1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <console/usb.h>
4 #include "ehci_debug.h"
5
usbdebug_tx_byte(struct dbgp_pipe * pipe,unsigned char data)6 static void usbdebug_tx_byte(struct dbgp_pipe *pipe, unsigned char data)
7 {
8 if (!dbgp_try_get(pipe))
9 return;
10 pipe->buf[pipe->bufidx++] = data;
11 if (pipe->bufidx >= 8) {
12 dbgp_bulk_write_x(pipe, pipe->buf, pipe->bufidx);
13 pipe->bufidx = 0;
14 }
15 dbgp_put(pipe);
16 }
17
usbdebug_tx_flush(struct dbgp_pipe * pipe)18 static void usbdebug_tx_flush(struct dbgp_pipe *pipe)
19 {
20 if (!dbgp_try_get(pipe))
21 return;
22 if (pipe->bufidx > 0) {
23 dbgp_bulk_write_x(pipe, pipe->buf, pipe->bufidx);
24 pipe->bufidx = 0;
25 }
26 dbgp_put(pipe);
27 }
28
usbdebug_rx_byte(struct dbgp_pipe * pipe)29 static unsigned char usbdebug_rx_byte(struct dbgp_pipe *pipe)
30 {
31 unsigned char data = 0xff;
32 if (!dbgp_try_get(pipe))
33 return 0xff;
34 while (pipe->bufidx >= pipe->buflen) {
35 pipe->buflen = 0;
36 pipe->bufidx = 0;
37 int count = dbgp_bulk_read_x(pipe, pipe->buf, 8);
38 if (count>0)
39 pipe->buflen = count;
40 }
41 data = pipe->buf[pipe->bufidx++];
42 dbgp_put(pipe);
43 return data;
44 }
45
usb_tx_byte(int idx,unsigned char data)46 void usb_tx_byte(int idx, unsigned char data)
47 {
48 usbdebug_tx_byte(dbgp_console_output(), data);
49 }
50
usb_tx_flush(int idx)51 void usb_tx_flush(int idx)
52 {
53 usbdebug_tx_flush(dbgp_console_output());
54 }
55
usb_rx_byte(int idx)56 unsigned char usb_rx_byte(int idx)
57 {
58 return usbdebug_rx_byte(dbgp_console_input());
59 }
60
usb_can_rx_byte(int idx)61 int usb_can_rx_byte(int idx)
62 {
63 return dbgp_ep_is_active(dbgp_console_input());
64 }
65