mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-28 13:43:45 +03:00
77 lines
3.3 KiB
C++
77 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/String.h>
|
|
#include <AK/Types.h>
|
|
#include <Kernel/Devices/BlockDevice.h>
|
|
#include <Kernel/PhysicalAddress.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class BXVGADevice final : public BlockDevice {
|
|
AK_MAKE_ETERNAL
|
|
public:
|
|
static void initialize();
|
|
static BXVGADevice& the();
|
|
|
|
BXVGADevice();
|
|
|
|
virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg) override;
|
|
virtual KResultOr<Region*> mmap(Process&, FileDescription&, VirtualAddress preferred_vaddr, size_t offset, size_t, int prot, bool shared) override;
|
|
|
|
private:
|
|
virtual const char* class_name() const override { return "BXVGA"; }
|
|
virtual bool can_read(const FileDescription&, size_t) const override { return true; }
|
|
virtual bool can_write(const FileDescription&, size_t) const override { return true; }
|
|
virtual KResultOr<size_t> read(FileDescription&, size_t, u8*, size_t) override { return -EINVAL; }
|
|
virtual KResultOr<size_t> write(FileDescription&, size_t, const u8*, size_t) override { return -EINVAL; }
|
|
virtual bool read_blocks(unsigned, u16, u8*) override { return false; }
|
|
virtual bool write_blocks(unsigned, u16, const u8*) override { return false; }
|
|
|
|
void set_safe_resolution();
|
|
|
|
void set_register(u16 index, u16 value);
|
|
u16 get_register(u16 index);
|
|
bool validate_setup_resolution(size_t width, size_t height);
|
|
u32 find_framebuffer_address();
|
|
void revert_resolution();
|
|
bool test_resolution(size_t width, size_t height);
|
|
size_t framebuffer_size_in_bytes() const { return m_framebuffer_pitch * m_framebuffer_height * 2; }
|
|
bool set_resolution(size_t width, size_t height);
|
|
void set_resolution_registers(size_t width, size_t height);
|
|
void set_y_offset(size_t);
|
|
|
|
PhysicalAddress m_framebuffer_address;
|
|
size_t m_framebuffer_pitch { 0 };
|
|
size_t m_framebuffer_width { 0 };
|
|
size_t m_framebuffer_height { 0 };
|
|
size_t m_y_offset { 0 };
|
|
};
|
|
|
|
}
|