mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-11 13:02:03 +00:00
91 lines
3 KiB
C++
91 lines
3 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms and conditions of the GNU General Public License,
|
||
|
|
* version 2, as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
#if defined(ATMOSPHERE_IS_STRATOSPHERE)
|
||
|
|
#include <stratosphere.hpp>
|
||
|
|
#elif defined(ATMOSPHERE_IS_MESOSPHERE)
|
||
|
|
#include <mesosphere.hpp>
|
||
|
|
#elif defined(ATMOSPHERE_IS_EXOSPHERE)
|
||
|
|
#include <exosphere.hpp>
|
||
|
|
#else
|
||
|
|
#include <vapours.hpp>
|
||
|
|
#endif
|
||
|
|
#include "sdmmc_timer.hpp"
|
||
|
|
|
||
|
|
namespace ams::sdmmc::impl {
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
#if defined(AMS_SDMMC_USE_OS_TIMER)
|
||
|
|
void SpinWaitMicroSeconds(u32 us) {
|
||
|
|
const os::Tick timeout_tick = os::GetSystemTick() + os::ConvertToTick(TimeSpan::FromMicroSeconds(us)) + os::Tick(1);
|
||
|
|
while (true) {
|
||
|
|
if (os::GetSystemTick() > timeout_tick) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ALWAYS_INLINE void DataSynchronizationBarrier() {
|
||
|
|
#if defined(ATMOSPHERE_ARCH_ARM64)
|
||
|
|
__asm__ __volatile__("dsb sy" ::: "memory");
|
||
|
|
#elif defined(ATMOSPHERE_ARCH_ARM)
|
||
|
|
__asm__ __volatile__("dsb" ::: "memory");
|
||
|
|
#else
|
||
|
|
#error "Unknown architecture for DataSynchronizationBarrier"
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
ALWAYS_INLINE void InstructionSynchronizationBarrier() {
|
||
|
|
#if defined(ATMOSPHERE_ARCH_ARM64) || defined(ATMOSPHERE_ARCH_ARM)
|
||
|
|
__asm__ __volatile__("isb" ::: "memory");
|
||
|
|
#else
|
||
|
|
#error "Unknown architecture for InstructionSynchronizationBarrier"
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void WaitMicroSeconds(u32 us) {
|
||
|
|
#if defined(AMS_SDMMC_USE_OS_TIMER)
|
||
|
|
/* Ensure that nothing is reordered before we wait. */
|
||
|
|
DataSynchronizationBarrier();
|
||
|
|
InstructionSynchronizationBarrier();
|
||
|
|
|
||
|
|
/* If the time is small, spinloop, otherwise pend ourselves. */
|
||
|
|
if (us < 100) {
|
||
|
|
SpinWaitMicroSeconds(us);
|
||
|
|
} else {
|
||
|
|
os::SleepThread(TimeSpan::FromMicroSeconds(us));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure that nothing is reordered after we wait. */
|
||
|
|
DataSynchronizationBarrier();
|
||
|
|
InstructionSynchronizationBarrier();
|
||
|
|
#elif defined(AMS_SDMMC_USE_UTIL_TIMER)
|
||
|
|
util::WaitMicroSeconds(us);
|
||
|
|
#else
|
||
|
|
#error "Unknown context for ams::sdmmc::impl::WaitMicroSeconds"
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void WaitClocks(u32 num_clocks, u32 clock_frequency_khz) {
|
||
|
|
AMS_ABORT_UNLESS(clock_frequency_khz > 0);
|
||
|
|
WaitMicroSeconds(util::DivideUp(1000 * num_clocks, clock_frequency_khz));
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|