+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <config.h>
-#include <assert.h>
-#include <math.h>
-#include <glib.h>
-#include <glib/gstdio.h>
-#include "protocol.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 (sizeof(uint64_t) * 8)
-#define DSLOGIC_ATOMIC_BYTES sizeof(uint64_t)
-
-/*
- * 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)
-
-struct version_info {
- uint8_t major;
- uint8_t minor;
-};
-
-struct cmd_start_acquisition {
- uint8_t flags;
- uint8_t sample_delay_h;
- 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)
-
-/*
- * 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)
-{
- int ret;
-
- ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
- LIBUSB_ENDPOINT_IN, DS_CMD_GET_FW_VERSION, 0x0000, 0x0000,
- (unsigned char *)vi, sizeof(struct version_info), USB_TIMEOUT);
-
- if (ret < 0) {
- sr_err("Unable to get version info: %s.",
- libusb_error_name(ret));
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int command_get_revid_version(struct sr_dev_inst *sdi, uint8_t *revid)
-{
- struct sr_usb_dev_inst *usb = sdi->conn;
- libusb_device_handle *devhdl = usb->devhdl;
- int ret;
-
- ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
- LIBUSB_ENDPOINT_IN, DS_CMD_GET_REVID_VERSION, 0x0000, 0x0000,
- revid, 1, USB_TIMEOUT);
-
- if (ret < 0) {
- sr_err("Unable to get REVID: %s.", libusb_error_name(ret));
- return SR_ERR;
- }
-
- 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;
-}
-
-static unsigned int enabled_channel_count(const struct sr_dev_inst *sdi)
-{
- unsigned int count = 0;
- for (const GSList *l = sdi->channels; l; l = l->next) {
- const struct sr_channel *const probe = (struct sr_channel *)l->data;
- if (probe->enabled)
- count++;
- }
- return count;
-}
-
-static uint16_t enabled_channel_mask(const struct sr_dev_inst *sdi)
-{
- unsigned int mask = 0;
- for (const GSList *l = sdi->channels; l; l = l->next) {
- const struct sr_channel *const probe = (struct sr_channel *)l->data;
- if (probe->enabled)
- mask |= 1 << probe->index;
- }
- return mask;
-}
-
-/*
- * 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;
- const unsigned int num_enabled_channels = enabled_channel_count(sdi);
- int num_trigger_stages = 0;
-
- int channelbit, i = 0;
- uint32_t trigger_point;
-
- devc = sdi->priv;
-
- cfg->ch_en = enabled_channel_mask(sdi);
-
- 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;
- struct dev_context *const devc = sdi->priv;
- const struct sr_usb_dev_inst *const usb = sdi->conn;
- const uint8_t value = (threshold / 5.0) * 255;
- const uint16_t cmd = value | (DS_ADDR_VTH << 8);
-
- /* Send the control command. */
- ret = libusb_control_transfer(usb->devhdl,
- LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT,
- DS_CMD_WR_REG, 0x0000, 0x0000,
- (unsigned char *)&cmd, sizeof(cmd), 3000);
- if (ret < 0) {
- sr_err("Unable to set voltage-threshold register: %s.",
- libusb_error_name(ret));
- return SR_ERR;
- }
-
- devc->cur_threshold = threshold;
-
- return SR_OK;
-}
-
-SR_PRIV int dslogic_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 != DSLOGIC_REQUIRED_VERSION_MAJOR) {
- sr_err("Expected firmware version %d.x, "
- "got %d.%d.", DSLOGIC_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 struct dev_context *dslogic_dev_new(void)
-{
- struct dev_context *devc;
-
- devc = g_malloc0(sizeof(struct dev_context));
- devc->profile = NULL;
- devc->fw_updated = 0;
- devc->cur_samplerate = 0;
- devc->limit_samples = 0;
- devc->capture_ratio = 0;
- devc->continuous_mode = FALSE;
- devc->clock_edge = DS_EDGE_RISING;
-
- return devc;
-}
-
-static void abort_acquisition(struct dev_context *devc)
-{
- int i;
-
- devc->acq_aborted = TRUE;
-
- for (i = devc->num_transfers - 1; i >= 0; i--) {
- if (devc->transfers[i])
- libusb_cancel_transfer(devc->transfers[i]);
- }
-}
-
-static void finish_acquisition(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
-
- devc = sdi->priv;
-
- std_session_send_df_end(sdi);
-
- usb_source_remove(sdi->session, devc->ctx);
-
- devc->num_transfers = 0;
- g_free(devc->transfers);
- g_free(devc->deinterleave_buffer);
-}
-
-static void free_transfer(struct libusb_transfer *transfer)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- unsigned int i;
-
- sdi = transfer->user_data;
- devc = sdi->priv;
-
- g_free(transfer->buffer);
- transfer->buffer = NULL;
- libusb_free_transfer(transfer);
-
- for (i = 0; i < devc->num_transfers; i++) {
- if (devc->transfers[i] == transfer) {
- devc->transfers[i] = NULL;
- break;
- }
- }
-
- devc->submitted_transfers--;
- if (devc->submitted_transfers == 0)
- finish_acquisition(sdi);
-}
-
-static void resubmit_transfer(struct libusb_transfer *transfer)
-{
- int ret;
-
- if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS)
- return;
-
- sr_err("%s: %s", __func__, libusb_error_name(ret));
- free_transfer(transfer);
-
-}
-
-static void deinterleave_buffer(const uint8_t *src, size_t length,
- uint16_t *dst_ptr, size_t channel_count, uint16_t channel_mask)
-{
- uint16_t sample;
-
- for (const uint64_t *src_ptr = (uint64_t*)src;
- src_ptr < (uint64_t*)(src + length);
- src_ptr += channel_count) {
- for (int bit = 0; bit != 64; bit++) {
- const uint64_t *word_ptr = src_ptr;
- sample = 0;
- for (size_t channel = 0; channel != channel_count;
- channel++) {
- if ((channel_mask & (1 << channel)) &&
- (*word_ptr++ & (1ULL << bit)))
- sample |= 1 << channel;
- }
- *dst_ptr++ = sample;
- }
- }
-}
-
-static void send_data(struct sr_dev_inst *sdi,
- uint16_t *data, size_t sample_count)
-{
- const struct sr_datafeed_logic logic = {
- .length = sample_count * sizeof(uint16_t),
- .unitsize = sizeof(uint16_t),
- .data = data
- };
-
- const struct sr_datafeed_packet packet = {
- .type = SR_DF_LOGIC,
- .payload = &logic
- };
-
- sr_session_send(sdi, &packet);
-}
-
-static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
-{
- struct sr_dev_inst *const sdi = transfer->user_data;
- struct dev_context *const devc = sdi->priv;
- const size_t channel_count = enabled_channel_count(sdi);
- const uint16_t channel_mask = enabled_channel_mask(sdi);
- const unsigned int cur_sample_count = DSLOGIC_ATOMIC_SAMPLES *
- transfer->actual_length /
- (DSLOGIC_ATOMIC_BYTES * channel_count);
-
- gboolean packet_has_error = FALSE;
- struct sr_datafeed_packet packet;
- unsigned int num_samples;
- int trigger_offset;
-
- /*
- * If acquisition has already ended, just free any queued up
- * transfer that come in.
- */
- if (devc->acq_aborted) {
- free_transfer(transfer);
- return;
- }
-
- sr_dbg("receive_transfer(): status %s received %d bytes.",
- libusb_error_name(transfer->status), transfer->actual_length);
-
- /* Save incoming transfer before reusing the transfer struct. */
-
- switch (transfer->status) {
- case LIBUSB_TRANSFER_NO_DEVICE:
- abort_acquisition(devc);
- 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 (transfer->actual_length == 0 || packet_has_error) {
- devc->empty_transfer_count++;
- if (devc->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(devc);
- free_transfer(transfer);
- } else {
- resubmit_transfer(transfer);
- }
- return;
- } else {
- devc->empty_transfer_count = 0;
- }
-
- if (!devc->limit_samples || devc->sent_samples < devc->limit_samples) {
- if (devc->limit_samples && devc->sent_samples + cur_sample_count > devc->limit_samples)
- num_samples = devc->limit_samples - devc->sent_samples;
- else
- num_samples = cur_sample_count;
-
- /**
- * The DSLogic emits sample data as sequences of 64-bit sample words
- * in a round-robin i.e. 64-bits from channel 0, 64-bits from channel 1
- * etc. for each of the enabled channels, then looping back to the
- * channel.
- *
- * Because sigrok's internal representation is bit-interleaved channels
- * we must recast the data.
- *
- * Hopefully in future it will be possible to pass the data on as-is.
- */
- assert(transfer->actual_length % (DSLOGIC_ATOMIC_BYTES * channel_count) == 0);
- deinterleave_buffer(transfer->buffer, transfer->actual_length,
- devc->deinterleave_buffer, channel_count, channel_mask);
-
- /* Send the incoming transfer to the session bus. */
- if (devc->trigger_pos > devc->sent_samples
- && devc->trigger_pos <= devc->sent_samples + num_samples) {
- /* DSLogic trigger in this block. Send trigger position. */
- trigger_offset = devc->trigger_pos - devc->sent_samples;
- /* Pre-trigger samples. */
- send_data(sdi, devc->deinterleave_buffer, trigger_offset);
- devc->sent_samples += trigger_offset;
- /* Trigger position. */
- devc->trigger_pos = 0;
- packet.type = SR_DF_TRIGGER;
- packet.payload = NULL;
- sr_session_send(sdi, &packet);
- /* Post trigger samples. */
- num_samples -= trigger_offset;
- send_data(sdi, devc->deinterleave_buffer
- + trigger_offset, num_samples);
- devc->sent_samples += num_samples;
- } else {
- send_data(sdi, devc->deinterleave_buffer, num_samples);
- devc->sent_samples += num_samples;
- }
- }
-
- if (devc->limit_samples && devc->sent_samples >= devc->limit_samples) {
- abort_acquisition(devc);
- free_transfer(transfer);
- } else
- resubmit_transfer(transfer);
-}
-
-static int receive_data(int fd, int revents, void *cb_data)
-{
- 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;
-}
-
-static size_t to_bytes_per_ms(const struct sr_dev_inst *sdi)
-{
- const struct dev_context *const devc = sdi->priv;
- const size_t ch_count = enabled_channel_count(sdi);
-
- if (devc->continuous_mode)
- return (devc->cur_samplerate * ch_count) / (1000 * 8);
-
-
- /* If we're in buffered mode, the transfer rate is not so important,
- * but we expect to get at least 10% of the high-speed USB bandwidth.
- */
- return 35000000 / (1000 * 10);
-}
-
-static size_t get_buffer_size(const struct sr_dev_inst *sdi)
-{
- /*
- * The buffer should be large enough to hold 10ms of data and
- * a multiple of the size of a data atom.
- */
- const size_t block_size = enabled_channel_count(sdi) * 512;
- const size_t s = 10 * to_bytes_per_ms(sdi);
- return ((s + block_size - 1) / block_size) * block_size;
-}
-
-static unsigned int get_number_of_transfers(const struct sr_dev_inst *sdi)
-{
- /* Total buffer size should be able to hold about 100ms of data. */
- const unsigned int s = get_buffer_size(sdi);
- const unsigned int n = (100 * to_bytes_per_ms(sdi) + s - 1) / s;
- return (n > NUM_SIMUL_TRANSFERS) ? NUM_SIMUL_TRANSFERS : n;
-}
-
-static unsigned int get_timeout(const struct sr_dev_inst *sdi)
-{
- const size_t total_size = get_buffer_size(sdi) *
- get_number_of_transfers(sdi);
- const unsigned int timeout = total_size / to_bytes_per_ms(sdi);
- return timeout + timeout / 4; /* Leave a headroom of 25% percent. */
-}
-
-static int start_transfers(const struct sr_dev_inst *sdi)
-{
- const size_t channel_count = enabled_channel_count(sdi);
- const size_t size = get_buffer_size(sdi);
- const unsigned int num_transfers = get_number_of_transfers(sdi);
- const unsigned int timeout = get_timeout(sdi);
-
- struct dev_context *devc;
- struct sr_usb_dev_inst *usb;
- struct libusb_transfer *transfer;
- unsigned int i;
- int ret;
- unsigned char *buf;
-
- devc = sdi->priv;
- usb = sdi->conn;
-
- devc->sent_samples = 0;
- devc->acq_aborted = FALSE;
- devc->empty_transfer_count = 0;
- devc->submitted_transfers = 0;
-
- g_free(devc->transfers);
- devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
- if (!devc->transfers) {
- sr_err("USB transfers malloc failed.");
- return SR_ERR_MALLOC;
- }
-
- devc->deinterleave_buffer = g_try_malloc(DSLOGIC_ATOMIC_SAMPLES *
- (size / (channel_count * DSLOGIC_ATOMIC_BYTES)) * sizeof(uint16_t));
- if (!devc->deinterleave_buffer) {
- sr_err("Deinterleave buffer malloc failed.");
- g_free(devc->deinterleave_buffer);
- return SR_ERR_MALLOC;
- }
-
- 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);
-}
-
-SR_PRIV int dslogic_acquisition_start(const struct sr_dev_inst *sdi)
-{
- const unsigned int timeout = get_timeout(sdi);
-
- struct sr_dev_driver *di;
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_usb_dev_inst *usb;
- struct dslogic_trigger_pos *tpos;
- struct libusb_transfer *transfer;
- int ret;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- di = sdi->driver;
- drvc = di->context;
- devc = sdi->priv;
- usb = sdi->conn;
-
- devc->ctx = drvc->sr_ctx;
- devc->sent_samples = 0;
- devc->empty_transfer_count = 0;
- devc->acq_aborted = FALSE;
-
- usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
-
- 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_stop(struct sr_dev_inst *sdi)
-{
- command_stop_acquisition(sdi);
- abort_acquisition(sdi->priv);
- return SR_OK;
-}
projects / libsigrok.git / blobdiff