| /* |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA |
| */ |
| |
| #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()); |
| } |