From 0108bf5157de24619f644721a82775d578087573 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Wed, 15 Jan 2014 22:26:03 +0200 Subject: usbdebug: Improve receive speed MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Read from USB endpoint_in 8 bytes at a time, the maximum what EHCI debug port capability has to offer. Change-Id: I3d012d758a24b24f894e587b301f620933331407 Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/4700 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/drivers/usb/ehci_debug.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'src/drivers/usb/ehci_debug.c') diff --git a/src/drivers/usb/ehci_debug.c b/src/drivers/usb/ehci_debug.c index 94625c0e1a..b28208df28 100644 --- a/src/drivers/usb/ehci_debug.c +++ b/src/drivers/usb/ehci_debug.c @@ -48,6 +48,7 @@ struct dbgp_pipe int timeout; u8 bufidx; + u8 buflen; char buf[8]; }; @@ -912,6 +913,23 @@ void usbdebug_tx_flush(struct dbgp_pipe *pipe) dbgp_put(pipe); } +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; +} + #if !defined(__PRE_RAM__) && !defined(__SMM__) static void usbdebug_re_enable(unsigned ehci_base) { -- cgit v1.2.3