118 lines
2.8 KiB
C++
118 lines
2.8 KiB
C++
/*
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* \brief PCI-bus driver
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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 "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 Pci;
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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("pci_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 'pci_drv' to announce the PCI service */
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if (Genode::strcmp(service_name, "PCI_DEV_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("PCI 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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PCI_DEVICE_PD_RAM_QUOTA = sizeof(addr_t) * 128 * 1024,
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};
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static Cap_connection cap;
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static Rpc_entrypoint ep(&cap, STACK_SIZE, "pci_ep");
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/* use 'pci_device_pd' as slave service */
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Session_capability session_dev_pd;
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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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PCI_DEVICE_PD_RAM_QUOTA);
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session_dev_pd = Genode::Root_client(device_pd_policy.root()).session("");
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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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* Let the entry point serve the PCI root interface
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*/
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static Pci::Root root(&ep, &sliced_heap, PCI_DEVICE_PD_RAM_QUOTA,
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Genode::reinterpret_cap_cast<Device_pd>(session_dev_pd));
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env()->parent()->announce(ep.manage(&root));
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sleep_forever();
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return 0;
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}
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