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authorAlan Cox <alan@redhat.com>2009-01-05 14:16:39 +0000
committerJeff Garzik <jgarzik@redhat.com>2009-01-08 16:34:27 -0500
commit871af1210f13966ab911ed2166e4ab2ce775b99d (patch)
treef17f0016f6e966d54a379a3de6e6bbde3b9359fe /include
parente427fe042cf90c0652eed9a85e57a8fd8af89890 (diff)
downloadop-kernel-dev-871af1210f13966ab911ed2166e4ab2ce775b99d.zip
op-kernel-dev-871af1210f13966ab911ed2166e4ab2ce775b99d.tar.gz
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/libata.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 3449de5..4f7c8fb 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1518,6 +1518,7 @@ extern void sata_pmp_error_handler(struct ata_port *ap);
extern const struct ata_port_operations ata_sff_port_ops;
extern const struct ata_port_operations ata_bmdma_port_ops;
+extern const struct ata_port_operations ata_bmdma32_port_ops;
/* PIO only, sg_tablesize and dma_boundary limits can be removed */
#define ATA_PIO_SHT(drv_name) \
@@ -1545,6 +1546,8 @@ extern void ata_sff_exec_command(struct ata_port *ap,
const struct ata_taskfile *tf);
extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
unsigned char *buf, unsigned int buflen, int rw);
+extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
+ unsigned char *buf, unsigned int buflen, int rw);
extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
unsigned char *buf, unsigned int buflen, int rw);
extern u8 ata_sff_irq_on(struct ata_port *ap);
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