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| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2007-07-06 19:13:52 -0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-09 12:17:35 -0400 |
| commit | d26fc9551a15fdad0d5de8376a78816b8af44f00 (patch) | |
| tree | 5c829c1baf499ad1f31ed4b8b41e766b290a6306 /include | |
| parent | c1e6f28cc5de37dcd113b9668a185c0b9334ba8a (diff) | |
| download | linux-d26fc9551a15fdad0d5de8376a78816b8af44f00.tar.gz linux-d26fc9551a15fdad0d5de8376a78816b8af44f00.tar.bz2 linux-d26fc9551a15fdad0d5de8376a78816b8af44f00.zip | |
libata: Support chips with 64K PRD quirk
Add ata_dumb_qc_prep and supporting logic so that a driver can just
specify it needs to be helped in this area. 64K entries are split
as with drivers/ide.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/libata.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 8d3e391ab8d3..a3df64677ac3 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -116,6 +116,7 @@ static inline struct device *pci_dev_to_dev(struct pci_dev *pdev) enum { /* various global constants */ LIBATA_MAX_PRD = ATA_MAX_PRD / 2, + LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ ATA_MAX_PORTS = 8, ATA_DEF_QUEUE = 1, /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ @@ -778,6 +779,7 @@ extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data); extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data); +extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); extern void ata_qc_prep(struct ata_queued_cmd *qc); extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |