diff options
Diffstat (limited to 'src/drivers/usb')
| -rw-r--r-- | src/drivers/usb/ehci_debug.c | 18 |
1 files changed, 18 insertions, 0 deletions
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) { |