diff options
| author | Hannes Reinecke <hare@suse.de> | 2015-03-27 16:46:37 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-03-27 16:59:22 +0100 |
| commit | a1524f226a02aa6edebd90ae0752e97cfd78b159 (patch) | |
| tree | 3b694223de3a939c51271f779966f1a11c74c74b /drivers/scsi | |
| parent | libata: Implement support for sense data reporting (diff) | |
| download | linux-a1524f226a02aa6edebd90ae0752e97cfd78b159.tar.xz linux-a1524f226a02aa6edebd90ae0752e97cfd78b159.zip | |
libata-eh: Set 'information' field for autosense
If NCQ autosense or the sense data reporting feature is enabled
the LBA of the offending command should be stored in the sense
data 'information' field.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_error.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 4cdaffca17fc..c95a4e943fc6 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -26,6 +26,7 @@ #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/jiffies.h> +#include <asm/unaligned.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -2586,3 +2587,33 @@ void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq) } } EXPORT_SYMBOL(scsi_build_sense_buffer); + +/** + * scsi_set_sense_information - set the information field in a + * formatted sense data buffer + * @buf: Where to build sense data + * @info: 64-bit information value to be set + * + **/ +void scsi_set_sense_information(u8 *buf, u64 info) +{ + if ((buf[0] & 0x7f) == 0x72) { + u8 *ucp, len; + + len = buf[7]; + ucp = (char *)scsi_sense_desc_find(buf, len + 8, 0); + if (!ucp) { + buf[7] = len + 0xa; + ucp = buf + 8 + len; + } + ucp[0] = 0; + ucp[1] = 0xa; + ucp[2] = 0x80; /* Valid bit */ + ucp[3] = 0; + put_unaligned_be64(info, &ucp[4]); + } else if ((buf[0] & 0x7f) == 0x70) { + buf[0] |= 0x80; + put_unaligned_be64(info, &buf[3]); + } +} +EXPORT_SYMBOL(scsi_set_sense_information); |