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#pragma once
#include <AK/AKString.h>
#include <AK/Types.h>
#include <Kernel/Devices/BlockDevice.h>
#include <Kernel/PhysicalAddress.h>
#include <SharedGraphics/Size.h>
class BXVGADevice final : public BlockDevice {
AK_MAKE_ETERNAL
public:
static BXVGADevice& the();
BXVGADevice();
PhysicalAddress framebuffer_address() const { return m_framebuffer_address; }
void set_resolution(int width, int height);
void set_y_offset(int);
virtual int ioctl(FileDescriptor&, unsigned request, unsigned arg) override;
virtual KResultOr<Region*> mmap(Process&, LinearAddress preferred_laddr, size_t offset, size_t) override;
size_t framebuffer_size_in_bytes() const { return m_framebuffer_size.area() * sizeof(dword) * 2; }
Size framebuffer_size() const { return m_framebuffer_size; }
private:
virtual const char* class_name() const override { return "BXVGA"; }
virtual bool can_read(FileDescriptor&) const override;
virtual bool can_write(FileDescriptor&) const override;
virtual ssize_t read(FileDescriptor&, byte*, ssize_t) override;
virtual ssize_t write(FileDescriptor&, const byte*, ssize_t) override;
void set_register(word index, word value);
dword find_framebuffer_address();
PhysicalAddress m_framebuffer_address;
Size m_framebuffer_size;
};
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