ableos/sysdata/programs/svga_driver/src/device.hb

pci := @use("../../../libraries/pci/src/lib.hb");
.{PCIAddress} := pci

FIFO := struct {
	reserved_size: u32,
	using_bounce_buffer: u8,
	bounce_buffer: [u8; 1024 * 1024],
	next_fence: u32,
}
new_fifo := fn(): FIFO {
	bounce_buffer := @as([u8; 1024 * 1024], idk)
	return FIFO.(0, 0, bounce_buffer, 0)
}

IRQ := struct {
	pending: u32,
	switchContext: u32,
	//IntrContext   oldContext;
	//IntrContext   newContext;
	count: u32,
}

new_irq := fn(): IRQ {
	return IRQ.(0, 0, 0)
}

SVGADevice := struct {
	pciAddr: PCIAddress,
	ioBase: u32,
	fifoMem: ^u32,
	fbMem: ^u8,
	fifoSize: int,
	fbSize: int,
	vramSize: int,
	deviceVersionId: int,
	capabilities: int,
	width: int,
	height: int,
	bpp: int,
	pitch: int,
	fifo: FIFO,
	irq: IRQ,
}

svga_device := fn(): SVGADevice {
	pci_addr := PCIAddress.(0, 0, 0)
	fifo := new_fifo()
	irq := new_irq()
	return SVGADevice.(pci_addr, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, fifo, irq)
}