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lan9118 nic_drv: transition to new base API
* get rid of the Irq_handler and Irq_activation usage Ref #1987 Ref #2072
This commit is contained in:
Stefan Kalkowski
Christian Helmuth
parent
5aee80ee32
commit
855e2c4b17
@ -1,11 +1,12 @@
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/*
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* \brief LAN9118 NIC driver
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* \author Norman Feske
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* \author Stefan Kalkowski
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* \date 2011-05-21
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*/
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/*
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* Copyright (C) 2011-2013 Genode Labs GmbH
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* Copyright (C) 2011-2016 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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@ -14,15 +15,14 @@
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#ifndef _DRIVERS__NIC__SPEC__LAN9118__LAN9118_H_
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#define _DRIVERS__NIC__SPEC__LAN9118__LAN9118_H_
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#include <base/attached_io_mem_dataspace.h>
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#include <base/log.h>
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#include <util/misc_math.h>
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#include <os/attached_io_mem_dataspace.h>
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#include <os/irq_activation.h>
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#include <irq_session/connection.h>
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#include <timer_session/connection.h>
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#include <nic/component.h>
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class Lan9118 : public Nic::Session_component,
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public Genode::Irq_handler
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class Lan9118 : public Nic::Session_component
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{
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private:
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@ -72,9 +72,8 @@ class Lan9118 : public Nic::Session_component,
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volatile Genode::uint32_t *_reg_base;
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Timer::Connection _timer;
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Nic::Mac_address _mac_addr;
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enum { IRQ_STACK_SIZE = 4096 };
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Genode::Irq_activation _irq_activation;
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Genode::Irq_connection _irq;
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Genode::Signal_handler<Lan9118> _irq_handler;
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/**
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* Information about a received packet, used internally
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@ -249,6 +248,43 @@ class Lan9118 : public Nic::Session_component,
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while (_send()) ;
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}
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void _handle_irq()
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{
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using namespace Genode;
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_handle_packet_stream();
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while (_rx_packet_avail() && _rx.source()->ready_to_submit()) {
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/* read packet from NIC, copy to client buffer */
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Rx_packet_info packet = _rx_packet_info();
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/* align size to 32-bit boundary */
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size_t const size = align_addr(packet.size, 2);
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/* allocate rx packet buffer */
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Nic::Packet_descriptor p;
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try {
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p = _rx.source()->alloc_packet(size);
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} catch (Session::Rx::Source::Packet_alloc_failed) { return; }
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uint32_t *dst = (uint32_t *)_rx.source()->packet_content(p);
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/* calculate number of words to be read from rx fifo */
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size_t count = min(size, _rx_data_pending()) >> 2;
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/* copy payload from rx fifo to client buffer */
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for (; count--; )
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*dst++ = _reg_read(RX_DATA_FIFO);
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_rx.source()->submit_packet(p);
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}
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/* acknowledge all pending irqs */
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_reg_write(INT_STS, ~0);
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_irq.ack_irq();
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}
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public:
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@ -266,13 +302,17 @@ class Lan9118 : public Nic::Session_component,
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Genode::size_t const tx_buf_size,
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Genode::size_t const rx_buf_size,
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Genode::Allocator &rx_block_md_alloc,
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Genode::Ram_session &ram_session,
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Server::Entrypoint &ep)
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: Session_component(tx_buf_size, rx_buf_size, rx_block_md_alloc, ram_session, ep),
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_mmio(mmio_base, mmio_size),
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_reg_base(_mmio.local_addr<Genode::uint32_t>()),
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_irq_activation(irq, *this, IRQ_STACK_SIZE)
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Genode::Env &env)
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: Session_component(tx_buf_size, rx_buf_size, rx_block_md_alloc,
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env.ram(), env.ep()),
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_mmio(env, mmio_base, mmio_size),
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_reg_base(_mmio.local_addr<Genode::uint32_t>()),
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_irq(env, irq),
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_irq_handler(env.ep(), *this, &Lan9118::_handle_irq)
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{
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_irq.sigh(_irq_handler);
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_irq.ack_irq();
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unsigned long const id_rev = _reg_read(ID_REV),
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byte_order = _reg_read(BYTE_TEST);
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@ -367,47 +407,6 @@ class Lan9118 : public Nic::Session_component,
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/* XXX always return true for now */
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return true;
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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)
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{
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using namespace Genode;
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_handle_packet_stream();
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while (_rx_packet_avail() && _rx.source()->ready_to_submit()) {
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/* read packet from NIC, copy to client buffer */
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Rx_packet_info packet = _rx_packet_info();
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/* align size to 32-bit boundary */
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size_t const size = align_addr(packet.size, 2);
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/* allocate rx packet buffer */
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Nic::Packet_descriptor p;
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try {
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p = _rx.source()->alloc_packet(size);
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} catch (Session::Rx::Source::Packet_alloc_failed) { return; }
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uint32_t *dst = (uint32_t *)_rx.source()->packet_content(p);
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/* calculate number of words to be read from rx fifo */
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size_t count = min(size, _rx_data_pending()) >> 2;
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/* copy payload from rx fifo to client buffer */
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for (; count--; )
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*dst++ = _reg_read(RX_DATA_FIFO);
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_rx.source()->submit_packet(p);
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}
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/* acknowledge all pending irqs */
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_reg_write(INT_STS, ~0);
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}
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};
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#endif /* _DRIVERS__NIC__SPEC__LAN9118__LAN9118_H_ */
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@ -1,6 +1,7 @@
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/*
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* \brief LAN9118 NIC driver
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* \author Norman Feske
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* \author Stefan Kalkowski
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* \date 2011-05-19
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*
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* Note, this driver is only tested on Qemu. At the current stage, it is not
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@ -8,17 +9,17 @@
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*/
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/*
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* Copyright (C) 2011-2013 Genode Labs GmbH
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* Copyright (C) 2011-2016 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 includes */
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#include <base/sleep.h>
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#include <cap_session/connection.h>
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#include <base/component.h>
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#include <base/env.h>
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#include <base/heap.h>
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#include <nic/component.h>
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#include <os/server.h>
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#include <root/component.h>
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/* device definitions */
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@ -27,13 +28,11 @@
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/* driver code */
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#include <lan9118.h>
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namespace Server { struct Main; }
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class Root : public Genode::Root_component<Lan9118, Genode::Single_client>
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{
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private:
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Server::Entrypoint &_ep;
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Genode::Env &_env;
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protected:
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@ -63,42 +62,26 @@ class Root : public Genode::Root_component<Lan9118, Genode::Single_client>
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return new (Root::md_alloc())
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Lan9118(LAN9118_PHYS, LAN9118_SIZE, LAN9118_IRQ,
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tx_buf_size, rx_buf_size,
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*env()->heap(),
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*env()->ram_session(),
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_ep);
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tx_buf_size, rx_buf_size, *md_alloc(), _env);
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}
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public:
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Root(Server::Entrypoint &ep, Genode::Allocator &md_alloc)
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: Genode::Root_component<Lan9118, Genode::Single_client>(&ep.rpc_ep(), &md_alloc),
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_ep(ep)
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{ }
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Root(Genode::Env &env, Genode::Allocator &md_alloc)
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: Genode::Root_component<Lan9118,
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Genode::Single_client>(env.ep(), md_alloc),
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_env(env) { }
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};
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struct Server::Main
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Genode::size_t Component::stack_size() { return 2*1024*sizeof(long); }
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void Component::construct(Genode::Env &env)
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{
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Entrypoint &ep;
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::Root nic_root{ ep, *Genode::env()->heap() };
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Main(Entrypoint &ep) : ep(ep)
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{
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log("--- LAN9118 NIC driver started ---");
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Genode::env()->parent()->announce(ep.manage(nic_root));
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}
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};
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namespace Server {
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char const *name() { return "nic_ep"; }
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size_t stack_size() { return 2*1024*sizeof(long); }
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void construct(Entrypoint &ep)
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{
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static Main main(ep);
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}
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static Genode::Heap heap(env.ram(), env.rm());
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static Root nic_root(env, heap);
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Genode::log("--- LAN9118 NIC driver started ---");
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env.parent().announce(env.ep().manage(nic_root));
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}
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@ -1,5 +1,5 @@
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REQUIRES = lan9118
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TARGET = nic_drv
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SRC_CC = main.cc
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LIBS = base server
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LIBS = base
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INC_DIR += $(PRG_DIR)
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