+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.com>
- *
- * 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 "lwla.h"
-#include "protocol.h"
-#include "libsigrok-internal.h"
-
-SR_PRIV int lwla_send_bitstream(const struct sr_usb_dev_inst *usb,
- const char *filename)
-{
- GMappedFile *file;
- GError *error;
- char *stream;
- size_t length;
- int ret;
- int xfer_len;
-
- if (usb == NULL || filename == NULL)
- return SR_ERR_ARG;
-
- sr_info("Downloading FPGA bitstream at '%s'.", filename);
-
- /* Map bitstream file into memory. */
- error = NULL;
- file = g_mapped_file_new(filename, FALSE, &error);
- if (!file) {
- sr_err("Unable to open bitstream file: %s.", error->message);
- g_error_free(error);
- return SR_ERR;
- }
- stream = g_mapped_file_get_contents(file);
- length = g_mapped_file_get_length(file);
-
- /* Sanity check. */
- if (!stream || length < 4 || RB32(stream) != length) {
- sr_err("Invalid FPGA bitstream.");
- g_mapped_file_unref(file);
- return SR_ERR;
- }
-
- /* Transfer the entire bitstream in one URB. */
- ret = libusb_bulk_transfer(usb->devhdl, EP_BITSTREAM,
- (unsigned char *)stream, length,
- &xfer_len, USB_TIMEOUT);
- if (ret != 0) {
- sr_err("Failed to transfer bitstream: %s.",
- libusb_error_name(ret));
- g_mapped_file_unref(file);
- return SR_ERR;
- }
- if (xfer_len != (int)length) {
- sr_err("Failed to transfer bitstream: incorrect length "
- "%d != %d.", xfer_len, (int)length);
- g_mapped_file_unref(file);
- return SR_ERR;
- }
- g_mapped_file_unref(file);
- sr_info("FPGA bitstream download of %d bytes done.", xfer_len);
-
- /* This delay appears to be necessary for reliable operation. */
- g_usleep(30000);
-
- return SR_OK;
-}
-
-SR_PRIV int lwla_send_command(const struct sr_usb_dev_inst *usb,
- const uint16_t *command, int cmd_len)
-{
- int ret;
- int xfer_len = 0;
-
- if (usb == NULL || command == NULL || cmd_len < 1)
- return SR_ERR_ARG;
-
- ret = libusb_bulk_transfer(usb->devhdl, EP_COMMAND,
- (unsigned char *)command, cmd_len * 2,
- &xfer_len, USB_TIMEOUT);
- if (ret != 0) {
- sr_dbg("Failed to send command %u: %s.",
- LWLA_READ16(command), libusb_error_name(ret));
- return SR_ERR;
- }
- if (xfer_len != cmd_len * 2) {
- sr_dbg("Failed to send command %u: incorrect length %d != %d.",
- LWLA_READ16(command), xfer_len, cmd_len * 2);
- return SR_ERR;
- }
- return SR_OK;
-}
-
-SR_PRIV int lwla_receive_reply(const struct sr_usb_dev_inst *usb,
- uint16_t *reply, int reply_len, int expect_len)
-{
- int ret;
- int xfer_len = 0;
-
- if (reply_len == 0)
- return SR_OK;
-
- if (usb == NULL || reply == NULL || reply_len < 0)
- return SR_ERR_ARG;
-
- ret = libusb_bulk_transfer(usb->devhdl, EP_REPLY,
- (unsigned char *)reply, reply_len * 2,
- &xfer_len, USB_TIMEOUT);
- if (ret != 0) {
- sr_dbg("Failed to receive reply: %s.", libusb_error_name(ret));
- return SR_ERR;
- }
- if (xfer_len != expect_len * 2) {
- sr_dbg("Failed to receive reply: incorrect length %d != %d.",
- xfer_len, expect_len * 2);
- return SR_ERR;
- }
- return SR_OK;
-}
-
-SR_PRIV int lwla_read_reg(const struct sr_usb_dev_inst *usb,
- uint16_t reg, uint32_t *value)
-{
- int ret;
- uint16_t command[2];
- uint16_t reply[256];
-
- command[0] = LWLA_WORD(CMD_READ_REG);
- command[1] = LWLA_WORD(reg);
-
- ret = lwla_send_command(usb, command, G_N_ELEMENTS(command));
-
- if (ret != SR_OK)
- return ret;
-
- ret = lwla_receive_reply(usb, reply, G_N_ELEMENTS(reply), 2);
-
- if (ret == SR_OK)
- *value = LWLA_READ32(reply);
-
- return ret;
-}
-
-SR_PRIV int lwla_write_reg(const struct sr_usb_dev_inst *usb,
- uint16_t reg, uint32_t value)
-{
- uint16_t command[4];
-
- command[0] = LWLA_WORD(CMD_WRITE_REG);
- command[1] = LWLA_WORD(reg);
- command[2] = LWLA_WORD_0(value);
- command[3] = LWLA_WORD_1(value);
-
- return lwla_send_command(usb, command, G_N_ELEMENTS(command));
-}
-
-SR_PRIV int lwla_write_regs(const struct sr_usb_dev_inst *usb,
- const struct regval_pair *regvals, int count)
-{
- int i;
- int ret;
-
- ret = SR_OK;
-
- for (i = 0; i < count; ++i) {
- ret = lwla_write_reg(usb, regvals[i].reg, regvals[i].val);
-
- if (ret != SR_OK)
- break;
- }
-
- return ret;
-}
projects / libsigrok.git / blobdiff