTER(ctx->profile->num_probes);
+ if (sdi) {
+ devc = sdi->priv;
+ *data = GINT_TO_POINTER(
+ (devc->profile->dev_caps & DEV_CAPS_16BIT) ?
+ 16 : 8);
+ } else
+ return SR_ERR;
+ break;
case SR_DI_PROBE_NAMES:
- return fx2lafw_probe_names;
+ *data = probe_names;
+ break;
case SR_DI_SAMPLERATES:
- return &fx2lafw_samplerates;
+ *data = &samplerates;
+ break;
case SR_DI_TRIGGER_TYPES:
- return TRIGGER_TYPES;
+ *data = TRIGGER_TYPES;
+ break;
case SR_DI_CUR_SAMPLERATE:
- return &ctx->cur_samplerate;
+ if (sdi) {
+ devc = sdi->priv;
+ *data = &devc->cur_samplerate;
+ } else
+ return SR_ERR;
+ break;
+ default:
+ return SR_ERR_ARG;
}
- return NULL;
-}
-
-static int hw_dev_status_get(int dev_index)
-{
- const struct sr_dev_inst *const sdi =
- sr_dev_inst_get(dev_insts, dev_index);
-
- if (!sdi)
- return SR_ST_NOT_FOUND;
-
- return sdi->status;
-}
-
-static int *hw_hwcap_get_all(void)
-{
- return fx2lafw_capabilities;
+ return SR_OK;
}
-static int hw_dev_config_set(int dev_index, int hwcap, void *value)
+static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
+ const void *value)
{
- struct sr_dev_inst *sdi;
- struct context *ctx;
+ struct dev_context *devc;
int ret;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
- return SR_ERR;
- ctx = sdi->priv;
+ devc = sdi->priv;
if (hwcap == SR_HWCAP_SAMPLERATE) {
- ctx->cur_samplerate = *(uint64_t *)value;
- ret = SR_OK;
- } else if (hwcap == SR_HWCAP_PROBECONFIG) {
+ devc->cur_samplerate = *(const uint64_t *)value;
ret = SR_OK;
} else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) {
- ctx->limit_samples = *(uint64_t *)value;
+ devc->limit_samples = *(const uint64_t *)value;
ret = SR_OK;
} else {
ret = SR_ERR;
static int receive_data(int fd, int revents, void *cb_data)
{
struct timeval tv;
+ struct drv_context *drvc = fdi->priv;
- /* Avoid compiler warnings. */
(void)fd;
(void)revents;
(void)cb_data;
tv.tv_sec = tv.tv_usec = 0;
- libusb_handle_events_timeout(usb_context, &tv);
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
return TRUE;
}
+static void abort_acquisition(struct dev_context *devc)
+{
+ int i;
+
+ devc->num_samples = -1;
+
+ for (i = devc->num_transfers - 1; i >= 0; i--) {
+ if (devc->transfers[i])
+ libusb_cancel_transfer(devc->transfers[i]);
+ }
+}
+
+static void finish_acquisition(struct dev_context *devc)
+{
+ struct sr_datafeed_packet packet;
+ struct drv_context *drvc = fdi->priv;
+ int i;
+
+
+ /* Terminate session */
+ packet.type = SR_DF_END;
+ sr_session_send(devc->session_dev_id, &packet);
+
+ /* Remove fds from polling */
+ const struct libusb_pollfd **const lupfd =
+ libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
+ for (i = 0; lupfd[i]; i++)
+ sr_source_remove(lupfd[i]->fd);
+ free(lupfd); /* NOT g_free()! */
+
+ devc->num_transfers = 0;
+ g_free(devc->transfers);
+}
+
+static void free_transfer(struct libusb_transfer *transfer)
+{
+ struct dev_context *devc = transfer->user_data;
+ unsigned int i;
+
+ g_free(transfer->buffer);
+ transfer->buffer = NULL;
+ libusb_free_transfer(transfer);
+
+ for (i = 0; i < devc->num_transfers; i++) {
+ if (devc->transfers[i] == transfer) {
+ devc->transfers[i] = NULL;
+ break;
+ }
+ }
+
+ devc->submitted_transfers--;
+ if (devc->submitted_transfers == 0)
+ finish_acquisition(devc);
+
+}
+
+static void resubmit_transfer(struct libusb_transfer *transfer)
+{
+ int ret = libusb_submit_transfer(transfer);
+
+ if (LIBUSB_SUCCESS == ret)
+ return;
+
+ free_transfer(transfer);
+ /* TODO: Stop session? */
+
+ sr_err("fx2lafw: %s: %s", __func__, libusb_error_name(ret));
+}
+
static void receive_transfer(struct libusb_transfer *transfer)
{
- /* TODO: These statics have to move to the ctx struct. */
- static int num_samples = 0;
- static int empty_transfer_count = 0;
+ gboolean packet_has_error = FALSE;
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
- struct context *ctx;
- int cur_buflen;
- unsigned char *cur_buf, *new_buf;
-
- /* hw_dev_acquisition_stop() is telling us to stop. */
- if (transfer == NULL)
- num_samples = -1;
+ struct dev_context *devc = transfer->user_data;
+ int trigger_offset, i;
/*
* If acquisition has already ended, just free any queued up
* transfer that come in.
*/
- if (num_samples == -1) {
- if (transfer)
- libusb_free_transfer(transfer);
+ if (devc->num_samples == -1) {
+ free_transfer(transfer);
return;
}
- sr_info("fx2lafw: receive_transfer(): status %d received %d bytes",
+ sr_info("fx2lafw: receive_transfer(): status %d received %d bytes.",
transfer->status, transfer->actual_length);
/* Save incoming transfer before reusing the transfer struct. */
- cur_buf = transfer->buffer;
- cur_buflen = transfer->actual_length;
- ctx = transfer->user_data;
-
- /* Fire off a new request. */
- if (!(new_buf = g_try_malloc(4096))) {
- sr_err("fx2lafw: %s: new_buf malloc failed", __func__);
- return; /* TODO: SR_ERR_MALLOC */
- }
-
- transfer->buffer = new_buf;
- transfer->length = 4096;
- if (libusb_submit_transfer(transfer) != 0) {
- /* TODO: Stop session? */
- /* TODO: Better error message. */
- sr_err("fx2lafw: %s: libusb_submit_transfer error", __func__);
+ uint8_t *const cur_buf = transfer->buffer;
+ const int sample_width = devc->sample_wide ? 2 : 1;
+ const int cur_sample_count = transfer->actual_length / sample_width;
+
+ switch (transfer->status) {
+ case LIBUSB_TRANSFER_NO_DEVICE:
+ abort_acquisition(devc);
+ free_transfer(transfer);
+ return;
+ case LIBUSB_TRANSFER_COMPLETED:
+ case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
+ break;
+ default:
+ packet_has_error = TRUE;
+ break;
}
- if (cur_buflen == 0) {
- empty_transfer_count++;
- if (empty_transfer_count > MAX_EMPTY_TRANSFERS) {
+ if (transfer->actual_length == 0 || packet_has_error) {
+ devc->empty_transfer_count++;
+ if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
/*
* The FX2 gave up. End the acquisition, the frontend
* will work out that the samplecount is short.
*/
- hw_dev_acquisition_stop(-1, ctx->session_dev_id);
+ abort_acquisition(devc);
+ free_transfer(transfer);
+ } else {
+ resubmit_transfer(transfer);
}
return;
} else {
- empty_transfer_count = 0;
+ devc->empty_transfer_count = 0;
+ }
+
+ trigger_offset = 0;
+ if (devc->trigger_stage >= 0) {
+ for (i = 0; i < cur_sample_count; i++) {
+
+ const uint16_t cur_sample = devc->sample_wide ?
+ *((const uint16_t*)cur_buf + i) :
+ *((const uint8_t*)cur_buf + i);
+
+ if ((cur_sample & devc->trigger_mask[devc->trigger_stage]) ==
+ devc->trigger_value[devc->trigger_stage]) {
+ /* Match on this trigger stage. */
+ devc->trigger_buffer[devc->trigger_stage] = cur_sample;
+ devc->trigger_stage++;
+
+ if (devc->trigger_stage == NUM_TRIGGER_STAGES ||
+ devc->trigger_mask[devc->trigger_stage] == 0) {
+ /* Match on all trigger stages, we're done. */
+ trigger_offset = i + 1;
+
+ /*
+ * TODO: Send pre-trigger buffer to session bus.
+ * Tell the frontend we hit the trigger here.
+ */
+ packet.type = SR_DF_TRIGGER;
+ packet.payload = NULL;
+ sr_session_send(devc->session_dev_id, &packet);
+
+ /*
+ * Send the samples that triggered it, since we're
+ * skipping past them.
+ */
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.unitsize = sizeof(*devc->trigger_buffer);
+ logic.length = devc->trigger_stage * logic.unitsize;
+ logic.data = devc->trigger_buffer;
+ sr_session_send(devc->session_dev_id, &packet);
+
+ devc->trigger_stage = TRIGGER_FIRED;
+ break;
+ }
+ } else if (devc->trigger_stage > 0) {
+ /*
+ * We had a match before, but not in the next sample. However, we may
+ * have a match on this stage in the next bit -- trigger on 0001 will
+ * fail on seeing 00001, so we need to go back to stage 0 -- but at
+ * the next sample from the one that matched originally, which the
+ * counter increment at the end of the loop takes care of.
+ */
+ i -= devc->trigger_stage;
+ if (i < -1)
+ i = -1; /* Oops, went back past this buffer. */
+ /* Reset trigger stage. */
+ devc->trigger_stage = 0;
+ }
+ }
}
- /* Send the incoming transfer to the session bus. */
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = cur_buflen;
- logic.unitsize = 1;
- logic.data = cur_buf;
- sr_session_send(ctx->session_dev_id, &packet);
- g_free(cur_buf);
-
- num_samples += cur_buflen;
- if (ctx->limit_samples &&
- (unsigned int) num_samples > ctx->limit_samples) {
- hw_dev_acquisition_stop(-1, ctx->session_dev_id);
+ if (devc->trigger_stage == TRIGGER_FIRED) {
+ /* Send the incoming transfer to the session bus. */
+ const int trigger_offset_bytes = trigger_offset * sample_width;
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = transfer->actual_length - trigger_offset_bytes;
+ logic.unitsize = sample_width;
+ logic.data = cur_buf + trigger_offset_bytes;
+ sr_session_send(devc->session_dev_id, &packet);
+
+ devc->num_samples += cur_sample_count;
+ if (devc->limit_samples &&
+ (unsigned int)devc->num_samples > devc->limit_samples) {
+ abort_acquisition(devc);
+ free_transfer(transfer);
+ return;
+ }
+ } else {
+ /*
+ * TODO: Buffer pre-trigger data in capture
+ * ratio-sized buffer.
+ */
}
+
+ resubmit_transfer(transfer);
}
-static int hw_dev_acquisition_start(int dev_index, void *cb_data)
+static unsigned int to_bytes_per_ms(unsigned int samplerate)
{
- struct sr_dev_inst *sdi;
- struct sr_datafeed_packet *packet;
- struct sr_datafeed_header *header;
- struct context *ctx;
+ return samplerate / 1000;
+}
+
+static size_t get_buffer_size(struct dev_context *devc)
+{
+ size_t s;
+
+ /* The buffer should be large enough to hold 10ms of data and a multiple
+ * of 512. */
+ s = 10 * to_bytes_per_ms(devc->cur_samplerate);
+ return (s + 511) & ~511;
+}
+
+static unsigned int get_number_of_transfers(struct dev_context *devc)
+{
+ unsigned int n;
+
+ /* Total buffer size should be able to hold about 500ms of data */
+ n = 500 * to_bytes_per_ms(devc->cur_samplerate) / get_buffer_size(devc);
+
+ if (n > NUM_SIMUL_TRANSFERS)
+ return NUM_SIMUL_TRANSFERS;
+
+ return n;
+}
+
+static unsigned int get_timeout(struct dev_context *devc)
+{
+ size_t total_size;
+ unsigned int timeout;
+
+ total_size = get_buffer_size(devc) * get_number_of_transfers(devc);
+ timeout = total_size / to_bytes_per_ms(devc->cur_samplerate);
+ return timeout + timeout / 4; /* Leave a headroom of 25% percent */
+}
+
+static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
+ void *cb_data)
+{
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_header header;
+ struct sr_datafeed_meta_logic meta;
+ struct dev_context *devc;
+ struct drv_context *drvc = fdi->priv;
struct libusb_transfer *transfer;
const struct libusb_pollfd **lupfd;
- int size, i;
+ unsigned int i;
+ int ret;
unsigned char *buf;
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+ devc = sdi->priv;
+ if (devc->submitted_transfers != 0)
return SR_ERR;
- ctx = sdi->priv;
- ctx->session_dev_id = cb_data;
- if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
- sr_err("fx2lafw: %s: packet malloc failed", __func__);
- return SR_ERR_MALLOC;
+ if (configure_probes(sdi) != SR_OK) {
+ sr_err("fx2lafw: failed to configured probes");
+ return SR_ERR;
}
- if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
- sr_err("fx2lafw: %s: header malloc failed", __func__);
+ devc->session_dev_id = cb_data;
+ devc->num_samples = 0;
+ devc->empty_transfer_count = 0;
+
+ const unsigned int timeout = get_timeout(devc);
+ const unsigned int num_transfers = get_number_of_transfers(devc);
+ const size_t size = get_buffer_size(devc);
+
+ devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
+ if (!devc->transfers) {
+ sr_err("fx2lafw: USB transfers malloc failed.");
return SR_ERR_MALLOC;
}
- /* Start with 2K transfer, subsequently increased to 4K. */
- size = 2048;
- for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) {
+ devc->num_transfers = num_transfers;
+
+ for (i = 0; i < num_transfers; i++) {
if (!(buf = g_try_malloc(size))) {
- sr_err("fx2lafw: %s: buf malloc failed", __func__);
+ sr_err("fx2lafw: %s: buf malloc failed.", __func__);
return SR_ERR_MALLOC;
}
transfer = libusb_alloc_transfer(0);
- libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl,
+ libusb_fill_bulk_transfer(transfer, devc->usb->devhdl,
2 | LIBUSB_ENDPOINT_IN, buf, size,
- receive_transfer, ctx, 40);
- if (libusb_submit_transfer(transfer) != 0) {
- /* TODO: Free them all. */
+ receive_transfer, devc, timeout);
+ if ((ret = libusb_submit_transfer(transfer)) != 0) {
+ sr_err("fx2lafw: %s: libusb_submit_transfer: %s.",
+ __func__, libusb_error_name(ret));
libusb_free_transfer(transfer);
g_free(buf);
+ abort_acquisition(devc);
return SR_ERR;
}
- size = 4096;
+ devc->transfers[i] = transfer;
+ devc->submitted_transfers++;
}
- lupfd = libusb_get_pollfds(usb_context);
+ lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
for (i = 0; lupfd[i]; i++)
sr_source_add(lupfd[i]->fd, lupfd[i]->events,
- 40, receive_data, NULL);
+ timeout, receive_data, NULL);
free(lupfd); /* NOT g_free()! */
- packet->type = SR_DF_HEADER;
- packet->payload = header;
- header->feed_version = 1;
- gettimeofday(&header->starttime, NULL);
- header->samplerate = ctx->cur_samplerate;
- header->num_logic_probes = ctx->profile->num_probes;
- sr_session_send(cb_data, packet);
- g_free(header);
- g_free(packet);
+ packet.type = SR_DF_HEADER;
+ packet.payload = &header;
+ header.feed_version = 1;
+ gettimeofday(&header.starttime, NULL);
+ sr_session_send(cb_data, &packet);
+
+ /* Send metadata about the SR_DF_LOGIC packets to come. */
+ packet.type = SR_DF_META_LOGIC;
+ packet.payload = &meta;
+ meta.samplerate = devc->cur_samplerate;
+ meta.num_probes = devc->sample_wide ? 16 : 8;
+ sr_session_send(cb_data, &packet);
+
+ if ((ret = command_start_acquisition (devc->usb->devhdl,
+ devc->cur_samplerate, devc->sample_wide)) != SR_OK) {
+ abort_acquisition(devc);
+ return ret;
+ }
return SR_OK;
}
/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
-static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
- struct sr_datafeed_packet packet;
-
- /* Avoid compiler warnings. */
- (void)dev_index;
-
- packet.type = SR_DF_END;
- sr_session_send(cb_data, &packet);
-
- receive_transfer(NULL);
+ (void)cb_data;
- /* TODO: Need to cancel and free any queued up transfers. */
+ abort_acquisition(sdi->priv);
return SR_OK;
}
SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
.name = "fx2lafw",
- .longname = "fx2lafw",
+ .longname = "fx2lafw (generic driver for FX2 based LAs)",
.api_version = 1,
.init = hw_init,
.cleanup = hw_cleanup,
+ .scan = hw_scan,
+ .dev_list = hw_dev_list,
+ .dev_clear = clear_instances,
.dev_open = hw_dev_open,
.dev_close = hw_dev_close,
- .dev_info_get = hw_dev_info_get,
- .dev_status_get = hw_dev_status_get,
- .hwcap_get_all = hw_hwcap_get_all,
+ .info_get = hw_info_get,
.dev_config_set = hw_dev_config_set,
.dev_acquisition_start = hw_dev_acquisition_start,
.dev_acquisition_stop = hw_dev_acquisition_stop,
+ .priv = NULL,
};
projects / libsigrok.git / blobdiff