From: Marcus Comstedt Date: Fri, 2 Aug 2013 19:02:00 +0000 (+0200) Subject: saleae-logic16: Reworked scan/open to handle FW upload. X-Git-Tag: libsigrok-0.2.2~90 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=5eea4305ad108b8549257170985688004e65d00b;p=libsigrok.git saleae-logic16: Reworked scan/open to handle FW upload. The new code is based on code from the fx2lafw driver. --- diff --git a/hardware/saleae-logic16/Makefile.am b/hardware/saleae-logic16/Makefile.am index 67cf6cd4..bc509032 100644 --- a/hardware/saleae-logic16/Makefile.am +++ b/hardware/saleae-logic16/Makefile.am @@ -19,6 +19,8 @@ if HW_SALEAE_LOGIC16 +AM_CPPFLAGS = -DFIRMWARE_DIR='"$(FIRMWARE_DIR)"' + # Local lib, this is NOT meant to be installed! noinst_LTLIBRARIES = libsigrok_hw_saleae_logic16.la diff --git a/hardware/saleae-logic16/api.c b/hardware/saleae-logic16/api.c index 5f0fd1c0..2878b16a 100644 --- a/hardware/saleae-logic16/api.c +++ b/hardware/saleae-logic16/api.c @@ -29,6 +29,13 @@ #define LOGIC16_PID 0x1001 #define NUM_PROBES 16 +#define USB_INTERFACE 0 +#define USB_CONFIGURATION 1 +#define FX2_FIRMWARE FIRMWARE_DIR "/saleae-logic16-fx2.fw" + +#define MAX_RENUM_DELAY_MS 3000 + + SR_PRIV struct sr_dev_driver saleae_logic16_driver_info; static struct sr_dev_driver *di = &saleae_logic16_driver_info; @@ -43,27 +50,95 @@ static int init(struct sr_context *sr_ctx) return std_init(sr_ctx, di, LOG_PREFIX); } +static gboolean check_conf_profile(libusb_device *dev) +{ + struct libusb_device_descriptor des; + struct libusb_device_handle *hdl; + gboolean ret; + unsigned char strdesc[64]; + + hdl = NULL; + ret = FALSE; + while (!ret) { + /* Assume the FW has not been loaded, unless proven wrong. */ + if (libusb_get_device_descriptor(dev, &des) != 0) + break; + + if (libusb_open(dev, &hdl) != 0) + break; + + if (libusb_get_string_descriptor_ascii(hdl, + des.iManufacturer, strdesc, sizeof(strdesc)) < 0) + break; + if (strcmp((const char *)strdesc, "Saleae LLC")) + break; + + if (libusb_get_string_descriptor_ascii(hdl, + des.iProduct, strdesc, sizeof(strdesc)) < 0) + break; + if (strcmp((const char *)strdesc, "Logic S/16")) + break; + + /* If we made it here, it must be a configured Logic16. */ + ret = TRUE; + } + if (hdl) + libusb_close(hdl); + + return ret; +} + 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; + GSList *l, *devices, *conn_devices; struct libusb_device_descriptor des; libusb_device **devlist; - GSList *devices; - int ret, devcnt, i, j; - - (void)options; + int devcnt, 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 Logic16 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 ((ret = libusb_get_device_descriptor(devlist[i], &des)) != 0) { - sr_warn("Failed to get device descriptor: %s", - libusb_error_name(ret)); + 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; } @@ -71,15 +146,12 @@ static GSList *scan(GSList *options) continue; devcnt = g_slist_length(drvc->instances); - if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE, - "Saleae", "Logic16", NULL))) + sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING, + "Saleae", "Logic16", NULL); + if (!sdi) return NULL; sdi->driver = di; - if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) - return NULL; - sdi->priv = devc; - for (j = 0; probe_names[j]; j++) { if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE, probe_names[j]))) @@ -87,15 +159,34 @@ static GSList *scan(GSList *options) sdi->probes = g_slist_append(sdi->probes, probe); } - if (!(sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), - libusb_get_device_address(devlist[i]), NULL))) + if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) return NULL; - sdi->inst_type = SR_INST_USB; - + 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("Found a Logic16 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, + FX2_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; } @@ -114,23 +205,172 @@ static int dev_clear(void) return std_dev_clear(di, NULL); } +static int logic16_dev_open(struct sr_dev_inst *sdi) +{ + libusb_device **devlist; + struct sr_usb_dev_inst *usb; + struct libusb_device_descriptor des; + struct dev_context *devc; + struct drv_context *drvc; + int ret, skip, i, device_count; + + 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 != LOGIC16_VID + || des.idProduct != LOGIC16_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; + } + + sdi->status = SR_ST_ACTIVE; + sr_info("Opened device %d on %d.%d, " + "interface %d.", + sdi->index, usb->bus, usb->address, + USB_INTERFACE); + + break; + } + libusb_free_device_list(devlist, 1); + + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR; + + return SR_OK; +} + static int dev_open(struct sr_dev_inst *sdi) { - (void)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 = logic16_dev_open(sdi)) == 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 = logic16_dev_open(sdi); + } + + 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; + } - /* TODO: get handle from sdi->conn and open it. */ + return SR_ERR; + } - sdi->status = SR_ST_ACTIVE; + if (devc->cur_samplerate == 0) { + /* Samplerate hasn't been set; default to the slowest one. */ + devc->cur_samplerate = 500000; + } return SR_OK; } static int dev_close(struct sr_dev_inst *sdi) { - (void)sdi; + struct sr_usb_dev_inst *usb; - /* TODO: get handle from sdi->conn and close it. */ + usb = sdi->conn; + if (usb->devhdl == NULL) + return SR_ERR; + sr_info("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; diff --git a/hardware/saleae-logic16/protocol.h b/hardware/saleae-logic16/protocol.h index 0551712f..a13f1858 100644 --- a/hardware/saleae-logic16/protocol.h +++ b/hardware/saleae-logic16/protocol.h @@ -36,6 +36,14 @@ /** Private, per-device-instance driver context. */ struct dev_context { + /* + * Since we can't keep track of a Logic16 device after upgrading + * the firmware (it renumerates into a different device address + * after the upgrade) this is like a global lock. No device will open + * until a proper delay after the last device was upgraded. + */ + int64_t fw_updated; + /** The currently configured samplerate of the device. */ uint64_t cur_samplerate; };