/* * 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 <keycodes.h> #include <usb/usb.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 }; typedef union { struct { u8 modifiers; u8 repeats; u8 keys[6]; }; u8 buffer[8]; } usb_hid_keyboard_event_t; typedef struct { void* queue; hid_descriptor_t *descriptor; usb_hid_keyboard_event_t previous; int lastkeypress; int repeat_delay; } usbhid_inst_t; #define HID_INST(dev) ((usbhid_inst_t*)(dev)->data) static void usb_hid_destroy (usbdev_t *dev) { if (HID_INST(dev)->queue) { 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; } dev->controller->destroy_intr_queue( &dev->endpoints[i], HID_INST(dev)->queue); HID_INST(dev)->queue = NULL; } free (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[] = { // #if IS_ENABLED(CONFIG_LP_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; } #define KEYBOARD_REPEAT_MS 30 #define INITIAL_REPEAT_DELAY 10 #define REPEAT_DELAY 2 static void usb_hid_process_keyboard_event(usbhid_inst_t *const inst, const usb_hid_keyboard_event_t *const current) { const usb_hid_keyboard_event_t *const previous = &inst->previous; int i, keypress = 0, modifiers = 0; 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 (inst->lastkeypress && !memcmp(current, previous, sizeof(*current))) { /* No. Then it's a key repeat event. */ if (inst->repeat_delay) { inst->repeat_delay--; } else { usb_hid_keyboard_queue(inst->lastkeypress); inst->repeat_delay = REPEAT_DELAY; } return; } inst->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 */ usb_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 */ inst->lastkeypress = keypress; inst->repeat_delay = INITIAL_REPEAT_DELAY; } } static void usb_hid_poll (usbdev_t *dev) { usb_hid_keyboard_event_t current; const u8 *buf; while ((buf=dev->controller->poll_intr_queue (HID_INST(dev)->queue))) { memcpy(¤t.buffer, buf, 8); usb_hid_process_keyboard_event(HID_INST(dev), ¤t); HID_INST(dev)->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, .input_type = CONSOLE_INPUT_TYPE_USB, }; 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]; usb_debug(" Keyboard layout '%s'\n", map->country); return 0; } usb_debug(" 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; usb_debug (" supports boot interface..\n"); usb_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"); memset(&HID_INST(dev)->previous, 0x00, sizeof(HID_INST(dev)->previous)); usb_debug (" configuring...\n"); usb_hid_set_protocol(dev, interface, hid_proto_boot); usb_hid_set_idle(dev, interface, KEYBOARD_REPEAT_MS); usb_debug (" activating...\n"); hid_descriptor_t *desc = malloc(sizeof(hid_descriptor_t)); if (!desc || get_descriptor(dev, gen_bmRequestType( device_to_host, standard_type, iface_recp), 0x21, 0, desc, sizeof(*desc)) != sizeof(*desc)) { usb_debug ("get_descriptor(HID) failed\n"); usb_detach_device (dev->controller, dev->address); return; } HID_INST (dev)->descriptor = desc; countrycode = desc->bCountryCode; /* 35 countries defined: */ if (countrycode >= ARRAY_SIZE(countries)) countrycode = 0; usb_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 = 1; i < dev->num_endp; i++) { if (dev->endpoints[i].type != INTERRUPT) continue; if (dev->endpoints[i].direction != IN) continue; break; } if (i >= dev->num_endp) { usb_debug ("Could not find HID endpoint\n"); usb_detach_device (dev->controller, dev->address); return; } usb_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; usb_debug (" configuration done.\n"); break; case hid_boot_proto_mouse: usb_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; }