| /* |
| * |
| * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| * Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org> |
| * |
| * 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 <stdbool.h> |
| #include <stdint.h> |
| |
| #include <keycodes.h> |
| #include <libpayload-config.h> |
| #include <libpayload.h> |
| |
| #include "i8042.h" |
| |
| #ifdef DEBUG |
| #define debug(x...) printf(x) |
| #else |
| #define debug(x...) do {} while (0) |
| #endif |
| |
| #define POWER_BUTTON 0x90 |
| #define MEDIA_KEY_PREFIX 0xE0 |
| |
| struct layout_maps { |
| const char *country; |
| const unsigned short map[4][0x59]; |
| }; |
| |
| static struct layout_maps *map; |
| static int modifier = 0; |
| int (*media_key_mapping_callback)(char ch); |
| |
| static struct layout_maps keyboard_layouts[] = { |
| #if CONFIG(LP_PC_KEYBOARD_LAYOUT_US) |
| { .country = "us", .map = { |
| { /* No modifier */ |
| 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, |
| 0x37, 0x38, 0x39, 0x30, 0x2D, 0x3D, 0x08, 0x09, |
| 0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69, |
| 0x6F, 0x70, 0x5B, 0x5D, 0x0A, 0x00, 0x61, 0x73, |
| 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B, |
| 0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76, |
| 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11), |
| KEY_F(12), |
| }, |
| { /* Shift */ |
| 0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E, |
| 0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00, |
| 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49, |
| 0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53, |
| 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A, |
| 0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56, |
| 0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11), |
| KEY_F(12), |
| }, |
| { /* ALT */ |
| 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, |
| 0x37, 0x38, 0x39, 0x30, 0x2D, 0x3D, 0x08, 0x09, |
| 0x71, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69, |
| 0x6F, 0x70, 0x5B, 0x5D, 0x0A, 0x00, 0x61, 0x73, |
| 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B, |
| 0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76, |
| 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11), |
| KEY_F(12), |
| }, |
| { /* Shift-ALT */ |
| 0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E, |
| 0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00, |
| 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49, |
| 0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53, |
| 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A, |
| 0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56, |
| 0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11), |
| KEY_F(12), |
| } |
| }}, |
| #endif |
| #if CONFIG(LP_PC_KEYBOARD_LAYOUT_DE) |
| { .country = "de", .map = { |
| { /* No modifier */ |
| 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, |
| 0x37, 0x38, 0x39, 0x30, 0x00, 0x27, 0x08, 0x09, |
| 0x71, 0x77, 0x65, 0x72, 0x74, 0x7A, 0x75, 0x69, |
| 0x6F, 0x70, 0x00, 0x2B, 0x0A, 0x00, 0x61, 0x73, |
| 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x00, |
| 0x00, 0x5E, 0x00, 0x23, 0x79, 0x78, 0x63, 0x76, |
| 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2D, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x3C, KEY_F(11), |
| KEY_F(12), |
| }, |
| { /* Shift */ |
| 0x00, 0x1B, 0x21, 0x22, 0xA7, 0x24, 0x25, 0x26, |
| 0x2F, 0x28, 0x29, 0x3D, 0x3F, 0x60, 0x08, 0x00, |
| 0x51, 0x57, 0x45, 0x52, 0x54, 0x5A, 0x55, 0x49, |
| 0x4F, 0x50, 0x00, 0x2A, 0x0A, 0x00, 0x41, 0x53, |
| 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x00, |
| 0x00, 0x7E, 0x00, 0x27, 0x59, 0x58, 0x43, 0x56, |
| 0x42, 0x4E, 0x4D, 0x3B, 0x3A, 0x5F, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x3E, KEY_F(11), |
| KEY_F(12), |
| }, |
| { /* ALT */ |
| 0x00, 0x1B, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, |
| 0x7B, 0x5B, 0x5D, 0x7D, 0x5C, 0x3D, 0x08, 0x09, |
| 0x40, 0x77, 0x65, 0x72, 0x74, 0x79, 0x75, 0x69, |
| 0x6F, 0x70, 0x5B, 0x7E, 0x0A, 0x00, 0x61, 0x73, |
| 0x64, 0x66, 0x67, 0x68, 0x6A, 0x6B, 0x6C, 0x3B, |
| 0x27, 0x60, 0x00, 0x5C, 0x7A, 0x78, 0x63, 0x76, |
| 0x62, 0x6E, 0x6D, 0x2C, 0x2E, 0x2F, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x7C, KEY_F(11), |
| KEY_F(12), |
| }, |
| { /* Shift-ALT */ |
| /* copied from US */ |
| 0x00, 0x1B, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5E, |
| 0x26, 0x2A, 0x28, 0x29, 0x5F, 0x2B, 0x08, 0x00, |
| 0x51, 0x57, 0x45, 0x52, 0x54, 0x59, 0x55, 0x49, |
| 0x4F, 0x50, 0x7B, 0x7D, 0x0A, 0x00, 0x41, 0x53, |
| 0x44, 0x46, 0x47, 0x48, 0x4A, 0x4B, 0x4C, 0x3A, |
| 0x22, 0x7E, 0x00, 0x7C, 0x5A, 0x58, 0x43, 0x56, |
| 0x42, 0x4E, 0x4D, 0x3C, 0x3E, 0x3F, 0x00, 0x2A, |
| 0x00, 0x20, 0x00, 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), 0x00, 0x00, KEY_HOME, |
| KEY_UP, KEY_NPAGE, 0x00, KEY_LEFT, 0x00, KEY_RIGHT, 0x00, KEY_END, |
| KEY_DOWN, KEY_PPAGE, 0x00, KEY_DC, 0x00, 0x00, 0x00, KEY_F(11), |
| KEY_F(12), |
| } |
| }}, |
| #endif |
| }; |
| |
| static void keyboard_drain_input(void) |
| { |
| while (i8042_data_ready_ps2()) |
| (void)i8042_read_data_ps2(); |
| } |
| |
| static bool keyboard_cmd(unsigned char cmd) |
| { |
| const uint64_t timeout_us = cmd == I8042_KBCMD_RESET ? 1*1000*1000 : 200*1000; |
| const uint64_t start_time = timer_us(0); |
| |
| i8042_write_data(cmd); |
| |
| do { |
| if (!i8042_data_ready_ps2()) { |
| udelay(50); |
| continue; |
| } |
| |
| const uint8_t data = i8042_read_data_ps2(); |
| switch (data) { |
| case 0xfa: |
| return true; |
| case 0xfe: |
| return false; |
| default: |
| /* Warn only if we already disabled keyboard input. */ |
| if (cmd != I8042_KBCMD_DEFAULT_DIS) |
| debug("WARNING: Keyboard sent spurious 0x%02x.\n", data); |
| break; |
| } |
| } while (timer_us(start_time) < timeout_us); |
| |
| debug("ERROR: Keyboard command timed out.\n"); |
| return false; |
| } |
| |
| static bool set_scancode_set(const unsigned char set) |
| { |
| bool ret; |
| |
| if (set < 1 || set > 3) |
| return false; |
| |
| ret = keyboard_cmd(I8042_KBCMD_SET_SCANCODE); |
| if (!ret) { |
| debug("ERROR: Keyboard set scancode failed!\n"); |
| return ret; |
| } |
| |
| ret = keyboard_cmd(set); |
| if (!ret) { |
| debug("ERROR: Keyboard scancode set#%u failed!\n", set); |
| return ret; |
| } |
| |
| return ret; |
| } |
| |
| static bool keyboard_peek_echo_result(void) |
| { |
| const uint8_t ch = i8042_peek_data_ps2(); |
| return ch == 0xee || ch == 0xfe; |
| } |
| |
| static enum keyboard_state { |
| STATE_INIT = 0, |
| STATE_SIMPLIFIED_INIT, |
| STATE_HOTPLUG, |
| STATE_HOTPLUG_ECHO, |
| STATE_DISABLE_SCAN, |
| STATE_DRAIN_INPUT, |
| STATE_DISABLE_TRANSLATION, |
| STATE_START_SELF_TEST, |
| STATE_SELF_TEST, |
| STATE_CONFIGURE, |
| STATE_CONFIGURE_SET1, |
| STATE_ENABLE_TRANSLATION, |
| STATE_ENABLE_SCAN, |
| STATE_RUNNING, |
| STATE_RUNNING_ECHO, |
| STATE_DETENTION, |
| } keyboard_state; |
| |
| #define STATE_NAMES_ENTRY(name) [STATE_##name] = #name |
| static const char *const state_names[] = { |
| STATE_NAMES_ENTRY(INIT), |
| STATE_NAMES_ENTRY(SIMPLIFIED_INIT), |
| STATE_NAMES_ENTRY(HOTPLUG), |
| STATE_NAMES_ENTRY(HOTPLUG_ECHO), |
| STATE_NAMES_ENTRY(DISABLE_SCAN), |
| STATE_NAMES_ENTRY(DRAIN_INPUT), |
| STATE_NAMES_ENTRY(DISABLE_TRANSLATION), |
| STATE_NAMES_ENTRY(START_SELF_TEST), |
| STATE_NAMES_ENTRY(SELF_TEST), |
| STATE_NAMES_ENTRY(CONFIGURE), |
| STATE_NAMES_ENTRY(CONFIGURE_SET1), |
| STATE_NAMES_ENTRY(ENABLE_TRANSLATION), |
| STATE_NAMES_ENTRY(ENABLE_SCAN), |
| STATE_NAMES_ENTRY(RUNNING), |
| STATE_NAMES_ENTRY(RUNNING_ECHO), |
| STATE_NAMES_ENTRY(DETENTION), |
| }; |
| |
| __attribute__((unused)) |
| static const char *state_name(enum keyboard_state state) |
| { |
| if (state >= ARRAY_SIZE(state_names) || !state_names[state]) |
| return "<unknown>"; |
| return state_names[state]; |
| } |
| |
| static uint64_t keyboard_time; |
| static uint64_t state_time; |
| |
| static void keyboard_poll(void) |
| { |
| enum keyboard_state next_state = keyboard_state; |
| unsigned int i; |
| |
| switch (keyboard_state) { |
| |
| case STATE_INIT: |
| /* Wait until keyboard_init() has been called. */ |
| break; |
| |
| case STATE_SIMPLIFIED_INIT: |
| /* On the first try, start opportunistically, do |
| the first steps at once and skip the self-test. */ |
| (void)keyboard_cmd(I8042_KBCMD_DEFAULT_DIS); |
| keyboard_drain_input(); |
| (void)i8042_set_kbd_translation(false); |
| next_state = STATE_CONFIGURE; |
| break; |
| |
| case STATE_HOTPLUG: |
| if (timer_us(state_time) > 1*1000*1000) { |
| i8042_write_data(I8042_KBCMD_ECHO); |
| next_state = STATE_HOTPLUG_ECHO; |
| } |
| break; |
| |
| case STATE_HOTPLUG_ECHO: |
| if (!i8042_data_ready_ps2()) { |
| if (timer_us(state_time) > 200*1000) |
| next_state = STATE_HOTPLUG; |
| break; |
| } |
| |
| if (keyboard_peek_echo_result()) { |
| next_state = STATE_DISABLE_SCAN; |
| keyboard_time = timer_us(0); |
| } |
| (void)i8042_read_data_ps2(); |
| |
| break; |
| |
| case STATE_DISABLE_SCAN: |
| (void)keyboard_cmd(I8042_KBCMD_DEFAULT_DIS); |
| next_state = STATE_DRAIN_INPUT; |
| break; |
| |
| case STATE_DRAIN_INPUT: |
| /* Limit number of bytes drained per poll. */ |
| for (i = 0; i < 50 && i8042_data_ready_ps2(); ++i) |
| (void)i8042_read_data_ps2(); |
| if (i == 0) |
| next_state = STATE_DISABLE_TRANSLATION; |
| break; |
| |
| case STATE_DISABLE_TRANSLATION: |
| /* Be opportunistic and assume it's disabled on failure. */ |
| (void)i8042_set_kbd_translation(false); |
| next_state = STATE_START_SELF_TEST; |
| break; |
| |
| case STATE_START_SELF_TEST: |
| if (!keyboard_cmd(I8042_KBCMD_RESET)) |
| debug("ERROR: Keyboard self-test couldn't be started.\n"); |
| /* We ignore errors and always move to the self-test state |
| which will simply try again if necessary. */ |
| next_state = STATE_SELF_TEST; |
| break; |
| |
| case STATE_SELF_TEST: |
| if (!i8042_data_ready_ps2()) { |
| if (timer_us(state_time) > 5*1000*1000) { |
| debug("WARNING: Keyboard self-test timed out.\n"); |
| next_state = STATE_DISABLE_SCAN; |
| } |
| break; |
| } |
| |
| const uint8_t self_test_result = i8042_read_data_ps2(); |
| switch (self_test_result) { |
| case 0xaa: |
| debug("INFO: Keyboard self-test succeeded.\n"); |
| next_state = STATE_CONFIGURE; |
| break; |
| case 0xfc: |
| case 0xfd: |
| /* Failure. Try again. */ |
| debug("WARNING: Keyboard self-test failed.\n"); |
| next_state = STATE_START_SELF_TEST; |
| break; |
| default: |
| debug("WARNING: Keyboard self-test received spurious 0x%02x\n", |
| self_test_result); |
| break; |
| } |
| break; |
| |
| case STATE_CONFIGURE: |
| if (set_scancode_set(2)) |
| next_state = STATE_ENABLE_TRANSLATION; |
| else |
| next_state = STATE_CONFIGURE_SET1; |
| break; |
| |
| case STATE_CONFIGURE_SET1: |
| if (!set_scancode_set(1)) { |
| debug("ERROR: Keyboard failed to set any scancode set.\n"); |
| next_state = STATE_DISABLE_SCAN; |
| break; |
| } |
| |
| next_state = STATE_ENABLE_SCAN; |
| break; |
| |
| case STATE_ENABLE_TRANSLATION: |
| if (i8042_set_kbd_translation(true) != 0) { |
| debug("ERROR: Keyboard controller set translation failed!\n"); |
| next_state = STATE_DISABLE_SCAN; |
| break; |
| } |
| |
| next_state = STATE_ENABLE_SCAN; |
| break; |
| |
| case STATE_ENABLE_SCAN: |
| if (!keyboard_cmd(I8042_KBCMD_EN)) { |
| debug("ERROR: Keyboard enable scanning failed!\n"); |
| next_state = STATE_DISABLE_SCAN; |
| break; |
| } |
| |
| next_state = STATE_RUNNING; |
| break; |
| |
| case STATE_RUNNING: |
| if (!i8042_data_ready_ps2()) { |
| if (timer_us(state_time) > 500*1000) { |
| i8042_write_data(I8042_KBCMD_ECHO); |
| next_state = STATE_RUNNING_ECHO; |
| } |
| } else { |
| state_time = timer_us(0); |
| } |
| break; |
| |
| case STATE_RUNNING_ECHO: |
| if (!i8042_data_ready_ps2()) { |
| if (timer_us(state_time) > 200*1000) { |
| debug("INFO: Keyboard echo timed out.\n"); |
| next_state = STATE_HOTPLUG; |
| } |
| break; |
| } |
| |
| if (keyboard_peek_echo_result()) { |
| (void)i8042_read_data_ps2(); |
| next_state = STATE_RUNNING; |
| } |
| |
| state_time = timer_us(0); |
| break; |
| |
| case STATE_DETENTION: |
| if (timer_us(state_time) > 5*1000*1000) |
| next_state = STATE_HOTPLUG; |
| break; |
| |
| } |
| |
| switch (next_state) { |
| case STATE_INIT: |
| case STATE_HOTPLUG: |
| case STATE_HOTPLUG_ECHO: |
| case STATE_RUNNING: |
| case STATE_RUNNING_ECHO: |
| case STATE_DETENTION: |
| break; |
| default: |
| if (timer_us(keyboard_time) > 30*1000*1000) |
| next_state = STATE_DETENTION; |
| break; |
| } |
| |
| if (keyboard_state != next_state) { |
| debug("INFO: Keyboard advancing state to '%s'.\n", state_name(next_state)); |
| keyboard_state = next_state; |
| state_time = timer_us(0); |
| } |
| } |
| |
| bool keyboard_havechar(void) |
| { |
| keyboard_poll(); |
| return i8042_data_ready_ps2() && |
| (keyboard_state == STATE_RUNNING || |
| (keyboard_state == STATE_RUNNING_ECHO && !keyboard_peek_echo_result())); |
| } |
| |
| unsigned char keyboard_get_scancode(void) |
| { |
| unsigned char ch; |
| |
| while (!keyboard_havechar()) ; |
| |
| ch = i8042_read_data_ps2(); |
| |
| switch (ch) { |
| case 0x36: |
| case 0x2a: |
| modifier |= KB_MOD_SHIFT; |
| break; |
| case 0x80 | 0x36: |
| case 0x80 | 0x2a: |
| modifier &= ~KB_MOD_SHIFT; |
| break; |
| case 0x38: |
| modifier |= KB_MOD_ALT; |
| break; |
| case 0x80 | 0x38: |
| modifier &= ~KB_MOD_ALT; |
| break; |
| case 0x1d: |
| modifier |= KB_MOD_CTRL; |
| break; |
| case 0x80 | 0x1d: |
| modifier &= ~KB_MOD_CTRL; |
| break; |
| case 0x3a: |
| if (modifier & KB_MOD_CAPSLOCK) { |
| modifier &= ~KB_MOD_CAPSLOCK; |
| if (keyboard_cmd(I8042_KBCMD_SET_MODE_IND)) |
| keyboard_cmd(I8042_MODE_CAPS_LOCK_OFF); |
| } else { |
| modifier |= KB_MOD_CAPSLOCK; |
| if (keyboard_cmd(I8042_KBCMD_SET_MODE_IND)) |
| keyboard_cmd(I8042_MODE_CAPS_LOCK_ON); |
| } |
| break; |
| } |
| |
| return ch; |
| } |
| |
| int keyboard_getmodifier(void) |
| { |
| return modifier; |
| } |
| |
| void initialize_keyboard_media_key_mapping_callback(int (*media_key_mapper)(char)) |
| { |
| media_key_mapping_callback = media_key_mapper; |
| } |
| |
| int keyboard_getchar(void) |
| { |
| unsigned char ch; |
| int shift; |
| int ret = 0; |
| |
| while (!keyboard_havechar()) ; |
| |
| ch = keyboard_get_scancode(); |
| if ((media_key_mapping_callback != NULL) && (ch == MEDIA_KEY_PREFIX)) { |
| ch = keyboard_get_scancode(); |
| return media_key_mapping_callback(ch); |
| } |
| |
| if (!(ch & 0x80) && ch < 0x59) { |
| shift = |
| (modifier & KB_MOD_SHIFT) ^ (modifier & KB_MOD_CAPSLOCK) ? 1 : 0; |
| |
| if (modifier & KB_MOD_ALT) |
| shift += 2; |
| |
| ret = map->map[shift][ch]; |
| |
| if (modifier & KB_MOD_CTRL) { |
| switch (ret) { |
| case 'a' ... 'z': |
| ret &= 0x1f; |
| break; |
| case KEY_DC: |
| /* vulcan nerve pinch */ |
| if ((modifier & KB_MOD_ALT) && reset_handler) |
| reset_handler(); |
| /* fallthrough */ |
| default: |
| ret = 0; |
| } |
| } |
| } |
| |
| if (ch == 0x5e) |
| ret = POWER_BUTTON; |
| |
| return ret; |
| } |
| |
| /** |
| * Set keyboard layout |
| * @param country string describing the keyboard layout language. |
| * Valid values are "us", "de". |
| */ |
| |
| int keyboard_set_layout(char *country) |
| { |
| 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]; |
| return 0; |
| } |
| |
| /* Nothing found, not changed */ |
| return -1; |
| } |
| |
| static struct console_input_driver cons = { |
| .havekey = (int (*)(void))keyboard_havechar, |
| .getchar = keyboard_getchar, |
| .input_type = CONSOLE_INPUT_TYPE_EC, |
| }; |
| |
| void keyboard_init(void) |
| { |
| if (keyboard_state != STATE_INIT) |
| return; |
| |
| map = &keyboard_layouts[0]; |
| |
| /* Initialized keyboard controller. */ |
| if (!i8042_probe() || !i8042_has_ps2()) |
| return; |
| |
| /* Enable first PS/2 port */ |
| i8042_cmd(I8042_CMD_EN_KB); |
| |
| keyboard_state = STATE_SIMPLIFIED_INIT; |
| keyboard_time = state_time = timer_us(0); |
| |
| console_add_input_driver(&cons); |
| } |
| |
| void keyboard_disconnect(void) |
| { |
| /* If 0x64 returns 0xff, then we have no keyboard |
| * controller */ |
| if (inb(0x64) == 0xFF) |
| return; |
| |
| if (!i8042_has_ps2()) |
| return; |
| |
| /* Disable scanning */ |
| keyboard_cmd(I8042_KBCMD_DEFAULT_DIS); |
| keyboard_drain_input(); |
| |
| /* Send keyboard disconnect command */ |
| i8042_cmd(I8042_CMD_DIS_KB); |
| |
| /* Hand off with empty buffer */ |
| keyboard_drain_input(); |
| |
| /* Release keyboard controller driver */ |
| i8042_close(); |
| |
| keyboard_state = STATE_INIT; |
| } |