scsi: hisi_sas: add controller reset

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There are some scenarios that we need to warm-reset to reset registers
of SAS controller. During reset we disable interrupts/DQs/PHYs, and
after reset we re-init the hardware and rescan the topology to see if
anything changed.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Xiang Chen 2017-03-23 01:25:18 +08:00 • committed by Martin K. Petersen

parent 2e244f0f5b

commit 06ec0fb97c

3 changed files with 227 additions and 8 deletions

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7

drivers/scsi/hisi_sas/hisi_sas.h

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134

drivers/scsi/hisi_sas/hisi_sas_main.c

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94

drivers/scsi/hisi_sas/hisi_sas_v2_hw.c

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