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PATA: LBA48 uses 16 bit features register

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Tom 2020-06-29 17:13:26 -06:00 • committed by Andreas Kling
parent 96109e9776
commit a2fd824dff
1 changed files with 4 additions and 12 deletions
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16
Kernel/Devices/PATAChannel.cpp
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@ -294,15 +294,11 @@ bool PATAChannel::ata_read_sectors_with_dma(u32 lba, u16 count, u8* outbuf, bool
while (m_io_base.offset(ATA_REG_STATUS).in<u8>() & ATA_SR_BSY)
;
u8 devsel = 0xe0;
if (slave_request)
devsel |= 0x10;
m_control_base.offset(ATA_CTL_CONTROL).out<u8>(0);
m_io_base.offset(ATA_REG_HDDEVSEL).out<u8>(devsel | (static_cast<u8>(slave_request) << 4));
m_io_base.offset(ATA_REG_HDDEVSEL).out<u8>(0x40 | (static_cast<u8>(slave_request) << 4));
io_delay();
m_io_base.offset(ATA_REG_FEATURES).out<u8>(0);
m_io_base.offset(ATA_REG_FEATURES).out<u16>(0);
m_io_base.offset(ATA_REG_SECCOUNT0).out<u8>(0);
m_io_base.offset(ATA_REG_LBA0).out<u8>(0);
@ -365,15 +361,11 @@ bool PATAChannel::ata_write_sectors_with_dma(u32 lba, u16 count, const u8* inbuf
while (m_io_base.offset(ATA_REG_STATUS).in<u8>() & ATA_SR_BSY)
;
u8 devsel = 0xe0;
if (slave_request)
devsel |= 0x10;
m_control_base.offset(ATA_CTL_CONTROL).out<u8>(0);
m_io_base.offset(ATA_REG_HDDEVSEL).out<u8>(devsel | (static_cast<u8>(slave_request) << 4));
m_io_base.offset(ATA_REG_HDDEVSEL).out<u8>(0x40 | (static_cast<u8>(slave_request) << 4));
io_delay();
m_io_base.offset(ATA_REG_FEATURES).out<u8>(0);
m_io_base.offset(ATA_REG_FEATURES).out<u16>(0);
m_io_base.offset(ATA_REG_SECCOUNT0).out<u8>(0);
m_io_base.offset(ATA_REG_LBA0).out<u8>(0);