--- /dev/null
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2016 Eva Kissling <eva.kissling@bluewin.ch>
+ *
+ * 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>
+
+#ifdef _WIN32
+#define _WIN32_WINNT 0x0501
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <sys/ioctl.h>
+#endif
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include "protocol.h"
+
+#define BUFFER_SIZE 4
+
+/* Top-level command opcodes */
+#define CMD_SET_TRIGGER 0x00
+#define CMD_CFG_TRIGGER 0xF0
+#define CMD_CFG_LA 0x0F
+#define CMD_START 0xFE
+#define CMD_RESET 0xEE
+
+#define CMD_GET_BUS_WIDTHS 0xAA
+#define CMD_GET_LA_ID 0xBB
+#define CMD_ESCAPE 0x55
+
+/* Trigger subfunction command opcodes */
+#define CMD_TRIG_MASKS 0xF1
+#define CMD_TRIG_MASK 0xF3
+#define CMD_TRIG_VALUE 0xF7
+
+#define CMD_TRIG_MASKS_LAST 0xF9
+#define CMD_TRIG_MASK_LAST 0xFB
+#define CMD_TRIG_VALUE_LAST 0xFF
+
+#define CMD_TRIG_SELECT_EDGE_MASK 0xF5
+#define CMD_TRIG_SET_EDGE_MASK 0xF6
+
+/* LA subfunction command opcodes */
+#define CMD_LA_DELAY 0x1F
+
+static gboolean data_available(struct ipdbg_la_tcp *tcp)
+{
+#ifdef _WIN32
+ u_long bytes_available;
+ ioctlsocket(tcp->socket, FIONREAD, &bytes_available);
+ return (bytes_available > 0);
+#else
+ int status;
+
+ if (ioctl(tcp->socket, FIONREAD, &status) < 0) { // TIOCMGET
+ sr_err("FIONREAD failed: %s\n", g_strerror(errno));
+ return FALSE;
+ }
+
+ return (status < 1) ? FALSE : TRUE;
+#endif
+}
+
+SR_PRIV struct ipdbg_la_tcp *ipdbg_la_tcp_new(void)
+{
+ struct ipdbg_la_tcp *tcp;
+
+ tcp = g_malloc0(sizeof(struct ipdbg_la_tcp));
+ tcp->address = NULL;
+ tcp->port = NULL;
+ tcp->socket = -1;
+
+ return tcp;
+}
+
+SR_PRIV void ipdbg_la_tcp_free(struct ipdbg_la_tcp *tcp)
+{
+ g_free(tcp->address);
+ g_free(tcp->port);
+}
+
+SR_PRIV int ipdbg_la_tcp_open(struct ipdbg_la_tcp *tcp)
+{
+ struct addrinfo hints;
+ struct addrinfo *results, *res;
+ int err;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_TCP;
+
+ err = getaddrinfo(tcp->address, tcp->port, &hints, &results);
+
+ if (err) {
+ sr_err("Address lookup failed: %s:%s: %s", tcp->address,
+ tcp->port, gai_strerror(err));
+ return SR_ERR;
+ }
+
+ for (res = results; res; res = res->ai_next) {
+ if ((tcp->socket = socket(res->ai_family, res->ai_socktype,
+ res->ai_protocol)) < 0)
+ continue;
+ if (connect(tcp->socket, res->ai_addr, res->ai_addrlen) != 0) {
+ close(tcp->socket);
+ tcp->socket = -1;
+ continue;
+ }
+ break;
+ }
+
+ freeaddrinfo(results);
+
+ if (tcp->socket < 0) {
+ sr_err("Failed to connect to %s:%s: %s", tcp->address, tcp->port,
+ g_strerror(errno));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int ipdbg_la_tcp_close(struct ipdbg_la_tcp *tcp)
+{
+ int ret = SR_OK;
+
+ if (close(tcp->socket) < 0)
+ ret = SR_ERR;
+
+ tcp->socket = -1;
+
+ return ret;
+}
+
+static int tcp_send(struct ipdbg_la_tcp *tcp, const uint8_t *buf, size_t len)
+{
+ int out;
+ out = send(tcp->socket, (const char *)buf, len, 0);
+
+ if (out < 0) {
+ sr_err("Send error: %s", g_strerror(errno));
+ return SR_ERR;
+ }
+
+ if (out < (int)len)
+ sr_dbg("Only sent %d/%d bytes of data.", out, (int)len);
+
+ return SR_OK;
+}
+
+static int tcp_receive_blocking(struct ipdbg_la_tcp *tcp,
+ uint8_t *buf, int bufsize)
+{
+ int received = 0;
+ int error_count = 0;
+
+ /* Timeout after 500ms of not receiving data */
+ while ((received < bufsize) && (error_count < 500)) {
+ if (ipdbg_la_tcp_receive(tcp, buf) > 0) {
+ buf++;
+ received++;
+ } else {
+ error_count++;
+ g_usleep(1000); /* Sleep for 1ms */
+ }
+ }
+
+ return received;
+}
+
+SR_PRIV int ipdbg_la_tcp_receive(struct ipdbg_la_tcp *tcp,
+ uint8_t *buf)
+{
+ int received = 0;
+
+ if (data_available(tcp)) {
+ while (received < 1) {
+ int len = recv(tcp->socket, (char *)buf, 1, 0);
+
+ if (len < 0) {
+ sr_err("Receive error: %s", g_strerror(errno));
+ return SR_ERR;
+ } else
+ received += len;
+ }
+
+ return received;
+ } else
+ return -1;
+}
+
+SR_PRIV int ipdbg_la_convert_trigger(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_trigger *trigger;
+ struct sr_trigger_stage *stage;
+ struct sr_trigger_match *match;
+ const GSList *l, *m;
+
+ devc = sdi->priv;
+
+ devc->num_stages = 0;
+ devc->num_transfers = 0;
+ devc->raw_sample_buf = NULL;
+
+ for (uint64_t i = 0; i < devc->data_width_bytes; i++) {
+ devc->trigger_mask[i] = 0;
+ devc->trigger_value[i] = 0;
+ devc->trigger_mask_last[i] = 0;
+ devc->trigger_value_last[i] = 0;
+ devc->trigger_edge_mask[i] = 0;
+ }
+
+ if (!(trigger = sr_session_trigger_get(sdi->session)))
+ return SR_OK;
+
+ for (l = trigger->stages; l; l = l->next) {
+ stage = l->data;
+ for (m = stage->matches; m; m = m->next) {
+ match = m->data;
+ int byte_idx = match->channel->index / 8;
+ uint8_t match_bit = 1 << (match->channel->index % 8);
+
+ if (!match->channel->enabled)
+ /* Ignore disabled channels with a trigger. */
+ continue;
+
+ if (match->match == SR_TRIGGER_ONE) {
+ devc->trigger_value[byte_idx] |= match_bit;
+ devc->trigger_mask[byte_idx] |= match_bit;
+ devc->trigger_mask_last[byte_idx] &= ~match_bit;
+ devc->trigger_edge_mask[byte_idx] &= ~match_bit;
+ } else if (match->match == SR_TRIGGER_ZERO) {
+ devc->trigger_value[byte_idx] &= ~match_bit;
+ devc->trigger_mask[byte_idx] |= match_bit;
+ devc->trigger_mask_last[byte_idx] &= ~match_bit;
+ devc->trigger_edge_mask[byte_idx] &= ~match_bit;
+ } else if (match->match == SR_TRIGGER_RISING) {
+ devc->trigger_value[byte_idx] |= match_bit;
+ devc->trigger_value_last[byte_idx] &=
+ ~match_bit;
+ devc->trigger_mask[byte_idx] |= match_bit;
+ devc->trigger_mask_last[byte_idx] |= match_bit;
+ devc->trigger_edge_mask[byte_idx] &= ~match_bit;
+ } else if (match->match == SR_TRIGGER_FALLING) {
+ devc->trigger_value[byte_idx] &= ~match_bit;
+ devc->trigger_value_last[byte_idx] |= match_bit;
+ devc->trigger_mask[byte_idx] |= match_bit;
+ devc->trigger_mask_last[byte_idx] |= match_bit;
+ devc->trigger_edge_mask[byte_idx] &= ~match_bit;
+ } else if (match->match == SR_TRIGGER_EDGE) {
+ devc->trigger_mask[byte_idx] &= ~match_bit;
+ devc->trigger_mask_last[byte_idx] &= ~match_bit;
+ devc->trigger_edge_mask[byte_idx] |= match_bit;
+ }
+ }
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int ipdbg_la_receive_data(int fd, int revents, void *cb_data)
+{
+ const struct sr_dev_inst *sdi;
+ struct dev_context *devc;
+
+ (void)fd;
+ (void)revents;
+
+ sdi = cb_data;
+ if (!sdi)
+ return FALSE;
+
+ if (!(devc = sdi->priv))
+ return FALSE;
+
+ struct ipdbg_la_tcp *tcp = sdi->conn;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_logic logic;
+
+ if (!devc->raw_sample_buf) {
+ devc->raw_sample_buf =
+ g_try_malloc(devc->limit_samples * devc->data_width_bytes);
+ if (!devc->raw_sample_buf) {
+ sr_err("Sample buffer malloc failed.");
+ return FALSE;
+ }
+ }
+
+ if (devc->num_transfers <
+ (devc->limit_samples_max * devc->data_width_bytes)) {
+ uint8_t byte;
+
+ if (ipdbg_la_tcp_receive(tcp, &byte) == 1) {
+ if (devc->num_transfers <
+ (devc->limit_samples * devc->data_width_bytes))
+ devc->raw_sample_buf[devc->num_transfers] = byte;
+
+ devc->num_transfers++;
+ }
+ } else {
+ if (devc->delay_value > 0) {
+ /* There are pre-trigger samples, send those first. */
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = devc->delay_value * devc->data_width_bytes;
+ logic.unitsize = devc->data_width_bytes;
+ logic.data = devc->raw_sample_buf;
+ sr_session_send(cb_data, &packet);
+ }
+
+ /* Send the trigger. */
+ packet.type = SR_DF_TRIGGER;
+ sr_session_send(cb_data, &packet);
+
+ /* Send post-trigger samples. */
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = (devc->limit_samples - devc->delay_value) *
+ devc->data_width_bytes;
+ logic.unitsize = devc->data_width_bytes;
+ logic.data = devc->raw_sample_buf +
+ (devc->delay_value * devc->data_width_bytes);
+ sr_session_send(cb_data, &packet);
+
+ g_free(devc->raw_sample_buf);
+ devc->raw_sample_buf = NULL;
+
+ ipdbg_la_abort_acquisition(sdi);
+ }
+
+ return TRUE;
+}
+
+static int send_escaping(struct ipdbg_la_tcp *tcp, uint8_t *data_to_send,
+ uint32_t length)
+{
+ uint8_t escape = CMD_ESCAPE;
+
+ while (length--) {
+ uint8_t payload = *data_to_send++;
+
+ if (payload == CMD_RESET)
+ if (tcp_send(tcp, &escape, 1) != SR_OK)
+ sr_warn("Couldn't send escape");
+
+ if (payload == CMD_ESCAPE)
+ if (tcp_send(tcp, &escape, 1) != SR_OK)
+ sr_warn("Couldn't send escape");
+
+ if (tcp_send(tcp, &payload, 1) != SR_OK)
+ sr_warn("Couldn't send data");
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int ipdbg_la_send_delay(struct dev_context *devc,
+ struct ipdbg_la_tcp *tcp)
+{
+ devc->delay_value = (devc->limit_samples / 100.0) * devc->capture_ratio;
+
+ uint8_t buf;
+ buf = CMD_CFG_LA;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_LA_DELAY;
+ tcp_send(tcp, &buf, 1);
+
+ uint8_t delay_buf[4] = { devc->delay_value & 0x000000ff,
+ (devc->delay_value >> 8) & 0x000000ff,
+ (devc->delay_value >> 16) & 0x000000ff,
+ (devc->delay_value >> 24) & 0x000000ff
+ };
+
+ for (uint64_t i = 0; i < devc->addr_width_bytes; i++)
+ send_escaping(tcp, &(delay_buf[devc->addr_width_bytes - 1 - i]), 1);
+
+ return SR_OK;
+}
+
+SR_PRIV int ipdbg_la_send_trigger(struct dev_context *devc,
+ struct ipdbg_la_tcp *tcp)
+{
+ uint8_t buf;
+
+ /* Mask */
+ buf = CMD_CFG_TRIGGER;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_MASKS;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_MASK;
+ tcp_send(tcp, &buf, 1);
+
+ for (size_t i = 0; i < devc->data_width_bytes; i++)
+ send_escaping(tcp,
+ devc->trigger_mask + devc->data_width_bytes - 1 - i, 1);
+
+ /* Value */
+ buf = CMD_CFG_TRIGGER;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_MASKS;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_VALUE;
+ tcp_send(tcp, &buf, 1);
+
+ for (size_t i = 0; i < devc->data_width_bytes; i++)
+ send_escaping(tcp,
+ devc->trigger_value + devc->data_width_bytes - 1 - i, 1);
+
+ /* Mask_last */
+ buf = CMD_CFG_TRIGGER;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_MASKS_LAST;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_MASK_LAST;
+ tcp_send(tcp, &buf, 1);
+
+ for (size_t i = 0; i < devc->data_width_bytes; i++)
+ send_escaping(tcp,
+ devc->trigger_mask_last + devc->data_width_bytes - 1 - i, 1);
+
+ /* Value_last */
+ buf = CMD_CFG_TRIGGER;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_MASKS_LAST;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_VALUE_LAST;
+ tcp_send(tcp, &buf, 1);
+
+ for (size_t i = 0; i < devc->data_width_bytes; i++)
+ send_escaping(tcp,
+ devc->trigger_value_last + devc->data_width_bytes - 1 - i, 1);
+
+ /* Edge_mask */
+ buf = CMD_CFG_TRIGGER;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_SELECT_EDGE_MASK;
+ tcp_send(tcp, &buf, 1);
+ buf = CMD_TRIG_SET_EDGE_MASK;
+ tcp_send(tcp, &buf, 1);
+
+ for (size_t i = 0; i < devc->data_width_bytes; i++)
+ send_escaping(tcp,
+ devc->trigger_edge_mask + devc->data_width_bytes - 1 - i, 1);
+
+ return SR_OK;
+}
+
+SR_PRIV void ipdbg_la_get_addrwidth_and_datawidth(
+ struct ipdbg_la_tcp *tcp, struct dev_context *devc)
+{
+ uint8_t buf[8];
+ uint8_t read_cmd = CMD_GET_BUS_WIDTHS;
+
+ if (tcp_send(tcp, &read_cmd, 1) != SR_OK)
+ sr_warn("Can't send read command");
+
+ if (tcp_receive_blocking(tcp, buf, 8) != 8)
+ sr_warn("Can't get address and data width from device");
+
+ devc->data_width = buf[0] & 0x000000FF;
+ devc->data_width |= (buf[1] << 8) & 0x0000FF00;
+ devc->data_width |= (buf[2] << 16) & 0x00FF0000;
+ devc->data_width |= (buf[3] << 24) & 0xFF000000;
+
+ devc->addr_width = buf[4] & 0x000000FF;
+ devc->addr_width |= (buf[5] << 8) & 0x0000FF00;
+ devc->addr_width |= (buf[6] << 16) & 0x00FF0000;
+ devc->addr_width |= (buf[7] << 24) & 0xFF000000;
+
+ const uint8_t host_word_size = 8;
+
+ devc->data_width_bytes =
+ (devc->data_width + host_word_size - 1) / host_word_size;
+ devc->addr_width_bytes =
+ (devc->addr_width + host_word_size - 1) / host_word_size;
+
+ devc->limit_samples_max = (0x01 << devc->addr_width);
+ devc->limit_samples = devc->limit_samples_max;
+
+ devc->trigger_mask = g_malloc0(devc->data_width_bytes);
+ devc->trigger_value = g_malloc0(devc->data_width_bytes);
+ devc->trigger_mask_last = g_malloc0(devc->data_width_bytes);
+ devc->trigger_value_last = g_malloc0(devc->data_width_bytes);
+ devc->trigger_edge_mask = g_malloc0(devc->data_width_bytes);
+}
+
+SR_PRIV struct dev_context *ipdbg_la_dev_new(void)
+{
+ struct dev_context *devc;
+
+ devc = g_malloc0(sizeof(struct dev_context));
+ devc->capture_ratio = 50;
+
+ return devc;
+}
+
+SR_PRIV int ipdbg_la_send_reset(struct ipdbg_la_tcp *tcp)
+{
+ uint8_t buf = CMD_RESET;
+ if (tcp_send(tcp, &buf, 1) != SR_OK)
+ sr_warn("Couldn't send reset");
+
+ return SR_OK;
+}
+
+SR_PRIV int ipdbg_la_request_id(struct ipdbg_la_tcp *tcp)
+{
+ uint8_t buf = CMD_GET_LA_ID;
+ if (tcp_send(tcp, &buf, 1) != SR_OK)
+ sr_warn("Couldn't send ID request");
+
+ char id[4];
+ if (tcp_receive_blocking(tcp, (uint8_t *)id, 4) != 4) {
+ sr_err("Couldn't read device ID");
+ return SR_ERR;
+ }
+
+ if (strncmp(id, "IDBG", 4)) {
+ sr_err("Invalid device ID: expected 'IDBG', got '%c%c%c%c'.",
+ id[0], id[1], id[2], id[3]);
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV void ipdbg_la_abort_acquisition(const struct sr_dev_inst *sdi)
+{
+ struct ipdbg_la_tcp *tcp = sdi->conn;
+
+ sr_session_source_remove(sdi->session, tcp->socket);
+
+ std_session_send_df_end(sdi);
+}
+
+SR_PRIV int ipdbg_la_send_start(struct ipdbg_la_tcp *tcp)
+{
+ uint8_t buf = CMD_START;
+
+ if (tcp_send(tcp, &buf, 1) != SR_OK)
+ sr_warn("Couldn't send start");
+
+ return SR_OK;
+}
projects / libsigrok.git / blobdiff