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Kernel: Change the timings when initiating AHCI port reset

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The intention is to make the boot to be faster, therefore we should
decrease the time deltas in timeout loops to allow earlier break
from these.

Also, there's no need to wait 10 milliseconds before setting
the interface state to "no action request" during the reset sequence.
This commit is contained in:
Liav A 2021-03-07 21:49:02 +02:00 committed by Andreas Kling
parent 800dca3834
commit 2929dc6bd7
Notes: sideshowbarker 2024-07-18 21:27:10 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/2929dc6bd7d
Pull-request: https://github.com/SerenityOS/serenity/pull/5734
1 changed files with 8 additions and 8 deletions
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16
Kernel/Storage/AHCIPort.cpp
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@ -606,39 +606,39 @@ bool AHCIPort::initiate_sata_reset()
full_memory_barrier();
size_t retry = 0;
// Try to wait 1 second for HBA to clear Command List Running
while (retry < 500) {
while (retry < 5000) {
if (!(m_port_registers.cmd & (1 << 15)))
break;
// The AHCI specification says to wait now a 500 milliseconds
IO::delay(1000);
IO::delay(100);
retry++;
}
full_memory_barrier();
spin_up();
full_memory_barrier();
set_interface_state(AHCI::DeviceDetectionInitialization::PerformInterfaceInitializationSequence);
// The AHCI specification says to wait now a 1 millisecond, we wait 2 ms
IO::delay(10000);
// The AHCI specification says to wait now a 1 millisecond
IO::delay(1000);
full_memory_barrier();
set_interface_state(AHCI::DeviceDetectionInitialization::NoActionRequested);
full_memory_barrier();
retry = 0;
while (retry < 5) {
while (retry < 5000) {
if (!((m_port_registers.ssts & 0xf) == 0))
break;
IO::delay(10000);
IO::delay(10);
retry++;
}
// If device presence detected and Phy communication established, wait for signature to update
if ((m_port_registers.ssts & 0xf) == 3) {
retry = 0;
while (retry < 30) {
while (retry < 30000) {
if (!(m_port_registers.tfd & (ATA_SR_BSY | ATA_SR_DRQ)) && m_port_registers.sig != 0xffffffff)
break;
IO::delay(10000);
IO::delay(10);
retry++;
}
}