A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-24 21:54:34 -04:00
Code Issues Projects Releases Packages Wiki Activity

libata: add support for READ/WRITE LONG

Browse source 
The READ/WRITE LONG commands are theoretically obsolete,
but the majority of drives in existance still implement them.

The WRITE_LONG and WRITE_LONG_ONCE commands are of particular
interest for fault injection testing -- eg. creating "media errors"
at specific locations on a disk.

The fussy bit is that these commands require a non-standard
sector size, usually 520 bytes instead of 512.

This patch adds support to libata for READ/WRITE LONG commands
issued via SG_IO/ATA_16.

Signed-off-by:  Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Mark Lord 2007-03-16 10:22:26 -04:00 • committed by Jeff Garzik
commit 5a5dbd18a7
4 changed files with 30 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/linux/ata.h
View file

@ -164,6 +164,12 @@ enum {
/* READ_LOG_EXT pages */
ATA_LOG_SATA_NCQ = 0x10,
/* READ/WRITE LONG (obsolete) */
ATA_CMD_READ_LONG = 0x22,
ATA_CMD_READ_LONG_ONCE = 0x23,
ATA_CMD_WRITE_LONG = 0x32,
ATA_CMD_WRITE_LONG_ONCE = 0x33,
/* SETFEATURES stuff */
SETFEATURES_XFER = 0x03,
XFER_UDMA_7 = 0x47,

2
include/linux/libata.h
View file

@ -427,6 +427,7 @@ struct ata_queued_cmd {
int dma_dir;
unsigned int pad_len;
unsigned int sect_size;
unsigned int nbytes;
unsigned int curbytes;
@ -1182,6 +1183,7 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
qc->n_elem = 0;
qc->err_mask = 0;
qc->pad_len = 0;
qc->sect_size = ATA_SECT_SIZE;
ata_tf_init(qc->dev, &qc->tf);