mirror of
https://github.com/RGBCube/serenity
synced 2025-05-28 11:45:11 +00:00
66c1a9be3b
Nothing crazy, this just means that PROT_READ allocates readable regions, and that PROT_WRITE allocates writable ones.
38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
#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, int prot) 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;
|
|
};
|