| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #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()); |
| } |