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Kernel: Move IO delay code to x86 architecture subdirectory

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Many code patterns and hardware procedures rely on reliable delay in the
microseconds granularity, and since they are using such delays which are
valid cases, but should not rely on x86 specific code, we allow to
determine in compile time the proper platform-specific code to use to
invoke such delays.
This commit is contained in:
Liav A 2022-09-02 11:23:32 +03:00 • committed by Linus Groh
parent cac72259d0
commit 84fbab6803
19 changed files with 96 additions and 54 deletions
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9
Kernel/Storage/ATA/AHCI/Port.cpp
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@ -8,6 +8,7 @@
// please look at Documentation/Kernel/AHCILocking.md
#include <AK/Atomic.h>
#include <Kernel/Arch/Delay.h>
#include <Kernel/Locking/Spinlock.h>
#include <Kernel/Memory/MemoryManager.h>
#include <Kernel/Memory/ScatterGatherList.h>
@ -552,7 +553,7 @@ bool AHCIPort::spin_until_ready() const
size_t spin = 0;
dbgln_if(AHCI_DEBUG, "AHCI Port {}: Spinning until ready.", representative_port_index());
while ((m_port_registers.tfd & (ATA_SR_BSY | ATA_SR_DRQ)) && spin <= 100) {
IO::delay(1000);
microseconds_delay(1000);
spin++;
}
if (spin == 100) {
@ -719,7 +720,7 @@ bool AHCIPort::identify_device()
success = true;
break;
}
IO::delay(1000); // delay with 1 milliseconds
microseconds_delay(1000); // delay with 1 milliseconds
time_elapsed++;
}
@ -739,7 +740,7 @@ void AHCIPort::wait_until_condition_met_or_timeout(size_t delay_in_microseconds,
while (retry < retries) {
if (condition_being_met())
break;
IO::delay(delay_in_microseconds);
microseconds_delay(delay_in_microseconds);
retry++;
}
}
@ -852,7 +853,7 @@ bool AHCIPort::initiate_sata_reset()
full_memory_barrier();
set_interface_state(AHCI::DeviceDetectionInitialization::PerformInterfaceInitializationSequence);
// The AHCI specification says to wait now a 1 millisecond
IO::delay(1000);
microseconds_delay(1000);
full_memory_barrier();
set_interface_state(AHCI::DeviceDetectionInitialization::NoActionRequested);
full_memory_barrier();