X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Ffx2lafw%2Ffx2lafw.c;h=d0834dedb870dcfb169456c4dce30c0a6cd7a79e;hb=0abee5076fd7751bd77d0fee940d617a1a40ea34;hp=357a34a1429d67e834dc2b1a336fc55f847a89ef;hpb=187b358232aa90de8ee12df915506f839a98f2ad;p=libsigrok.git diff --git a/hardware/fx2lafw/fx2lafw.c b/hardware/fx2lafw/fx2lafw.c index 357a34a1..d0834ded 100644 --- a/hardware/fx2lafw/fx2lafw.c +++ b/hardware/fx2lafw/fx2lafw.c @@ -19,9 +19,9 @@ #include #include +#include #include #include - #include "config.h" #include "sigrok.h" #include "sigrok-internal.h" @@ -33,19 +33,213 @@ static struct fx2lafw_profile supported_fx2[] = { { 0, 0, 0, 0, 0, 0 } }; -static GSList *device_instances = NULL; +static int fx2lafw_capabilities[] = { + SR_HWCAP_LOGIC_ANALYZER, + SR_HWCAP_SAMPLERATE, + + /* These are really implemented in the driver, not the hardware. */ + SR_HWCAP_LIMIT_SAMPLES, + SR_HWCAP_CONTINUOUS, + 0, +}; + +static const char *fx2lafw_probe_names[] = { + "D0", + "D1", + "D2", + "D3", + "D4", + "D5", + "D6", + "D7", + NULL, +}; + +static uint64_t fx2lafw_supported_samplerates[] = { + 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), +}; + +static struct sr_samplerates fx2lafw_samplerates = { + SR_MHZ(1), + SR_MHZ(24), + SR_HZ(0), + fx2lafw_supported_samplerates, +}; + +static GSList *dev_insts = NULL; static libusb_context *usb_context = NULL; -static struct fx2lafw_device* fx2lafw_device_new(void) +static int hw_dev_acquisition_stop(int dev_index, void *session_dev_id); + +/** + * Check the USB configuration to determine if this is an fx2lafw device. + * + * @return TRUE if the device's configuration profile match fx2lafw + * configuration, FALSE otherwise. + */ +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; + + while (!ret) { + /* Assume it's not a Saleae Logic unless proven wrong. */ + ret = 0; + + 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. */ + break; + + if (conf_dsc->interface[0].num_altsetting != 1) + /* Need just one alternate setting. */ + break; + + intf_dsc = &(conf_dsc->interface[0].altsetting[0]); + if (intf_dsc->bNumEndpoints != 3) + /* Need exactly 3 end points. */ + break; + + if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != + (1 | LIBUSB_ENDPOINT_OUT)) + /* The first endpoint should be 1 (outbound). */ + break; + + if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != + (2 | LIBUSB_ENDPOINT_IN)) + /* The second endpoint should be 2 (inbound). */ + 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); + + return ret; +} + +static int fx2lafw_open_dev(int dev_index) +{ + libusb_device **devlist; + struct libusb_device_descriptor des; + struct sr_dev_inst *sdi; + struct context *ctx; + int err, skip, i; + + if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) + return SR_ERR; + ctx = 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); + continue; + } + + if (des.idVendor != FIRMWARE_VID + || des.idProduct != FIRMWARE_PID) + continue; + + if (sdi->status == SR_ST_INITIALIZING) { + if (skip != dev_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]) != ctx->usb->bus + || libusb_get_device_address(devlist[i]) != ctx->usb->address) + /* this is not the one */ + continue; + } + + if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) { + if (ctx->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); + } else { + sr_err("fx2lafw: failed to open device: %d", err); + } + + /* if we made it here, we handled the device one way or another */ + break; + } + libusb_free_device_list(devlist, 1); + + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR; + + return SR_OK; +} + +static void close_dev(struct sr_dev_inst *sdi) { - struct fx2lafw_device *fx2lafw; + struct context *ctx; + + ctx = sdi->priv; - if (!(fx2lafw = g_try_malloc0(sizeof(struct fx2lafw_device)))) { - sr_err("fx2lafw: %s: fx2lafw_device malloc failed", __func__); + if (ctx->usb->devhdl == NULL) + return; + + 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; +} + +static struct context *fx2lafw_device_new(void) +{ + struct context *ctx; + + if (!(ctx = g_try_malloc0(sizeof(struct context)))) { + sr_err("fx2lafw: %s: ctx malloc failed", __func__); return NULL; } - return fx2lafw; + return ctx; } /* @@ -57,7 +251,7 @@ static int hw_init(const char *deviceinfo) struct sr_dev_inst *sdi; struct libusb_device_descriptor des; struct fx2lafw_profile *fx2lafw_prof; - struct fx2lafw_device *fx2lafw_dev; + struct context *ctx; libusb_device **devlist; int err; int devcnt = 0; @@ -99,10 +293,28 @@ static int hw_init(const char *deviceinfo) if(!sdi) return 0; - fx2lafw_dev = fx2lafw_device_new(); - fx2lafw_dev->profile = fx2lafw_prof; - sdi->priv = fx2lafw_dev; - device_instances = g_slist_append(device_instances, sdi); + ctx = fx2lafw_device_new(); + ctx->profile = fx2lafw_prof; + sdi->priv = ctx; + dev_insts = g_slist_append(dev_insts, sdi); + + if (check_conf_profile(devlist[i])) { + /* Already has the firmware, so fix the new address. */ + sr_dbg("fx2lafw: Found a fx2lafw device."); + sdi->status = SR_ST_INACTIVE; + ctx->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) + /* Remember when the firmware on this device was updated */ + g_get_current_time(&ctx->fw_updated); + else + sr_err("fx2lafw: firmware upload failed for " + "device %d", devcnt); + ctx->usb = sr_usb_dev_inst_new + (libusb_get_bus_number(devlist[i]), 0xff, NULL); + } devcnt++; } @@ -111,15 +323,66 @@ static int hw_init(const char *deviceinfo) return devcnt; } -static int hw_dev_open(int device_index) +static int hw_dev_open(int dev_index) { - (void)device_index; + GTimeVal cur_time; + struct sr_dev_inst *sdi; + struct context *ctx; + int timediff, err; + + if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) + return SR_ERR; + ctx = sdi->priv; + + /* + * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY ms + * for the FX2 to renumerate + */ + err = 0; + if (GTV_TO_MSEC(ctx->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) + break; + g_usleep(100 * 1000); + g_get_current_time(&cur_time); + timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated); + } + sr_info("fx2lafw: device came back after %d ms", timediff); + } else { + err = fx2lafw_open_dev(dev_index); + } + + if (err != SR_OK) { + sr_err("fx2lafw: unable to open device"); + return SR_ERR; + } + ctx = sdi->priv; + + err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); + if (err != 0) { + sr_err("fx2lafw: Unable to claim interface: %d", err); + return SR_ERR; + } + return SR_OK; } -static int hw_dev_close(int device_index) +static int hw_dev_close(int dev_index) { - (void)device_index; + struct sr_dev_inst *sdi; + + if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { + sr_err("fx2lafw: %s: sdi was NULL", __func__); + return SR_ERR_BUG; + } + + /* TODO */ + close_dev(sdi); + return SR_OK; } @@ -127,64 +390,275 @@ static int hw_cleanup(void) { GSList *l; struct sr_dev_inst *sdi; - - for(l = device_instances; l; l = l->next) { + struct context *ctx; + int ret = SR_OK; + + 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); } - g_slist_free(device_instances); - device_instances = NULL; + g_slist_free(dev_insts); + dev_insts = NULL; if(usb_context) libusb_exit(usb_context); usb_context = NULL; - return SR_OK; + return ret; } -static void *hw_dev_info_get(int device_index, int device_info_id) +static void *hw_dev_info_get(int dev_index, int dev_info_id) { - (void)device_index; - (void)device_info_id; + struct sr_dev_inst *sdi; + struct context *ctx; + + 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; + case SR_DI_NUM_PROBES: + return GINT_TO_POINTER(ctx->profile->num_probes); + case SR_DI_PROBE_NAMES: + return fx2lafw_probe_names; + case SR_DI_SAMPLERATES: + return &fx2lafw_samplerates; + case SR_DI_TRIGGER_TYPES: + return TRIGGER_TYPES; + } + return NULL; } -static int hw_dev_status_get(int device_index) +static int hw_dev_status_get(int dev_index) { - (void)device_index; - return SR_ST_NOT_FOUND; + 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 NULL; + return fx2lafw_capabilities; } -static int hw_dev_config_set(int dev_index, int capability, void *value) +static int hw_dev_config_set(int dev_index, int hwcap, void *value) { - (void)dev_index; - (void)capability; - (void)value; - return SR_OK; + struct sr_dev_inst *sdi; + struct context *ctx; + int ret; + + if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) + return SR_ERR; + ctx = sdi->priv; + + if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { + ctx->limit_samples = *(uint64_t *)value; + ret = SR_OK; + } else { + ret = SR_ERR; + } + + return ret; } -static int hw_dev_acquisition_start(int dev_index, gpointer session_data) +static int receive_data(int fd, int revents, void *cb_data) { - (void)dev_index; - (void)session_data; + struct timeval tv; + + /* Avoid compiler warnings. */ + (void)fd; + (void)revents; + (void)cb_data; + + tv.tv_sec = tv.tv_usec = 0; + libusb_handle_events_timeout(usb_context, &tv); + + return TRUE; +} + +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; + 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; + + /* + * If acquisition has already ended, just free any queued up + * transfer that come in. + */ + if (num_samples == -1) { + if (transfer) + libusb_free_transfer(transfer); + return; + } + + 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__); + } + + if (cur_buflen == 0) { + empty_transfer_count++; + if (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); + } + return; + } else { + empty_transfer_count = 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); + } +} + +static int hw_dev_acquisition_start(int dev_index, void *cb_data) +{ + struct sr_dev_inst *sdi; + struct sr_datafeed_packet *packet; + struct sr_datafeed_header *header; + struct context *ctx; + struct libusb_transfer *transfer; + const struct libusb_pollfd **lupfd; + int size, i; + unsigned char *buf; + + if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) + 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 (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { + sr_err("fx2lafw: %s: header malloc failed", __func__); + return SR_ERR_MALLOC; + } + + /* Start with 2K transfer, subsequently increased to 4K. */ + size = 2048; + for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { + if (!(buf = g_try_malloc(size))) { + 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, + 2 | LIBUSB_ENDPOINT_IN, buf, size, + receive_transfer, ctx, 40); + if (libusb_submit_transfer(transfer) != 0) { + /* TODO: Free them all. */ + libusb_free_transfer(transfer); + g_free(buf); + return SR_ERR; + } + size = 4096; + } + + lupfd = libusb_get_pollfds(usb_context); + for (i = 0; lupfd[i]; i++) + sr_source_add(lupfd[i]->fd, lupfd[i]->events, + 40, 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 = 24000000UL; + header->num_logic_probes = ctx->profile->num_probes; + sr_session_send(session_dev_id, packet); + g_free(header); + g_free(packet); + return SR_OK; } -/* This stops acquisition on ALL devices, ignoring device_index. */ -static int hw_dev_acquisition_stop(int dev_index, gpointer session_data) +/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ +static int hw_dev_acquisition_stop(int dev_index, void *session_dev_id) { + struct sr_datafeed_packet packet; + + /* Avoid compiler warnings. */ (void)dev_index; - (void)session_data; + + packet.type = SR_DF_END; + sr_session_send(session_dev_id, &packet); + + receive_transfer(NULL); + + /* TODO: Need to cancel and free any queued up transfers. */ + return SR_OK; } -SR_PRIV struct sr_dev_plugin fx2lafw_plugin_info = { +SR_PRIV struct sr_dev_driver fx2lafw_driver_info = { .name = "fx2lafw", .longname = "fx2lafw", .api_version = 1,