mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-23 08:27:44 +00:00
132 lines
3.1 KiB
C
132 lines
3.1 KiB
C
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2023 Bernd Herzog
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*
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* This file is part of PortaPack.
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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 "sd_over_usb.h"
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#include "scsi.h"
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bool scsi_running = false;
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usb_request_status_t report_max_lun(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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endpoint->buffer[0] = 0;
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usb_transfer_schedule_block(
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endpoint->in,
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&endpoint->buffer,
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1,
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NULL,
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NULL);
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usb_transfer_schedule_ack(endpoint->out);
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scsi_running = true;
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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_class_request(usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage) {
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usb_request_status_t status = USB_REQUEST_STATUS_STALL;
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volatile uint8_t request = endpoint->setup.request;
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if (request == 0xFE)
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return report_max_lun(endpoint, stage);
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return status;
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}
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const usb_request_handlers_t usb_request_handlers = {
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.standard = usb_standard_request,
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.class = usb_class_request,
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.vendor = 0,
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.reserved = 0
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};
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void usb_configuration_changed(usb_device_t* const device) {
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(void)device;
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usb_endpoint_init(&usb_endpoint_bulk_in);
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usb_endpoint_init(&usb_endpoint_bulk_out);
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}
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void start_usb(void) {
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detect_hardware_platform();
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pin_setup();
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cpu_clock_init();
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usb_set_configuration_changed_cb(usb_configuration_changed);
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usb_peripheral_reset();
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usb_device_init(0, &usb_device);
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usb_queue_init(&usb_endpoint_control_out_queue);
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usb_queue_init(&usb_endpoint_control_in_queue);
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usb_queue_init(&usb_endpoint_bulk_out_queue);
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usb_queue_init(&usb_endpoint_bulk_in_queue);
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usb_endpoint_init(&usb_endpoint_control_out);
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usb_endpoint_init(&usb_endpoint_control_in);
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nvic_set_priority(NVIC_USB0_IRQ, 255);
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usb_run(&usb_device);
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}
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void stop_usb(void) {
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usb_peripheral_reset();
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}
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void irq_usb(void) {
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usb0_isr();
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}
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volatile bool transfer_complete = false;
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void scsi_bulk_transfer_complete(void* user_data, unsigned int bytes_transferred)
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{
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(void)user_data;
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(void)bytes_transferred;
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transfer_complete = true;
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}
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void usb_transfer(void) {
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if (scsi_running) {
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transfer_complete = false;
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usb_transfer_schedule_block(
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&usb_endpoint_bulk_out,
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&usb_bulk_buffer[0x4000],
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USB_TRANSFER_SIZE,
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scsi_bulk_transfer_complete,
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NULL);
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while (!transfer_complete);
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msd_cbw_t *msd_cbw_data = (msd_cbw_t *) &usb_bulk_buffer[0x4000];
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if (msd_cbw_data->signature == MSD_CBW_SIGNATURE){
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scsi_command(msd_cbw_data);
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}
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}
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} |