mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2014, 2015.
|
|
|
|
This file is part of Sortix.
|
|
|
|
Sortix is free software: you can redistribute it and/or modify it under the
|
|
terms of the GNU General Public License as published by the Free Software
|
|
Foundation, either version 3 of the License, or (at your option) any later
|
|
version.
|
|
|
|
Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
x86-family/ioport.cpp
|
|
IO ports.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <errno.h>
|
|
#include <timespec.h>
|
|
|
|
#include <sortix/clock.h>
|
|
|
|
#include <sortix/kernel/clock.h>
|
|
#include <sortix/kernel/ioport.h>
|
|
#include <sortix/kernel/time.h>
|
|
|
|
namespace Sortix {
|
|
|
|
bool wait_inport8_clear(uint16_t ioport, uint8_t bits, bool any, unsigned int msecs)
|
|
{
|
|
struct timespec timeout = timespec_make(msecs / 1000, (msecs % 1000) * 1000000L);
|
|
Clock* clock = Time::GetClock(CLOCK_BOOT);
|
|
struct timespec begun;
|
|
clock->Get(&begun, NULL);
|
|
while ( true )
|
|
{
|
|
struct timespec now;
|
|
clock->Get(&now, NULL);
|
|
uint8_t reg_snapshop = inport8(ioport);
|
|
if ( !any && (reg_snapshop & bits) == 0 )
|
|
return true;
|
|
if ( any && (reg_snapshop & bits) != bits )
|
|
return true;
|
|
struct timespec elapsed = timespec_sub(now, begun);
|
|
if ( timespec_le(timeout, elapsed) )
|
|
return errno = ETIMEDOUT, false;
|
|
kthread_yield();
|
|
}
|
|
}
|
|
|
|
bool wait_inport8_set(uint16_t ioport, uint8_t bits, bool any, unsigned int msecs)
|
|
{
|
|
struct timespec timeout = timespec_make(msecs / 1000, (msecs % 1000) * 1000000L);
|
|
Clock* clock = Time::GetClock(CLOCK_BOOT);
|
|
struct timespec begun;
|
|
clock->Get(&begun, NULL);
|
|
while ( true )
|
|
{
|
|
struct timespec now;
|
|
clock->Get(&now, NULL);
|
|
uint8_t reg_snapshop = inport8(ioport);
|
|
if ( !any && (reg_snapshop & bits) == bits )
|
|
return true;
|
|
if ( any && (reg_snapshop & bits) != 0 )
|
|
return true;
|
|
struct timespec elapsed = timespec_sub(now, begun);
|
|
if ( timespec_le(timeout, elapsed) )
|
|
return errno = ETIMEDOUT, false;
|
|
kthread_yield();
|
|
}
|
|
}
|
|
|
|
} // namespace Sortix
|