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serenity/Kernel/PCI/Access.h
Andreas Kling e1709a0904 Kernel: Remove an unnecessary layer of indirection in the PCI code
The PCI access layer was composed of a bunch of virtual functions that
did nothing but call other virtual functions. The first layer was never
overridden so there was no need for them to be virtual.

This patch removes the indirection and moves logic from PCI::Access
down into the various PCI::get_foo() helpers that were the sole users.
2020-04-08 17:19:46 +02:00

61 lines
2.5 KiB
C++

/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* 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 <Kernel/PCI/Definitions.h>
namespace Kernel {
class PCI::Access {
public:
virtual void enumerate_all(Function<void(Address, ID)>&) = 0;
void enumerate_bus(int type, u8 bus, Function<void(Address, ID)>&);
void enumerate_functions(int type, u8 bus, u8 slot, u8 function, Function<void(Address, ID)>& callback);
void enumerate_slot(int type, u8 bus, u8 slot, Function<void(Address, ID)>& callback);
static Access& the();
static bool is_initialized();
virtual uint32_t get_segments_count() = 0;
virtual uint8_t get_segment_start_bus(u32 segment) = 0;
virtual uint8_t get_segment_end_bus(u32 segment) = 0;
virtual String get_access_type() = 0;
virtual void write8_field(Address address, u32 field, u8 value) = 0;
virtual void write16_field(Address address, u32 field, u16 value) = 0;
virtual void write32_field(Address address, u32 field, u32 value) = 0;
virtual u8 read8_field(Address address, u32 field) = 0;
virtual u16 read16_field(Address address, u32 field) = 0;
virtual u32 read32_field(Address address, u32 field) = 0;
protected:
Access();
};
}