Litrally amlmost functional PS/2 driver. #19

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peony wants to merge 29 commits from peony/ableos:master into master
5 changed files with 139 additions and 5 deletions
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6
Cargo.lock generated
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@ -228,12 +228,12 @@ dependencies = [
[[package]]
name = "hbbytecode"
version = "0.1.0"
source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#654005eea293b1a2e7d81a08d5d4cb542d4cc8a2"
source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#c61efc393361089f5217db9f4a9011ed0248b8db"
[[package]]
name = "hblang"
version = "0.1.0"
source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#654005eea293b1a2e7d81a08d5d4cb542d4cc8a2"
source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#c61efc393361089f5217db9f4a9011ed0248b8db"
dependencies = [
"hashbrown 0.15.1",
"hbbytecode",
@ -245,7 +245,7 @@ dependencies = [
[[package]]
name = "hbvm"
version = "0.1.0"
source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#654005eea293b1a2e7d81a08d5d4cb542d4cc8a2"
source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#c61efc393361089f5217db9f4a9011ed0248b8db"
dependencies = [
"hbbytecode",
]

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@ -0,0 +1,12 @@
# Unified PS/2 Driver
Te entire thing is heavily documented with comments because I'm not sure how else to make this understandable.
## !!Assumptions!!
Anyone who works on this should work to keep this list as small as possible/remove as many of these as possible.
- Bit 5 of the response form 0x64 indicates which port the data is coming from. (Not true on all systems)
- A parity or timeout error never occurs.
- PS/2 controller exists.
- Both PS/2 ports being broken doesn't need handling.
- One PS/2 port being broken doesn't need special attention.
- PS/2 controller doesn't need to perform a self-check.

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@ -0,0 +1,11 @@
[package]
name = "ps2_driver"
authors = ["Peony"]
[dependants.libraries]
[dependants.binaries]
hblang.version = "1.0.0"
[build]
command = "hblang src/main.hb"

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@ -0,0 +1,108 @@
.{memory, log} := @use("../../../libraries/stn/src/lib.hb")
DeviceID := struct {value: u16}
$Mouse3Button := DeviceID.(0x0)
$MouseScrollwheel := DeviceID.(0x3)
$Mouse5Button := DeviceID.(0x4)
$Spacesaver := DeviceID.(0xAB84)
$Keyboard122Key := DeviceID.(0xAB86)
$KeyboardJapaneseG := DeviceID.(0xAB90)
$KeyboardJapanesep := DeviceID.(0xAB91)
$KeyboardJapaneseA := DeviceID.(0xAB92)
$KeyboardNCDSun := DeviceID.(0xACA1)
$NoDevice := DeviceID.(0xFFFF)
Port := struct {exists: bool, device: DeviceID, command_queued: bool, command_queue: u8}
$check_bit := fn(value: u8, bit: u8, state: u8): bool {
return value >> bit & 1 == state
}
ports := [Port].(.(true, NoDevice, false, 0xFF), .(true, NoDevice, false, 0xFF))
$initialize_controller := fn(): void {
memory.outb(0x64, 0xAD)
memory.outb(0x64, 0xA7)
//Disables ports to make sure that they won't interfere with the setup process.
loop if (memory.inb(0x64) & 1) == 0 break else memory.inb(0x60)
//Flushes any output because apperantly that might interfere with stuff.
memory.outb(0x64, 0xA8)
//Enables port 2.
memory.outb(0x64, 0x20)
//Gimme configuration byte.
loop if (memory.inb(0x64) & 1) == 1 break
ports[1].exists = check_bit(memory.inb(0x60), 5, 0)
if ports[1].exists {
memory.outb(0x64, 0xA7)
}
loop if (memory.inb(0x64) & 1) == 0 break else memory.inb(0x60)
//Flushes any output because apperantly that might interfere with stuff.
memory.outb(0x64, 0xAB)
loop if (memory.inb(0x64) & 1) == 1 break
ports[0].exists = memory.inb(0x60) == 0x0
//Test port 1.
if ports[1].exists {
memory.outb(0x64, 0xA9)
loop if (memory.inb(0x64) & 1) == 1 break
ports[1].exists = memory.inb(0x60) == 0x0
}
//Test port 2.
if (ports[0].exists | ports[1].exists) == false {
log.error("No ports detected! No input will be processed! Cannot handle this!\0")
}
if ports[0].exists {
memory.outb(0x64, 0xAE)
//Enables port 1.
ports[0].command_queued = true
}
if ports[1].exists {
memory.outb(0x64, 0xA8)
//Enables port 2.
ports[1].command_queued = true
}
}
handle_input := fn(port: uint, input: u8): void {
}
main := fn(): void {
loop {
port_info := memory.inb(0x64)
//Enables port 1.
if (port_info & 0x40) > 0 {
log.error("Timeout error! Cannot handle these!\0")
}
if (port_info & 0x80) > 0 {
log.error("Parity error! Cannot handle these!\0")
}
if (port_info & 1) == 0 {
if ports[0].exists & ports[0].command_queued {
memory.outb(0x60, ports[0].command_queue)
ports[0].command_queued = false
}
if ports[1].exists & ports[1].command_queued {
memory.outb(0x64, 0xD4)
memory.outb(0x60, ports[1].command_queue)
ports[1].command_queued = false
}
}
port := 0
if ports[1].exists {
port = port_info >> 5 & 1
}
if ports[port].exists {
@inline(handle_input, port, memory.inb(0x60))
}
}
}

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@ -22,8 +22,8 @@ resolution = "1024x768x24"
[boot.limine.ableos.modules]
[boot.limine.ableos.modules.render_example]
path = "boot:///render_example.hbf"
# [boot.limine.ableos.modules.render_example]
# path = "boot:///render_example.hbf"
# [boot.limine.ableos.modules.horizon]
# path = "boot:///horizon.hbf"
@ -33,3 +33,6 @@ path = "boot:///render_example.hbf"
# [boot.limine.ableos.modules.ps2_keyboard_driver]
# path = "boot:///ps2_keyboard_driver.hbf"
[boot.limine.ableos.modules.ps2_driver]
path = "boot:///ps2_driver.hbf"