X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Ffx2lafw%2Ffx2lafw.c;h=7142a35de7037f9070bc651f0798b1935bf50d76;hb=c9166745f23889e1c5abb010513733c829c00d1b;hp=359df017a56f223817453ce5be5f330b8af15b08;hpb=9031ce63f3cee037ffc3e565cf324cafe38522f5;p=libsigrok.git diff --git a/hardware/fx2lafw/fx2lafw.c b/hardware/fx2lafw/fx2lafw.c index 359df017..7142a35d 100644 --- a/hardware/fx2lafw/fx2lafw.c +++ b/hardware/fx2lafw/fx2lafw.c @@ -1,6 +1,7 @@ /* * This file is part of the sigrok project. * + * Copyright (C) 2010-2012 Bert Vermeulen * Copyright (C) 2012 Joel Holdsworth * * This program is free software: you can redistribute it and/or modify @@ -19,22 +20,69 @@ #include #include +#include #include -#include #include #include "config.h" -#include "sigrok.h" -#include "sigrok-internal.h" +#include "libsigrok.h" +#include "libsigrok-internal.h" #include "fx2lafw.h" #include "command.h" -static struct fx2lafw_profile supported_fx2[] = { - /* USBee AX */ - { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, 8 }, - { 0, 0, 0, 0, 0, 0 } +static const struct fx2lafw_profile supported_fx2[] = { + /* + * CWAV USBee DX + * XZL Studio DX + */ + { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL, + FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw", + 0 }, + /* + * CWAV USBee AX + * EE Electronics ESLA201A + * ARMFLY AX-Pro + */ + { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, + FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw", + 0 }, + + /* + * 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 int fx2lafw_capabilities[] = { +static const int hwcaps[] = { SR_HWCAP_LOGIC_ANALYZER, SR_HWCAP_SAMPLERATE, @@ -44,19 +92,37 @@ static int fx2lafw_capabilities[] = { 0, }; -static const char *fx2lafw_probe_names[] = { - "D0", - "D1", - "D2", - "D3", - "D4", - "D5", - "D6", - "D7", +/* + * TODO: Different probe_names[] for each supported device. + */ +static const char *probe_names[] = { + "0", + "1", + "2", + "3", + "4", + "5", + "6", + "7", + "8", + "9", + "10", + "11", + "12", + "13", + "14", + "15", NULL, }; -static uint64_t fx2lafw_supported_samplerates[] = { +static const uint64_t supported_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), @@ -66,20 +132,21 @@ static uint64_t fx2lafw_supported_samplerates[] = { SR_MHZ(12), SR_MHZ(16), SR_MHZ(24), + 0, }; -static struct sr_samplerates fx2lafw_samplerates = { - SR_MHZ(1), - SR_MHZ(24), - SR_HZ(0), - fx2lafw_supported_samplerates, +static const struct sr_samplerates samplerates = { + 0, + 0, + 0, + supported_samplerates, }; static GSList *dev_insts = NULL; static libusb_context *usb_context = NULL; -static int hw_dev_config_set(int dev_index, int hwcap, void *value); -static int hw_dev_acquisition_stop(int dev_index, void *session_dev_id); +static int hw_dev_config_set(int dev_index, int hwcap, const void *value); +static int hw_dev_acquisition_stop(int dev_index, void *cb_data); /** * Check the USB configuration to determine if this is an fx2lafw device. @@ -90,61 +157,50 @@ static int hw_dev_acquisition_stop(int dev_index, void *session_dev_id); 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; + struct libusb_device_handle *hdl; + gboolean ret; + unsigned char strdesc[64]; + hdl = NULL; + ret = FALSE; while (!ret) { - /* Assume it's not a Saleae Logic unless proven wrong. */ - ret = 0; - + /* Assume the FW has not been loaded, unless proven wrong. */ if (libusb_get_device_descriptor(dev, &des) != 0) break; - if (des.bNumConfigurations != 1) - /* Need exactly 1 configuration. */ + if (libusb_open(dev, &hdl) != 0) break; - if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) + if (libusb_get_string_descriptor_ascii(hdl, + des.iManufacturer, strdesc, sizeof(strdesc)) < 0) break; - - if (conf_dsc->bNumInterfaces != 1) - /* Need exactly 1 interface. */ + if (strncmp((const char *)strdesc, "sigrok", 6)) break; - if (conf_dsc->interface[0].num_altsetting != 1) - /* Need just one alternate setting. */ + if (libusb_get_string_descriptor_ascii(hdl, + des.iProduct, strdesc, sizeof(strdesc)) < 0) break; - - intf_dsc = &(conf_dsc->interface[0].altsetting[0]); - if (intf_dsc->bNumEndpoints != 2) - /* Need exactly 2 end points. */ - break; - - if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != - (2 | LIBUSB_ENDPOINT_IN)) // 0x82 - /* The first endpoint should be 2 (inbound). */ + if (strncmp((const char *)strdesc, "fx2lafw", 7)) 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); + if (hdl) + libusb_close(hdl); return ret; } -static int fx2lafw_open_dev(int dev_index) +static int fx2lafw_dev_open(int dev_index) { libusb_device **devlist; struct libusb_device_descriptor des; struct sr_dev_inst *sdi; struct context *ctx; - int err, skip, i; + struct version_info vi; + int ret, skip, i; + uint8_t revid; if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) return SR_ERR; @@ -155,10 +211,17 @@ static int fx2lafw_open_dev(int dev_index) 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); + const int device_count = libusb_get_device_list(usb_context, &devlist); + if (device_count < 0) { + sr_err("fx2lafw: Failed to retrieve device list (%d)", + device_count); + return SR_ERR; + } + + for (i = 0; i < device_count; i++) { + if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { + sr_err("fx2lafw: Failed to get device descriptor: %d.", + ret); continue; } @@ -183,23 +246,49 @@ static int fx2lafw_open_dev(int dev_index) continue; } - if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) { + if (!(ret = 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); + sr_err("fx2lafw: Failed to open device: %d.", ret); + break; } - /* if we made it here, we handled the device one way or another */ + ret = command_get_fw_version(ctx->usb->devhdl, &vi); + if (ret != SR_OK) { + sr_err("fx2lafw: Failed to retrieve " + "firmware version information."); + break; + } + + ret = command_get_revid_version(ctx->usb->devhdl, &revid); + if (ret != SR_OK) { + sr_err("fx2lafw: Failed to retrieve 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("fx2lafw: Expected firmware version %d.x, " + "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR, + vi.major, vi.minor); + break; + } + + sdi->status = SR_ST_ACTIVE; + sr_info("fx2lafw: Opened device %d on %d.%d " + "interface %d, firmware %d.%d, REVID %d.", + sdi->index, ctx->usb->bus, ctx->usb->address, + USB_INTERFACE, vi.major, vi.minor, revid); + break; } libusb_free_device_list(devlist, 1); @@ -219,23 +308,73 @@ static void close_dev(struct sr_dev_inst *sdi) 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); + 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) +static int configure_probes(struct context *ctx, GSList *probes) +{ + struct sr_probe *probe; + GSList *l; + int probe_bit, stage, i; + char *tc; + + for (i = 0; i < NUM_TRIGGER_STAGES; i++) { + ctx->trigger_mask[i] = 0; + ctx->trigger_value[i] = 0; + } + + stage = -1; + for (l = probes; l; l = l->next) { + probe = (struct sr_probe *)l->data; + if (probe->enabled == FALSE) + continue; + + if (probe->index > 8) + ctx->sample_wide = TRUE; + + probe_bit = 1 << (probe->index - 1); + if (!(probe->trigger)) + continue; + + stage = 0; + for (tc = probe->trigger; *tc; tc++) { + ctx->trigger_mask[stage] |= probe_bit; + if (*tc == '1') + ctx->trigger_value[stage] |= probe_bit; + stage++; + if (stage > NUM_TRIGGER_STAGES) + return SR_ERR; + } + } + + if (stage == -1) + /* + * We didn't configure any triggers, make sure acquisition + * doesn't wait for any. + */ + ctx->trigger_stage = TRIGGER_FIRED; + else + ctx->trigger_stage = 0; + + return SR_OK; +} + +static struct context *fx2lafw_dev_new(void) { struct context *ctx; if (!(ctx = g_try_malloc0(sizeof(struct context)))) { - sr_err("fx2lafw: %s: ctx malloc failed", __func__); + sr_err("fx2lafw: %s: ctx malloc failed.", __func__); return NULL; } + ctx->trigger_stage = TRIGGER_FIRED; + return ctx; } @@ -243,72 +382,72 @@ static struct context *fx2lafw_device_new(void) * API callbacks */ -static int hw_init(const char *deviceinfo) +static int hw_init(const char *devinfo) { struct sr_dev_inst *sdi; struct libusb_device_descriptor des; - struct fx2lafw_profile *fx2lafw_prof; + const struct fx2lafw_profile *prof; struct context *ctx; libusb_device **devlist; - int err; + int ret; int devcnt = 0; int i, j; /* Avoid compiler warnings. */ - (void)deviceinfo; + (void)devinfo; if (libusb_init(&usb_context) != 0) { - sr_warn("Failed to initialize USB."); + sr_warn("fx2lafw: Failed to initialize libusb."); return 0; } - /* Find all fx2lafw compatible devices and upload firware to all of them. */ + /* Find all fx2lafw compatible devices and upload firmware to them. */ libusb_get_device_list(usb_context, &devlist); for (i = 0; devlist[i]; i++) { - if ((err = libusb_get_device_descriptor( - devlist[i], &des)) != 0) { - sr_warn("failed to get device descriptor: %d", err); + if ((ret = libusb_get_device_descriptor( + devlist[i], &des)) != 0) { + sr_warn("fx2lafw: Failed to get device descriptor: %d.", ret); continue; } - fx2lafw_prof = NULL; + prof = NULL; for (j = 0; supported_fx2[j].vid; j++) { if (des.idVendor == supported_fx2[j].vid && des.idProduct == supported_fx2[j].pid) { - fx2lafw_prof = &supported_fx2[j]; + prof = &supported_fx2[j]; } } /* Skip if the device was not found */ - if(!fx2lafw_prof) + if (!prof) continue; sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING, - fx2lafw_prof->vendor, fx2lafw_prof->model, - fx2lafw_prof->model_version); - if(!sdi) + prof->vendor, prof->model, prof->model_version); + if (!sdi) return 0; - ctx = fx2lafw_device_new(); - ctx->profile = fx2lafw_prof; + ctx = fx2lafw_dev_new(); + ctx->profile = 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."); + sr_dbg("fx2lafw: Found an 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) + if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, + prof->firmware) == SR_OK) /* Remember when the firmware on this device was updated */ - g_get_current_time(&ctx->fw_updated); + ctx->fw_updated = g_get_monotonic_time(); else - sr_err("fx2lafw: firmware upload failed for " - "device %d", devcnt); + 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); } @@ -322,53 +461,69 @@ static int hw_init(const char *deviceinfo) static int hw_dev_open(int dev_index) { - GTimeVal cur_time; struct sr_dev_inst *sdi; struct context *ctx; - int timediff, err; + int ret; + int64_t timediff_us, timediff_ms; 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 + * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS + * milliseconds for the FX2 to renumerate. */ - err = 0; - if (GTV_TO_MSEC(ctx->fw_updated) > 0) { - sr_info("fx2lafw: waiting for device to reset"); + ret = SR_ERR; + if (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) + timediff_ms = 0; + while (timediff_ms < MAX_RENUM_DELAY_MS) { + if ((ret = fx2lafw_dev_open(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); + + timediff_us = g_get_monotonic_time() - ctx->fw_updated; + timediff_ms = timediff_us / 1000; + sr_spew("fx2lafw: waited %" PRIi64 " ms", timediff_ms); } - sr_info("fx2lafw: device came back after %d ms", timediff); + sr_info("fx2lafw: Device came back after %d ms.", timediff_ms); } else { - err = fx2lafw_open_dev(dev_index); + ret = fx2lafw_dev_open(dev_index); } - if (err != SR_OK) { - sr_err("fx2lafw: unable to open device"); + if (ret != 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); + ret = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); + if (ret != 0) { + switch(ret) { + case LIBUSB_ERROR_BUSY: + sr_err("fx2lafw: Unable to claim USB interface. Another " + "program or driver has already claimed it."); + break; + + case LIBUSB_ERROR_NO_DEVICE: + sr_err("fx2lafw: Device has been disconnected."); + break; + + default: + sr_err("fx2lafw: Unable to claim interface: %d.", ret); + break; + } + return SR_ERR; } if (ctx->cur_samplerate == 0) { /* Samplerate hasn't been set; default to the slowest one. */ if (hw_dev_config_set(dev_index, SR_HWCAP_SAMPLERATE, - &fx2lafw_supported_samplerates[0]) == SR_ERR) + &supported_samplerates[0]) == SR_ERR) return SR_ERR; } @@ -380,7 +535,7 @@ static int hw_dev_close(int dev_index) struct sr_dev_inst *sdi; if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { - sr_err("fx2lafw: %s: sdi was NULL", __func__); + sr_err("fx2lafw: %s: sdi was NULL.", __func__); return SR_ERR_BUG; } @@ -397,10 +552,11 @@ static int hw_cleanup(void) struct context *ctx; int ret = SR_OK; - for(l = dev_insts; l; l = l->next) { + 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__); + sr_err("fx2lafw: %s: sdi was NULL, continuing.", + __func__); ret = SR_ERR_BUG; continue; } @@ -419,14 +575,14 @@ static int hw_cleanup(void) g_slist_free(dev_insts); dev_insts = NULL; - if(usb_context) + if (usb_context) libusb_exit(usb_context); usb_context = NULL; return ret; } -static void *hw_dev_info_get(int dev_index, int dev_info_id) +static const void *hw_dev_info_get(int dev_index, int dev_info_id) { struct sr_dev_inst *sdi; struct context *ctx; @@ -439,11 +595,13 @@ static void *hw_dev_info_get(int dev_index, int dev_info_id) case SR_DI_INST: return sdi; case SR_DI_NUM_PROBES: - return GINT_TO_POINTER(ctx->profile->num_probes); + return GINT_TO_POINTER( + (ctx->profile->dev_caps & DEV_CAPS_16BIT) ? + 16 : 8); case SR_DI_PROBE_NAMES: - return fx2lafw_probe_names; + return probe_names; case SR_DI_SAMPLERATES: - return &fx2lafw_samplerates; + return &samplerates; case SR_DI_TRIGGER_TYPES: return TRIGGER_TYPES; case SR_DI_CUR_SAMPLERATE: @@ -464,12 +622,12 @@ static int hw_dev_status_get(int dev_index) return sdi->status; } -static int *hw_hwcap_get_all(void) +static const int *hw_hwcap_get_all(void) { - return fx2lafw_capabilities; + return hwcaps; } -static int hw_dev_config_set(int dev_index, int hwcap, void *value) +static int hw_dev_config_set(int dev_index, int hwcap, const void *value) { struct sr_dev_inst *sdi; struct context *ctx; @@ -480,12 +638,12 @@ static int hw_dev_config_set(int dev_index, int hwcap, void *value) ctx = sdi->priv; if (hwcap == SR_HWCAP_SAMPLERATE) { - ctx->cur_samplerate = *(uint64_t *)value; + ctx->cur_samplerate = *(const uint64_t *)value; ret = SR_OK; } else if (hwcap == SR_HWCAP_PROBECONFIG) { - ret = SR_OK; + ret = configure_probes(ctx, (GSList *) value); } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { - ctx->limit_samples = *(uint64_t *)value; + ctx->limit_samples = *(const uint64_t *)value; ret = SR_OK; } else { ret = SR_ERR; @@ -510,156 +668,324 @@ static int receive_data(int fd, int revents, void *cb_data) } static void abort_acquisition(struct context *ctx) +{ + int i; + + ctx->num_samples = -1; + + for (i = ctx->num_transfers - 1; i >= 0; i--) { + if (ctx->transfers[i]) + libusb_cancel_transfer(ctx->transfers[i]); + } +} + +static void finish_acquisition(struct context *ctx) { struct sr_datafeed_packet packet; + int i; + /* Terminate session */ packet.type = SR_DF_END; sr_session_send(ctx->session_dev_id, &packet); - ctx->num_samples = -1; + /* Remove fds from polling */ + const struct libusb_pollfd **const lupfd = + libusb_get_pollfds(usb_context); + for (i = 0; lupfd[i]; i++) + sr_source_remove(lupfd[i]->fd); + free(lupfd); /* NOT g_free()! */ + + ctx->num_transfers = 0; + g_free(ctx->transfers); +} + +static void free_transfer(struct libusb_transfer *transfer) +{ + struct context *ctx = transfer->user_data; + unsigned int i; + + g_free(transfer->buffer); + transfer->buffer = NULL; + libusb_free_transfer(transfer); + + for (i = 0; i < ctx->num_transfers; i++) { + if (ctx->transfers[i] == transfer) { + ctx->transfers[i] = NULL; + break; + } + } - /* TODO: Need to cancel and free any queued up transfers. */ + ctx->submitted_transfers--; + if (ctx->submitted_transfers == 0) + finish_acquisition(ctx); + +} + +static void resubmit_transfer(struct libusb_transfer *transfer) +{ + if (libusb_submit_transfer(transfer) != 0) { + free_transfer(transfer); + /* TODO: Stop session? */ + /* TODO: Better error message. */ + sr_err("fx2lafw: %s: libusb_submit_transfer error.", __func__); + } } static void receive_transfer(struct libusb_transfer *transfer) { - /* TODO: These statics have to move to the ctx struct. */ - static int empty_transfer_count = 0; + gboolean packet_has_error = FALSE; struct sr_datafeed_packet packet; struct sr_datafeed_logic logic; struct context *ctx = transfer->user_data; - int cur_buflen; - unsigned char *cur_buf, *new_buf; + int trigger_offset, i; /* * If acquisition has already ended, just free any queued up * transfer that come in. */ if (ctx->num_samples == -1) { - if (transfer) - libusb_free_transfer(transfer); + free_transfer(transfer); return; } - sr_info("fx2lafw: receive_transfer(): status %d received %d bytes", + 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 */ - } + uint8_t *const cur_buf = transfer->buffer; + const int sample_width = ctx->sample_wide ? 2 : 1; + const int cur_sample_count = transfer->actual_length / sample_width; - 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__); + switch (transfer->status) { + case LIBUSB_TRANSFER_NO_DEVICE: + abort_acquisition(ctx); + free_transfer(transfer); + return; + case LIBUSB_TRANSFER_COMPLETED: + case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */ + break; + default: + packet_has_error = TRUE; + break; } - if (cur_buflen == 0) { - empty_transfer_count++; - if (empty_transfer_count > MAX_EMPTY_TRANSFERS) { + if (transfer->actual_length == 0 || packet_has_error) { + ctx->empty_transfer_count++; + if (ctx->empty_transfer_count > MAX_EMPTY_TRANSFERS) { /* * The FX2 gave up. End the acquisition, the frontend * will work out that the samplecount is short. */ abort_acquisition(ctx); + free_transfer(transfer); + } else { + resubmit_transfer(transfer); } return; } else { - empty_transfer_count = 0; + ctx->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); + trigger_offset = 0; + if (ctx->trigger_stage >= 0) { + for (i = 0; i < cur_sample_count; i++) { + + const uint16_t cur_sample = ctx->sample_wide ? + *((const uint16_t*)cur_buf + i) : + *((const uint8_t*)cur_buf + i); + + if ((cur_sample & ctx->trigger_mask[ctx->trigger_stage]) == + ctx->trigger_value[ctx->trigger_stage]) { + /* Match on this trigger stage. */ + ctx->trigger_buffer[ctx->trigger_stage] = cur_sample; + ctx->trigger_stage++; + + if (ctx->trigger_stage == NUM_TRIGGER_STAGES || + ctx->trigger_mask[ctx->trigger_stage] == 0) { + /* Match on all trigger stages, we're done. */ + trigger_offset = i + 1; + + /* + * TODO: Send pre-trigger buffer to session bus. + * Tell the frontend we hit the trigger here. + */ + packet.type = SR_DF_TRIGGER; + packet.payload = NULL; + sr_session_send(ctx->session_dev_id, &packet); + + /* + * Send the samples that triggered it, since we're + * skipping past them. + */ + packet.type = SR_DF_LOGIC; + packet.payload = &logic; + logic.unitsize = sizeof(*ctx->trigger_buffer); + logic.length = ctx->trigger_stage * logic.unitsize; + logic.data = ctx->trigger_buffer; + sr_session_send(ctx->session_dev_id, &packet); + + ctx->trigger_stage = TRIGGER_FIRED; + break; + } + } else if (ctx->trigger_stage > 0) { + /* + * We had a match before, but not in the next sample. However, we may + * have a match on this stage in the next bit -- trigger on 0001 will + * fail on seeing 00001, so we need to go back to stage 0 -- but at + * the next sample from the one that matched originally, which the + * counter increment at the end of the loop takes care of. + */ + i -= ctx->trigger_stage; + if (i < -1) + i = -1; /* Oops, went back past this buffer. */ + /* Reset trigger stage. */ + ctx->trigger_stage = 0; + } + } + } - ctx->num_samples += cur_buflen; - if (ctx->limit_samples && - (unsigned int) ctx->num_samples > ctx->limit_samples) { - abort_acquisition(ctx); + if (ctx->trigger_stage == TRIGGER_FIRED) { + /* Send the incoming transfer to the session bus. */ + const int trigger_offset_bytes = trigger_offset * sample_width; + packet.type = SR_DF_LOGIC; + packet.payload = &logic; + logic.length = transfer->actual_length - trigger_offset_bytes; + logic.unitsize = sample_width; + logic.data = cur_buf + trigger_offset_bytes; + sr_session_send(ctx->session_dev_id, &packet); + + ctx->num_samples += cur_sample_count; + if (ctx->limit_samples && + (unsigned int)ctx->num_samples > ctx->limit_samples) { + abort_acquisition(ctx); + free_transfer(transfer); + return; + } + } else { + /* + * TODO: Buffer pre-trigger data in capture + * ratio-sized buffer. + */ } + + resubmit_transfer(transfer); +} + +static unsigned int to_bytes_per_ms(unsigned int samplerate) +{ + return samplerate / 1000; +} + +static size_t get_buffer_size(struct context *ctx) +{ + size_t s; + + /* The buffer should be large enough to hold 10ms of data and a multiple + * of 512. */ + s = 10 * to_bytes_per_ms(ctx->cur_samplerate); + return (s + 511) & ~511; +} + +static unsigned int get_number_of_transfers(struct context *ctx) +{ + unsigned int n; + + /* Total buffer size should be able to hold about 500ms of data */ + n = 500 * to_bytes_per_ms(ctx->cur_samplerate) / get_buffer_size(ctx); + + if (n > NUM_SIMUL_TRANSFERS) + return NUM_SIMUL_TRANSFERS; + + return n; +} + +static unsigned int get_timeout(struct context *ctx) +{ + size_t total_size; + unsigned int timeout; + + total_size = get_buffer_size(ctx) * get_number_of_transfers(ctx); + timeout = total_size / to_bytes_per_ms(ctx->cur_samplerate); + return timeout + timeout / 4; /* Leave a headroom of 25% percent */ } 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 sr_datafeed_packet packet; + struct sr_datafeed_header header; + struct sr_datafeed_meta_logic meta; struct context *ctx; struct libusb_transfer *transfer; const struct libusb_pollfd **lupfd; - int err, size, i; + unsigned int i; + int ret; unsigned char *buf; if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) return SR_ERR; ctx = sdi->priv; + + if (ctx->submitted_transfers != 0) + return SR_ERR; + ctx->session_dev_id = cb_data; ctx->num_samples = 0; + ctx->empty_transfer_count = 0; - if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { - sr_err("fx2lafw: %s: packet malloc failed", __func__); - return SR_ERR_MALLOC; - } + const unsigned int timeout = get_timeout(ctx); + const unsigned int num_transfers = get_number_of_transfers(ctx); + const size_t size = get_buffer_size(ctx); - if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { - sr_err("fx2lafw: %s: header malloc failed", __func__); - return SR_ERR_MALLOC; - } + ctx->transfers = g_try_malloc0(sizeof(*ctx->transfers) * num_transfers); + if (!ctx->transfers) + return SR_ERR; - if ((err = command_start_acquisition (ctx->usb->devhdl, - ctx->cur_samplerate)) != SR_OK) { - return err; - } + ctx->num_transfers = num_transfers; - /* Start with 2K transfer, subsequently increased to 4K. */ - size = 2048; - for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { + for (i = 0; i < num_transfers; i++) { if (!(buf = g_try_malloc(size))) { - sr_err("fx2lafw: %s: buf malloc failed", __func__); + 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); + receive_transfer, ctx, timeout); if (libusb_submit_transfer(transfer) != 0) { - /* TODO: Free them all. */ libusb_free_transfer(transfer); g_free(buf); + abort_acquisition(ctx); return SR_ERR; } - size = 4096; + ctx->transfers[i] = transfer; + ctx->submitted_transfers++; } 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); + timeout, 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 = ctx->cur_samplerate; - header->num_logic_probes = ctx->profile->num_probes; - sr_session_send(cb_data, packet); - g_free(header); - g_free(packet); + packet.type = SR_DF_HEADER; + packet.payload = &header; + header.feed_version = 1; + gettimeofday(&header.starttime, NULL); + sr_session_send(cb_data, &packet); + + /* Send metadata about the SR_DF_LOGIC packets to come. */ + packet.type = SR_DF_META_LOGIC; + packet.payload = &meta; + meta.samplerate = ctx->cur_samplerate; + meta.num_probes = ctx->sample_wide ? 16 : 8; + sr_session_send(cb_data, &packet); + + if ((ret = command_start_acquisition (ctx->usb->devhdl, + ctx->cur_samplerate, ctx->sample_wide)) != SR_OK) { + abort_acquisition(ctx); + return ret; + } return SR_OK; } @@ -669,7 +995,7 @@ static int hw_dev_acquisition_stop(int dev_index, void *cb_data) { struct sr_dev_inst *sdi; - /* unused parameter */ + /* Avoid compiler warnings. */ (void)cb_data; if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) @@ -682,7 +1008,7 @@ static int hw_dev_acquisition_stop(int dev_index, void *cb_data) SR_PRIV struct sr_dev_driver fx2lafw_driver_info = { .name = "fx2lafw", - .longname = "fx2lafw", + .longname = "fx2lafw (generic driver for FX2 based LAs)", .api_version = 1, .init = hw_init, .cleanup = hw_cleanup,