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/*
* Copyright 2012-2022 Great Scott Gadgets <info@greatscottgadgets.com>
* Copyright 2012 Jared Boone
* Copyright 2013 Benjamin Vernoux
*
* This file is part of HackRF.
*
* 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 2, 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "usb_api_spiflash.h"
#include "usb_queue.h"
#include <stddef.h>
#include <hackrf_core.h>
#include <w25q80bv.h>
/* Buffer size == spi_flash.page_len */
uint8_t spiflash_buffer[256U];
usb_request_status_t usb_vendor_request_erase_spiflash(
usb_endpoint_t* const endpoint,
const usb_transfer_stage_t stage)
{
if (stage == USB_TRANSFER_STAGE_SETUP) {
spi_bus_start(spi_flash.bus, &ssp_config_w25q80bv);
w25q80bv_setup(&spi_flash);
/* only chip erase is implemented */
w25q80bv_chip_erase(&spi_flash);
usb_transfer_schedule_ack(endpoint->in);
}
return USB_REQUEST_STATUS_OK;
}
usb_request_status_t usb_vendor_request_write_spiflash(
usb_endpoint_t* const endpoint,
const usb_transfer_stage_t stage)
{
uint32_t addr = 0;
uint16_t len = 0;
if (stage == USB_TRANSFER_STAGE_SETUP) {
addr = (endpoint->setup.value << 16) | endpoint->setup.index;
len = endpoint->setup.length;
if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes) ||
((addr + len) > spi_flash.num_bytes)) {
return USB_REQUEST_STATUS_STALL;
} else {
usb_transfer_schedule_block(
endpoint->out,
&spiflash_buffer[0],
len,
NULL,
NULL);
spi_bus_start(spi_flash.bus, &ssp_config_w25q80bv);
w25q80bv_setup(&spi_flash);
return USB_REQUEST_STATUS_OK;
}
} else if (stage == USB_TRANSFER_STAGE_DATA) {
addr = (endpoint->setup.value << 16) | endpoint->setup.index;
len = endpoint->setup.length;
/* This check is redundant but makes me feel better. */
if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes) ||
((addr + len) > spi_flash.num_bytes)) {
return USB_REQUEST_STATUS_STALL;
} else {
w25q80bv_program(&spi_flash, addr, len, &spiflash_buffer[0]);
usb_transfer_schedule_ack(endpoint->in);
return USB_REQUEST_STATUS_OK;
}
} else {
return USB_REQUEST_STATUS_OK;
}
}
usb_request_status_t usb_vendor_request_read_spiflash(
usb_endpoint_t* const endpoint,
const usb_transfer_stage_t stage)
{
uint32_t addr;
uint16_t len;
if (stage == USB_TRANSFER_STAGE_SETUP) {
addr = (endpoint->setup.value << 16) | endpoint->setup.index;
len = endpoint->setup.length;
if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes) ||
((addr + len) > spi_flash.num_bytes)) {
return USB_REQUEST_STATUS_STALL;
} else {
w25q80bv_read(&spi_flash, addr, len, &spiflash_buffer[0]);
usb_transfer_schedule_block(
endpoint->in,
&spiflash_buffer[0],
len,
NULL,
NULL);
return USB_REQUEST_STATUS_OK;
}
} else if (stage == USB_TRANSFER_STAGE_DATA) {
addr = (endpoint->setup.value << 16) | endpoint->setup.index;
len = endpoint->setup.length;
/* This check is redundant but makes me feel better. */
if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes) ||
((addr + len) > spi_flash.num_bytes)) {
return USB_REQUEST_STATUS_STALL;
} else {
usb_transfer_schedule_ack(endpoint->out);
return USB_REQUEST_STATUS_OK;
}
} else {
return USB_REQUEST_STATUS_OK;
}
}
usb_request_status_t usb_vendor_request_spiflash_status(
usb_endpoint_t* const endpoint,
const usb_transfer_stage_t stage)
{
if (stage == USB_TRANSFER_STAGE_SETUP) {
w25q80bv_get_full_status(&spi_flash, endpoint->buffer);
usb_transfer_schedule_block(
endpoint->in,
&endpoint->buffer,
2,
NULL,
NULL);
return USB_REQUEST_STATUS_OK;
} else if (stage == USB_TRANSFER_STAGE_DATA) {
usb_transfer_schedule_ack(endpoint->out);
return USB_REQUEST_STATUS_OK;
} else {
return USB_REQUEST_STATUS_OK;
}
}
usb_request_status_t usb_vendor_request_spiflash_clear_status(
usb_endpoint_t* const endpoint,
const usb_transfer_stage_t stage)
{
if (stage == USB_TRANSFER_STAGE_SETUP) {
w25q80bv_clear_status(&spi_flash);
usb_transfer_schedule_ack(endpoint->in);
}
return USB_REQUEST_STATUS_OK;
}
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