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[Voyageurs] Send USB keypress data to the keyboard driver.

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This commit is contained in:
Drew Galbraith 2024-02-24 14:59:33 -08:00
parent 3c1e435e04
commit 02d4f8c80e
10 changed files with 79 additions and 20 deletions
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49
sys/voyageurs/keyboard/keyboard_driver.cpp
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@ -2,13 +2,24 @@
#include <mammoth/util/debug.h>
namespace {
KeyboardDriver* gKeyboardDriver = nullptr;
}
void InterruptEnter(void* void_keyboard) {
KeyboardDriver* keyboard = static_cast<KeyboardDriver*>(void_keyboard);
keyboard->InterruptLoop();
}
KeyboardDriver::KeyboardDriver() { check(ZIrqRegister(kZIrqKbd, &irq_cap_)); }
KeyboardDriver::KeyboardDriver() {
check(ZPortCreate(&port_cap_));
gKeyboardDriver = this;
}
z_cap_t KeyboardDriver::GetPortCap() { return gKeyboardDriver->port_cap_; }
void KeyboardDriver::RegisterListener(uint64_t port_cap) {
listeners_.PushFront(mmth::PortClient::AdoptPort(port_cap));
@ -21,13 +32,37 @@ Thread KeyboardDriver::StartInterruptLoop() {
void KeyboardDriver::InterruptLoop() {
dbgln("Interrupt");
while (true) {
uint8_t scancode;
uint64_t num_bytes = 1;
uint64_t scancode;
uint64_t num_bytes = 8;
uint64_t num_caps = 0;
check(ZPortRecv(irq_cap_, &num_bytes, &scancode, &num_caps, nullptr));
check(ZPortRecv(port_cap_, &num_bytes, &scancode, &num_caps, nullptr));
for (mmth::PortClient& client : listeners_) {
client.WriteByte(scancode);
}
ProcessInput(scancode);
}
}
void KeyboardDriver::ProcessInput(uint64_t input) {
uint64_t new_bitmap = 0;
for (uint8_t i = 2; i < 8; i++) {
uint8_t code = (input >> (8 * i)) & 0xFF;
if (code == 0) {
break;
}
if (code >= 64) {
dbgln("Skipping keycode: {x}", code);
}
uint64_t bit = 1 << code;
new_bitmap |= bit;
if ((bitmap_ & bit) != bit) {
SendKeypress(code);
}
}
bitmap_ = new_bitmap;
}
void KeyboardDriver::SendKeypress(uint8_t scancode) {
dbgln("{x}", scancode);
for (mmth::PortClient& client : listeners_) {
client.WriteByte(scancode);
}
}