static int dev_open(struct sr_dev_inst *sdi)
{
struct sr_dev_driver *di = sdi->driver;
struct drv_context *drvc = di->context;
struct sr_usb_dev_inst *usb;
int ret;
usb = sdi->conn;
if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
return SR_ERR;
if ((ret = libusb_set_configuration(usb->devhdl, 1))) {
sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
return SR_ERR;
}
if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
return SR_ERR;
}
sdi->status = SR_ST_ACTIVE;
return ret;
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct drv_context *drvc;
struct sr_usb_dev_inst *usb;
int ret;
drvc = di->priv;
if (!drvc) {
sr_err("Driver was not initialized.");
return SR_ERR;
}
usb = sdi->conn;
ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
if (ret != SR_OK)
return ret;
ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
if (ret < 0) {
sr_err("Failed to claim interface: %s.",
libusb_error_name(ret));
return SR_ERR;
}
sdi->status = SR_ST_INITIALIZING;
ret = lwla_init_device(sdi);
if (ret == SR_OK)
sdi->status = SR_ST_ACTIVE;
return ret;
}
static int hw_dev_open(struct sr_dev_inst *sdi)
{
struct drv_context *drvc;
struct dev_context *devc;
drvc = di->priv;
devc = sdi->priv;
return sr_usb_open(drvc->sr_ctx->libusb_ctx, devc->usb);
}
static int dev_open(struct sr_dev_inst *sdi, int dmm)
{
struct drv_context *drvc;
struct sr_usb_dev_inst *usb;
int ret;
drvc = udmms[dmm].di->priv;
usb = sdi->conn;
if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK)
sdi->status = SR_ST_ACTIVE;
return ret;
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct sr_dev_driver *di;
struct drv_context *drvc;
struct sr_usb_dev_inst *usb;
int ret;
di = sdi->driver;
drvc = di->context;
usb = sdi->conn;
if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK)
sdi->status = SR_ST_ACTIVE;
return ret;
}
static int scan_kecheng(struct sr_dev_driver *di,
struct sr_usb_dev_inst *usb, char **model)
{
struct drv_context *drvc;
int len, ret;
unsigned char cmd, buf[32];
drvc = di->context;
if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
return SR_ERR;
cmd = CMD_IDENTIFY;
ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5);
if (ret != 0) {
libusb_close(usb->devhdl);
sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret));
return SR_ERR;
}
ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10);
if (ret != 0) {
libusb_close(usb->devhdl);
sr_dbg("Failed to receive response: %s", libusb_error_name(ret));
return SR_ERR;
}
libusb_close(usb->devhdl);
usb->devhdl = NULL;
if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) {
sr_dbg("Invalid response to Identify command");
return SR_ERR;
}
buf[buf[1] + 2] = '\x0';
*model = g_strndup((const gchar *)buf + 2, 30);
return SR_OK;
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct sr_dev_driver *di = sdi->driver;
struct drv_context *drvc = di->context;
struct sr_usb_dev_inst *usb;
int ret;
usb = sdi->conn;
if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
return SR_ERR;
/*
* The libusb 1.0.9 Darwin backend is broken: it can report a kernel
* driver being active, but detaching it always returns an error.
*/
#if !defined(__APPLE__)
if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
sr_err("failed to detach kernel driver: %s",
libusb_error_name(ret));
return SR_ERR;
}
}
#endif
if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
return SR_ERR;
}
if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
return SR_ERR;
}
sdi->status = SR_ST_ACTIVE;
return ret;
}
static int scpi_usbtmc_libusb_open(void *priv)
{
struct scpi_usbtmc_libusb *uscpi = priv;
struct sr_usb_dev_inst *usb = uscpi->usb;
struct libusb_device *dev;
struct libusb_device_descriptor des;
struct libusb_config_descriptor *confdes;
const struct libusb_interface_descriptor *intfdes;
const struct libusb_endpoint_descriptor *ep;
int confidx, intfidx, epidx, config = 0;
uint8_t capabilities[24];
int ret, found = 0;
if (usb->devhdl)
return SR_OK;
if (sr_usb_open(uscpi->ctx->libusb_ctx, usb) != SR_OK)
return SR_ERR;
dev = libusb_get_device(usb->devhdl);
if ((ret = libusb_get_device_descriptor(dev, &des))) {
sr_err("Failed to get device descriptor: %s.",
libusb_error_name(ret));
return SR_ERR;
}
for (confidx = 0; confidx < des.bNumConfigurations; confidx++) {
if (libusb_get_config_descriptor(dev, confidx, &confdes) != 0) {
sr_err("Failed to get configuration descriptor: %s.",
libusb_error_name(ret));
continue;
}
for (intfidx = 0; intfidx < confdes->bNumInterfaces; intfidx++) {
intfdes = confdes->interface[intfidx].altsetting;
if (intfdes->bInterfaceClass != LIBUSB_CLASS_APPLICATION ||
intfdes->bInterfaceSubClass != SUBCLASS_USBTMC ||
intfdes->bInterfaceProtocol != USBTMC_USB488)
continue;
uscpi->interface = intfdes->bInterfaceNumber;
sr_dbg("Interface %d", uscpi->interface);
config = confdes->bConfigurationValue;
sr_dbg("Configuration %d", config);
for (epidx = 0; epidx < intfdes->bNumEndpoints; epidx++) {
ep = &intfdes->endpoint[epidx];
if (ep->bmAttributes == LIBUSB_TRANSFER_TYPE_BULK &&
!(ep->bEndpointAddress & (LIBUSB_ENDPOINT_DIR_MASK))) {
uscpi->bulk_out_ep = ep->bEndpointAddress;
sr_dbg("Bulk OUT EP %d", uscpi->bulk_out_ep);
}
if (ep->bmAttributes == LIBUSB_TRANSFER_TYPE_BULK &&
ep->bEndpointAddress & (LIBUSB_ENDPOINT_DIR_MASK)) {
uscpi->bulk_in_ep = ep->bEndpointAddress;
sr_dbg("Bulk IN EP %d", uscpi->bulk_in_ep);
}
if (ep->bmAttributes == LIBUSB_TRANSFER_TYPE_INTERRUPT &&
ep->bEndpointAddress & (LIBUSB_ENDPOINT_DIR_MASK)) {
uscpi->interrupt_ep = ep->bEndpointAddress;
sr_dbg("Interrupt EP %d", uscpi->interrupt_ep);
}
}
found = 1;
}
libusb_free_config_descriptor(confdes);
if (found)
break;
}
if (!found) {
sr_err("Failed to find USBTMC interface.");
return SR_ERR;
}
if (libusb_kernel_driver_active(usb->devhdl, uscpi->interface) == 1) {
if ((ret = libusb_detach_kernel_driver(usb->devhdl,
uscpi->interface)) < 0) {
sr_err("Failed to detach kernel driver: %s.",
libusb_error_name(ret));
return SR_ERR;
}
uscpi->detached_kernel_driver = 1;
}
if ((ret = libusb_set_configuration(usb->devhdl, config))) {
sr_err("Failed to set configuration: %s.",
libusb_error_name(ret));
return SR_ERR;
}
if ((ret = libusb_claim_interface(usb->devhdl, uscpi->interface))) {
sr_err("Failed to claim interface: %s.",
libusb_error_name(ret));
return SR_ERR;
}
if ((ret = libusb_clear_halt(usb->devhdl, uscpi->bulk_in_ep)) < 0) {
sr_err("Failed to clear halt/stall condition for EP %d: %s.",
uscpi->bulk_in_ep, libusb_error_name(ret));
return SR_ERR;
}
if ((ret = libusb_clear_halt(usb->devhdl, uscpi->bulk_out_ep)) < 0) {
sr_err("Failed to clear halt/stall condition for EP %d: %s.",
uscpi->bulk_out_ep, libusb_error_name(ret));
return SR_ERR;
}
if ((ret = libusb_clear_halt(usb->devhdl, uscpi->interrupt_ep)) < 0) {
sr_err("Failed to clear halt/stall condition for EP %d: %s.",
uscpi->interrupt_ep, libusb_error_name(ret));
return SR_ERR;
}
/* Get capabilities. */
ret = libusb_control_transfer(usb->devhdl,
LIBUSB_ENDPOINT_IN |
LIBUSB_REQUEST_TYPE_CLASS |
LIBUSB_RECIPIENT_INTERFACE,
GET_CAPABILITIES, 0,
uscpi->interface,
capabilities, sizeof(capabilities),
TRANSFER_TIMEOUT);
if (ret == sizeof(capabilities)) {
uscpi->usbtmc_int_cap = capabilities[ 4];
uscpi->usbtmc_dev_cap = capabilities[ 5];
uscpi->usb488_dev_cap = capabilities[15];
}
sr_dbg("Device capabilities: %s%s%s%s%s, %s, %s",
uscpi->usb488_dev_cap & USB488_DEV_CAP_SCPI ? "SCPI, " : "",
uscpi->usbtmc_dev_cap & USBTMC_DEV_CAP_TERMCHAR ? "TermChar, ": "",
uscpi->usbtmc_int_cap & USBTMC_INT_CAP_LISTEN_ONLY? "L3, " :
uscpi->usbtmc_int_cap & USBTMC_INT_CAP_TALK_ONLY ? "" : "L4, ",
uscpi->usbtmc_int_cap & USBTMC_INT_CAP_TALK_ONLY ? "T5, " :
uscpi->usbtmc_int_cap & USBTMC_INT_CAP_LISTEN_ONLY? "" : "T6, ",
uscpi->usb488_dev_cap & USB488_DEV_CAP_SR1 ? "SR1" : "SR0",
uscpi->usb488_dev_cap & USB488_DEV_CAP_RL1 ? "RL1" : "RL0",
uscpi->usb488_dev_cap & USB488_DEV_CAP_DT1 ? "DT1" : "DT0");
return SR_OK;
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct drv_context *drvc;
struct dev_context *devc;
struct sr_usb_dev_inst *usb;
uint8_t buffer[PACKET_LENGTH];
int ret;
if (!(drvc = di->priv)) {
sr_err("Driver was not initialized.");
return SR_ERR;
}
usb = sdi->conn;
devc = sdi->priv;
if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
return SR_ERR;
/*
* Determine if a kernel driver is active on this interface and, if so,
* detach it.
*/
if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE);
if (ret < 0) {
sr_err("Failed to detach kernel driver: %s.",
libusb_error_name(ret));
return SR_ERR;
}
}
if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE)) < 0) {
sr_err("Failed to claim interface: %s.",
libusb_error_name(ret));
return SR_ERR;
}
libusb_fill_control_transfer(devc->xfer_in, usb->devhdl,
devc->xfer_buf_in, sl2_receive_transfer_in,
sdi, USB_TIMEOUT);
libusb_fill_control_transfer(devc->xfer_out, usb->devhdl,
devc->xfer_buf_out, sl2_receive_transfer_out,
sdi, USB_TIMEOUT);
memset(buffer, 0, sizeof(buffer));
buffer[0] = CMD_RESET;
if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
sr_err("Device reset failed: %s.", libusb_error_name(ret));
return SR_ERR;
}
/*
* Set the device to idle state. If the device is not in idle state it
* possibly will reset itself after a few seconds without being used
* and thereby close the connection.
*/
buffer[0] = CMD_IDLE;
if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
sr_err("Failed to set device in idle state: %s.",
libusb_error_name(ret));
return SR_ERR;
}
sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
static GSList *hw_scan(GSList *options)
{
struct drv_context *drvc;
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_usb_dev_inst *usb;
struct sr_config *src;
struct sr_probe *probe;
libusb_device *dev;
GSList *usb_devices, *devices, *l;
int i;
const char *conn;
(void)options;
drvc = di->priv;
/* USB scan is always authoritative. */
clear_instances();
conn = NULL;
for (l = options; l; l = l->next) {
src = l->data;
switch (src->key) {
case SR_CONF_CONN:
conn = src->value;
break;
}
}
if (!conn)
conn = OSCI_VIDPID;
devices = NULL;
if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
for (l = usb_devices; l; l = l->next) {
usb = l->data;
if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
OSCI_VENDOR, OSCI_MODEL, OSCI_VERSION)))
return NULL;
sdi->driver = di;
for (i = 0; probe_names[i]; i++) {
if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
probe_names[i])))
return NULL;
sdi->probes = g_slist_append(sdi->probes, probe);
}
if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
return NULL;
sdi->priv = devc;
devc->usb = usb;
if (strcmp(conn, OSCI_VIDPID)) {
if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
break;
dev = libusb_get_device(usb->devhdl);
if (ezusb_upload_firmware(dev, 0, OSCI_FIRMWARE) == SR_OK)
/* Remember when the firmware on this device was updated */
devc->fw_updated = g_get_monotonic_time();
else
sr_err("Firmware upload failed for device "
"at bus %d address %d.", usb->bus, usb->address);
}
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
}
g_slist_free(usb_devices);
} else
g_slist_free_full(usb_devices, g_free);
return devices;
}
SR_PRIV int sl2_get_device_info(struct sr_usb_dev_inst usb,
struct device_info *dev_info)
{
struct drv_context *drvc;
uint8_t buffer[PACKET_LENGTH];
int ret;
drvc = di->priv;
if (!dev_info)
return SR_ERR_ARG;
if (sr_usb_open(drvc->sr_ctx->libusb_ctx, &usb) != SR_OK)
return SR_ERR;
/*
* Determine if a kernel driver is active on this interface and, if so,
* detach it.
*/
if (libusb_kernel_driver_active(usb.devhdl, USB_INTERFACE) == 1) {
ret = libusb_detach_kernel_driver(usb.devhdl,
USB_INTERFACE);
if (ret < 0) {
sr_err("Failed to detach kernel driver: %s.",
libusb_error_name(ret));
libusb_close(usb.devhdl);
return SR_ERR;
}
}
ret = libusb_claim_interface(usb.devhdl, USB_INTERFACE);
if (ret) {
sr_err("Failed to claim interface: %s.",
libusb_error_name(ret));
libusb_close(usb.devhdl);
return SR_ERR;
}
memset(buffer, 0, sizeof(buffer));
/*
* Reset the device to ensure it is in a proper state to request the
* device information.
*/
buffer[0] = CMD_RESET;
if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) {
sr_err("Resetting of device failed: %s.",
libusb_error_name(ret));
libusb_release_interface(usb.devhdl, USB_INTERFACE);
libusb_close(usb.devhdl);
return SR_ERR;
}
buffer[0] = CMD_INFO;
if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) {
sr_err("Requesting of device information failed: %s.",
libusb_error_name(ret));
libusb_release_interface(usb.devhdl, USB_INTERFACE);
libusb_close(usb.devhdl);
return SR_ERR;
}
if ((ret = sl2_transfer_in(usb.devhdl, buffer)) != PACKET_LENGTH) {
sr_err("Receiving of device information failed: %s.",
libusb_error_name(ret));
libusb_release_interface(usb.devhdl, USB_INTERFACE);
libusb_close(usb.devhdl);
return SR_ERR;
}
memcpy(&(dev_info->serial), buffer + 1, sizeof(uint32_t));
dev_info->serial = GUINT32_FROM_LE(dev_info->serial);
dev_info->fw_ver_major = buffer[5];
dev_info->fw_ver_minor = buffer[6];
buffer[0] = CMD_RESET;
if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) {
sr_err("Device reset failed: %s.", libusb_error_name(ret));
libusb_release_interface(usb.devhdl, USB_INTERFACE);
libusb_close(usb.devhdl);
return SR_ERR;
}
/*
* Set the device to idle state. If the device is not in idle state it
* possibly will reset itself after a few seconds without being used
* and thereby close the connection.
*/
buffer[0] = CMD_IDLE;
if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) {
sr_err("Failed to set device in idle state: %s.",
libusb_error_name(ret));
libusb_release_interface(usb.devhdl, USB_INTERFACE);
libusb_close(usb.devhdl);
return SR_ERR;
}
ret = libusb_release_interface(usb.devhdl, USB_INTERFACE);
if (ret < 0) {
sr_err("Failed to release interface: %s.",
libusb_error_name(ret));
libusb_close(usb.devhdl);
return SR_ERR;
}
libusb_close(usb.devhdl);
return SR_OK;
}
