SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di) { libusb_device **devlist; struct sr_usb_dev_inst *usb; struct libusb_device_descriptor des; struct dev_context *devc; struct drv_context *drvc; struct version_info vi; int ret, i, device_count; uint8_t revid; char connection_id[64]; drvc = di->context; devc = sdi->priv; usb = sdi->conn; if (sdi->status == SR_ST_ACTIVE) /* Device is already in use. */ return SR_ERR; device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); if (device_count < 0) { sr_err("Failed to get device list: %s.", libusb_error_name(device_count)); return SR_ERR; } for (i = 0; i < device_count; i++) { libusb_get_device_descriptor(devlist[i], &des); if (des.idVendor != devc->profile->vid || des.idProduct != devc->profile->pid) continue; if ((sdi->status == SR_ST_INITIALIZING) || (sdi->status == SR_ST_INACTIVE)) { /* * Check device by its physical USB bus/port address. */ usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); if (strcmp(sdi->connection_id, connection_id)) /* This is not the one. */ continue; } if (!(ret = libusb_open(devlist[i], &usb->devhdl))) { if (usb->address == 0xff) /* * First time we touch this device after FW * upload, so we don't know the address yet. */ usb->address = libusb_get_device_address(devlist[i]); } else { sr_err("Failed to open device: %s.", libusb_error_name(ret)); break; } if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) { 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; } } } ret = command_get_fw_version(usb->devhdl, &vi); if (ret != SR_OK) { sr_err("Failed to get firmware version."); break; } ret = command_get_revid_version(sdi, &revid); if (ret != SR_OK) { sr_err("Failed to get 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("Expected firmware version %d.x, " "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR, vi.major, vi.minor); break; } sdi->status = SR_ST_ACTIVE; sr_info("Opened device on %d.%d (logical) / %s (physical), " "interface %d, firmware %d.%d.", usb->bus, usb->address, connection_id, USB_INTERFACE, vi.major, vi.minor); sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.", revid, (revid != 1) ? " (FX2)" : "A (FX2LP)"); break; } libusb_free_device_list(devlist, 1); if (sdi->status != SR_ST_ACTIVE) return SR_ERR; return SR_OK; }
SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di) { libusb_device **devlist; struct sr_usb_dev_inst *usb; struct libusb_device_descriptor des; struct dev_context *devc; struct drv_context *drvc; struct version_info vi; int ret, skip, i, device_count; uint8_t revid; drvc = di->priv; devc = sdi->priv; usb = sdi->conn; if (sdi->status == SR_ST_ACTIVE) /* Device is already in use. */ return SR_ERR; skip = 0; device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); if (device_count < 0) { sr_err("Failed to get device list: %s.", libusb_error_name(device_count)); return SR_ERR; } for (i = 0; i < device_count; i++) { if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { sr_err("Failed to get device descriptor: %s.", libusb_error_name(ret)); continue; } if (des.idVendor != devc->profile->vid || des.idProduct != devc->profile->pid) continue; if (sdi->status == SR_ST_INITIALIZING) { if (skip != sdi->index) { /* Skip devices of this type that aren't the one we want. */ skip += 1; continue; } } else if (sdi->status == SR_ST_INACTIVE) { /* * 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]) != usb->bus || libusb_get_device_address(devlist[i]) != usb->address) /* This is not the one. */ continue; } if (!(ret = libusb_open(devlist[i], &usb->devhdl))) { if (usb->address == 0xff) /* * First time we touch this device after FW * upload, so we don't know the address yet. */ usb->address = libusb_get_device_address(devlist[i]); } else { sr_err("Failed to open device: %s.", libusb_error_name(ret)); break; } ret = command_get_fw_version(usb->devhdl, &vi); if (ret != SR_OK) { sr_err("Failed to get firmware version."); break; } ret = command_get_revid_version(usb->devhdl, &revid); if (ret != SR_OK) { sr_err("Failed to get 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("Expected firmware version %d.x, " "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR, vi.major, vi.minor); break; } sdi->status = SR_ST_ACTIVE; sr_info("Opened device %d on %d.%d, " "interface %d, firmware %d.%d.", sdi->index, usb->bus, usb->address, USB_INTERFACE, vi.major, vi.minor); sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.", revid, (revid != 1) ? " (FX2)" : "A (FX2LP)"); break; } libusb_free_device_list(devlist, 1); if (sdi->status != SR_ST_ACTIVE) return SR_ERR; return SR_OK; }