mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-08 23:42:53 +03:00
aca317d889
PCI MMIO access is done by modifying the related PhysicalPage directly, then we request to remap the region to create the mapping.
78 lines
3.0 KiB
C++
78 lines
3.0 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/HashMap.h>
|
|
#include <AK/OwnPtr.h>
|
|
#include <AK/Types.h>
|
|
#include <Kernel/ACPI/Definitions.h>
|
|
#include <Kernel/PCI/Access.h>
|
|
#include <Kernel/VM/AnonymousVMObject.h>
|
|
#include <Kernel/VM/PhysicalRegion.h>
|
|
#include <Kernel/VM/Region.h>
|
|
#include <Kernel/VM/VMObject.h>
|
|
|
|
class PCI::MMIOAccess final : public PCI::Access {
|
|
public:
|
|
static void initialize(ACPI_RAW::MCFG&);
|
|
virtual void enumerate_all(Function<void(Address, ID)>&) override final;
|
|
|
|
virtual String get_access_type() override final { return "MMIO-Access"; };
|
|
virtual u32 get_segments_count();
|
|
protected:
|
|
explicit MMIOAccess(ACPI_RAW::MCFG&);
|
|
|
|
private:
|
|
virtual u8 read8_field(Address address, u32) override final;
|
|
virtual u16 read16_field(Address address, u32) override final;
|
|
virtual u32 read32_field(Address address, u32) override final;
|
|
virtual void write8_field(Address address, u32, u8) override final;
|
|
virtual void write16_field(Address address, u32, u16) override final;
|
|
virtual void write32_field(Address address, u32, u32) override final;
|
|
|
|
void map_device(Address address);
|
|
virtual u8 get_segment_start_bus(u32);
|
|
virtual u8 get_segment_end_bus(u32);
|
|
|
|
ACPI_RAW::MCFG& m_mcfg;
|
|
HashMap<u16, MMIOSegment*>& m_segments;
|
|
OwnPtr<Region> m_mmio_window_region;
|
|
PCI::ChangeableAddress m_mapped_address;
|
|
};
|
|
|
|
class PCI::MMIOSegment {
|
|
public:
|
|
MMIOSegment(PhysicalAddress, u8, u8);
|
|
u8 get_start_bus();
|
|
u8 get_end_bus();
|
|
size_t get_size();
|
|
PhysicalAddress get_paddr();
|
|
|
|
private:
|
|
PhysicalAddress m_base_addr;
|
|
u8 m_start_bus;
|
|
u8 m_end_bus;
|
|
}; |