ea6736a2d0
Struct dbgp_pipe would not be suitable for use with xHCI. Just use an index, it is easy to setup in Kconfig if our future debug setup has separate pipes for console output and debugging/traceings. Change-Id: Icbbd28f03113b208016f80217ab801d598d443a8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5227 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
82 lines
2 KiB
C
82 lines
2 KiB
C
/*
|
|
* 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());
|
|
}
|