libsigrok/hardware/fx2lafw/api.c

565 lines
13 KiB
C

/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 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
* 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 "protocol.h"
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 const int32_t hwopts[] = {
SR_CONF_CONN,
};
static const int32_t hwcaps[] = {
SR_CONF_LOGIC_ANALYZER,
SR_CONF_TRIGGER_TYPE,
SR_CONF_SAMPLERATE,
/* These are really implemented in the driver, not the hardware. */
SR_CONF_LIMIT_SAMPLES,
SR_CONF_CONTINUOUS,
};
static const char *probe_names[] = {
"0", "1", "2", "3", "4", "5", "6", "7",
"8", "9", "10", "11", "12", "13", "14", "15",
NULL,
};
static const uint64_t 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(4),
SR_MHZ(6),
SR_MHZ(8),
SR_MHZ(12),
SR_MHZ(16),
SR_MHZ(24),
};
SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
static struct sr_dev_driver *di = &fx2lafw_driver_info;
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
static GSList *scan(GSList *options)
{
struct drv_context *drvc;
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_usb_dev_inst *usb;
struct sr_probe *probe;
struct sr_config *src;
const struct fx2lafw_profile *prof;
GSList *l, *devices, *conn_devices;
struct libusb_device_descriptor des;
libusb_device **devlist;
int devcnt, num_logic_probes, ret, i, j;
const char *conn;
drvc = di->priv;
conn = NULL;
for (l = options; l; l = l->next) {
src = l->data;
switch (src->key) {
case SR_CONF_CONN:
conn = g_variant_get_string(src->data, NULL);
break;
}
}
if (conn)
conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
else
conn_devices = NULL;
/* 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 (conn) {
usb = NULL;
for (l = conn_devices; l; l = l->next) {
usb = l->data;
if (usb->bus == libusb_get_bus_number(devlist[i])
&& usb->address == libusb_get_device_address(devlist[i]))
break;
}
if (!l)
/* This device matched none of the ones that
* matched the conn specification. */
continue;
}
if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
sr_warn("Failed to get device descriptor: %s.",
libusb_error_name(ret));
continue;
}
prof = NULL;
for (j = 0; supported_fx2[j].vid; j++) {
if (des.idVendor == supported_fx2[j].vid &&
des.idProduct == supported_fx2[j].pid) {
prof = &supported_fx2[j];
}
}
/* Skip if the device was not found. */
if (!prof)
continue;
devcnt = g_slist_length(drvc->instances);
sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
prof->vendor, prof->model, prof->model_version);
if (!sdi)
return NULL;
sdi->driver = di;
/* 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);
}
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 (fx2lafw_check_conf_profile(devlist[i])) {
/* Already has the firmware, so fix the new address. */
sr_dbg("Found an fx2lafw device.");
sdi->status = SR_ST_INACTIVE;
sdi->inst_type = SR_INST_USB;
sdi->conn = 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,
prof->firmware) == SR_OK)
/* Store when this device's FW was updated. */
devc->fw_updated = g_get_monotonic_time();
else
sr_err("Firmware upload failed for "
"device %d.", devcnt);
sdi->inst_type = SR_INST_USB;
sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
0xff, NULL);
}
}
libusb_free_device_list(devlist, 1);
g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
return devices;
}
static GSList *dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct sr_usb_dev_inst *usb;
struct dev_context *devc;
int ret;
int64_t timediff_us, timediff_ms;
devc = sdi->priv;
usb = sdi->conn;
/*
* If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
* milliseconds for the FX2 to renumerate.
*/
ret = SR_ERR;
if (devc->fw_updated > 0) {
sr_info("Waiting for device to reset.");
/* Takes >= 300ms for the FX2 to be gone from the USB bus. */
g_usleep(300 * 1000);
timediff_ms = 0;
while (timediff_ms < MAX_RENUM_DELAY_MS) {
if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
break;
g_usleep(100 * 1000);
timediff_us = g_get_monotonic_time() - devc->fw_updated;
timediff_ms = timediff_us / 1000;
sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
}
if (ret != SR_OK) {
sr_err("Device failed to renumerate.");
return SR_ERR;
}
sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
} else {
sr_info("Firmware upload was not needed.");
ret = fx2lafw_dev_open(sdi, di);
}
if (ret != SR_OK) {
sr_err("Unable to open device.");
return SR_ERR;
}
ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
if (ret != 0) {
switch (ret) {
case LIBUSB_ERROR_BUSY:
sr_err("Unable to claim USB interface. Another "
"program or driver has already claimed it.");
break;
case LIBUSB_ERROR_NO_DEVICE:
sr_err("Device has been disconnected.");
break;
default:
sr_err("Unable to claim interface: %s.",
libusb_error_name(ret));
break;
}
return SR_ERR;
}
if (devc->cur_samplerate == 0) {
/* Samplerate hasn't been set; default to the slowest one. */
devc->cur_samplerate = samplerates[0];
}
return SR_OK;
}
static int dev_close(struct sr_dev_inst *sdi)
{
struct sr_usb_dev_inst *usb;
usb = sdi->conn;
if (usb->devhdl == NULL)
return SR_ERR;
sr_info("fx2lafw: Closing device %d on %d.%d interface %d.",
sdi->index, usb->bus, usb->address, USB_INTERFACE);
libusb_release_interface(usb->devhdl, USB_INTERFACE);
libusb_close(usb->devhdl);
usb->devhdl = NULL;
sdi->status = SR_ST_INACTIVE;
return SR_OK;
}
static int cleanup(void)
{
int ret;
struct drv_context *drvc;
if (!(drvc = di->priv))
return SR_OK;
ret = std_dev_clear(di, NULL);
g_free(drvc);
di->priv = NULL;
return ret;
}
static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
struct dev_context *devc;
struct sr_usb_dev_inst *usb;
char str[128];
(void)probe_group;
switch (id) {
case SR_CONF_CONN:
if (!sdi || !sdi->conn)
return SR_ERR_ARG;
usb = sdi->conn;
if (usb->address == 255)
/* Device still needs to re-enumerate after firmware
* upload, so we don't know its (future) address. */
return SR_ERR;
snprintf(str, 128, "%d.%d", usb->bus, usb->address);
*data = g_variant_new_string(str);
break;
case SR_CONF_SAMPLERATE:
if (!sdi)
return SR_ERR;
devc = sdi->priv;
*data = g_variant_new_uint64(devc->cur_samplerate);
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
struct dev_context *devc;
int ret;
(void)probe_group;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
devc = sdi->priv;
if (id == SR_CONF_SAMPLERATE) {
devc->cur_samplerate = g_variant_get_uint64(data);
ret = SR_OK;
} else if (id == SR_CONF_LIMIT_SAMPLES) {
devc->limit_samples = g_variant_get_uint64(data);
ret = SR_OK;
} else {
ret = SR_ERR_NA;
}
return ret;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
GVariant *gvar;
GVariantBuilder gvb;
(void)sdi;
(void)probe_group;
switch (key) {
case SR_CONF_SCAN_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
break;
case SR_CONF_DEVICE_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
break;
case SR_CONF_SAMPLERATE:
g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
ARRAY_SIZE(samplerates), sizeof(uint64_t));
g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
*data = g_variant_builder_end(&gvb);
break;
case SR_CONF_TRIGGER_TYPE:
*data = g_variant_new_string(TRIGGER_TYPE);
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int receive_data(int fd, int revents, void *cb_data)
{
struct timeval tv;
struct drv_context *drvc;
(void)fd;
(void)revents;
(void)cb_data;
drvc = di->priv;
tv.tv_sec = tv.tv_usec = 0;
libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
return TRUE;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
struct dev_context *devc;
struct drv_context *drvc;
struct sr_usb_dev_inst *usb;
struct libusb_transfer *transfer;
unsigned int i, timeout, num_transfers;
int ret;
unsigned char *buf;
size_t size;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
drvc = di->priv;
devc = sdi->priv;
usb = sdi->conn;
/* Configures devc->trigger_* and devc->sample_wide */
if (fx2lafw_configure_probes(sdi) != SR_OK) {
sr_err("Failed to configure probes.");
return SR_ERR;
}
devc->cb_data = cb_data;
devc->num_samples = 0;
devc->empty_transfer_count = 0;
timeout = fx2lafw_get_timeout(devc);
num_transfers = fx2lafw_get_number_of_transfers(devc);
size = fx2lafw_get_buffer_size(devc);
devc->submitted_transfers = 0;
devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
if (!devc->transfers) {
sr_err("USB transfers malloc failed.");
return SR_ERR_MALLOC;
}
devc->num_transfers = num_transfers;
for (i = 0; i < num_transfers; i++) {
if (!(buf = g_try_malloc(size))) {
sr_err("USB transfer buffer malloc failed.");
return SR_ERR_MALLOC;
}
transfer = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer(transfer, usb->devhdl,
2 | LIBUSB_ENDPOINT_IN, buf, size,
fx2lafw_receive_transfer, devc, timeout);
if ((ret = libusb_submit_transfer(transfer)) != 0) {
sr_err("Failed to submit transfer: %s.",
libusb_error_name(ret));
libusb_free_transfer(transfer);
g_free(buf);
fx2lafw_abort_acquisition(devc);
return SR_ERR;
}
devc->transfers[i] = transfer;
devc->submitted_transfers++;
}
devc->ctx = drvc->sr_ctx;
usb_source_add(devc->ctx, timeout, receive_data, NULL);
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
if ((ret = fx2lafw_command_start_acquisition(usb->devhdl,
devc->cur_samplerate, devc->sample_wide)) != SR_OK) {
fx2lafw_abort_acquisition(devc);
return ret;
}
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
(void)cb_data;
fx2lafw_abort_acquisition(sdi->priv);
return SR_OK;
}
SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
.name = "fx2lafw",
.longname = "fx2lafw (generic driver for FX2 based LAs)",
.api_version = 1,
.init = init,
.cleanup = cleanup,
.scan = scan,
.dev_list = dev_list,
.dev_clear = NULL,
.config_get = config_get,
.config_set = config_set,
.config_list = config_list,
.dev_open = dev_open,
.dev_close = dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};