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Kernel: Send IDE flush command after writing sectors.

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This commit is contained in:
Andreas Kling 2019-04-23 03:16:47 +02:00
parent 11e7ce60e5
commit 37498c1566
1 changed files with 7 additions and 0 deletions
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7
Kernel/Devices/IDEDiskDevice.cpp
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@ -19,6 +19,7 @@ enum IDECommand : byte {
IDENTIFY_DRIVE = 0xEC, IDENTIFY_DRIVE = 0xEC,
READ_SECTORS = 0x21, READ_SECTORS = 0x21,
WRITE_SECTORS = 0x30, WRITE_SECTORS = 0x30,
FLUSH_CACHE = 0xe7,
}; };
enum IDEStatus : byte { enum IDEStatus : byte {
@ -257,5 +258,11 @@ bool IDEDiskDevice::write_sectors(dword start_sector, word count, const byte* da
enable_irq(); enable_irq();
wait_for_irq(); wait_for_irq();
disable_irq();
IO::out8(IDE0_COMMAND, FLUSH_CACHE);
while (IO::in8(IDE0_STATUS) & BUSY);
enable_irq();
wait_for_irq();
return !m_device_error; return !m_device_error;
} }