Disable USB2 in AMD8111 and remove ide hardcode io addr
rminnich at lanl.gov
Wed May 5 08:45:00 CEST 2004
On Tue, 4 May 2004, YhLu wrote:
> I'm going to add several lines in amd8111_enable of amd8111.c to disable
> USB2 in amd8111.
> /* disable usb2 in amd 8111 because it does not work awlays*/
> byte = pci_read_config8(lpc_dev, 0x47);
> byte |= (1<<7);
> pci_write_config8(lpc_dev, 0x47, byte);
this is the wrong way to do this, please don't do it just yet.
The right way to do it is in the config file.
I will look at your code and we'll send an example.
> Also will remove several lines in amd8111_ide.c
> /* The AMD768 has a bug where the BM DMA address must be
> * 256 byte aligned while it is only 16 bytes long.
> * Hard code this to a valid address below 0x1000
> * where automatic port address assignment starts.
> * FIXME: I assume the 8111 does the same thing. We should
> * clarify. stepan at suse.de
> pci_write_config32(dev, 0x20, 0xf01);
> pci_write_config32(dev, 0x48, 0x205e5e5e);
> word = 0x06a;
> pci_write_config16(dev, 0x4c, word);
> and add
> byte = 0x20 ; // Latency: 64-->32
> pci_write_config8(dev, 0xd, byte);
which is needed because ...
Let's talk some more.
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