5a77d196ea
Also extract #define constants for W25Q80BV into driver structure. Driver could eventually extend to other devices.
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/*
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* Copyright 2012 Jared Boone
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* Copyright 2013 Benjamin Vernoux
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*
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* This file is part of HackRF.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "usb_api_spiflash.h"
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#include "usb_queue.h"
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#include <stddef.h>
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#include <hackrf_core.h>
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#include <w25q80bv.h>
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/* Buffer size == spi_flash.page_len */
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uint8_t spiflash_buffer[256U];
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usb_request_status_t usb_vendor_request_erase_spiflash(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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//FIXME This should refuse to run if executing from SPI flash.
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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w25q80bv_setup(&spi_flash);
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/* only chip erase is implemented */
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w25q80bv_chip_erase(&spi_flash);
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usb_transfer_schedule_ack(endpoint->in);
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//FIXME probably should undo w25q80bv_setup()
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}
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return USB_REQUEST_STATUS_OK;
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}
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usb_request_status_t usb_vendor_request_write_spiflash(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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uint32_t addr = 0;
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uint16_t len = 0;
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//FIXME This should refuse to run if executing from SPI flash.
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes)
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|| ((addr + len) > spi_flash.num_bytes)) {
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return USB_REQUEST_STATUS_STALL;
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} else {
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usb_transfer_schedule_block(endpoint->out, &spiflash_buffer[0], len,
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NULL, NULL);
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w25q80bv_setup(&spi_flash);
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return USB_REQUEST_STATUS_OK;
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}
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} else if (stage == USB_TRANSFER_STAGE_DATA) {
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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/* This check is redundant but makes me feel better. */
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if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes)
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|| ((addr + len) > spi_flash.num_bytes)) {
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return USB_REQUEST_STATUS_STALL;
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} else {
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w25q80bv_program(&spi_flash, addr, len, &spiflash_buffer[0]);
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usb_transfer_schedule_ack(endpoint->in);
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//FIXME probably should undo w25q80bv_setup()
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return USB_REQUEST_STATUS_OK;
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}
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_read_spiflash(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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uint32_t i;
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uint32_t addr;
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uint16_t len;
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uint8_t* u8_addr_pt;
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if (stage == USB_TRANSFER_STAGE_SETUP)
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{
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes)
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|| ((addr + len) > spi_flash.num_bytes)) {
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return USB_REQUEST_STATUS_STALL;
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} else {
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/* TODO flush SPIFI "cache" before to read the SPIFI memory */
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u8_addr_pt = (uint8_t*)(addr + SPIFI_DATA_UNCACHED_BASE);
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for(i=0; i<len; i++)
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{
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spiflash_buffer[i] = u8_addr_pt[i];
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}
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usb_transfer_schedule_block(endpoint->in, &spiflash_buffer[0], len,
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NULL, NULL);
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return USB_REQUEST_STATUS_OK;
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}
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} else if (stage == USB_TRANSFER_STAGE_DATA)
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{
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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/* This check is redundant but makes me feel better. */
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if ((len > spi_flash.page_len) || (addr > spi_flash.num_bytes)
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|| ((addr + len) > spi_flash.num_bytes))
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{
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return USB_REQUEST_STATUS_STALL;
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} else
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{
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usb_transfer_schedule_ack(endpoint->out);
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return USB_REQUEST_STATUS_OK;
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}
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} else
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{
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return USB_REQUEST_STATUS_OK;
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}
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}
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