137 lines
2.9 KiB
C++
137 lines
2.9 KiB
C++
/*
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* \brief NIC driver based on iPXE
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* \author Christian Helmuth
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* \date 2011-11-17
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*/
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/*
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* Copyright (C) 2011-2012 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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/* Genode */
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#include <base/env.h>
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#include <base/sleep.h>
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#include <base/printf.h>
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#include <cap_session/connection.h>
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#include <nic/component.h>
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/* DDE */
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extern "C" {
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#include <dde_ipxe/nic.h>
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}
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namespace Ipxe {
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class Driver : public Nic::Driver
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{
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public:
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static Driver *instance;
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static void dde_rx_handler(unsigned if_index,
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const char *packet,
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unsigned packet_len)
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{
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instance->rx_handler(packet, packet_len);
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}
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private:
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Nic::Mac_address _mac_addr;
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Nic::Rx_buffer_alloc &_alloc;
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public:
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Driver(Nic::Rx_buffer_alloc &alloc)
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: _alloc(alloc)
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{
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PINF("--- init iPXE NIC");
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int cnt = dde_ipxe_nic_init();
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PINF(" number of devices: %d", cnt);
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PINF("--- init rx_callbacks");
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dde_ipxe_nic_register_rx_callback(dde_rx_handler);
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PINF("--- get MAC address");
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dde_ipxe_nic_get_mac_addr(1, _mac_addr.addr);
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PINF(" %02x:%02x:%02x:%02x:%02x:%02x",
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_mac_addr.addr[0], _mac_addr.addr[1], _mac_addr.addr[2],
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_mac_addr.addr[3], _mac_addr.addr[4], _mac_addr.addr[5]);
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}
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void rx_handler(const char *packet, unsigned packet_len)
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{
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void *buffer = _alloc.alloc(packet_len);
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Genode::memcpy(buffer, packet, packet_len);
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_alloc.submit();
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}
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/***************************
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** Nic::Driver interface **
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***************************/
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Nic::Mac_address mac_address() { return _mac_addr; }
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void tx(char const *packet, Genode::size_t size)
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{
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if (dde_ipxe_nic_tx(1, packet, size))
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PWRN("Sending packet failed!");
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}
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/******************************
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** Irq_activation interface **
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******************************/
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void handle_irq(int) { /* not used */ }
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};
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class Driver_factory : public Nic::Driver_factory
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{
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Nic::Driver *create(Nic::Rx_buffer_alloc &alloc)
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{
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Driver::instance = new (Genode::env()->heap()) Ipxe::Driver(alloc);
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return Driver::instance;
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}
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void destroy(Nic::Driver *)
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{
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Genode::destroy(Genode::env()->heap(), Driver::instance);
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Driver::instance = 0;
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}
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};
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} /* namespace Ipxe */
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Ipxe::Driver * Ipxe::Driver::instance = 0;
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int main(int, char **)
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{
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using namespace Genode;
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printf("--- iPXE NIC driver started ---\n");
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/**
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* Factory used by 'Nic::Root' at session creation/destruction time
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*/
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static Ipxe::Driver_factory driver_factory;
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enum { STACK_SIZE = 2*sizeof(addr_t)*1024 };
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static Cap_connection cap;
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static Rpc_entrypoint ep(&cap, STACK_SIZE, "nic_ep");
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static Nic::Root nic_root(&ep, env()->heap(), driver_factory);
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env()->parent()->announce(ep.manage(&nic_root));
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sleep_forever();
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return 0;
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}
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