forked from AbleOS/ableos
144 lines
4 KiB
Plaintext
144 lines
4 KiB
Plaintext
.{memory, log, string} := @use("../../../libraries/stn/src/lib.hb")
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format_page := memory.dangling(u8)
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DeviceID := struct {value: u16}
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$Mouse3Button := DeviceID.(0x0)
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$MouseScrollwheel := DeviceID.(0x3)
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$Mouse5Button := DeviceID.(0x4)
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$Spacesaver := DeviceID.(0x84AB)
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$Keyboard122Key := DeviceID.(0x86AB)
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$KeyboardJapaneseG := DeviceID.(0x90AB)
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$KeyboardJapanesep := DeviceID.(0x91AB)
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$KeyboardJapaneseA := DeviceID.(0x92AB)
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$KeyboardNCDSun := DeviceID.(0xA1AC)
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$NoDevice := DeviceID.(0xFFFF)
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State := struct {value: u8}
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$Recive := State.(0)
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$Reboot := State.(1)
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$GetID := State.(2)
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$TurnOnStreaming := State.(3)
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CommandQueue := struct {queue: [u8; 8]}
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Port := struct {exists: bool, device: DeviceID, commands_queued: u8, command_queue: [u8; 8], command_index: u8, awaiting_acks: u8, state: State, expecting: bool}
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$check_bit := fn(value: u8, bit: u8, state: u8): bool {
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return (value >> bit & 1) == state
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}
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ports := [Port].(.(true, NoDevice, 1, .(0xFF, 0, 0, 0, 0, 0, 0, 0), 0, 0, Reboot, false), .(true, NoDevice, 1, .(0xFF, 0, 0, 0, 0, 0, 0, 0), 0, 0, Reboot, false))
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$send_byte := fn(port: uint, value: u8): void {
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//Sending over 8 bytes will cause and overflow, don't do pwease?
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ports[port].command_queue[(ports[port].command_index + 1) % 8] = value
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ports[port].awaiting_acks += 1
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}
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initialize_controller := fn(): void {
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memory.outb(0x64, 0xAD)
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memory.outb(0x64, 0xA7)
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//Disables ports to make sure that they won't interfere with the setup process.
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loop if (memory.inb(0x64) & 1) == 0 break else memory.inb(0x60)
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//Flushes any output because apperantly that might interfere with stuff.
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memory.outb(0x64, 0xA8)
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//Enables port 2.
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memory.outb(0x64, 0x20)
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//Gimme configuration byte.
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loop if (memory.inb(0x64) & 1) == 1 break
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ports[1].exists = check_bit(memory.inb(0x60), 5, 0)
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if ports[1].exists {
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memory.outb(0x64, 0xA7)
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}
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loop if (memory.inb(0x64) & 1) == 0 break else memory.inb(0x60)
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//Flushes any output because apperantly that might interfere with stuff.
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memory.outb(0x64, 0xAB)
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loop if (memory.inb(0x64) & 1) == 1 break
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ports[0].exists = memory.inb(0x60) == 0x0
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//Test port 1.
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if ports[1].exists {
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memory.outb(0x64, 0xA9)
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loop if (memory.inb(0x64) & 1) == 1 break
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ports[1].exists = memory.inb(0x60) == 0x0
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}
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//Test port 2.
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if (ports[0].exists | ports[1].exists) == false {
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log.error("No ports detected! No input will be processed! Cannot handle this!\0")
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}
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if ports[0].exists {
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log.info("Port 1 exists.\0")
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memory.outb(0x64, 0xAE)
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//Enables port 1.
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ports[0].commands_queued = 1
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}
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if ports[1].exists {
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log.info("Port 2 exists.\0")
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memory.outb(0x64, 0xA8)
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//Enables port 2.
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ports[1].commands_queued = 1
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}
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}
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handle_input := fn(port: uint, input: u8): void {
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if input == 0xAA {
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log.info("Device rebooted!\0")
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log.info(string.display_int(@intcast(port + 1), format_page, 16))
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ports[port].state = GetID
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send_byte(port, 0xF2)
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//Get ID
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} else if ports[port].state.value == Recive.value {
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}
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}
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main := fn(): void {
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format_page = memory.alloc(u8, 1024)
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@inline(initialize_controller)
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loop {
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port_info := memory.inb(0x64)
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//Enables port 1.
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if (port_info & 0x40) > 0 {
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log.error("Timeout error! Cannot handle these!\0")
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}
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if (port_info & 0x80) > 0 {
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log.error("Parity error! Cannot handle these!\0")
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}
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if (port_info & 1) == 0 {
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if ports[0].exists & ports[0].commands_queued > 0 {
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memory.outb(0x60, ports[0].command_queue[ports[0].command_index])
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ports[0].commands_queued -= 1
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ports[0].command_index = (ports[0].command_index + 1) % 8
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}
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if ports[1].exists & ports[1].commands_queued > 0 {
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memory.outb(0x64, 0xD4)
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memory.outb(0x60, ports[1].command_queue[ports[1].command_index])
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ports[1].commands_queued -= 1
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ports[1].command_index = (ports[1].command_index + 1) % 8
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}
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}
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port := 0
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if ports[1].exists {
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port = port_info >> 5 & 1
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}
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if ports[port].exists {
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input := memory.inb(0x60)
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if ports[port].awaiting_acks > 0 & input == 0xFA {
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ports[port].awaiting_acks -= 1
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} else {
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@inline(handle_input, port, input)
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}
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}
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}
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} |