libata: Add 32bit PIO support
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@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index a4f9e39..a7999c1 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -151,8 +151,7 @@
pci_read_config_byte(pdev, pio_fifo, &fifo);
fifo &= ~(0x0F << shift);
- if (on)
- fifo |= (on << shift);
+ fifo |= (on << shift);
pci_write_config_byte(pdev, pio_fifo, fifo);
}
@@ -370,10 +369,11 @@
.inherits = &ata_sff_port_ops,
.cable_detect = ata_cable_40wire,
.set_piomode = ali_set_piomode,
+ .sff_data_xfer = ata_sff_data_xfer32,
};
static const struct ata_port_operations ali_dma_base_ops = {
- .inherits = &ata_bmdma_port_ops,
+ .inherits = &ata_bmdma32_port_ops,
.set_piomode = ali_set_piomode,
.set_dmamode = ali_set_dmamode,
};