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Serenity Operating System
1/*
2 * Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28#include <Kernel/PCI/Access.h>
29
30namespace Kernel {
31namespace PCI {
32
33class IOAccess final : public PCI::Access {
34public:
35 static void initialize();
36
37protected:
38 IOAccess();
39
40private:
41 virtual void enumerate_all(Function<void(Address, ID)>&) override;
42 virtual const char* access_type() const override { return "IO-Access"; };
43 virtual uint32_t segment_count() const override { return 1; };
44 virtual void write8_field(Address address, u32, u8) override final;
45 virtual void write16_field(Address address, u32, u16) override final;
46 virtual void write32_field(Address address, u32, u32) override final;
47 virtual u8 read8_field(Address address, u32) override;
48 virtual u16 read16_field(Address address, u32) override;
49 virtual u32 read32_field(Address address, u32) override;
50
51 virtual uint8_t segment_start_bus(u32) const override { return 0x0; }
52 virtual uint8_t segment_end_bus(u32) const override { return 0xFF; }
53};
54
55}
56}