104 lines
2.5 KiB
C++
104 lines
2.5 KiB
C++
/*
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* \brief Core implementation of the IO_PORT session interface
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* \author Alexander Boettcher
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* \date 2016-07-17
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*/
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/*
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* Copyright (C) 2016-2017 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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/* Genode includes */
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#include <base/log.h>
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/* core includes */
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#include <io_port_session_component.h>
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#include <sel4/sel4.h>
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using namespace Genode;
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/**************
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** Port API **
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**************/
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unsigned char Io_port_session_component::inb(unsigned short address)
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{
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/* check boundaries */
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if (!_in_bounds(address, sizeof(unsigned char))) return 0;
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seL4_X86_IOPort_In8_t v = seL4_X86_IOPort_In8(seL4_CapIOPort, address);
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if (v.error == seL4_NoError)
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return v.result;
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Genode::error(__PRETTY_FUNCTION__, " failed ", v.error);
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return 0;
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}
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unsigned short Io_port_session_component::inw(unsigned short address)
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{
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/* check boundaries */
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if (!_in_bounds(address, sizeof(unsigned short))) return 0;
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seL4_X86_IOPort_In16_t v = seL4_X86_IOPort_In16(seL4_CapIOPort, address);
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if (v.error == seL4_NoError)
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return v.result;
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Genode::error(__PRETTY_FUNCTION__, " failed ", v.error);
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return 0;
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}
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unsigned Io_port_session_component::inl(unsigned short address)
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{
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/* check boundaries */
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if (!_in_bounds(address, sizeof(unsigned))) return 0;
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seL4_X86_IOPort_In32_t v = seL4_X86_IOPort_In32(seL4_CapIOPort, address);
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if (v.error == seL4_NoError)
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return v.result;
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Genode::error(__PRETTY_FUNCTION__, " failed ", v.error);
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return 0;
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}
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void Io_port_session_component::outb(unsigned short address, unsigned char value)
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{
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/* check boundaries */
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if (!_in_bounds(address, sizeof(unsigned char))) return;
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int error = seL4_X86_IOPort_Out8(seL4_CapIOPort, address, value);
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if (error != seL4_NoError)
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Genode::error(__PRETTY_FUNCTION__, " failed ", error);
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}
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void Io_port_session_component::outw(unsigned short address, unsigned short value)
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{
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/* check boundaries */
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if (!_in_bounds(address, sizeof(unsigned short))) return;
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int error = seL4_X86_IOPort_Out16(seL4_CapIOPort, address, value);
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if (error != seL4_NoError)
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Genode::error(__PRETTY_FUNCTION__, " failed ", error);
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}
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void Io_port_session_component::outl(unsigned short address, unsigned value)
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{
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/* check boundaries */
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if (!_in_bounds(address, sizeof(unsigned))) return;
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int error = seL4_X86_IOPort_Out32(seL4_CapIOPort, address, value);
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if (error != seL4_NoError)
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Genode::error(__PRETTY_FUNCTION__, " failed ", error);
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}
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