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This call allows for checking if the given execution buffer has been completed and complements the completion signal. Initially the GPU multiplexer always sent such a signal when the currently scheduled execution buffer has been completed. During enablement of the 'iris' driver it became necessary to properly check of sequence number. In case of the Intel GPU multiplexer the sequence numbers are continous, which prompted the greater-than-or-equal check in the DRM back end. By hidding this implementation detail behind the interface, GPU drivers are free to deal with sequence numbers any way they like and allows for polling in the client, where the completion signal is now more of a progress signal. Issue #4265.
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
/*
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* \brief Client-side Gpu session interface
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* \author Josef Soentgen
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* \date 2017-04-28
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*/
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/*
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* Copyright (C) 2017-2021 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__GPU_SESSION__CLIENT_H_
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#define _INCLUDE__GPU_SESSION__CLIENT_H_
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/* Genode includes */
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#include <base/rpc_client.h>
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#include <gpu_session/capability.h>
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namespace Gpu { class Session_client; }
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class Gpu::Session_client : public Genode::Rpc_client<Session>
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{
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public:
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/**
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* Constructor
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*
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* \param session session capability
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*/
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Session_client(Session_capability session)
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: Genode::Rpc_client<Session>(session) { }
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/***********************
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** Session interface **
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***********************/
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Genode::Dataspace_capability info_dataspace() const override {
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return call<Rpc_info_dataspace>(); }
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Gpu::Sequence_number exec_buffer(Buffer_id id,
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Genode::size_t size) override {
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return call<Rpc_exec_buffer>(id, size); }
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bool complete(Sequence_number seqno) override {
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return call<Rpc_complete>(seqno); }
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void completion_sigh(Genode::Signal_context_capability sigh) override {
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call<Rpc_completion_sigh>(sigh); }
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Genode::Dataspace_capability alloc_buffer(Buffer_id id, Genode::size_t size) override {
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return call<Rpc_alloc_buffer>(id, size); }
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void free_buffer(Gpu::Buffer_id id) override {
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call<Rpc_free_buffer>(id); }
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Genode::Dataspace_capability map_buffer(Buffer_id id,
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bool aperture) override {
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return call<Rpc_map_buffer>(id, aperture); }
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void unmap_buffer(Buffer_id id) override {
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call<Rpc_unmap_buffer>(id); }
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bool map_buffer_ppgtt(Buffer_id id, Gpu::addr_t va) override {
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return call<Rpc_map_buffer_ppgtt>(id, va); }
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void unmap_buffer_ppgtt(Buffer_id id, Gpu::addr_t va) override {
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call<Rpc_unmap_buffer_ppgtt>(id, va); }
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bool set_tiling(Buffer_id id, unsigned mode) override {
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return call<Rpc_set_tiling>(id, mode); }
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};
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#endif /* _INCLUDE__GPU_SESSION__CLIENT_H_ */
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