diff options
| author | Tejun Heo <tj@kernel.org> | 2009-01-08 16:29:20 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-01-08 16:29:20 -0500 |
| commit | 6ecb6f25d3a52c0d032aa73bde1ff9bc454aa66c (patch) | |
| tree | 3c4804660bbced95918b6d2e9dab06b3994846a9 /drivers/ata/ahci.c | |
| parent | b63d3953251f144b75993374d752e0d57034c8bb (diff) | |
pata_hpt366: reimplement mode programming
Reimplement mode programming logic of pata_hpt366 such that it's
identical to that of IDE hpt366 driver. The differences were...
* pata_hpt366 used 0xCFFF8FFFF to mask pio modes and 0x3FFFFFFF dma
modes. IDE hpt366 uses 0xC1F8FFFF for PIO, 0x303800FF for MWDMA and
0x30070000 for UDMA.
* pata_hpt366 doesn't set 0x08000000 for PIO unless it's already set
and always turns it on for MWDMA/UDMA. IDE hpt366 doesn't bother
with the bit. It always uses what was there.
* IDE hpt366 always clears 0xC0000000. pata_hpt366 doesn't.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/ahci.c')
0 files changed, 0 insertions, 0 deletions