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Diffstat (limited to 'src/dev/ps2.cc')
| -rw-r--r-- | src/dev/ps2.cc | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/src/dev/ps2.cc b/src/dev/ps2.cc new file mode 100644 index 000000000..fe90ce6bc --- /dev/null +++ b/src/dev/ps2.cc @@ -0,0 +1,200 @@ +/* + * Copyright (c) 2011 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * 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; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT + * OWNER 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. + * + * Authors: Ali Saidi + */ + +#include <list> +#include "x11keysym/keysym.h" + +#include "base/misc.hh" +#include "dev/ps2.hh" + + +namespace Ps2 { + +/** Table to convert simple key symbols (0x00XX) into ps2 bytes. Lower byte + * is the scan code to send and upper byte is if a modifier is required to + * generate it. The table generates us keyboard codes, (e.g. the guest is + * supposed to recognize the keyboard as en_US). A new table would be required + * for another locale. + */ + +static const uint16_t keySymToPs2Byte[128] = { +// 0 / 8 1 / 9 2 / A 3 / B 4 / C 5 / D 6 / E 7 / F + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, // 0x00-0x07 + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, // 0x08-0x0f + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, // 0x10-0x17 + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, // 0x18-0x1f + 0x0029, 0x0116, 0x0152, 0x0126, 0x0125, 0x012e, 0x013d, 0x0052, // 0x20-0x27 + 0x0146, 0x0145, 0x013e, 0x0155, 0x0041, 0x004e, 0x0049, 0x004a, // 0x28-0x2f + 0x0045, 0x0016, 0x001e, 0x0026, 0x0025, 0x002e, 0x0036, 0x003d, // 0x30-0x37 + 0x003e, 0x0046, 0x014c, 0x004c, 0x0141, 0x0055, 0x0149, 0x014a, // 0x38-0x3f + 0x011e, 0x011c, 0x0132, 0x0121, 0x0123, 0x0124, 0x012b, 0x0134, // 0x40-0x47 + 0x0133, 0x0143, 0x013b, 0x0142, 0x014b, 0x013a, 0x0131, 0x0144, // 0x48-0x4f + 0x014d, 0x0115, 0x012d, 0x011b, 0x012c, 0x013c, 0x012a, 0x011d, // 0x50-0x57 + 0x0122, 0x0135, 0x011a, 0x0054, 0x005d, 0x005b, 0x0136, 0x014e, // 0x58-0x5f + 0x000e, 0x001c, 0x0032, 0x0021, 0x0023, 0x0024, 0x002b, 0x0034, // 0x60-0x67 + 0x0033, 0x0043, 0x003b, 0x0042, 0x004b, 0x003a, 0x0031, 0x0044, // 0x68-0x6f + 0x004d, 0x0015, 0x002d, 0x001b, 0x002c, 0x003c, 0x002a, 0x001d, // 0x70-0x77 + 0x0022, 0x0035, 0x001a, 0x0154, 0x015d, 0x015b, 0x010e, 0x0000 // 0x78-0x7f +}; + +const uint8_t ShiftKey = 0x12; +const uint8_t BreakKey = 0xf0; +const uint8_t ExtendedKey = 0xe0; +const uint32_t UpperKeys = 0xff00; + +void +keySymToPs2(uint32_t key, bool down, bool &cur_shift, + std::list<uint8_t> &keys) +{ + if (key <= XK_asciitilde) { + uint16_t tmp = keySymToPs2Byte[key]; + uint8_t code = tmp & 0xff; + bool shift = tmp >> 8; + + if (down) { + if (!cur_shift && shift) { + keys.push_back(ShiftKey); + cur_shift = true; + } + keys.push_back(code); + } else { + if (cur_shift && !shift) { + keys.push_back(BreakKey); + keys.push_back(ShiftKey); + cur_shift = false; + } + keys.push_back(BreakKey); + keys.push_back(code); + } + } else { + if ((key & UpperKeys) == UpperKeys) { + bool extended = false; + switch (key) { + case XK_BackSpace: + keys.push_back(0x66); + break; + case XK_Tab: + keys.push_back(0x0d); + break; + case XK_Return: + keys.push_back(0x5a); + break; + case XK_Escape: + keys.push_back(0x76); + break; + case XK_Delete: + extended = true; + keys.push_back(0x71); + break; + case XK_Home: + extended = true; + keys.push_back(0x6c); + break; + case XK_Left: + extended = true; + keys.push_back(0x6b); + break; + case XK_Right: + extended = true; + keys.push_back(0x74); + break; + case XK_Down: + extended = true; + keys.push_back(0x72); + break; + case XK_Up: + extended = true; + keys.push_back(0x75); + break; + case XK_Page_Up: + extended = true; + keys.push_back(0x7d); + break; + case XK_Page_Down: + extended = true; + keys.push_back(0x7a); + break; + case XK_End: + extended = true; + keys.push_back(0x69); + break; + case XK_Shift_L: + keys.push_back(0x12); + if (down) + cur_shift = true; + else + cur_shift = false; + break; + case XK_Shift_R: + keys.push_back(0x59); + if (down) + cur_shift = true; + else + cur_shift = false; + break; + case XK_Control_L: + keys.push_back(0x14); + break; + case XK_Control_R: + extended = true; + keys.push_back(0x14); + break; + default: + warn("Unknown extended key %#x\n", key); + return; + } + + if (extended) { + if (down) { + keys.push_front(ExtendedKey); + } else { + keys.push_front(BreakKey); + keys.push_front(ExtendedKey); + } + } else { + if (!down) + keys.push_front(BreakKey); + } + } // upper keys + } // extended keys + return; +} + +} /* namespace Ps2 */ + |