X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fsysclk-lwla%2Flwla.c;fp=hardware%2Fsysclk-lwla%2Flwla.c;h=0000000000000000000000000000000000000000;hb=155b680da482cea2381becb73c51cfb838bff31e;hp=dcb7af7782d72fb8384c9289348888a3f530f51a;hpb=43cd4637285833706f8a404ca027bcf0ee75b9ae;p=libsigrok.git diff --git a/hardware/sysclk-lwla/lwla.c b/hardware/sysclk-lwla/lwla.c deleted file mode 100644 index dcb7af77..00000000 --- a/hardware/sysclk-lwla/lwla.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2014 Daniel Elstner - * - * 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 "lwla.h" -#include "protocol.h" -#include "libsigrok-internal.h" -#include -#include - -#define BITSTREAM_MAX_SIZE 262144 /* bitstream size limit for safety */ -#define BITSTREAM_HEADER_SIZE 4 /* transfer header size in bytes */ - -/* Load a bitstream file into memory. Returns a newly allocated array - * consisting of a 32-bit length field followed by the bitstream data. - */ -static unsigned char *load_bitstream_file(const char *filename, int *length_p) -{ - GStatBuf statbuf; - FILE *file; - unsigned char *stream; - size_t length, count; - - /* Retrieve and validate the file size. */ - if (g_stat(filename, &statbuf) < 0) { - sr_err("Failed to access bitstream file: %s.", - g_strerror(errno)); - return NULL; - } - if (!S_ISREG(statbuf.st_mode)) { - sr_err("Bitstream is not a regular file."); - return NULL; - } - if (statbuf.st_size <= 0 || statbuf.st_size > BITSTREAM_MAX_SIZE) { - sr_err("Refusing to load bitstream of unreasonable size " - "(%" PRIu64 " bytes).", (uint64_t)statbuf.st_size); - return NULL; - } - - /* The message length includes the 4-byte header. */ - length = BITSTREAM_HEADER_SIZE + statbuf.st_size; - stream = g_try_malloc(length); - if (!stream) { - sr_err("Failed to allocate bitstream buffer."); - return NULL; - } - - file = g_fopen(filename, "rb"); - if (!file) { - sr_err("Failed to open bitstream file: %s.", g_strerror(errno)); - g_free(stream); - return NULL; - } - - /* Write the message length header. */ - *(uint32_t *)stream = GUINT32_TO_BE(length); - - count = fread(stream + BITSTREAM_HEADER_SIZE, - length - BITSTREAM_HEADER_SIZE, 1, file); - if (count != 1) { - sr_err("Failed to read bitstream file: %s.", g_strerror(errno)); - fclose(file); - g_free(stream); - return NULL; - } - fclose(file); - - *length_p = length; - return stream; -} - -/* Load a Raw Binary File (.rbf) from the firmware directory and transfer - * it to the device. - */ -SR_PRIV int lwla_send_bitstream(const struct sr_usb_dev_inst *usb, - const char *basename) -{ - char *filename; - unsigned char *stream; - int ret; - int length; - int xfer_len; - - if (!usb || !basename) - return SR_ERR_BUG; - - filename = g_build_filename(FIRMWARE_DIR, basename, NULL); - sr_info("Downloading FPGA bitstream at '%s'.", filename); - - stream = load_bitstream_file(filename, &length); - g_free(filename); - - if (!stream) - return SR_ERR; - - /* Transfer the entire bitstream in one URB. */ - ret = libusb_bulk_transfer(usb->devhdl, EP_BITSTREAM, - stream, length, &xfer_len, USB_TIMEOUT); - g_free(stream); - - if (ret != 0) { - sr_err("Failed to transfer bitstream: %s.", - libusb_error_name(ret)); - return SR_ERR; - } - if (xfer_len != length) { - sr_err("Failed to transfer bitstream: incorrect length " - "%d != %d.", xfer_len, length); - return SR_ERR; - } - 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; - - if (!usb || !command || cmd_len <= 0) - return SR_ERR_BUG; - - xfer_len = 0; - 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 %d: %s.", - LWLA_TO_UINT16(command[0]), libusb_error_name(ret)); - return SR_ERR; - } - if (xfer_len != cmd_len * 2) { - sr_dbg("Failed to send command %d: incorrect length %d != %d.", - LWLA_TO_UINT16(command[0]), xfer_len, cmd_len * 2); - return SR_ERR; - } - return SR_OK; -} - -SR_PRIV int lwla_receive_reply(const struct sr_usb_dev_inst *usb, - uint32_t *reply, int reply_len, int expect_len) -{ - int ret; - int xfer_len; - - if (!usb || !reply || reply_len <= 0) - return SR_ERR_BUG; - - xfer_len = 0; - ret = libusb_bulk_transfer(usb->devhdl, EP_REPLY, - (unsigned char *)reply, reply_len * 4, - &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 * 4) { - sr_dbg("Failed to receive reply: incorrect length %d != %d.", - xfer_len, expect_len * 4); - 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]; - uint32_t reply[128]; /* full EP buffer to avoid overflows */ - - 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), 1); - - if (ret == SR_OK) - *value = LWLA_TO_UINT32(reply[0]); - - 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; -}