tree 2a96b690ddfecc1c4a3eba157e3d0be893729ffd
parent 45c901b848aa8fae1fede4d986fd83ed2c53f400
author John Garry <john.garry@huawei.com> 1453747629 +0800
committer Martin K. Petersen <martin.petersen@oracle.com> 1456280822 -0500

hisi_sas: add v2 hw init

Add code to initialise the hardware.

Support is also added to deal with the "am-max-transmissions" (amt)
limitation in hip06 controller #1. This is how many connection requests
we can send on the system bus before waiting for a response.  Due to
chip bus design, controller #1 is limited to 32 amt, while, by design, a
controller supports 64.  The default value for the nibbles in the
relevant registers is 0x40; these need to be programmed with 0x20.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>