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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/String.h>
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#include <AK/Types.h>
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#include <Kernel/Devices/BlockDevice.h>
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#include <Kernel/PhysicalAddress.h>
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namespace Kernel {
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class BXVGADevice final : public BlockDevice {
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AK_MAKE_ETERNAL
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public:
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static void initialize();
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static BXVGADevice& the();
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BXVGADevice();
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virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg) override;
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virtual KResultOr<Region*> mmap(Process&, FileDescription&, const Range&, u64 offset, int prot, bool shared) override;
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// ^Device
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virtual mode_t required_mode() const override { return 0660; }
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virtual String device_name() const override;
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private:
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virtual const char* class_name() const override { return "BXVGA"; }
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virtual bool can_read(const FileDescription&, size_t) const override { return true; }
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virtual bool can_write(const FileDescription&, size_t) const override { return true; }
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virtual void start_request(AsyncBlockDeviceRequest& request) override { request.complete(AsyncDeviceRequest::Failure); }
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virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return -EINVAL; }
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virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return -EINVAL; }
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void set_safe_resolution();
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void set_register(u16 index, u16 value);
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u16 get_register(u16 index);
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bool validate_setup_resolution(size_t width, size_t height);
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u32 find_framebuffer_address();
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void revert_resolution();
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bool test_resolution(size_t width, size_t height);
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size_t framebuffer_size_in_bytes() const { return m_framebuffer_pitch * m_framebuffer_height * 2; }
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bool set_resolution(size_t width, size_t height);
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void set_resolution_registers(size_t width, size_t height);
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void set_y_offset(size_t);
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PhysicalAddress m_framebuffer_address;
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size_t m_framebuffer_pitch { 0 };
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size_t m_framebuffer_width { 0 };
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size_t m_framebuffer_height { 0 };
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size_t m_y_offset { 0 };
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};
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}
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