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USBDEBUG: buffer up to 8 bytes

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EHCI debug allows to send message with 8 bytes length, but
we're only sending one byte in each transaction. Buffer up
to 8 bytes to speed up debug output.

Change-Id: I9dbb406833c4966c3afbd610e1b13a8fa3d62f39
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1357
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.huber@secunet.com>
This commit is contained in:
Sven Schnelle
2012-07-26 14:31:40 +02:00
committed by Patrick Georgi
parent 0b7b7b6334
commit 82704c63b9
5 changed files with 45 additions and 14 deletions
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9
src/console/usbdebug_console.c
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@ -55,8 +55,7 @@ static void dbgp_init(void)
static void dbgp_tx_byte(unsigned char data)
{
if (dbg_info.ehci_debug)
dbgp_bulk_write_x(&dbg_info, (char*)&data, 1);
usbdebug_tx_byte(&dbg_info, data);
}
static unsigned char dbgp_rx_byte(void)
@ -69,6 +68,11 @@ static unsigned char dbgp_rx_byte(void)
return data;
}
static void dbgp_tx_flush(void)
{
usbdebug_tx_flush(&dbg_info);
}
static int dbgp_tst_byte(void)
{
return (int)dbg_info.ehci_debug;
@ -77,6 +81,7 @@ static int dbgp_tst_byte(void)
static const struct console_driver usbdebug_direct_console __console = {
.init = dbgp_init,
.tx_byte = dbgp_tx_byte,
.tx_flush = dbgp_tx_flush,
.rx_byte = dbgp_rx_byte,
.tst_byte = dbgp_tst_byte,
};