coreboot-kgpe-d16/payloads/libpayload/drivers/usb/usbhid.c

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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008-2010 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.
*/
// #define USB_DEBUG
#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;
hid_descriptor_t *descriptor;
} usbhid_inst_t;
#define HID_INST(dev) ((usbhid_inst_t*)(dev)->data)
/* keybuffer is global to all USB keyboards */
static int keycount;
#define KEYBOARD_BUFFER_SIZE 16
static short keybuffer[KEYBOARD_BUFFER_SIZE];
const char *countries[36][2] = {
{ "not supported", "us" },
{ "Arabic", "ae" },
{ "Belgian", "be" },
{ "Canadian-Bilingual", "ca" },
{ "Canadian-French", "ca" },
{ "Czech Republic", "cz" },
{ "Danish", "dk" },
{ "Finnish", "fi" },
{ "French", "fr" },
{ "German", "de" },
{ "Greek", "gr" },
{ "Hebrew", "il" },
{ "Hungary", "hu" },
{ "International (ISO)", "iso" },
{ "Italian", "it" },
{ "Japan (Katakana)", "jp" },
{ "Korean", "us" },
{ "Latin American", "us" },
{ "Netherlands/Dutch", "nl" },
{ "Norwegian", "no" },
{ "Persian (Farsi)", "ir" },
{ "Poland", "pl" },
{ "Portuguese", "pt" },
{ "Russia", "ru" },
{ "Slovakia", "sl" },
{ "Spanish", "es" },
{ "Swedish", "se" },
{ "Swiss/French", "ch" },
{ "Swiss/German", "ch" },
{ "Switzerland", "ch" },
{ "Taiwan", "tw" },
{ "Turkish-Q", "tr" },
{ "UK", "uk" },
{ "US", "us" },
{ "Yugoslavia", "yu" },
{ "Turkish-F", "tr" },
/* 36 - 255: Reserved */
};
struct layout_maps {
const char *country;
const short map[4][0x80];
};
static const struct layout_maps *map;
static const struct layout_maps keyboard_layouts[] = {
// #ifdef CONFIG_PC_KEYBOARD_LAYOUT_US
{ .country = "us", .map = {
{ /* No modifier */
-1, -1, -1, -1, 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
/* 0x10 */
'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
'u', 'v', 'w', 'x', 'y', 'z', '1', '2',
/* 0x20 */
'3', '4', '5', '6', '7', '8', '9', '0',
'\n', '\e', '\b', '\t', ' ', '-', '=', '[',
/* 0x30 */
']', '\\', -1, ';', '\'', '`', ',', '.',
'/', -1 /* CapsLk */, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6),
/* 0x40 */
KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), KEY_F(11), KEY_F(12), KEY_PRINT, -1 /* ScrLk */,
KEY_BREAK, KEY_IC, KEY_HOME, KEY_PPAGE, KEY_DC, KEY_END, KEY_NPAGE, KEY_RIGHT,
/* 50 */
KEY_LEFT, KEY_DOWN, KEY_UP, -1 /*NumLck*/, '/', '*', '-' /* = ? */, '+',
KEY_ENTER, KEY_END, KEY_DOWN, KEY_NPAGE, KEY_LEFT, -1, KEY_RIGHT, KEY_HOME,
/* 60 */
KEY_UP, KEY_PPAGE, -1, KEY_DC, -1 /* < > | */, -1 /* Win Key Right */, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
/* 70 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
},
{ /* Shift modifier */
-1, -1, -1, -1, 'A', 'B', 'C', 'D',
'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L',
/* 0x10 */
'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
'U', 'V', 'W', 'X', 'Y', 'Z', '!', '@',
/* 0x20 */
'#', '$', '%', '^', '&', '*', '(', ')',
'\n', '\e', '\b', '\t', ' ', '-', '=', '[',
/* 0x30 */
']', '\\', -1, ':', '\'', '`', ',', '.',
'/', -1 /* CapsLk */, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6),
/* 0x40 */
KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), KEY_F(11), KEY_F(12), KEY_PRINT, -1 /* ScrLk */,
KEY_BREAK, KEY_IC, KEY_HOME, KEY_PPAGE, KEY_DC, KEY_END, KEY_NPAGE, KEY_RIGHT,
/* 50 */
KEY_LEFT, KEY_DOWN, KEY_UP, -1 /*NumLck*/, '/', '*', '-' /* = ? */, '+',
KEY_ENTER, KEY_END, KEY_DOWN, KEY_NPAGE, KEY_LEFT, -1, KEY_RIGHT, KEY_HOME,
/* 60 */
KEY_UP, KEY_PPAGE, -1, KEY_DC, -1 /* < > | */, -1 /* Win Key Right */, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
/* 70 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
},
{ /* Alt */
-1, -1, -1, -1, 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
/* 0x10 */
'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
'u', 'v', 'w', 'x', 'y', 'z', '1', '2',
/* 0x20 */
'3', '4', '5', '6', '7', '8', '9', '0',
'\n', '\e', '\b', '\t', ' ', '-', '=', '[',
/* 0x30 */
']', '\\', -1, ';', '\'', '`', ',', '.',
'/', -1 /* CapsLk */, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6),
/* 0x40 */
KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), KEY_F(11), KEY_F(12), KEY_PRINT, -1 /* ScrLk */,
KEY_BREAK, KEY_IC, KEY_HOME, KEY_PPAGE, KEY_DC, KEY_END, KEY_NPAGE, KEY_RIGHT,
/* 50 */
KEY_LEFT, KEY_DOWN, KEY_UP, -1 /*NumLck*/, '/', '*', '-' /* = ? */, '+',
KEY_ENTER, KEY_END, KEY_DOWN, KEY_NPAGE, KEY_LEFT, -1, KEY_RIGHT, KEY_HOME,
/* 60 */
KEY_UP, KEY_PPAGE, -1, KEY_DC, -1 /* < > | */, -1 /* Win Key Right */, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
/* 70 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
},
{ /* Shift+Alt modifier */
-1, -1, -1, -1, 'A', 'B', 'C', 'D',
'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L',
/* 0x10 */
'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
'U', 'V', 'W', 'X', 'Y', 'Z', '!', '@',
/* 0x20 */
'#', '$', '%', '^', '&', '*', '(', ')',
'\n', '\e', '\b', '\t', ' ', '-', '=', '[',
/* 0x30 */
']', '\\', -1, ':', '\'', '`', ',', '.',
'/', -1 /* CapsLk */, KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6),
/* 0x40 */
KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10), KEY_F(11), KEY_F(12), KEY_PRINT, -1 /* ScrLk */,
KEY_BREAK, KEY_IC, KEY_HOME, KEY_PPAGE, KEY_DC, KEY_END, KEY_NPAGE, KEY_RIGHT,
/* 50 */
KEY_LEFT, KEY_DOWN, KEY_UP, -1 /*NumLck*/, '/', '*', '-' /* = ? */, '+',
KEY_ENTER, KEY_END, KEY_DOWN, KEY_NPAGE, KEY_LEFT, -1, KEY_RIGHT, KEY_HOME,
/* 60 */
KEY_UP, KEY_PPAGE, -1, KEY_DC, -1 /* < > | */, -1 /* Win Key Right */, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
/* 70 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
}
}},
//#endif
};
#define MOD_SHIFT (1 << 0)
#define MOD_ALT (1 << 1)
#define MOD_CTRL (1 << 2)
static void usb_hid_keyboard_queue(int ch) {
/* ignore key presses if buffer full */
if (keycount < KEYBOARD_BUFFER_SIZE)
keybuffer[keycount++] = ch;
}
typedef union {
struct {
u8 modifiers;
u8 repeats;
u8 keys[6];
};
u8 buffer[8];
} usb_hid_keyboard_event_t;
#define KEYBOARD_REPEAT_MS 30
#define INITIAL_REPEAT_DELAY 10
#define REPEAT_DELAY 2
static void
usb_hid_process_keyboard_event(usb_hid_keyboard_event_t *current,
usb_hid_keyboard_event_t *previous)
{
int i, keypress = 0, modifiers = 0;
static int lastkeypress = 0, repeat_delay = INITIAL_REPEAT_DELAY;
if (current->modifiers & 0x01) /* Left-Ctrl */ modifiers |= MOD_CTRL;
if (current->modifiers & 0x02) /* Left-Shift */ modifiers |= MOD_SHIFT;
if (current->modifiers & 0x04) /* Left-Alt */ modifiers |= MOD_ALT;
if (current->modifiers & 0x08) /* Left-GUI */ ;
if (current->modifiers & 0x10) /* Right-Ctrl */ modifiers |= MOD_CTRL;
if (current->modifiers & 0x20) /* Right-Shift */ modifiers |= MOD_SHIFT;
if (current->modifiers & 0x40) /* Right-AltGr */ modifiers |= MOD_ALT;
if (current->modifiers & 0x80) /* Right-GUI */ ;
if ((current->modifiers & 0x05) && ((current->keys[0] == 0x4c) ||
(current->keys[0]==0x63))) {
/* vulcan nerve pinch */
if (reset_handler)
reset_handler();
}
/* Did the event change at all? */
if (lastkeypress && !memcmp(current, previous, sizeof(usb_hid_keyboard_event_t))) {
/* No. Then it's a key repeat event. */
if (repeat_delay) {
repeat_delay--;
} else {
usb_hid_keyboard_queue(lastkeypress);
repeat_delay = REPEAT_DELAY;
}
return;
}
lastkeypress = 0;
for (i=0; i<6; i++) {
int j;
int skip = 0;
// No more keys? skip
if (current->keys[i] == 0)
return;
for (j=0; j<6; j++) {
if (current->keys[i] == previous->keys[j]) {
skip = 1;
break;
}
}
if (skip)
continue;
/* Mask off MOD_CTRL */
keypress = map->map[modifiers & 0x03][current->keys[i]];
if (modifiers & MOD_CTRL) {
switch (keypress) {
case 'a' ... 'z':
keypress &= 0x1f;
break;
default:
continue;
}
}
if (keypress == -1) {
/* Debug: Print unknown keys */
debug ("usbhid: <%x> %x [ %x %x %x %x %x %x ] %d\n",
current->modifiers, current->repeats,
current->keys[0], current->keys[1],
current->keys[2], current->keys[3],
current->keys[4], current->keys[5], i);
/* Unknown key? Try next one in the queue */
continue;
}
usb_hid_keyboard_queue(keypress);
/* Remember for authentic key repeat */
lastkeypress = keypress;
repeat_delay = INITIAL_REPEAT_DELAY;
}
}
static void
usb_hid_poll (usbdev_t *dev)
{
usb_hid_keyboard_event_t current;
static usb_hid_keyboard_event_t previous = {
.buffer = { 0, 0, 0, 0, 0, 0, 0, 0}
};
u8* buf;
while ((buf=dev->controller->poll_intr_queue (HID_INST(dev)->queue))) {
memcpy(&current.buffer, buf, 8);
usb_hid_process_keyboard_event(&current, &previous);
previous = current;
}
}
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
};
static int usb_hid_set_layout (const char *country)
{
/* FIXME should be per keyboard */
int i;
for (i=0; i<ARRAY_SIZE(keyboard_layouts); i++) {
if (strncmp(keyboard_layouts[i].country, country,
strlen(keyboard_layouts[i].country)))
continue;
/* Found, changing keyboard layout */
map = &keyboard_layouts[i];
printf(" Keyboard layout '%s'\n", map->country);
return 0;
}
printf(" Keyboard layout '%s' not found, using '%s'\n",
country, map->country);
/* Nothing found, not changed */
return -1;
}
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) {
u8 countrycode;
debug (" supports boot interface..\n");
debug (" it's a %s\n",
boot_protos[interface->bInterfaceProtocol]);
switch (interface->bInterfaceProtocol) {
case hid_boot_proto_keyboard:
dev->data = malloc (sizeof (usbhid_inst_t));
if (!dev->data)
fatal("Not enough memory for USB HID device.\n");
debug (" configuring...\n");
usb_hid_set_protocol(dev, interface, hid_proto_boot);
usb_hid_set_idle(dev, interface, KEYBOARD_REPEAT_MS);
debug (" activating...\n");
HID_INST (dev)->descriptor =
(hid_descriptor_t *)
get_descriptor(dev, gen_bmRequestType
(device_to_host, standard_type, iface_recp),
0x21, 0, 0);
countrycode = HID_INST(dev)->descriptor->bCountryCode;
/* 35 countries defined: */
if (countrycode > 35)
countrycode = 0;
debug (" Keyboard has %s layout (country code %02x)\n",
countries[countrycode][0], countrycode);
/* Set keyboard layout accordingly */
usb_hid_set_layout(countries[countrycode][1]);
// 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;
}
debug (" 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);
keycount = 0;
debug (" configuration done.\n");
break;
case hid_boot_proto_mouse:
debug("NOTICE: USB mice are not supported.\n");
break;
}
}
}
int usbhid_havechar (void)
{
return (keycount != 0);
}
int usbhid_getchar (void)
{
short ret;
if (keycount == 0)
return 0;
ret = keybuffer[0];
memmove(keybuffer, keybuffer + 1, --keycount);
return (int)ret;
}