X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fopenbench-logic-sniffer%2Fprotocol.c;h=0d6efeb85a89fd41d2a21dd81ee3aa400e4c664c;hb=HEAD;hp=43f9f45cdb89a03920519822dc27ffcf67233601;hpb=0f75d6f5a9b5d9d479dc03d67a8c828f99dce8f0;p=libsigrok.git diff --git a/hardware/openbench-logic-sniffer/protocol.c b/hardware/openbench-logic-sniffer/protocol.c deleted file mode 100644 index 43f9f45c..00000000 --- a/hardware/openbench-logic-sniffer/protocol.c +++ /dev/null @@ -1,514 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2013 Bert Vermeulen - * - * 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 . - */ - -#include "protocol.h" - -extern SR_PRIV struct sr_dev_driver ols_driver_info; -static struct sr_dev_driver *di = &ols_driver_info; - -SR_PRIV int send_shortcommand(struct sr_serial_dev_inst *serial, - uint8_t command) -{ - char buf[1]; - - sr_dbg("Sending cmd 0x%.2x.", command); - buf[0] = command; - if (serial_write(serial, buf, 1) != 1) - return SR_ERR; - - return SR_OK; -} - -SR_PRIV int send_longcommand(struct sr_serial_dev_inst *serial, - uint8_t command, uint32_t data) -{ - char buf[5]; - - sr_dbg("Sending cmd 0x%.2x data 0x%.8x.", command, data); - buf[0] = command; - buf[1] = (data & 0xff000000) >> 24; - buf[2] = (data & 0xff0000) >> 16; - buf[3] = (data & 0xff00) >> 8; - buf[4] = data & 0xff; - if (serial_write(serial, buf, 5) != 5) - return SR_ERR; - - return SR_OK; -} - -SR_PRIV int ols_configure_probes(const struct sr_dev_inst *sdi) -{ - struct dev_context *devc; - const struct sr_probe *probe; - const GSList *l; - int probe_bit, stage, i; - char *tc; - - devc = sdi->priv; - - devc->probe_mask = 0; - for (i = 0; i < NUM_TRIGGER_STAGES; i++) { - devc->trigger_mask[i] = 0; - devc->trigger_value[i] = 0; - } - - devc->num_stages = 0; - for (l = sdi->probes; l; l = l->next) { - probe = (const struct sr_probe *)l->data; - if (!probe->enabled) - continue; - - /* - * Set up the probe mask for later configuration into the - * flag register. - */ - probe_bit = 1 << (probe->index); - devc->probe_mask |= probe_bit; - - if (!probe->trigger) - continue; - - /* Configure trigger mask and value. */ - stage = 0; - for (tc = probe->trigger; tc && *tc; tc++) { - devc->trigger_mask[stage] |= probe_bit; - if (*tc == '1') - devc->trigger_value[stage] |= probe_bit; - stage++; - if (stage > 3) - /* - * TODO: Only supporting parallel mode, with - * up to 4 stages. - */ - return SR_ERR; - } - if (stage > devc->num_stages) - devc->num_stages = stage; - } - - return SR_OK; -} - -SR_PRIV uint32_t reverse16(uint32_t in) -{ - uint32_t out; - - out = (in & 0xff) << 8; - out |= (in & 0xff00) >> 8; - out |= (in & 0xff0000) << 8; - out |= (in & 0xff000000) >> 8; - - return out; -} - -SR_PRIV uint32_t reverse32(uint32_t in) -{ - uint32_t out; - - out = (in & 0xff) << 24; - out |= (in & 0xff00) << 8; - out |= (in & 0xff0000) >> 8; - out |= (in & 0xff000000) >> 24; - - return out; -} - -SR_PRIV struct dev_context *ols_dev_new(void) -{ - struct dev_context *devc; - - if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { - sr_err("Device context malloc failed."); - return NULL; - } - - /* Device-specific settings */ - devc->max_samples = devc->max_samplerate = devc->protocol_version = 0; - - /* Acquisition settings */ - devc->limit_samples = devc->capture_ratio = 0; - devc->trigger_at = -1; - devc->probe_mask = 0xffffffff; - devc->flag_reg = 0; - - return devc; -} - -SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial) -{ - struct sr_dev_inst *sdi; - struct dev_context *devc; - struct sr_probe *probe; - uint32_t tmp_int, ui; - uint8_t key, type, token; - GString *tmp_str, *devname, *version; - guchar tmp_c; - - sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, NULL, NULL, NULL); - sdi->driver = di; - devc = ols_dev_new(); - sdi->priv = devc; - - devname = g_string_new(""); - version = g_string_new(""); - - key = 0xff; - while (key) { - if (serial_read(serial, &key, 1) != 1 || key == 0x00) - break; - type = key >> 5; - token = key & 0x1f; - switch (type) { - case 0: - /* NULL-terminated string */ - tmp_str = g_string_new(""); - while (serial_read(serial, &tmp_c, 1) == 1 && tmp_c != '\0') - g_string_append_c(tmp_str, tmp_c); - sr_dbg("Got metadata key 0x%.2x value '%s'.", - key, tmp_str->str); - switch (token) { - case 0x01: - /* Device name */ - devname = g_string_append(devname, tmp_str->str); - break; - case 0x02: - /* FPGA firmware version */ - if (version->len) - g_string_append(version, ", "); - g_string_append(version, "FPGA version "); - g_string_append(version, tmp_str->str); - break; - case 0x03: - /* Ancillary version */ - if (version->len) - g_string_append(version, ", "); - g_string_append(version, "Ancillary version "); - g_string_append(version, tmp_str->str); - break; - default: - sr_info("ols: unknown token 0x%.2x: '%s'", - token, tmp_str->str); - break; - } - g_string_free(tmp_str, TRUE); - break; - case 1: - /* 32-bit unsigned integer */ - if (serial_read(serial, &tmp_int, 4) != 4) - break; - tmp_int = reverse32(tmp_int); - sr_dbg("Got metadata key 0x%.2x value 0x%.8x.", - key, tmp_int); - switch (token) { - case 0x00: - /* Number of usable probes */ - for (ui = 0; ui < tmp_int; ui++) { - if (!(probe = sr_probe_new(ui, SR_PROBE_LOGIC, TRUE, - ols_probe_names[ui]))) - return 0; - sdi->probes = g_slist_append(sdi->probes, probe); - } - break; - case 0x01: - /* Amount of sample memory available (bytes) */ - devc->max_samples = tmp_int; - break; - case 0x02: - /* Amount of dynamic memory available (bytes) */ - /* what is this for? */ - break; - case 0x03: - /* Maximum sample rate (hz) */ - devc->max_samplerate = tmp_int; - break; - case 0x04: - /* protocol version */ - devc->protocol_version = tmp_int; - break; - default: - sr_info("Unknown token 0x%.2x: 0x%.8x.", - token, tmp_int); - break; - } - break; - case 2: - /* 8-bit unsigned integer */ - if (serial_read(serial, &tmp_c, 1) != 1) - break; - sr_dbg("Got metadata key 0x%.2x value 0x%.2x.", - key, tmp_c); - switch (token) { - case 0x00: - /* Number of usable probes */ - for (ui = 0; ui < tmp_c; ui++) { - if (!(probe = sr_probe_new(ui, SR_PROBE_LOGIC, TRUE, - ols_probe_names[ui]))) - return 0; - sdi->probes = g_slist_append(sdi->probes, probe); - } - break; - case 0x01: - /* protocol version */ - devc->protocol_version = tmp_c; - break; - default: - sr_info("Unknown token 0x%.2x: 0x%.2x.", - token, tmp_c); - break; - } - break; - default: - /* unknown type */ - break; - } - } - - sdi->model = devname->str; - sdi->version = version->str; - g_string_free(devname, FALSE); - g_string_free(version, FALSE); - - return sdi; -} - -SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi, - const uint64_t samplerate) -{ - struct dev_context *devc; - - devc = sdi->priv; - if (devc->max_samplerate && samplerate > devc->max_samplerate) - return SR_ERR_SAMPLERATE; - - if (samplerate > CLOCK_RATE) { - devc->flag_reg |= FLAG_DEMUX; - devc->cur_samplerate_divider = (CLOCK_RATE * 2 / samplerate) - 1; - } else { - devc->flag_reg &= ~FLAG_DEMUX; - devc->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1; - } - - /* Calculate actual samplerate used and complain if it is different - * from the requested. - */ - devc->cur_samplerate = CLOCK_RATE / (devc->cur_samplerate_divider + 1); - if (devc->flag_reg & FLAG_DEMUX) - devc->cur_samplerate *= 2; - if (devc->cur_samplerate != samplerate) - sr_info("Can't match samplerate %" PRIu64 ", using %" - PRIu64 ".", samplerate, devc->cur_samplerate); - - return SR_OK; -} - -SR_PRIV void abort_acquisition(const struct sr_dev_inst *sdi) -{ - struct sr_datafeed_packet packet; - struct sr_serial_dev_inst *serial; - - serial = sdi->conn; - sr_source_remove(serial->fd); - - /* Terminate session */ - packet.type = SR_DF_END; - sr_session_send(sdi, &packet); -} - -SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) -{ - struct drv_context *drvc; - struct dev_context *devc; - struct sr_serial_dev_inst *serial; - struct sr_datafeed_packet packet; - struct sr_datafeed_logic logic; - struct sr_dev_inst *sdi; - GSList *l; - uint32_t sample; - int num_channels, offset, i, j; - unsigned char byte; - - drvc = di->priv; - - /* Find this device's devc struct by its fd. */ - devc = NULL; - for (l = drvc->instances; l; l = l->next) { - sdi = l->data; - devc = sdi->priv; - serial = sdi->conn; - if (serial->fd == fd) - break; - devc = NULL; - } - if (!devc) - /* Shouldn't happen. */ - return TRUE; - - if (devc->num_transfers++ == 0) { - /* - * First time round, means the device started sending data, - * and will not stop until done. If it stops sending for - * longer than it takes to send a byte, that means it's - * finished. We'll double that to 30ms to be sure... - */ - sr_source_remove(fd); - sr_source_add(fd, G_IO_IN, 30, ols_receive_data, cb_data); - devc->raw_sample_buf = g_try_malloc(devc->limit_samples * 4); - if (!devc->raw_sample_buf) { - sr_err("Sample buffer malloc failed."); - return FALSE; - } - /* fill with 1010... for debugging */ - memset(devc->raw_sample_buf, 0x82, devc->limit_samples * 4); - } - - num_channels = 0; - for (i = 0x20; i > 0x02; i /= 2) { - if ((devc->flag_reg & i) == 0) - num_channels++; - } - - if (revents == G_IO_IN) { - if (serial_read(serial, &byte, 1) != 1) - return FALSE; - - /* Ignore it if we've read enough. */ - if (devc->num_samples >= devc->limit_samples) - return TRUE; - - devc->sample[devc->num_bytes++] = byte; - sr_dbg("Received byte 0x%.2x.", byte); - if (devc->num_bytes == num_channels) { - /* Got a full sample. */ - sample = devc->sample[0] | (devc->sample[1] << 8) \ - | (devc->sample[2] << 16) | (devc->sample[3] << 24); - sr_dbg("Received sample 0x%.*x.", devc->num_bytes * 2, sample); - if (devc->flag_reg & FLAG_RLE) { - /* - * In RLE mode -1 should never come in as a - * sample, because bit 31 is the "count" flag. - */ - if (devc->sample[devc->num_bytes - 1] & 0x80) { - devc->sample[devc->num_bytes - 1] &= 0x7f; - /* - * FIXME: This will only work on - * little-endian systems. - */ - devc->rle_count = sample; - sr_dbg("RLE count: %d.", devc->rle_count); - devc->num_bytes = 0; - return TRUE; - } - } - devc->num_samples += devc->rle_count + 1; - if (devc->num_samples > devc->limit_samples) { - /* Save us from overrunning the buffer. */ - devc->rle_count -= devc->num_samples - devc->limit_samples; - devc->num_samples = devc->limit_samples; - } - - if (num_channels < 4) { - /* - * Some channel groups may have been turned - * off, to speed up transfer between the - * hardware and the PC. Expand that here before - * submitting it over the session bus -- - * whatever is listening on the bus will be - * expecting a full 32-bit sample, based on - * the number of probes. - */ - j = 0; - memset(devc->tmp_sample, 0, 4); - for (i = 0; i < 4; i++) { - if (((devc->flag_reg >> 2) & (1 << i)) == 0) { - /* - * This channel group was - * enabled, copy from received - * sample. - */ - devc->tmp_sample[i] = devc->sample[j++]; - } - } - memcpy(devc->sample, devc->tmp_sample, 4); - sr_dbg("Full sample: 0x%.8x.", sample); - } - - /* the OLS sends its sample buffer backwards. - * store it in reverse order here, so we can dump - * this on the session bus later. - */ - offset = (devc->limit_samples - devc->num_samples) * 4; - for (i = 0; i <= devc->rle_count; i++) { - memcpy(devc->raw_sample_buf + offset + (i * 4), - devc->sample, 4); - } - memset(devc->sample, 0, 4); - devc->num_bytes = 0; - devc->rle_count = 0; - } - } else { - /* - * This is the main loop telling us a timeout was reached, or - * we've acquired all the samples we asked for -- we're done. - * Send the (properly-ordered) buffer to the frontend. - */ - if (devc->trigger_at != -1) { - /* a trigger was set up, so we need to tell the frontend - * about it. - */ - if (devc->trigger_at > 0) { - /* there are pre-trigger samples, send those first */ - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.length = devc->trigger_at * 4; - logic.unitsize = 4; - logic.data = devc->raw_sample_buf + - (devc->limit_samples - devc->num_samples) * 4; - 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->num_samples * 4) - (devc->trigger_at * 4); - logic.unitsize = 4; - logic.data = devc->raw_sample_buf + devc->trigger_at * 4 + - (devc->limit_samples - devc->num_samples) * 4; - sr_session_send(cb_data, &packet); - } else { - /* no trigger was used */ - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.length = devc->num_samples * 4; - logic.unitsize = 4; - logic.data = devc->raw_sample_buf + - (devc->limit_samples - devc->num_samples) * 4; - sr_session_send(cb_data, &packet); - } - g_free(devc->raw_sample_buf); - - serial_flush(serial); - abort_acquisition(sdi); - } - - return TRUE; -}