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Diffstat (limited to 'quantum/os_detection.c')
| -rw-r--r-- | quantum/os_detection.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/quantum/os_detection.c b/quantum/os_detection.c new file mode 100644 index 0000000000..b1511afb14 --- /dev/null +++ b/quantum/os_detection.c @@ -0,0 +1,129 @@ +/* Copyright 2022 Ruslan Sayfutdinov (@KapJI) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "os_detection.h" + +#include <string.h> + +#ifdef OS_DETECTION_DEBUG_ENABLE +# include "eeconfig.h" +# include "eeprom.h" +# include "print.h" + +# define STORED_USB_SETUPS 50 +# define EEPROM_USER_OFFSET (uint8_t*)EECONFIG_SIZE + +uint16_t usb_setups[STORED_USB_SETUPS]; +#endif + +#ifdef OS_DETECTION_ENABLE +struct setups_data_t { + uint8_t count; + uint8_t cnt_02; + uint8_t cnt_04; + uint8_t cnt_ff; + uint16_t last_wlength; + os_variant_t detected_os; +}; + +struct setups_data_t setups_data = { + .count = 0, + .cnt_02 = 0, + .cnt_04 = 0, + .cnt_ff = 0, + .detected_os = OS_UNSURE, +}; + +// Some collected sequences of wLength can be found in tests. +void make_guess(void) { + if (setups_data.count < 3) { + return; + } + if (setups_data.cnt_ff >= 2 && setups_data.cnt_04 >= 1) { + setups_data.detected_os = OS_WINDOWS; + return; + } + if (setups_data.count == setups_data.cnt_ff) { + // Linux has 3 packets with 0xFF. + setups_data.detected_os = OS_LINUX; + return; + } + if (setups_data.count == 5 && setups_data.last_wlength == 0xFF && setups_data.cnt_ff == 1 && setups_data.cnt_02 == 2) { + setups_data.detected_os = OS_MACOS; + return; + } + if (setups_data.count == 4 && setups_data.cnt_ff == 0 && setups_data.cnt_02 == 2) { + // iOS and iPadOS don't have the last 0xFF packet. + setups_data.detected_os = OS_IOS; + return; + } + if (setups_data.cnt_ff == 0 && setups_data.cnt_02 == 3 && setups_data.cnt_04 == 1) { + // This is actually PS5. + setups_data.detected_os = OS_LINUX; + return; + } + if (setups_data.cnt_ff >= 1 && setups_data.cnt_02 == 0 && setups_data.cnt_04 == 0) { + // This is actually Quest 2 or Nintendo Switch. + setups_data.detected_os = OS_LINUX; + return; + } +} + +void process_wlength(const uint16_t w_length) { +# ifdef OS_DETECTION_DEBUG_ENABLE + usb_setups[setups_data.count] = w_length; +# endif + setups_data.count++; + setups_data.last_wlength = w_length; + if (w_length == 0x2) { + setups_data.cnt_02++; + } else if (w_length == 0x4) { + setups_data.cnt_04++; + } else if (w_length == 0xFF) { + setups_data.cnt_ff++; + } + make_guess(); +} + +os_variant_t detected_host_os(void) { + return setups_data.detected_os; +} + +void erase_wlength_data(void) { + memset(&setups_data, 0, sizeof(setups_data)); +} +#endif // OS_DETECTION_ENABLE + +#ifdef OS_DETECTION_DEBUG_ENABLE +void print_stored_setups(void) { +# ifdef CONSOLE_ENABLE + uint8_t cnt = eeprom_read_byte(EEPROM_USER_OFFSET); + for (uint16_t i = 0; i < cnt; ++i) { + uint16_t* addr = (uint16_t*)EEPROM_USER_OFFSET + i * sizeof(uint16_t) + sizeof(uint8_t); + xprintf("i: %d, wLength: 0x%02X\n", i, eeprom_read_word(addr)); + } +# endif +} + +void store_setups_in_eeprom(void) { + eeprom_update_byte(EEPROM_USER_OFFSET, setups_data.count); + for (uint16_t i = 0; i < setups_data.count; ++i) { + uint16_t* addr = (uint16_t*)EEPROM_USER_OFFSET + i * sizeof(uint16_t) + sizeof(uint8_t); + eeprom_update_word(addr, usb_setups[i]); + } +} + +#endif // OS_DETECTION_DEBUG_ENABLE |