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Per Affinity::Location a system control cap can be requested. The capability provides an RPC interface to request and set Cpu_state, as provided by the former Pd::managing_system(Cpu_state) method. Invocation of those system control capabilities then *can* (see below) be executed on the desired CPU as described by Affinity::Location. The system control cap will be invalid for kernels that don't support system_control/managing_system functionality at all. The system control cap will be ever by the same, e.g. ignoring the Affinity::Location parameter, if the used kernel doesn't support or doesn't require the feature to execute the system control per CPU. The commit is a preparation step to add guarded and selective x86 MSR access per CPU. Fixes #5009
106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/*
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* \brief Client-side pd session interface
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* \author Christian Helmuth
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* \date 2006-07-12
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*/
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/*
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* Copyright (C) 2006-2017 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__PD_SESSION__CLIENT_H_
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#define _INCLUDE__PD_SESSION__CLIENT_H_
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#include <pd_session/capability.h>
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#include <dataspace/client.h>
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namespace Genode { struct Pd_session_client; }
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struct Genode::Pd_session_client : Rpc_client<Pd_session>
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{
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explicit Pd_session_client(Pd_session_capability session)
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: Rpc_client<Pd_session>(session) { }
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void assign_parent(Capability<Parent> parent) override {
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call<Rpc_assign_parent>(parent); }
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bool assign_pci(addr_t pci_config_memory_address, uint16_t bdf) override {
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return call<Rpc_assign_pci>(pci_config_memory_address, bdf); }
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void map(addr_t virt, addr_t size) override { call<Rpc_map>(virt, size); }
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Signal_source_capability alloc_signal_source() override {
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return call<Rpc_alloc_signal_source>(); }
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void free_signal_source(Signal_source_capability cap) override {
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call<Rpc_free_signal_source>(cap); }
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Signal_context_capability alloc_context(Signal_source_capability source,
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unsigned long imprint) override {
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return call<Rpc_alloc_context>(source, imprint); }
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void free_context(Signal_context_capability cap) override {
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call<Rpc_free_context>(cap); }
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void submit(Signal_context_capability receiver, unsigned cnt = 1) override {
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call<Rpc_submit>(receiver, cnt); }
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Native_capability alloc_rpc_cap(Native_capability ep) override {
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return call<Rpc_alloc_rpc_cap>(ep); }
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void free_rpc_cap(Native_capability cap) override {
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call<Rpc_free_rpc_cap>(cap); }
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Capability<Region_map> address_space() override {
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return call<Rpc_address_space>(); }
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Capability<Region_map> stack_area() override {
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return call<Rpc_stack_area>(); }
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Capability<Region_map> linker_area() override {
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return call<Rpc_linker_area>(); }
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void ref_account(Capability<Pd_session> pd) override {
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call<Rpc_ref_account>(pd); }
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void transfer_quota(Capability<Pd_session> pd, Cap_quota amount) override {
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call<Rpc_transfer_cap_quota>(pd, amount); }
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Cap_quota cap_quota() const override { return call<Rpc_cap_quota>(); }
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Cap_quota used_caps() const override { return call<Rpc_used_caps>(); }
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Alloc_result try_alloc(size_t size, Cache cache = CACHED) override
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{
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return call<Rpc_try_alloc>(size, cache);
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}
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void free(Ram_dataspace_capability ds) override { call<Rpc_free>(ds); }
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size_t dataspace_size(Ram_dataspace_capability ds) const override
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{
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return ds.valid() ? Dataspace_client(ds).size() : 0;
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}
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void transfer_quota(Pd_session_capability pd_session, Ram_quota amount) override {
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call<Rpc_transfer_ram_quota>(pd_session, amount); }
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Ram_quota ram_quota() const override { return call<Rpc_ram_quota>(); }
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Ram_quota used_ram() const override { return call<Rpc_used_ram>(); }
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Capability<Native_pd> native_pd() override { return call<Rpc_native_pd>(); }
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Capability<System_control> system_control_cap(Affinity::Location const location) override {
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return call<Rpc_system_control_cap>(location); }
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addr_t dma_addr(Ram_dataspace_capability ds) override { return call<Rpc_dma_addr>(ds); }
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Attach_dma_result attach_dma(Dataspace_capability ds, addr_t at) override {
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return call<Rpc_attach_dma>(ds, at); }
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};
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#endif /* _INCLUDE__PD_SESSION__CLIENT_H_ */
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