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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <usb/usb.h>
#include <curses.h>
enum { hid_subclass_none = 0, hid_subclass_boot = 1 };
typedef enum { hid_proto_boot = 0, hid_proto_report = 1 } hid_proto;
enum { hid_boot_proto_none = 0, hid_boot_proto_keyboard =
1, hid_boot_proto_mouse = 2
};
static const char *boot_protos[3] = { "(none)", "keyboard", "mouse" };
enum { GET_REPORT = 0x1, GET_IDLE = 0x2, GET_PROTOCOL = 0x3, SET_REPORT =
0x9, SET_IDLE = 0xa, SET_PROTOCOL = 0xb
};
static void
usb_hid_destroy (usbdev_t *dev)
{
free (dev->data);
}
typedef struct {
void* queue;
} usbhid_inst_t;
#define HID_INST(dev) ((usbhid_inst_t*)(dev)->data)
/* buffer is global to all keyboard drivers */
int count;
short keybuffer[16];
int keypress;
short keymap[256] = {
-1, -1, -1, -1, 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
'u', 'v', 'w', 'x', 'y', 'z', '1', '2',
'3', '4', '5', '6', '7', '8', '9', '0',
'\n', '\e', '\b', '\t', ' ', '-', '=', '[',
']', '\\', -1, ';', '\'', '`', ',', '.',
'/', -1, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6),
KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), KEY_F(11), KEY_F(12), -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
/* 50 */
-1, -1, -1, -1, -1, '*', '-', '+',
-1, KEY_END, KEY_DOWN, KEY_NPAGE, KEY_LEFT, -1, KEY_RIGHT, KEY_HOME,
KEY_UP, KEY_PPAGE, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
};
static void
usb_hid_poll (usbdev_t *dev)
{
u8* buf;
while ((buf=dev->controller->poll_intr_queue (HID_INST(dev)->queue))) {
// FIXME: manage buf[0]=special keys, too
int i;
keypress = 0;
for (i=2; i<9; i++) {
if (buf[i] != 0)
keypress = keymap[buf[i]];
else
break;
}
if ((keypress == -1) && (buf[2] != 0)) {
printf ("%x %x %x %x %x %x %x %x\n", buf[0], buf[1], buf[2],
buf[3], buf[4], buf[5], buf[6], buf[7]);
}
if (keypress != -1) {
/* ignore key presses if buffer full */
if (count < 16)
keybuffer[count++] = keypress;
}
}
}
static void
usb_hid_set_idle (usbdev_t *dev, interface_descriptor_t *interface, u16 duration)
{
dev_req_t dr;
dr.data_dir = host_to_device;
dr.req_type = class_type;
dr.req_recp = iface_recp;
dr.bRequest = SET_IDLE;
dr.wValue = (duration >> 2) << 8;
dr.wIndex = interface->bInterfaceNumber;
dr.wLength = 0;
dev->controller->control (dev, OUT, sizeof (dev_req_t), &dr, 0, 0);
}
static void
usb_hid_set_protocol (usbdev_t *dev, interface_descriptor_t *interface, hid_proto proto)
{
dev_req_t dr;
dr.data_dir = host_to_device;
dr.req_type = class_type;
dr.req_recp = iface_recp;
dr.bRequest = SET_PROTOCOL;
dr.wValue = proto;
dr.wIndex = interface->bInterfaceNumber;
dr.wLength = 0;
dev->controller->control (dev, OUT, sizeof (dev_req_t), &dr, 0, 0);
}
static struct console_input_driver cons = {
.havekey = usbhid_havechar,
.getchar = usbhid_getchar
};
void
usb_hid_init (usbdev_t *dev)
{
static int installed = 0;
if (!installed) {
installed = 1;
console_add_input_driver (&cons);
}
configuration_descriptor_t *cd = (configuration_descriptor_t*)dev->configuration;
interface_descriptor_t *interface = (interface_descriptor_t*)(((char *) cd) + cd->bLength);
if (interface->bInterfaceSubClass == hid_subclass_boot) {
printf (" supports boot interface..\n");
printf (" it's a %s\n",
boot_protos[interface->bInterfaceProtocol]);
if (interface->bInterfaceProtocol == hid_boot_proto_keyboard) {
dev->data = malloc (sizeof (usbhid_inst_t));
if (!dev->data)
usb_fatal("Not enough memory for USB HID device.\n");
printf (" configuring...\n");
usb_hid_set_protocol(dev, interface, hid_proto_boot);
usb_hid_set_idle(dev, interface, 0);
printf (" activating...\n");
// only add here, because we only support boot-keyboard HID devices
dev->destroy = usb_hid_destroy;
dev->poll = usb_hid_poll;
int i;
for (i = 0; i <= dev->num_endp; i++) {
if (dev->endpoints[i].endpoint == 0)
continue;
if (dev->endpoints[i].type != INTERRUPT)
continue;
if (dev->endpoints[i].direction != IN)
continue;
break;
}
printf (" found endpoint %x for interrupt-in\n", i);
/* 20 buffers of 8 bytes, for every 10 msecs */
HID_INST(dev)->queue = dev->controller->create_intr_queue (&dev->endpoints[i], 8, 20, 10);
count = 0;
printf (" configuration done.\n");
}
}
}
int usbhid_havechar (void)
{
return (count != 0);
}
int usbhid_getchar (void)
{
if (count == 0) return 0;
short ret = keybuffer[0];
memmove (keybuffer, keybuffer+1, --count);
return ret;
}
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