*/
#include <config.h>
+#include <math.h>
#include <glib.h>
#include <glib/gstdio.h>
#include "protocol.h"
-#include "dslogic.h"
+
+#define DS_CMD_GET_FW_VERSION 0xb0
+#define DS_CMD_GET_REVID_VERSION 0xb1
+#define DS_CMD_START 0xb2
+#define DS_CMD_CONFIG 0xb3
+#define DS_CMD_SETTING 0xb4
+#define DS_CMD_CONTROL 0xb5
+#define DS_CMD_STATUS 0xb6
+#define DS_CMD_STATUS_INFO 0xb7
+#define DS_CMD_WR_REG 0xb8
+#define DS_CMD_WR_NVM 0xb9
+#define DS_CMD_RD_NVM 0xba
+#define DS_CMD_RD_NVM_PRE 0xbb
+#define DS_CMD_GET_HW_INFO 0xbc
+
+#define DS_START_FLAGS_STOP (1 << 7)
+#define DS_START_FLAGS_CLK_48MHZ (1 << 6)
+#define DS_START_FLAGS_SAMPLE_WIDE (1 << 5)
+#define DS_START_FLAGS_MODE_LA (1 << 4)
+
+#define DS_ADDR_COMB 0x68
+#define DS_ADDR_EEWP 0x70
+#define DS_ADDR_VTH 0x78
+
+#define DS_MAX_LOGIC_DEPTH SR_MHZ(16)
+#define DS_MAX_LOGIC_SAMPLERATE SR_MHZ(100)
+#define DS_MAX_TRIG_PERCENT 90
+
+#define DS_MODE_TRIG_EN (1 << 0)
+#define DS_MODE_CLK_TYPE (1 << 1)
+#define DS_MODE_CLK_EDGE (1 << 2)
+#define DS_MODE_RLE_MODE (1 << 3)
+#define DS_MODE_DSO_MODE (1 << 4)
+#define DS_MODE_HALF_MODE (1 << 5)
+#define DS_MODE_QUAR_MODE (1 << 6)
+#define DS_MODE_ANALOG_MODE (1 << 7)
+#define DS_MODE_FILTER (1 << 8)
+#define DS_MODE_INSTANT (1 << 9)
+#define DS_MODE_STRIG_MODE (1 << 11)
+#define DS_MODE_STREAM_MODE (1 << 12)
+#define DS_MODE_LPB_TEST (1 << 13)
+#define DS_MODE_EXT_TEST (1 << 14)
+#define DS_MODE_INT_TEST (1 << 15)
+
+#define DSLOGIC_ATOMIC_SAMPLES (1 << 6)
+
+/*
+ * The FPGA is configured with TLV tuples. Length is specified as the
+ * number of 16-bit words.
+ */
+#define _DS_CFG(variable, wordcnt) ((variable << 8) | wordcnt)
+#define DS_CFG_START 0xf5a5f5a5
+#define DS_CFG_MODE _DS_CFG(0, 1)
+#define DS_CFG_DIVIDER _DS_CFG(1, 2)
+#define DS_CFG_COUNT _DS_CFG(3, 2)
+#define DS_CFG_TRIG_POS _DS_CFG(5, 2)
+#define DS_CFG_TRIG_GLB _DS_CFG(7, 1)
+#define DS_CFG_CH_EN _DS_CFG(8, 1)
+#define DS_CFG_TRIG _DS_CFG(64, 160)
+#define DS_CFG_END 0xfa5afa5a
#pragma pack(push, 1)
uint8_t sample_delay_l;
};
+struct dslogic_fpga_config {
+ uint32_t sync;
+
+ uint16_t mode_header;
+ uint16_t mode;
+ uint16_t divider_header;
+ uint32_t divider;
+ uint16_t count_header;
+ uint32_t count;
+ uint16_t trig_pos_header;
+ uint32_t trig_pos;
+ uint16_t trig_glb_header;
+ uint16_t trig_glb;
+ uint16_t ch_en_header;
+ uint16_t ch_en;
+
+ uint16_t trig_header;
+ uint16_t trig_mask0[NUM_TRIGGER_STAGES];
+ uint16_t trig_mask1[NUM_TRIGGER_STAGES];
+ uint16_t trig_value0[NUM_TRIGGER_STAGES];
+ uint16_t trig_value1[NUM_TRIGGER_STAGES];
+ uint16_t trig_edge0[NUM_TRIGGER_STAGES];
+ uint16_t trig_edge1[NUM_TRIGGER_STAGES];
+ uint16_t trig_logic0[NUM_TRIGGER_STAGES];
+ uint16_t trig_logic1[NUM_TRIGGER_STAGES];
+ uint32_t trig_count[NUM_TRIGGER_STAGES];
+
+ uint32_t end_sync;
+};
+
#pragma pack(pop)
-#define USB_TIMEOUT 100
+/*
+ * This should be larger than the FPGA bitstream image so that it'll get
+ * uploaded in one big operation. There seem to be issues when uploading
+ * it in chunks.
+ */
+#define FW_BUFSIZE (1024 * 1024)
+
+#define FPGA_UPLOAD_DELAY (10 * 1000)
+
+#define USB_TIMEOUT (3 * 1000)
static int command_get_fw_version(libusb_device_handle *devhdl,
struct version_info *vi)
return SR_OK;
}
+static int command_start_acquisition(const struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+ struct dslogic_mode mode;
+ int ret;
+
+ mode.flags = DS_START_FLAGS_MODE_LA | DS_START_FLAGS_SAMPLE_WIDE;
+ mode.sample_delay_h = mode.sample_delay_l = 0;
+
+ usb = sdi->conn;
+ ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
+ LIBUSB_ENDPOINT_OUT, DS_CMD_START, 0x0000, 0x0000,
+ (unsigned char *)&mode, sizeof(mode), USB_TIMEOUT);
+ if (ret < 0) {
+ sr_err("Failed to send start command: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+static int command_stop_acquisition(const struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+ struct dslogic_mode mode;
+ int ret;
+
+ mode.flags = DS_START_FLAGS_STOP;
+ mode.sample_delay_h = mode.sample_delay_l = 0;
+
+ usb = sdi->conn;
+ ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
+ LIBUSB_ENDPOINT_OUT, DS_CMD_START, 0x0000, 0x0000,
+ (unsigned char *)&mode, sizeof(struct dslogic_mode), USB_TIMEOUT);
+ if (ret < 0) {
+ sr_err("Failed to send stop command: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int dslogic_fpga_firmware_upload(const struct sr_dev_inst *sdi)
+{
+ const char *name = NULL;
+ uint64_t sum;
+ struct sr_resource bitstream;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ unsigned char *buf;
+ ssize_t chunksize;
+ int transferred;
+ int result, ret;
+ const uint8_t cmd[3] = {0, 0, 0};
+
+ drvc = sdi->driver->context;
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (!strcmp(devc->profile->model, "DSLogic")) {
+ if (devc->cur_threshold < 1.40)
+ name = DSLOGIC_FPGA_FIRMWARE_3V3;
+ else
+ name = DSLOGIC_FPGA_FIRMWARE_5V;
+ } else if (!strcmp(devc->profile->model, "DSLogic Pro")){
+ name = DSLOGIC_PRO_FPGA_FIRMWARE;
+ } else if (!strcmp(devc->profile->model, "DSLogic Plus")){
+ name = DSLOGIC_PLUS_FPGA_FIRMWARE;
+ } else if (!strcmp(devc->profile->model, "DSLogic Basic")){
+ name = DSLOGIC_BASIC_FPGA_FIRMWARE;
+ } else if (!strcmp(devc->profile->model, "DSCope")) {
+ name = DSCOPE_FPGA_FIRMWARE;
+ } else {
+ sr_err("Failed to select FPGA firmware.");
+ return SR_ERR;
+ }
+
+ sr_dbg("Uploading FPGA firmware '%s'.", name);
+
+ result = sr_resource_open(drvc->sr_ctx, &bitstream,
+ SR_RESOURCE_FIRMWARE, name);
+ if (result != SR_OK)
+ return result;
+
+ /* Tell the device firmware is coming. */
+ if ((ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
+ LIBUSB_ENDPOINT_OUT, DS_CMD_CONFIG, 0x0000, 0x0000,
+ (unsigned char *)&cmd, sizeof(cmd), USB_TIMEOUT)) < 0) {
+ sr_err("Failed to upload FPGA firmware: %s.", libusb_error_name(ret));
+ sr_resource_close(drvc->sr_ctx, &bitstream);
+ return SR_ERR;
+ }
+
+ /* Give the FX2 time to get ready for FPGA firmware upload. */
+ g_usleep(FPGA_UPLOAD_DELAY);
+
+ buf = g_malloc(FW_BUFSIZE);
+ sum = 0;
+ result = SR_OK;
+ while (1) {
+ chunksize = sr_resource_read(drvc->sr_ctx, &bitstream,
+ buf, FW_BUFSIZE);
+ if (chunksize < 0)
+ result = SR_ERR;
+ if (chunksize <= 0)
+ break;
+
+ if ((ret = libusb_bulk_transfer(usb->devhdl, 2 | LIBUSB_ENDPOINT_OUT,
+ buf, chunksize, &transferred, USB_TIMEOUT)) < 0) {
+ sr_err("Unable to configure FPGA firmware: %s.",
+ libusb_error_name(ret));
+ result = SR_ERR;
+ break;
+ }
+ sum += transferred;
+ sr_spew("Uploaded %" PRIu64 "/%" PRIu64 " bytes.",
+ sum, bitstream.size);
+
+ if (transferred != chunksize) {
+ sr_err("Short transfer while uploading FPGA firmware.");
+ result = SR_ERR;
+ break;
+ }
+ }
+ g_free(buf);
+ sr_resource_close(drvc->sr_ctx, &bitstream);
+
+ if (result == SR_OK)
+ sr_dbg("FPGA firmware upload done.");
+
+ return result;
+}
+
+/*
+ * Get the session trigger and configure the FPGA structure
+ * accordingly.
+ */
+static void set_trigger(const struct sr_dev_inst *sdi,
+ struct dslogic_fpga_config *cfg)
+{
+ struct sr_trigger *trigger;
+ struct sr_trigger_stage *stage;
+ struct sr_trigger_match *match;
+ struct dev_context *devc;
+ const GSList *l, *m;
+ int num_enabled_channels = 0, num_trigger_stages = 0;
+ int channelbit, i = 0;
+ uint32_t trigger_point;
+
+ devc = sdi->priv;
+
+ cfg->ch_en = 0;
+ for (l = sdi->channels; l; l = l->next) {
+ const struct sr_channel *const probe = (struct sr_channel *)l->data;
+ if (probe->enabled) {
+ num_enabled_channels++;
+ cfg->ch_en |= 1 << probe->index;
+ }
+ }
+
+ cfg->trig_mask0[0] = 0xffff;
+ cfg->trig_mask1[0] = 0xffff;
+
+ cfg->trig_value0[0] = 0;
+ cfg->trig_value1[0] = 0;
+
+ cfg->trig_edge0[0] = 0;
+ cfg->trig_edge1[0] = 0;
+
+ cfg->trig_logic0[0] = 2;
+ cfg->trig_logic1[0] = 2;
+
+ cfg->trig_count[0] = 0;
+
+ cfg->trig_glb = num_enabled_channels << 4;
+
+ for (i = 1; i < NUM_TRIGGER_STAGES; i++) {
+ cfg->trig_mask0[i] = 0xffff;
+ cfg->trig_mask1[i] = 0xffff;
+ cfg->trig_value0[i] = 0;
+ cfg->trig_value1[i] = 0;
+ cfg->trig_edge0[i] = 0;
+ cfg->trig_edge1[i] = 0;
+ cfg->trig_logic0[i] = 2;
+ cfg->trig_logic1[i] = 2;
+ cfg->trig_count[i] = 0;
+ }
+
+ trigger_point = (devc->capture_ratio * devc->limit_samples) / 100;
+ if (trigger_point < DSLOGIC_ATOMIC_SAMPLES)
+ trigger_point = DSLOGIC_ATOMIC_SAMPLES;
+ const uint32_t mem_depth = devc->profile->mem_depth;
+ const uint32_t max_trigger_point = devc->continuous_mode ? ((mem_depth * 10) / 100) :
+ ((mem_depth * DS_MAX_TRIG_PERCENT) / 100);
+ if (trigger_point > max_trigger_point)
+ trigger_point = max_trigger_point;
+ cfg->trig_pos = trigger_point & ~(DSLOGIC_ATOMIC_SAMPLES - 1);
+
+ if (!(trigger = sr_session_trigger_get(sdi->session))) {
+ sr_dbg("No session trigger found");
+ return;
+ }
+
+ for (l = trigger->stages; l; l = l->next) {
+ stage = l->data;
+ num_trigger_stages++;
+ for (m = stage->matches; m; m = m->next) {
+ match = m->data;
+ if (!match->channel->enabled)
+ /* Ignore disabled channels with a trigger. */
+ continue;
+ channelbit = 1 << (match->channel->index);
+ /* Simple trigger support (event). */
+ if (match->match == SR_TRIGGER_ONE) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ cfg->trig_value0[0] |= channelbit;
+ cfg->trig_value1[0] |= channelbit;
+ } else if (match->match == SR_TRIGGER_ZERO) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ } else if (match->match == SR_TRIGGER_FALLING) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ cfg->trig_edge0[0] |= channelbit;
+ cfg->trig_edge1[0] |= channelbit;
+ } else if (match->match == SR_TRIGGER_RISING) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ cfg->trig_value0[0] |= channelbit;
+ cfg->trig_value1[0] |= channelbit;
+ cfg->trig_edge0[0] |= channelbit;
+ cfg->trig_edge1[0] |= channelbit;
+ } else if (match->match == SR_TRIGGER_EDGE) {
+ cfg->trig_edge0[0] |= channelbit;
+ cfg->trig_edge1[0] |= channelbit;
+ }
+ }
+ }
+
+ cfg->trig_glb |= num_trigger_stages;
+
+ return;
+}
+
+static int fpga_configure(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ uint8_t c[3];
+ struct dslogic_fpga_config cfg;
+ uint16_t v16;
+ uint32_t v32;
+ int transferred, len, ret;
+
+ sr_dbg("Configuring FPGA.");
+
+ usb = sdi->conn;
+ devc = sdi->priv;
+
+ WL32(&cfg.sync, DS_CFG_START);
+ WL16(&cfg.mode_header, DS_CFG_MODE);
+ WL16(&cfg.divider_header, DS_CFG_DIVIDER);
+ WL16(&cfg.count_header, DS_CFG_COUNT);
+ WL16(&cfg.trig_pos_header, DS_CFG_TRIG_POS);
+ WL16(&cfg.trig_glb_header, DS_CFG_TRIG_GLB);
+ WL16(&cfg.ch_en_header, DS_CFG_CH_EN);
+ WL16(&cfg.trig_header, DS_CFG_TRIG);
+ WL32(&cfg.end_sync, DS_CFG_END);
+
+ /* Pass in the length of a fixed-size struct. Really. */
+ len = sizeof(struct dslogic_fpga_config) / 2;
+ c[0] = len & 0xff;
+ c[1] = (len >> 8) & 0xff;
+ c[2] = (len >> 16) & 0xff;
+
+ ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
+ LIBUSB_ENDPOINT_OUT, DS_CMD_SETTING, 0x0000, 0x0000,
+ c, sizeof(c), USB_TIMEOUT);
+ if (ret < 0) {
+ sr_err("Failed to send FPGA configure command: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ v16 = 0x0000;
+
+ if (devc->mode == DS_OP_INTERNAL_TEST)
+ v16 = DS_MODE_INT_TEST;
+ else if (devc->mode == DS_OP_EXTERNAL_TEST)
+ v16 = DS_MODE_EXT_TEST;
+ else if (devc->mode == DS_OP_LOOPBACK_TEST)
+ v16 = DS_MODE_LPB_TEST;
+
+ if (devc->cur_samplerate == DS_MAX_LOGIC_SAMPLERATE * 2)
+ v16 |= DS_MODE_HALF_MODE;
+ else if (devc->cur_samplerate == DS_MAX_LOGIC_SAMPLERATE * 4)
+ v16 |= DS_MODE_QUAR_MODE;
+
+ if (devc->continuous_mode)
+ v16 |= DS_MODE_STREAM_MODE;
+ if (devc->external_clock) {
+ v16 |= DS_MODE_CLK_TYPE;
+ if (devc->clock_edge == DS_EDGE_FALLING)
+ v16 |= DS_MODE_CLK_EDGE;
+ }
+ if (devc->limit_samples > DS_MAX_LOGIC_DEPTH *
+ ceil(devc->cur_samplerate * 1.0 / DS_MAX_LOGIC_SAMPLERATE)
+ && !devc->continuous_mode) {
+ /* Enable RLE for long captures.
+ * Without this, captured data present errors.
+ */
+ v16 |= DS_MODE_RLE_MODE;
+ }
+
+ WL16(&cfg.mode, v16);
+ v32 = ceil(DS_MAX_LOGIC_SAMPLERATE * 1.0 / devc->cur_samplerate);
+ WL32(&cfg.divider, v32);
+
+ /* Number of 16-sample units. */
+ WL32(&cfg.count, devc->limit_samples / 16);
+
+ set_trigger(sdi, &cfg);
+
+ len = sizeof(struct dslogic_fpga_config);
+ ret = libusb_bulk_transfer(usb->devhdl, 2 | LIBUSB_ENDPOINT_OUT,
+ (unsigned char *)&cfg, len, &transferred, USB_TIMEOUT);
+ if (ret < 0 || transferred != len) {
+ sr_err("Failed to send FPGA configuration: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
SR_PRIV int dslogic_set_voltage_threshold(const struct sr_dev_inst *sdi, double threshold)
{
int ret;
return devc;
}
-SR_PRIV void dslogic_abort_acquisition(struct dev_context *devc)
+static void abort_acquisition(struct dev_context *devc)
{
int i;
}
-SR_PRIV void dslogic_send_data(struct sr_dev_inst *sdi,
+static void send_data(struct sr_dev_inst *sdi,
uint8_t *data, size_t length, size_t sample_width)
{
const struct sr_datafeed_logic logic = {
sr_session_send(sdi, &packet);
}
-SR_PRIV void LIBUSB_CALL dslogic_receive_transfer(struct libusb_transfer *transfer)
+static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
{
struct sr_dev_inst *sdi;
struct dev_context *devc;
switch (transfer->status) {
case LIBUSB_TRANSFER_NO_DEVICE:
- dslogic_abort_acquisition(devc);
+ abort_acquisition(devc);
free_transfer(transfer);
return;
case LIBUSB_TRANSFER_COMPLETED:
* The FX2 gave up. End the acquisition, the frontend
* will work out that the samplecount is short.
*/
- dslogic_abort_acquisition(devc);
+ abort_acquisition(devc);
free_transfer(transfer);
} else {
resubmit_transfer(transfer);
/* DSLogic trigger in this block. Send trigger position. */
trigger_offset = devc->trigger_pos - devc->sent_samples;
/* Pre-trigger samples. */
- dslogic_send_data(sdi, (uint8_t *)transfer->buffer,
+ send_data(sdi, (uint8_t *)transfer->buffer,
trigger_offset * unitsize, unitsize);
devc->sent_samples += trigger_offset;
/* Trigger position. */
sr_session_send(sdi, &packet);
/* Post trigger samples. */
num_samples -= trigger_offset;
- dslogic_send_data(sdi, (uint8_t *)transfer->buffer
+ send_data(sdi, (uint8_t *)transfer->buffer
+ trigger_offset * unitsize, num_samples * unitsize, unitsize);
devc->sent_samples += num_samples;
} else {
- dslogic_send_data(sdi, (uint8_t *)transfer->buffer,
+ send_data(sdi, (uint8_t *)transfer->buffer,
num_samples * unitsize, unitsize);
devc->sent_samples += num_samples;
}
}
if (devc->limit_samples && devc->sent_samples >= devc->limit_samples) {
- dslogic_abort_acquisition(devc);
+ abort_acquisition(devc);
free_transfer(transfer);
} else
resubmit_transfer(transfer);
}
-static unsigned int to_bytes_per_ms(unsigned int samplerate)
+static int receive_data(int fd, int revents, void *cb_data)
{
- return samplerate / 1000;
+ struct timeval tv;
+ struct drv_context *drvc;
+
+ (void)fd;
+ (void)revents;
+
+ drvc = (struct drv_context *)cb_data;
+
+ tv.tv_sec = tv.tv_usec = 0;
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
+
+ return TRUE;
}
-SR_PRIV size_t dslogic_get_buffer_size(struct dev_context *devc)
+static unsigned int to_bytes_per_ms(unsigned int samplerate)
{
- size_t s;
+ if (samplerate > SR_MHZ(100))
+ return SR_MHZ(100) / 1000 * 2;
+ return samplerate / 1000 * 2;
+}
+static size_t get_buffer_size(struct dev_context *devc)
+{
/*
* The buffer should be large enough to hold 10ms of data and
* a multiple of 512.
*/
- s = 10 * to_bytes_per_ms(devc->cur_samplerate);
+ const size_t s = 10 * to_bytes_per_ms(devc->cur_samplerate);
return (s + 511) & ~511;
}
-SR_PRIV unsigned int dslogic_get_timeout(struct dev_context *devc)
+static int get_number_of_transfers(struct dev_context *devc)
{
- size_t total_size;
- unsigned int timeout;
+ /* Total buffer size should be able to hold about 100ms of data. */
+ const unsigned int n = (100 * to_bytes_per_ms(devc->cur_samplerate)) /
+ get_buffer_size(devc);
+ sr_info("New calculation: %d", n);
+
+ if (n > NUM_SIMUL_TRANSFERS)
+ return NUM_SIMUL_TRANSFERS;
+
+ return n;
+}
- total_size = dslogic_get_buffer_size(devc) *
- dslogic_get_number_of_transfers(devc);
- timeout = total_size / to_bytes_per_ms(devc->cur_samplerate);
+static unsigned int get_timeout(struct dev_context *devc)
+{
+ const size_t total_size = get_buffer_size(devc) *
+ get_number_of_transfers(devc);
+ const unsigned int timeout =
+ total_size / to_bytes_per_ms(devc->cur_samplerate);
return timeout + timeout / 4; /* Leave a headroom of 25% percent. */
}
+
+static int start_transfers(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ struct libusb_transfer *transfer;
+ unsigned int i, num_transfers;
+ int timeout, ret;
+ unsigned char *buf;
+ size_t size;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ devc->sent_samples = 0;
+ devc->acq_aborted = FALSE;
+ devc->empty_transfer_count = 0;
+ devc->trigger_fired = TRUE;
+
+ num_transfers = get_number_of_transfers(devc);
+
+ if (devc->cur_samplerate == SR_MHZ(100))
+ num_transfers = 16;
+ else if (devc->cur_samplerate == SR_MHZ(200))
+ num_transfers = 8;
+ else if (devc->cur_samplerate == SR_MHZ(400))
+ num_transfers = 4;
+
+ size = get_buffer_size(devc);
+ devc->submitted_transfers = 0;
+
+ devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
+ if (!devc->transfers) {
+ sr_err("USB transfers malloc failed.");
+ return SR_ERR_MALLOC;
+ }
+
+ timeout = get_timeout(devc);
+ devc->num_transfers = num_transfers;
+ for (i = 0; i < num_transfers; i++) {
+ if (!(buf = g_try_malloc(size))) {
+ sr_err("USB transfer buffer malloc failed.");
+ return SR_ERR_MALLOC;
+ }
+ transfer = libusb_alloc_transfer(0);
+ libusb_fill_bulk_transfer(transfer, usb->devhdl,
+ 6 | LIBUSB_ENDPOINT_IN, buf, size,
+ receive_transfer, (void *)sdi, timeout);
+ sr_info("submitting transfer: %d", i);
+ if ((ret = libusb_submit_transfer(transfer)) != 0) {
+ sr_err("Failed to submit transfer: %s.",
+ libusb_error_name(ret));
+ libusb_free_transfer(transfer);
+ g_free(buf);
+ abort_acquisition(devc);
+ return SR_ERR;
+ }
+ devc->transfers[i] = transfer;
+ devc->submitted_transfers++;
+ }
+
+ std_session_send_df_header(sdi);
+
+ return SR_OK;
+}
+
+static void LIBUSB_CALL trigger_receive(struct libusb_transfer *transfer)
+{
+ const struct sr_dev_inst *sdi;
+ struct dslogic_trigger_pos *tpos;
+ struct dev_context *devc;
+
+ sdi = transfer->user_data;
+ devc = sdi->priv;
+ if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
+ sr_dbg("Trigger transfer canceled.");
+ /* Terminate session. */
+ std_session_send_df_end(sdi);
+ usb_source_remove(sdi->session, devc->ctx);
+ devc->num_transfers = 0;
+ g_free(devc->transfers);
+ } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
+ && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
+ tpos = (struct dslogic_trigger_pos *)transfer->buffer;
+ sr_info("tpos real_pos %d ram_saddr %d cnt %d", tpos->real_pos,
+ tpos->ram_saddr, tpos->remain_cnt);
+ devc->trigger_pos = tpos->real_pos;
+ g_free(tpos);
+ start_transfers(sdi);
+ }
+ libusb_free_transfer(transfer);
+}
+
+static int trigger_request(const struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+ struct libusb_transfer *transfer;
+ struct dslogic_trigger_pos *tpos;
+ struct dev_context *devc;
+ int ret;
+
+ usb = sdi->conn;
+ devc = sdi->priv;
+
+ if ((ret = command_stop_acquisition(sdi)) != SR_OK)
+ return ret;
+
+ if ((ret = fpga_configure(sdi)) != SR_OK)
+ return ret;
+
+ if ((ret = command_start_acquisition(sdi)) != SR_OK)
+ return ret;
+
+ sr_dbg("Getting trigger.");
+ tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
+ transfer = libusb_alloc_transfer(0);
+ libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
+ (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
+ trigger_receive, (void *)sdi, 0);
+ if ((ret = libusb_submit_transfer(transfer)) < 0) {
+ sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
+ libusb_free_transfer(transfer);
+ g_free(tpos);
+ return SR_ERR;
+ }
+
+ devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
+ if (!devc->transfers) {
+ sr_err("USB trigger_pos transfer malloc failed.");
+ return SR_ERR_MALLOC;
+ }
+ devc->num_transfers = 1;
+ devc->submitted_transfers++;
+ devc->transfers[0] = transfer;
+
+ return ret;
+}
+
+SR_PRIV int dslogic_acquisition_start(const struct sr_dev_inst *sdi)
+{
+ struct sr_dev_driver *di;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ int timeout;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
+
+ di = sdi->driver;
+ drvc = di->context;
+ devc = sdi->priv;
+
+ devc->ctx = drvc->sr_ctx;
+ devc->sent_samples = 0;
+ devc->empty_transfer_count = 0;
+ devc->acq_aborted = FALSE;
+
+ timeout = get_timeout(devc);
+ usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
+
+ trigger_request(sdi);
+
+ return SR_OK;
+}
+
+SR_PRIV int dslogic_acquisition_stop(struct sr_dev_inst *sdi)
+{
+ command_stop_acquisition(sdi);
+ abort_acquisition(sdi->priv);
+ return SR_OK;
+}
projects / libsigrok.git / blobdiff