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// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
#include <mutex>
#include "common/range_sets.h"
#include "common/range_sets.inc"
#include "core/hle/service/nvdrv/core/heap_mapper.h"
#include "video_core/host1x/host1x.h"
namespace Service::Nvidia::NvCore {
struct HeapMapper::HeapMapperInternal {
HeapMapperInternal(Tegra::Host1x::Host1x& host1x) : m_device_memory{host1x.MemoryManager()} {}
~HeapMapperInternal() = default;
Common::RangeSet<VAddr> m_temporary_set;
Common::SplitRangeSet<VAddr> m_mapped_ranges;
Tegra::MaxwellDeviceMemoryManager& m_device_memory;
std::mutex m_guard;
};
HeapMapper::HeapMapper(VAddr start_vaddress, DAddr start_daddress, size_t size, Core::Asid asid,
Tegra::Host1x::Host1x& host1x)
: m_vaddress{start_vaddress}, m_daddress{start_daddress}, m_size{size}, m_asid{asid} {
m_internal = std::make_unique<HeapMapperInternal>(host1x);
}
HeapMapper::~HeapMapper() {
// Unmap whatever has been mapped.
m_internal->m_mapped_ranges.ForEach([this](VAddr start_addr, VAddr end_addr, s32 count) {
const size_t sub_size = end_addr - start_addr;
const size_t offset = start_addr - m_vaddress;
m_internal->m_device_memory.Unmap(m_daddress + offset, sub_size);
});
}
DAddr HeapMapper::Map(VAddr start, size_t size) {
std::scoped_lock lk(m_internal->m_guard);
// Add the mapping range to a temporary range set.
m_internal->m_temporary_set.Clear();
m_internal->m_temporary_set.Add(start, size);
// Remove anything that's already mapped from the temporary range set.
m_internal->m_mapped_ranges.ForEachInRange(
start, size, [this](VAddr start_addr, VAddr end_addr, s32) {
m_internal->m_temporary_set.Subtract(start_addr, end_addr - start_addr);
});
// Map anything that has not been mapped yet.
m_internal->m_temporary_set.ForEach([this](VAddr start_addr, VAddr end_addr) {
const size_t sub_size = end_addr - start_addr;
const size_t offset = start_addr - m_vaddress;
m_internal->m_device_memory.Map(m_daddress + offset, m_vaddress + offset, sub_size, m_asid);
});
// Add the mapping range to the split map, to register the map and overlaps.
m_internal->m_mapped_ranges.Add(start, size);
m_internal->m_temporary_set.Clear();
return m_daddress + static_cast<DAddr>(start - m_vaddress);
}
void HeapMapper::Unmap(VAddr start, size_t size) {
std::scoped_lock lk(m_internal->m_guard);
// Just subtract the range and whatever is deleted, unmap it.
m_internal->m_mapped_ranges.Subtract(start, size, [this](VAddr start_addr, VAddr end_addr) {
const size_t sub_size = end_addr - start_addr;
const size_t offset = start_addr - m_vaddress;
m_internal->m_device_memory.Unmap(m_daddress + offset, sub_size);
});
}
} // namespace Service::Nvidia::NvCore
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