From 14cc9271780b8348f5007b6247290c15367fb45c Mon Sep 17 00:00:00 2001 From: Rudolf Marek Date: Sun, 10 Oct 2010 19:54:15 +0000 Subject: [PATCH] Following patch enables UDMA on ALL IDE devices. The current code enables it only for primary master, which causes my DVD drive to fail under windows install and even after hard reset in linux (DMA seems lockup). The fix should not have any influence for Linux because the IDE driver will correctly reprogram this bit. Signed-off-by: Rudolf Marek Acked-by: Uwe Hermann git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5931 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/southbridge/amd/sb700/sb700_ide.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/src/southbridge/amd/sb700/sb700_ide.c b/src/southbridge/amd/sb700/sb700_ide.c index 08e625492b..88d634bebb 100644 --- a/src/southbridge/amd/sb700/sb700_ide.c +++ b/src/southbridge/amd/sb700/sb700_ide.c @@ -39,10 +39,9 @@ static void ide_init(struct device *dev) dword &= ~(1 << 16); pci_write_config32(dev, 0x70, dword); - /* Ultra DMA mode */ - /* enable UDMA */ + /* Enable UDMA on all devices, it will become UDMA0 (default PIO is PIO0) */ byte = pci_read_config8(dev, 0x54); - byte |= 1 << 0; + byte |= 0xf; pci_write_config8(dev, 0x54, byte); /* Enable I/O Access&& Bus Master */