blob: 090c9312b78d0f6b0c3f260c6ee1d5cb48ceffdf [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* 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());
}