136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
/*
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* \brief Core-specific instance of the VM session interface
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* \author Alexander Boettcher
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* \date 2018-08-26
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*/
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/*
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* Copyright (C) 2018 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 _CORE__VM_SESSION_COMPONENT_H_
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#define _CORE__VM_SESSION_COMPONENT_H_
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/* Genode includes */
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#include <base/allocator_guard.h>
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#include <base/rpc_server.h>
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#include <vm_session/vm_session.h>
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namespace Genode { class Vm_session_component; }
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class Genode::Vm_session_component
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:
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private Ram_quota_guard,
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private Cap_quota_guard,
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public Rpc_object<Vm_session, Vm_session_component>,
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public Region_map_detach
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{
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private:
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typedef Constrained_ram_allocator Con_ram_allocator;
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typedef Allocator_avl_tpl<Rm_region> Avl_region;
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class Vcpu : public List<Vcpu>::Element {
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public:
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enum State { INIT, ALIVE };
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private:
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Constrained_ram_allocator &_ram_alloc;
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Cap_quota_guard &_cap_alloc;
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Ram_dataspace_capability _ds_cap { };
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addr_t _sel_sm_ec_sc;
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addr_t _vm_pt_cnt { 0 };
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Vcpu_id const _id;
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State _state { INIT };
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public:
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Vcpu(Constrained_ram_allocator &ram_alloc,
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Cap_quota_guard &cap_alloc,
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Vcpu_id const id);
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~Vcpu();
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addr_t sm_sel() const { return _sel_sm_ec_sc + 0; }
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addr_t ec_sel() const { return _sel_sm_ec_sc + 1; }
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addr_t sc_sel() const { return _sel_sm_ec_sc + 2; }
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addr_t new_pt_id();
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bool match(Vcpu_id const id) const { return id.id == _id.id; }
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Ram_dataspace_capability ds_cap() const { return _ds_cap; }
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bool init() const { return _state == State::INIT; }
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void alive() { _state = ALIVE; };
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static addr_t invalid() { return ~0UL; }
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};
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Rpc_entrypoint &_ep;
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Con_ram_allocator _constrained_md_ram_alloc;
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Sliced_heap _sliced_heap;
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Slab _slab { max(sizeof(Vcpu), sizeof(Rm_region)),
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4096 - Sliced_heap::meta_data_size(),
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nullptr, &_sliced_heap };
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Avl_region _map { &_slab };
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addr_t _pd_sel { 0 };
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unsigned _id_alloc { 0 };
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unsigned _priority;
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List<Vcpu> _vcpus { };
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Vcpu * _lookup(Vcpu_id const vcpu_id)
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{
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for (Vcpu * vcpu = _vcpus.first(); vcpu; vcpu = vcpu->next())
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if (vcpu->match(vcpu_id)) return vcpu;
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return nullptr;
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}
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void _attach_vm_memory(Dataspace_component &, addr_t, bool, bool);
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void _detach_vm_memory(addr_t, size_t);
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protected:
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Ram_quota_guard &_ram_quota_guard() { return *this; }
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Cap_quota_guard &_cap_quota_guard() { return *this; }
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public:
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using Ram_quota_guard::upgrade;
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using Cap_quota_guard::upgrade;
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Vm_session_component(Rpc_entrypoint &, Resources, Label const &,
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Diag, Ram_allocator &ram, Region_map &, unsigned);
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~Vm_session_component();
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/*********************************
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** Region_map_detach interface **
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*********************************/
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void detach(Region_map::Local_addr) override;
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void unmap_region(addr_t, size_t) override;
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/**************************
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** Vm session interface **
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**************************/
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Dataspace_capability _cpu_state(Vcpu_id);
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void _exception_handler(Signal_context_capability, Vcpu_id);
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void _run(Vcpu_id);
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void _pause(Vcpu_id) { }
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void attach(Dataspace_capability, addr_t) override;
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void attach_pic(addr_t) override {}
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void detach(addr_t, size_t) override;
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void _create_vcpu(Thread_capability);
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};
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#endif /* _CORE__VM_SESSION_COMPONENT_H_ */
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