Alan Cox wrote:
From: Alan Cox <alan@xxxxxxxxxx> This matters for some controllers and in one or two cases almost doubles PIO performance. Add a bmdma32 operations set we can inherit and activate it for some controllers Signed-off-by: Alan Cox <alan@xxxxxxxxxx> --- drivers/ata/ata_piix.c | 2 +- drivers/ata/libata-sff.c | 53 +++++++++++++++++++++++++++++++++++++++++++++ drivers/ata/pata_ali.c | 6 +++-- drivers/ata/pata_amd.c | 4 ++- drivers/ata/pata_mpiix.c | 3 ++- drivers/ata/pata_sil680.c | 4 ++- include/linux/libata.h | 3 +++ 7 files changed, 66 insertions(+), 9 deletions(-)
This can likely be enabled for more controllers (presumably all the SFF-based SATA controllers as well as any other PATA that couldn't be on a physical ISA bus). This is a start though.
Don't some of the VLB controller drivers have their own private 32-bit PIO implementation? Those should likely be updated to use this support.
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