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60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
#pragma once
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#include <util/types.hpp>
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#include "util/address_range.h"
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#include "glutils/buffer_object.h"
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// TODO: Unify the DMA implementation across backends as part of RSX restructuring.
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namespace gl
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{
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using dma_mapping_handle = std::pair<u32, gl::buffer*>;
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dma_mapping_handle map_dma(u32 guest_addr, u32 length);
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void clear_dma_resources();
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// GL does not currently support mixed block types...
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class dma_block
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{
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public:
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dma_block() = default;
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void allocate(u32 base_address, u32 block_size);
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void resize(u32 new_length);
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void* map(const utils::address_range& range) const;
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void set_parent(const dma_block* other);
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const dma_block* head() const
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{
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return m_parent ? m_parent : this;
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}
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bool can_map(const utils::address_range& range) const;
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u32 base_addr() const
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{
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return m_base_address;
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}
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u32 length() const
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{
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return m_data ? static_cast<u32>(m_data->size()) : 0;
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}
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bool empty() const
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{
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return length() == 0;
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}
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buffer* get() const
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{
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return m_data.get();
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}
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utils::address_range range() const
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{
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return utils::address_range::start_length(m_base_address, length());
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}
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protected:
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u32 m_base_address = 0;
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const dma_block* m_parent = nullptr;
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std::unique_ptr<gl::buffer> m_data;
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};
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} // namespace gl
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