On 7/21/21 12:42 PM, Damien Le Moal wrote:

Add support to discover if an ATA device supports the Concurrent
Positioning Ranges Log (address 0x47), indicating that the device is
capable of seeking to multiple different locations in parallel using
multiple actuators serving different LBA ranges.

Also add support to translate the concurrent positioning ranges log
into its equivalent Concurrent Positioning Ranges VPD page B9h in
libata-scsi.c.

The format of the Concurrent Positioning Ranges Log is defined in ACS-5
r9.

Signed-off-by: Damien Le Moal <redacted>
---
  drivers/ata/libata-core.c | 57 +++++++++++++++++++++++++++++++++++++++
  drivers/ata/libata-scsi.c | 46 ++++++++++++++++++++++++-------
  include/linux/ata.h       |  1 +
  include/linux/libata.h    | 11 ++++++++
  4 files changed, 106 insertions(+), 9 deletions(-)

Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
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