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pl180: remove irrelevant usage of Irq_handler

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Although the driver makes no use of interrupts it references Irq_handler
for unknown reasons. Moreover, this commit eliminates the lock that is
not necessary anymore, because the driver now runs single-threaded.

Ref #2072
This commit is contained in:
Stefan Kalkowski 2016-08-24 12:47:23 +02:00 committed by Christian Helmuth
parent 35fe716bff
commit 5aee80ee32
1 changed files with 2 additions and 29 deletions
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31
repos/os/src/drivers/sd_card/spec/pl180/pl180.h
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@ -5,7 +5,7 @@
*/
/*
* Copyright (C) 2011-2013 Genode Labs GmbH
* Copyright (C) 2011-2016 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
@ -14,16 +14,13 @@
#ifndef _DRIVERS__SD_CARD__SPEC__PL180__PL180_H_
#define _DRIVERS__SD_CARD__SPEC__PL180__PL180_H_
#include <base/env.h>
#include <base/lock.h>
#include <base/log.h>
#include <os/irq_activation.h>
#include <os/attached_io_mem_dataspace.h>
#include <timer_session/connection.h>
#include "host_driver.h"
class Pl180 : public Host_driver, public Genode::Irq_handler
class Pl180 : public Host_driver
{
private:
@ -85,8 +82,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
Genode::Attached_io_mem_dataspace _io_mem;
Genode::uint32_t volatile *_base;
mutable Genode::Lock _mutex;
Genode::uint32_t _read_reg(Register reg) const
{
return _base[reg >> 2];
@ -131,16 +126,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
_clear_status();
}
/***************************
** IRQ handler interface **
***************************/
void handle_irq(int irq_number)
{
Genode::Lock::Guard g(_mutex);
_clear_status();
}
/***************************
** Host driver interface **
@ -149,8 +134,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
void request(unsigned char cmd,
unsigned *out_resp)
{
Genode::Lock::Guard g(_mutex);
_write_reg(Argument, 0);
_write_command(cmd, (out_resp != 0));
if (out_resp)
@ -162,8 +145,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
unsigned arg,
unsigned *out_resp)
{
Genode::Lock::Guard g(_mutex);
_write_reg(Argument, arg);
_write_command(cmd, (out_resp != 0));
if (out_resp)
@ -176,8 +157,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
unsigned length,
unsigned *out_resp)
{
Genode::Lock::Guard g(_mutex);
/*
* FIXME on real hardware the blocksize must be written into
* DataCtrl:BlockSize.
@ -199,8 +178,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
unsigned length,
unsigned *out_resp)
{
Genode::Lock::Guard g(_mutex);
/*
* FIXME on real hardware the blocksize must be written into
* DataCtrl:BlockSize.
@ -220,8 +197,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
void read_data(unsigned length,
char *out_buffer)
{
Genode::Lock::Guard g(_mutex);
unsigned *buf = reinterpret_cast<unsigned *>(out_buffer);
for (unsigned count = 0; count < length / 4; ) {
/*
@ -238,8 +213,6 @@ class Pl180 : public Host_driver, public Genode::Irq_handler
void write_data(unsigned length,
char const *buffer)
{
Genode::Lock::Guard g(_mutex);
enum { FIFO_SIZE = 16 };
unsigned const *buf = reinterpret_cast<unsigned const *>(buffer);