151 lines
3.5 KiB
C++
151 lines
3.5 KiB
C++
/*
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* \brief Platform driver for x86
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* \author Norman Feske
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* \date 2008-01-28
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*/
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/*
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* Copyright (C) 2008-2013 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 General Public License version 2.
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*/
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#include <base/env.h>
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#include <base/printf.h>
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#include <base/sleep.h>
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#include <cap_session/connection.h>
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#include <os/slave.h>
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#include <os/attached_rom_dataspace.h>
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#include "pci_session_component.h"
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#include "pci_device_config.h"
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using namespace Genode;
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using namespace Platform;
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class Device_pd_policy : public Genode::Slave_policy
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{
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private:
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Genode::Root_capability _cap;
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Genode::Lock _lock;
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protected:
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char const **_permitted_services() const
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{
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static char const *permitted_services[] = { "LOG", "CAP", "RM",
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"CPU", 0 };
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return permitted_services;
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};
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public:
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Device_pd_policy(Genode::Rpc_entrypoint &slave_ep)
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:
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Slave_policy("device_pd", slave_ep),
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_lock(Genode::Lock::LOCKED)
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{ }
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bool announce_service(const char *service_name,
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Genode::Root_capability root,
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Genode::Allocator *alloc,
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Genode::Server *server)
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{
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/* wait for 'platform_drv' to announce the DEVICE_PD service */
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if (Genode::strcmp(service_name, "DEVICE_PD"))
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return false;
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_cap = root;
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_lock.unlock();
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return true;
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}
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Genode::Root_capability root() {
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if (!_cap.valid())
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_lock.lock();
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return _cap;
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}
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};
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int main(int argc, char **argv)
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{
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printf("platform driver started\n");
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/*
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* Initialize server entry point
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*/
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enum {
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STACK_SIZE = 2 * sizeof(addr_t)*1024,
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DEVICE_PD_RAM_QUOTA = 256 * 4096,
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};
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static Cap_connection cap;
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static Rpc_entrypoint ep(&cap, STACK_SIZE, "platform_ep");
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/* use 'device_pd' as slave service */
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Session_capability session_dev_pd;
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Genode::Root_capability device_pd_root;
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try {
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static Rpc_entrypoint device_pd_ep(&cap, STACK_SIZE, "device_pd_slave");
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static Device_pd_policy device_pd_policy(device_pd_ep);
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static Genode::Slave device_pd_slave(device_pd_ep, device_pd_policy,
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DEVICE_PD_RAM_QUOTA);
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device_pd_root = device_pd_policy.root();
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} catch (...) {
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PWRN("PCI device protection domain for IOMMU support is not available");
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}
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/*
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* Use sliced heap to allocate each session component at a separate
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* dataspace.
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*/
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static Sliced_heap sliced_heap(env()->ram_session(), env()->rm_session());
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/**
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* If we are running with ACPI support, wait for the first report_rom
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*/
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bool wait_for_acpi = true;
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char * report_addr = nullptr;
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try {
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char yesno[4];
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Genode::config()->xml_node().attribute("acpi").value(yesno, sizeof(yesno));
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wait_for_acpi = strcmp(yesno, "no");
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} catch (...) { }
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if (wait_for_acpi) {
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static Attached_rom_dataspace acpi_rom("acpi");
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Signal_receiver sig_rec;
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Signal_context sig_ctx;
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Signal_context_capability sig_cap = sig_rec.manage(&sig_ctx);
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acpi_rom.sigh(sig_cap);
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while (!acpi_rom.is_valid()) {
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sig_rec.wait_for_signal();
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acpi_rom.update();
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}
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report_addr = acpi_rom.local_addr<char>();
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sig_rec.dissolve(&sig_ctx);
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}
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/*
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* Let the entry point serve the PCI root interface
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*/
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static Platform::Root root(&ep, &sliced_heap, DEVICE_PD_RAM_QUOTA,
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device_pd_root, report_addr);
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env()->parent()->announce(ep.manage(&root));
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Genode::sleep_forever();
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return 0;
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}
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