Fix incorrect usb report interpretation
This commit is contained in:
Aleš Nesrsta
Vladimir 'phcoder' Serbinenko
parent
685475e596
commit
ab629d0c5d
1 changed files with 104 additions and 30 deletions
|
|
@ -75,6 +75,10 @@ struct grub_usb_keyboard_data
|
|||
int dead;
|
||||
int last_key;
|
||||
grub_uint64_t repeat_time;
|
||||
grub_uint8_t current_report[8];
|
||||
grub_uint8_t last_report[8];
|
||||
int index;
|
||||
int max_index;
|
||||
};
|
||||
|
||||
static int grub_usb_keyboard_getkey (struct grub_term_input *term);
|
||||
|
|
@ -192,6 +196,9 @@ grub_usb_keyboard_attach (grub_usb_device_t usbdev, int configno, int interfno)
|
|||
data->interfno = interfno;
|
||||
data->endp = endp;
|
||||
|
||||
/* Configure device */
|
||||
grub_usb_set_configuration (usbdev, configno + 1);
|
||||
|
||||
/* Place the device in boot mode. */
|
||||
grub_usb_control_msg (usbdev, GRUB_USB_REQTYPE_CLASS_INTERFACE_OUT,
|
||||
USB_HID_SET_PROTOCOL, 0, interfno, 0, 0);
|
||||
|
|
@ -270,17 +277,96 @@ send_leds (struct grub_usb_keyboard_data *termdata)
|
|||
grub_errno = GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
static int
|
||||
parse_keycode (struct grub_usb_keyboard_data *termdata)
|
||||
{
|
||||
int index = termdata->index;
|
||||
int i, keycode;
|
||||
|
||||
/* Sanity check */
|
||||
if (index < 2)
|
||||
index = 2;
|
||||
|
||||
for ( ; index < termdata->max_index; index++)
|
||||
{
|
||||
keycode = termdata->current_report[index];
|
||||
|
||||
if (keycode == KEY_NO_KEY
|
||||
|| keycode == KEY_ERR_BUFFER
|
||||
|| keycode == KEY_ERR_POST
|
||||
|| keycode == KEY_ERR_UNDEF)
|
||||
{
|
||||
/* Don't parse (rest of) this report */
|
||||
termdata->index = 0;
|
||||
if (keycode != KEY_NO_KEY)
|
||||
/* Don't replace last report with current faulty report
|
||||
* in future ! */
|
||||
grub_memcpy (termdata->current_report,
|
||||
termdata->last_report,
|
||||
sizeof (termdata->report));
|
||||
return GRUB_TERM_NO_KEY;
|
||||
}
|
||||
|
||||
/* Try to find current keycode in last report. */
|
||||
for (i = 2; i < 8; i++)
|
||||
if (keycode == termdata->last_report[i])
|
||||
break;
|
||||
if (i < 8)
|
||||
/* Keycode is in last report, it means it was not released,
|
||||
* ignore it. */
|
||||
continue;
|
||||
|
||||
if (keycode == KEY_CAPS_LOCK)
|
||||
{
|
||||
termdata->mods ^= GRUB_TERM_STATUS_CAPS;
|
||||
send_leds (termdata);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (keycode == KEY_NUM_LOCK)
|
||||
{
|
||||
termdata->mods ^= GRUB_TERM_STATUS_NUM;
|
||||
send_leds (termdata);
|
||||
continue;
|
||||
}
|
||||
|
||||
termdata->last_key = grub_term_map_key (keycode,
|
||||
interpret_status (termdata->current_report[0])
|
||||
| termdata->mods);
|
||||
termdata->repeat_time = grub_get_time_ms () + GRUB_TERM_REPEAT_PRE_INTERVAL;
|
||||
|
||||
grub_errno = GRUB_ERR_NONE;
|
||||
|
||||
index++;
|
||||
if (index >= termdata->max_index)
|
||||
termdata->index = 0;
|
||||
else
|
||||
termdata->index = index;
|
||||
|
||||
return termdata->last_key;
|
||||
}
|
||||
|
||||
/* All keycodes parsed */
|
||||
termdata->index = 0;
|
||||
return GRUB_TERM_NO_KEY;
|
||||
}
|
||||
|
||||
static int
|
||||
grub_usb_keyboard_getkey (struct grub_term_input *term)
|
||||
{
|
||||
grub_usb_err_t err;
|
||||
struct grub_usb_keyboard_data *termdata = term->data;
|
||||
grub_uint8_t data[sizeof (termdata->report)];
|
||||
grub_size_t actual;
|
||||
int keycode = GRUB_TERM_NO_KEY;
|
||||
|
||||
if (termdata->dead)
|
||||
return GRUB_TERM_NO_KEY;
|
||||
|
||||
if (termdata->index)
|
||||
keycode = parse_keycode (termdata);
|
||||
if (keycode != GRUB_TERM_NO_KEY)
|
||||
return keycode;
|
||||
|
||||
/* Poll interrupt pipe. */
|
||||
err = grub_usb_check_transfer (termdata->transfer, &actual);
|
||||
|
||||
|
|
@ -296,7 +382,14 @@ grub_usb_keyboard_getkey (struct grub_term_input *term)
|
|||
return GRUB_TERM_NO_KEY;
|
||||
}
|
||||
|
||||
grub_memcpy (data, termdata->report, sizeof (data));
|
||||
if (!err && (actual >= 3))
|
||||
grub_memcpy (termdata->last_report,
|
||||
termdata->current_report,
|
||||
sizeof (termdata->report));
|
||||
|
||||
grub_memcpy (termdata->current_report,
|
||||
termdata->report,
|
||||
sizeof (termdata->report));
|
||||
|
||||
termdata->transfer = grub_usb_bulk_read_background (termdata->usbdev,
|
||||
termdata->endp->endp_addr,
|
||||
|
|
@ -314,42 +407,23 @@ grub_usb_keyboard_getkey (struct grub_term_input *term)
|
|||
"err = %d, actual = %d report: 0x%02x 0x%02x 0x%02x 0x%02x"
|
||||
" 0x%02x 0x%02x 0x%02x 0x%02x\n",
|
||||
err, actual,
|
||||
data[0], data[1], data[2], data[3],
|
||||
data[4], data[5], data[6], data[7]);
|
||||
termdata->current_report[0], termdata->current_report[1],
|
||||
termdata->current_report[2], termdata->current_report[3],
|
||||
termdata->current_report[4], termdata->current_report[5],
|
||||
termdata->current_report[6], termdata->current_report[7]);
|
||||
|
||||
if (err || actual < 1)
|
||||
return GRUB_TERM_NO_KEY;
|
||||
|
||||
termdata->status = data[0];
|
||||
termdata->status = termdata->current_report[0];
|
||||
|
||||
if (actual < 3)
|
||||
return GRUB_TERM_NO_KEY;
|
||||
|
||||
if (data[2] == KEY_NO_KEY || data[2] == KEY_ERR_BUFFER
|
||||
|| data[2] == KEY_ERR_POST || data[2] == KEY_ERR_UNDEF)
|
||||
return GRUB_TERM_NO_KEY;
|
||||
termdata->index = 2; /* New data received. */
|
||||
termdata->max_index = actual;
|
||||
|
||||
if (data[2] == KEY_CAPS_LOCK)
|
||||
{
|
||||
termdata->mods ^= GRUB_TERM_STATUS_CAPS;
|
||||
send_leds (termdata);
|
||||
return GRUB_TERM_NO_KEY;
|
||||
}
|
||||
|
||||
if (data[2] == KEY_NUM_LOCK)
|
||||
{
|
||||
termdata->mods ^= GRUB_TERM_STATUS_NUM;
|
||||
send_leds (termdata);
|
||||
return GRUB_TERM_NO_KEY;
|
||||
}
|
||||
|
||||
termdata->last_key = grub_term_map_key (data[2], interpret_status (data[0])
|
||||
| termdata->mods);
|
||||
termdata->repeat_time = grub_get_time_ms () + GRUB_TERM_REPEAT_PRE_INTERVAL;
|
||||
|
||||
grub_errno = GRUB_ERR_NONE;
|
||||
|
||||
return termdata->last_key;
|
||||
return parse_keycode (termdata);
|
||||
}
|
||||
|
||||
static int
|
||||
|
|
|
|||
Loading…
Reference in a new issue