/* * This file is part of the coreboot project. * * Copyright (C) 2006 Eric Biederman (ebiederm@xmission.com) * Copyright (C) 2007 AMD * * 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; version 2 of the License. * * 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. */ #include <console/usb.h> #include "ehci_debug.h" static void usbdebug_tx_byte(struct dbgp_pipe *pipe, unsigned char data) { if (!dbgp_try_get(pipe)) return; pipe->buf[pipe->bufidx++] = data; if (pipe->bufidx >= 8) { dbgp_bulk_write_x(pipe, pipe->buf, pipe->bufidx); pipe->bufidx = 0; } dbgp_put(pipe); } static void usbdebug_tx_flush(struct dbgp_pipe *pipe) { if (!dbgp_try_get(pipe)) return; if (pipe->bufidx > 0) { dbgp_bulk_write_x(pipe, pipe->buf, pipe->bufidx); pipe->bufidx = 0; } dbgp_put(pipe); } static unsigned char usbdebug_rx_byte(struct dbgp_pipe *pipe) { unsigned char data = 0xff; if (!dbgp_try_get(pipe)) return 0xff; while (pipe->bufidx >= pipe->buflen) { pipe->buflen = 0; pipe->bufidx = 0; int count = dbgp_bulk_read_x(pipe, pipe->buf, 8); if (count>0) pipe->buflen = count; } data = pipe->buf[pipe->bufidx++]; dbgp_put(pipe); return data; } void usb_tx_byte(int idx, unsigned char data) { usbdebug_tx_byte(dbgp_console_output(), data); } void usb_tx_flush(int idx) { usbdebug_tx_flush(dbgp_console_output()); } unsigned char usb_rx_byte(int idx) { return usbdebug_rx_byte(dbgp_console_input()); } int usb_can_rx_byte(int idx) { return dbgp_ep_is_active(dbgp_console_input()); }